回答編集履歴
5
パーミッション関係および Pause/Resume 時の動作等のコード修正
test
CHANGED
@@ -24,23 +24,31 @@
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import androidx.a
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import androidx.activity.result.ActivityResultLauncher;
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import androidx.activity.result.contract.ActivityResultContracts;
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import androidx.appcompat.app.
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import androidx.appcompat.app.*;
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import androidx.core.content.ContextCompat;
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import androidx.fragment.app.DialogFragment;
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import android.Manifest;
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import android.app.Dialog;
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import android.content.pm.PackageManager;
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import android.media.*;
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import android.os.*;
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import android.view.Gravity;
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import android.widget.
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import android.widget.*;
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@@ -52,10 +60,6 @@
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private static final int PERMISSIONS_REQUEST_RECORD_AUDIO = 99;
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private static final int AUDIO_SAMPLE_FREQ = 44100;//サンプリング周波数
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private static final int FRAME_RATE = 10;
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@@ -66,6 +70,8 @@
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private SurfaceDrawer surfaceDrawer;
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private Button button;
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private HandlerThread listenerThread;
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@@ -84,9 +90,135 @@
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surfaceDrawer = new SurfaceDrawer(findViewById(R.id.surfaceView));
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button = findViewById(R.id.button);
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button.setEnabled(true);
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button.setText(START_TEXT);
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button.setOnClickListener(v -> {
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switch(button.getText().toString()) { //トグル
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case START_TEXT:
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permissionCheckAndStart();
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break;
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case STOP_TEXT:
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recorder.stop();
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button.setText(START_TEXT);
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break;
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}
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});
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}
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//権限要求ダイアログ表示・返答受付
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private final ActivityResultLauncher<String> requestPermissionLauncher =
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registerForActivityResult(new ActivityResultContracts.RequestPermission(), isGranted -> {
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if (isGranted) {
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start();
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} else {
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Toast t = Toast.makeText(this, "権限が許可されなかった為、実行できません。", Toast.LENGTH_LONG);
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t.setGravity(Gravity.CENTER, 0, 0);
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t.show();
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}
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});
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//権限説明ダイアログ ok 押下 → 権限要求ダイアログ
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public static class ExplainDialogFragment extends DialogFragment {
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@Override
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public Dialog onCreateDialog(Bundle savedInstanceState) {
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MainActivity activity = (MainActivity)requireActivity();
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return new AlertDialog.Builder(activity)
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.setTitle("使用許可の説明")
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.setMessage("音声波形を表示するにはマイクの使用(「音声の録音」)の許可が必要です")
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.setNeutralButton(android.R.string.cancel, (dialog,which)->{})
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.setPositiveButton(android.R.string.ok, (dialog,which)->{
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activity.requestPermissionLauncher.launch(Manifest.permission.RECORD_AUDIO);
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})
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.create();
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}
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}
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//権限チェック
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private void permissionCheckAndStart() {
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if(ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED) {
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start();
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} else if (shouldShowRequestPermissionRationale(Manifest.permission.RECORD_AUDIO)) {
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new ExplainDialogFragment().show(getSupportFragmentManager(), "Explain");
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} else {
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requestPermissionLauncher.launch(Manifest.permission.RECORD_AUDIO);
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}
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}
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//波形表示開始
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private void start() {
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if(recorder == null) initialize();
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recorder.startRecording();
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button.setText(STOP_TEXT);
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}
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private void initialize() {
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int frameBufferSize = AUDIO_SAMPLE_FREQ / FRAME_RATE;
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@@ -110,6 +242,8 @@
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public void onMarkerReached(AudioRecord recorder) {}
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@Override
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public void onPeriodicNotification(AudioRecord recorder) {
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@@ -122,123 +256,305 @@
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}, new Handler(listenerThread.getLooper())); //HandlerThread でリスナを実行
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button = findViewById(R.id.button);
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button.setText(START_TEXT);
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button.setEnabled(false);
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button.setOnClickListener(v -> {
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switch(button.getText().toString()) { //トグル
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}
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private void terminate() {
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break;
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if(recorder != null) {
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recorder.stop();
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break;
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}
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});
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int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO);
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if(permissionCheck == PackageManager.PERMISSION_GRANTED) { // すでにユーザーがパーミッションを許可
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recorder.release();
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} else { // ユーザーはパーミッションを許可していない
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requestPermissions(new String[]{Manifest.permission.RECORD_AUDIO}, PERMISSIONS_REQUEST_RECORD_AUDIO);
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}
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recorder = null;
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if(listenerThread != null) listenerThread.quit();
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listenerThread = null;
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}
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private AudioRecord settingRecorder(int sampleRateInHz, int channelConfig, int audioFormat, int frameBufferSize) {
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int minBufferSize = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
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if(minBufferSize == AudioRecord.ERROR_BAD_VALUE) throw new IllegalArgumentException();
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if(minBufferSize == AudioRecord.ERROR) throw new IllegalStateException("minBufferSize");
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int bufferSizeInBytes = Math.max(minBufferSize, frameBufferSize*10); //"*10"は余裕分
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AudioRecord recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, bufferSizeInBytes);
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if(recorder.getState() != AudioRecord.STATE_INITIALIZED) throw new IllegalStateException("recorder.getState");
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if(recorder.setPositionNotificationPeriod(frameBufferSize) != AudioRecord.SUCCESS) throw new IllegalStateException("setPositionNotificationPeriod frameBufferSize="+frameBufferSize);
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return recorder;
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}
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@Override
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public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
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super.onRequestPermissionsResult(requestCode, permissions, grantResults);
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protected void onPause() { //停止
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super.onPause();
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terminate();
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}
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@Override
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protected void onResume() { //再開
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super.onResume();
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if(button.getText().toString().equals(STOP_TEXT)) { //実行中だった
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permissionCheckAndStart();
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}
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}
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}
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```
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レイアウト: activity_main.xml
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```xml
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348
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<?xml version="1.0" encoding="utf-8"?>
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351
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<androidx.constraintlayout.widget.ConstraintLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context=".MainActivity">
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366
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<SurfaceView
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android:id="@+id/surfaceView"
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android:layout_width="0dp"
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android:layout_height="0dp"
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375
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app:layout_constraintBottom_toTopOf="@id/button"
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377
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent"
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381
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app:layout_constraintTop_toTopOf="parent" />
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383
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384
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385
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<Button
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android:id="@+id/button"
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android:layout_width="0dp"
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android:layout_height="wrap_content"
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android:text="START"
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android:layout_margin="10dp"
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app:layout_constraintBottom_toBottomOf="parent"
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398
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app:layout_constraintLeft_toLeftOf="parent"
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app:layout_constraintRight_toRightOf="parent" />
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405
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</androidx.constraintlayout.widget.ConstraintLayout>
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406
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407
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```
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408
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409
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SurfaceDrawer.java
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410
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411
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```java
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412
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413
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package com.teratail.q362100;
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415
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416
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import android.graphics.Canvas;
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418
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419
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import android.graphics.Color;
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420
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421
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import android.graphics.Paint;
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422
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423
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import android.graphics.Path;
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424
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425
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import android.util.Log;
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426
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427
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import android.view.SurfaceHolder;
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428
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429
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import android.view.SurfaceView;
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430
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431
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432
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433
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public class SurfaceDrawer implements SurfaceHolder.Callback {
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434
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435
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@SuppressWarnings("UnusedDeclaration")
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436
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437
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private static final String TAG = "SurfaceDrawer";
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438
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|
439
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440
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441
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private static final float COMPRESSION_RATE = 10f;
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442
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443
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444
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445
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private SurfaceHolder holder;
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446
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|
447
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private float canvasWidth, canvasVerticalCenter;
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448
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449
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private final Paint pathPaint;
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450
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|
451
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private final Path path = new Path();
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452
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+
|
453
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+
|
454
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+
|
455
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public SurfaceDrawer(SurfaceView surfaceView) {
|
456
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|
457
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holder = surfaceView.getHolder();
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458
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+
|
459
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holder.addCallback(this);
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460
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+
|
461
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+
|
462
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+
|
463
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pathPaint = new Paint();
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464
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|
465
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pathPaint.setAntiAlias(true);
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466
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|
467
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pathPaint.setStrokeWidth(2);//線幅
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468
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+
|
469
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pathPaint.setStyle(Paint.Style.STROKE);
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470
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+
|
471
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+
pathPaint.setColor(Color.GREEN);
|
472
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+
|
473
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}
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public void surfaceCreated(SurfaceHolder holder) {
|
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//Log.d(TAG, "surfaceCreated");
|
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+
|
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Canvas canvas = holder.lockCanvas();
|
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|
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if(canvas == null) return;
|
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|
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|
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+
canvas.drawColor(Color.BLACK);
|
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+
holder.unlockCanvasAndPost(canvas);
|
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}
|
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|
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|
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@Override
|
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|
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|
+
public void surfaceChanged(SurfaceHolder holder, int f, int w, int h) {
|
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+
|
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+
//Log.d(TAG, "surfaceChanged w="+w+", h="+h);
|
502
|
+
|
503
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+
canvasWidth = w;
|
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+
|
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+
canvasVerticalCenter = h / 2f;
|
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|
+
|
507
|
+
}
|
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+
|
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+
|
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|
+
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@Override
|
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|
513
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+
public void surfaceDestroyed(SurfaceHolder holder) {
|
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+
|
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|
+
//Log.d(TAG, "surfaceDestroyed");
|
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+
|
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|
+
}
|
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|
+
|
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|
+
|
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|
+
|
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|
+
public void draw(short[] data) {
|
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|
+
|
523
|
+
if(data == null || data.length < 2) return;
|
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|
+
|
525
|
+
|
526
|
+
|
527
|
+
Canvas canvas = holder.lockCanvas();
|
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|
+
|
529
|
+
if(canvas == null) {
|
530
|
+
|
531
|
+
Log.d(TAG, "holder.lockCanvas() is null.");
|
532
|
+
|
533
|
+
return;
|
534
|
+
|
535
|
+
}
|
536
|
+
|
537
|
+
|
538
|
+
|
539
|
+
canvas.drawColor(Color.BLACK); //塗り潰し
|
540
|
+
|
541
|
+
|
542
|
+
|
543
|
+
path.rewind();
|
544
|
+
|
545
|
+
path.moveTo(0, canvasVerticalCenter + data[0] / COMPRESSION_RATE);
|
546
|
+
|
547
|
+
for(int x=1; x<canvasWidth; x++) {
|
548
|
+
|
549
|
+
path.lineTo(x, canvasVerticalCenter + data[(int)(data.length / canvasWidth * x)] / COMPRESSION_RATE);
|
550
|
+
|
551
|
+
}
|
552
|
+
|
553
|
+
canvas.drawPath(path, pathPaint);
|
554
|
+
|
555
|
+
|
556
|
+
|
557
|
+
holder.unlockCanvasAndPost(canvas);
|
242
558
|
|
243
559
|
}
|
244
560
|
|
@@ -246,348 +562,20 @@
|
|
246
562
|
|
247
563
|
```
|
248
564
|
|
565
|
+
app/build.gradle
|
566
|
+
|
567
|
+
dependencies に追加
|
568
|
+
|
569
|
+
```plain
|
570
|
+
|
571
|
+
implementation 'androidx.activity:activity:1.3.1'
|
572
|
+
|
573
|
+
```
|
574
|
+
|
249
|
-
|
575
|
+
AndroidManifest.xml 追加
|
250
576
|
|
251
577
|
```xml
|
252
578
|
|
253
|
-
<
|
579
|
+
<uses-permission android:name="android.permission.RECORD_AUDIO" />
|
254
|
-
|
255
|
-
<androidx.constraintlayout.widget.ConstraintLayout
|
256
|
-
|
257
|
-
xmlns:android="http://schemas.android.com/apk/res/android"
|
258
|
-
|
259
|
-
xmlns:app="http://schemas.android.com/apk/res-auto"
|
260
|
-
|
261
|
-
xmlns:tools="http://schemas.android.com/tools"
|
262
|
-
|
263
|
-
android:layout_width="match_parent"
|
264
|
-
|
265
|
-
android:layout_height="match_parent"
|
266
|
-
|
267
|
-
tools:context=".MainActivity">
|
268
|
-
|
269
|
-
|
270
|
-
|
271
|
-
<SurfaceView
|
272
|
-
|
273
|
-
android:id="@+id/surfaceView"
|
274
|
-
|
275
|
-
android:layout_width="0dp"
|
276
|
-
|
277
|
-
android:layout_height="0dp"
|
278
|
-
|
279
|
-
app:layout_constraintBottom_toTopOf="@id/button"
|
280
|
-
|
281
|
-
app:layout_constraintLeft_toLeftOf="parent"
|
282
|
-
|
283
|
-
app:layout_constraintRight_toRightOf="parent"
|
284
|
-
|
285
|
-
app:layout_constraintTop_toTopOf="parent" />
|
286
|
-
|
287
|
-
|
288
|
-
|
289
|
-
<Button
|
290
|
-
|
291
|
-
android:id="@+id/button"
|
292
|
-
|
293
|
-
android:layout_width="0dp"
|
294
|
-
|
295
|
-
android:layout_height="wrap_content"
|
296
|
-
|
297
|
-
android:text="START"
|
298
|
-
|
299
|
-
android:layout_margin="10dp"
|
300
|
-
|
301
|
-
app:layout_constraintBottom_toBottomOf="parent"
|
302
|
-
|
303
|
-
app:layout_constraintLeft_toLeftOf="parent"
|
304
|
-
|
305
|
-
app:layout_constraintRight_toRightOf="parent" />
|
306
|
-
|
307
|
-
|
308
|
-
|
309
|
-
</androidx.constraintlayout.widget.ConstraintLayout>
|
310
580
|
|
311
581
|
```
|
312
|
-
|
313
|
-
SurfaceDrawer.java
|
314
|
-
|
315
|
-
```java
|
316
|
-
|
317
|
-
package com.teratail.q362100;
|
318
|
-
|
319
|
-
|
320
|
-
|
321
|
-
import android.graphics.Canvas;
|
322
|
-
|
323
|
-
import android.graphics.Color;
|
324
|
-
|
325
|
-
import android.graphics.Paint;
|
326
|
-
|
327
|
-
import android.graphics.Path;
|
328
|
-
|
329
|
-
import android.view.SurfaceHolder;
|
330
|
-
|
331
|
-
import android.view.SurfaceView;
|
332
|
-
|
333
|
-
|
334
|
-
|
335
|
-
public class SurfaceDrawer implements SurfaceHolder.Callback {
|
336
|
-
|
337
|
-
@SuppressWarnings("UnusedDeclaration")
|
338
|
-
|
339
|
-
private static final String TAG = "SurfaceDrawer";
|
340
|
-
|
341
|
-
|
342
|
-
|
343
|
-
private static final float COMPRESSION_RATE = 10f;
|
344
|
-
|
345
|
-
|
346
|
-
|
347
|
-
private SurfaceHolder holder;
|
348
|
-
|
349
|
-
private float canvasWidth, canvasVerticalCenter;
|
350
|
-
|
351
|
-
private final Paint pathPaint;
|
352
|
-
|
353
|
-
private final Path path = new Path();
|
354
|
-
|
355
|
-
|
356
|
-
|
357
|
-
public SurfaceDrawer(SurfaceView surfaceView) {
|
358
|
-
|
359
|
-
holder = surfaceView.getHolder();
|
360
|
-
|
361
|
-
holder.addCallback(this);
|
362
|
-
|
363
|
-
|
364
|
-
|
365
|
-
pathPaint = new Paint();
|
366
|
-
|
367
|
-
pathPaint.setAntiAlias(true);
|
368
|
-
|
369
|
-
pathPaint.setStrokeWidth(2);//線幅
|
370
|
-
|
371
|
-
pathPaint.setStyle(Paint.Style.STROKE);
|
372
|
-
|
373
|
-
pathPaint.setColor(Color.GREEN);
|
374
|
-
|
375
|
-
}
|
376
|
-
|
377
|
-
|
378
|
-
|
379
|
-
@Override
|
380
|
-
|
381
|
-
public void surfaceCreated(SurfaceHolder holder) {
|
382
|
-
|
383
|
-
Canvas canvas = holder.lockCanvas();
|
384
|
-
|
385
|
-
if(canvas == null) return;
|
386
|
-
|
387
|
-
|
388
|
-
|
389
|
-
canvas.drawColor(Color.BLACK);
|
390
|
-
|
391
|
-
holder.unlockCanvasAndPost(canvas);
|
392
|
-
|
393
|
-
}
|
394
|
-
|
395
|
-
|
396
|
-
|
397
|
-
@Override
|
398
|
-
|
399
|
-
public void surfaceChanged(SurfaceHolder holder, int f, int w, int h) {
|
400
|
-
|
401
|
-
canvasWidth = w;
|
402
|
-
|
403
|
-
canvasVerticalCenter = h / 2f;
|
404
|
-
|
405
|
-
}
|
406
|
-
|
407
|
-
|
408
|
-
|
409
|
-
@Override
|
410
|
-
|
411
|
-
public void surfaceDestroyed(SurfaceHolder holder) {
|
412
|
-
|
413
|
-
this.holder = null;
|
414
|
-
|
415
|
-
}
|
416
|
-
|
417
|
-
|
418
|
-
|
419
|
-
public void draw(short[] data) {
|
420
|
-
|
421
|
-
if(data == null || data.length < 2) return;
|
422
|
-
|
423
|
-
|
424
|
-
|
425
|
-
Canvas canvas = holder.lockCanvas();
|
426
|
-
|
427
|
-
if(canvas == null) return;
|
428
|
-
|
429
|
-
|
430
|
-
|
431
|
-
canvas.drawColor(Color.BLACK); //塗り潰し
|
432
|
-
|
433
|
-
|
434
|
-
|
435
|
-
path.rewind();
|
436
|
-
|
437
|
-
path.moveTo(0, canvasVerticalCenter + data[0] / COMPRESSION_RATE);
|
438
|
-
|
439
|
-
for(int x=1; x<canvasWidth; x++) {
|
440
|
-
|
441
|
-
path.lineTo(x, canvasVerticalCenter + data[(int)(data.length / canvasWidth * x)] / COMPRESSION_RATE);
|
442
|
-
|
443
|
-
}
|
444
|
-
|
445
|
-
canvas.drawPath(path, pathPaint);
|
446
|
-
|
447
|
-
|
448
|
-
|
449
|
-
holder.unlockCanvasAndPost(canvas);
|
450
|
-
|
451
|
-
}
|
452
|
-
|
453
|
-
}
|
454
|
-
|
455
|
-
```
|
456
|
-
|
457
|
-
app/build.gradle
|
458
|
-
|
459
|
-
```plain
|
460
|
-
|
461
|
-
plugins {
|
462
|
-
|
463
|
-
id 'com.android.application'
|
464
|
-
|
465
|
-
}
|
466
|
-
|
467
|
-
|
468
|
-
|
469
|
-
android {
|
470
|
-
|
471
|
-
compileSdk 30
|
472
|
-
|
473
|
-
|
474
|
-
|
475
|
-
defaultConfig {
|
476
|
-
|
477
|
-
applicationId "com.teratail.q362100"
|
478
|
-
|
479
|
-
minSdk 29
|
480
|
-
|
481
|
-
targetSdk 30
|
482
|
-
|
483
|
-
versionCode 1
|
484
|
-
|
485
|
-
versionName "1.0"
|
486
|
-
|
487
|
-
|
488
|
-
|
489
|
-
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
|
490
|
-
|
491
|
-
}
|
492
|
-
|
493
|
-
|
494
|
-
|
495
|
-
buildTypes {
|
496
|
-
|
497
|
-
release {
|
498
|
-
|
499
|
-
minifyEnabled false
|
500
|
-
|
501
|
-
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
|
502
|
-
|
503
|
-
}
|
504
|
-
|
505
|
-
}
|
506
|
-
|
507
|
-
compileOptions {
|
508
|
-
|
509
|
-
sourceCompatibility JavaVersion.VERSION_1_8
|
510
|
-
|
511
|
-
targetCompatibility JavaVersion.VERSION_1_8
|
512
|
-
|
513
|
-
}
|
514
|
-
|
515
|
-
}
|
516
|
-
|
517
|
-
|
518
|
-
|
519
|
-
dependencies {
|
520
|
-
|
521
|
-
|
522
|
-
|
523
|
-
implementation 'androidx.appcompat:appcompat:1.3.1'
|
524
|
-
|
525
|
-
implementation 'com.google.android.material:material:1.4.0'
|
526
|
-
|
527
|
-
implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
|
528
|
-
|
529
|
-
testImplementation 'junit:junit:4.+'
|
530
|
-
|
531
|
-
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
|
532
|
-
|
533
|
-
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
|
534
|
-
|
535
|
-
}
|
536
|
-
|
537
|
-
```
|
538
|
-
|
539
|
-
AndroidManifest.xml
|
540
|
-
|
541
|
-
```xml
|
542
|
-
|
543
|
-
<?xml version="1.0" encoding="utf-8"?>
|
544
|
-
|
545
|
-
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
|
546
|
-
|
547
|
-
package="com.teratail.q362100">
|
548
|
-
|
549
|
-
|
550
|
-
|
551
|
-
<uses-permission android:name="android.permission.RECORD_AUDIO" />
|
552
|
-
|
553
|
-
|
554
|
-
|
555
|
-
<application
|
556
|
-
|
557
|
-
android:allowBackup="true"
|
558
|
-
|
559
|
-
android:icon="@mipmap/ic_launcher"
|
560
|
-
|
561
|
-
android:label="@string/app_name"
|
562
|
-
|
563
|
-
android:roundIcon="@mipmap/ic_launcher_round"
|
564
|
-
|
565
|
-
android:supportsRtl="true"
|
566
|
-
|
567
|
-
android:theme="@style/Theme.Q362100">
|
568
|
-
|
569
|
-
<activity
|
570
|
-
|
571
|
-
android:name=".MainActivity"
|
572
|
-
|
573
|
-
android:exported="true">
|
574
|
-
|
575
|
-
<intent-filter>
|
576
|
-
|
577
|
-
<action android:name="android.intent.action.MAIN" />
|
578
|
-
|
579
|
-
|
580
|
-
|
581
|
-
<category android:name="android.intent.category.LAUNCHER" />
|
582
|
-
|
583
|
-
</intent-filter>
|
584
|
-
|
585
|
-
</activity>
|
586
|
-
|
587
|
-
</application>
|
588
|
-
|
589
|
-
|
590
|
-
|
591
|
-
</manifest>
|
592
|
-
|
593
|
-
```
|
4
settingRecorder() 修正、AndroidManifest.xml 追加
test
CHANGED
@@ -220,7 +220,7 @@
|
|
220
220
|
|
221
221
|
if(minBufferSize == AudioRecord.ERROR_BAD_VALUE) throw new IllegalArgumentException();
|
222
222
|
|
223
|
-
if(minBufferSize == AudioRecord.ERROR) throw new IllegalStateException();
|
223
|
+
if(minBufferSize == AudioRecord.ERROR) throw new IllegalStateException("minBufferSize");
|
224
224
|
|
225
225
|
|
226
226
|
|
@@ -230,11 +230,11 @@
|
|
230
230
|
|
231
231
|
AudioRecord recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, bufferSizeInBytes);
|
232
232
|
|
233
|
-
if(recorder.getState() != AudioRecord.STATE_INITIALIZED) throw new IllegalStateException();
|
233
|
+
if(recorder.getState() != AudioRecord.STATE_INITIALIZED) throw new IllegalStateException("recorder.getState");
|
234
|
-
|
235
|
-
|
236
|
-
|
234
|
+
|
235
|
+
|
236
|
+
|
237
|
-
if(recorder.setPositionNotificationPeriod(frameBufferSize) != AudioRecord.SUCCESS) throw new IllegalStateException();
|
237
|
+
if(recorder.setPositionNotificationPeriod(frameBufferSize) != AudioRecord.SUCCESS) throw new IllegalStateException("setPositionNotificationPeriod frameBufferSize="+frameBufferSize);
|
238
238
|
|
239
239
|
|
240
240
|
|
@@ -535,3 +535,59 @@
|
|
535
535
|
}
|
536
536
|
|
537
537
|
```
|
538
|
+
|
539
|
+
AndroidManifest.xml
|
540
|
+
|
541
|
+
```xml
|
542
|
+
|
543
|
+
<?xml version="1.0" encoding="utf-8"?>
|
544
|
+
|
545
|
+
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
|
546
|
+
|
547
|
+
package="com.teratail.q362100">
|
548
|
+
|
549
|
+
|
550
|
+
|
551
|
+
<uses-permission android:name="android.permission.RECORD_AUDIO" />
|
552
|
+
|
553
|
+
|
554
|
+
|
555
|
+
<application
|
556
|
+
|
557
|
+
android:allowBackup="true"
|
558
|
+
|
559
|
+
android:icon="@mipmap/ic_launcher"
|
560
|
+
|
561
|
+
android:label="@string/app_name"
|
562
|
+
|
563
|
+
android:roundIcon="@mipmap/ic_launcher_round"
|
564
|
+
|
565
|
+
android:supportsRtl="true"
|
566
|
+
|
567
|
+
android:theme="@style/Theme.Q362100">
|
568
|
+
|
569
|
+
<activity
|
570
|
+
|
571
|
+
android:name=".MainActivity"
|
572
|
+
|
573
|
+
android:exported="true">
|
574
|
+
|
575
|
+
<intent-filter>
|
576
|
+
|
577
|
+
<action android:name="android.intent.action.MAIN" />
|
578
|
+
|
579
|
+
|
580
|
+
|
581
|
+
<category android:name="android.intent.category.LAUNCHER" />
|
582
|
+
|
583
|
+
</intent-filter>
|
584
|
+
|
585
|
+
</activity>
|
586
|
+
|
587
|
+
</application>
|
588
|
+
|
589
|
+
|
590
|
+
|
591
|
+
</manifest>
|
592
|
+
|
593
|
+
```
|
3
コード微量修正
test
CHANGED
@@ -24,6 +24,8 @@
|
|
24
24
|
|
25
25
|
|
26
26
|
|
27
|
+
import androidx.annotation.NonNull;
|
28
|
+
|
27
29
|
import androidx.appcompat.app.AppCompatActivity;
|
28
30
|
|
29
31
|
import androidx.core.content.ContextCompat;
|
@@ -44,6 +46,8 @@
|
|
44
46
|
|
45
47
|
public class MainActivity extends AppCompatActivity {
|
46
48
|
|
49
|
+
@SuppressWarnings("UnusedDeclaration")
|
50
|
+
|
47
51
|
private static final String TAG = "MainActivity";
|
48
52
|
|
49
53
|
|
@@ -62,12 +66,12 @@
|
|
62
66
|
|
63
67
|
|
64
68
|
|
65
|
-
private short audioData[];
|
66
|
-
|
67
69
|
private Button button;
|
68
70
|
|
69
71
|
private HandlerThread listenerThread;
|
70
72
|
|
73
|
+
private AudioRecord recorder;
|
74
|
+
|
71
75
|
|
72
76
|
|
73
77
|
public void onCreate(Bundle bundle) {
|
@@ -86,11 +90,11 @@
|
|
86
90
|
|
87
91
|
int frameBufferSize = AUDIO_SAMPLE_FREQ / FRAME_RATE;
|
88
92
|
|
89
|
-
audioData = new short[frameBufferSize];
|
93
|
+
short[] audioData = new short[frameBufferSize];
|
90
|
-
|
91
|
-
|
92
|
-
|
94
|
+
|
95
|
+
|
96
|
+
|
93
|
-
|
97
|
+
recorder = settingRecorder(AUDIO_SAMPLE_FREQ, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, frameBufferSize);
|
94
98
|
|
95
99
|
|
96
100
|
|
@@ -170,7 +174,7 @@
|
|
170
174
|
|
171
175
|
@Override
|
172
176
|
|
173
|
-
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
|
177
|
+
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
|
174
178
|
|
175
179
|
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
|
176
180
|
|
@@ -200,6 +204,12 @@
|
|
200
204
|
|
201
205
|
if(listenerThread != null) listenerThread.quit();
|
202
206
|
|
207
|
+
listenerThread = null;
|
208
|
+
|
209
|
+
if(recorder != null) recorder.release();
|
210
|
+
|
211
|
+
recorder = null;
|
212
|
+
|
203
213
|
}
|
204
214
|
|
205
215
|
|
@@ -324,11 +334,13 @@
|
|
324
334
|
|
325
335
|
public class SurfaceDrawer implements SurfaceHolder.Callback {
|
326
336
|
|
337
|
+
@SuppressWarnings("UnusedDeclaration")
|
338
|
+
|
327
339
|
private static final String TAG = "SurfaceDrawer";
|
328
340
|
|
329
341
|
|
330
342
|
|
331
|
-
private static final
|
343
|
+
private static final float COMPRESSION_RATE = 10f;
|
332
344
|
|
333
345
|
|
334
346
|
|
@@ -336,9 +348,9 @@
|
|
336
348
|
|
337
349
|
private float canvasWidth, canvasVerticalCenter;
|
338
350
|
|
339
|
-
private Paint pathPaint;
|
351
|
+
private final Paint pathPaint;
|
340
|
-
|
352
|
+
|
341
|
-
private Path path = new Path();
|
353
|
+
private final Path path = new Path();
|
342
354
|
|
343
355
|
|
344
356
|
|
@@ -388,7 +400,7 @@
|
|
388
400
|
|
389
401
|
canvasWidth = w;
|
390
402
|
|
391
|
-
canvasVerticalCenter = h / 2;
|
403
|
+
canvasVerticalCenter = h / 2f;
|
392
404
|
|
393
405
|
}
|
394
406
|
|
@@ -420,7 +432,7 @@
|
|
420
432
|
|
421
433
|
|
422
434
|
|
423
|
-
path.re
|
435
|
+
path.rewind();
|
424
436
|
|
425
437
|
path.moveTo(0, canvasVerticalCenter + data[0] / COMPRESSION_RATE);
|
426
438
|
|
2
app/build.gradle 追加
test
CHANGED
@@ -441,3 +441,85 @@
|
|
441
441
|
}
|
442
442
|
|
443
443
|
```
|
444
|
+
|
445
|
+
app/build.gradle
|
446
|
+
|
447
|
+
```plain
|
448
|
+
|
449
|
+
plugins {
|
450
|
+
|
451
|
+
id 'com.android.application'
|
452
|
+
|
453
|
+
}
|
454
|
+
|
455
|
+
|
456
|
+
|
457
|
+
android {
|
458
|
+
|
459
|
+
compileSdk 30
|
460
|
+
|
461
|
+
|
462
|
+
|
463
|
+
defaultConfig {
|
464
|
+
|
465
|
+
applicationId "com.teratail.q362100"
|
466
|
+
|
467
|
+
minSdk 29
|
468
|
+
|
469
|
+
targetSdk 30
|
470
|
+
|
471
|
+
versionCode 1
|
472
|
+
|
473
|
+
versionName "1.0"
|
474
|
+
|
475
|
+
|
476
|
+
|
477
|
+
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
|
478
|
+
|
479
|
+
}
|
480
|
+
|
481
|
+
|
482
|
+
|
483
|
+
buildTypes {
|
484
|
+
|
485
|
+
release {
|
486
|
+
|
487
|
+
minifyEnabled false
|
488
|
+
|
489
|
+
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
|
490
|
+
|
491
|
+
}
|
492
|
+
|
493
|
+
}
|
494
|
+
|
495
|
+
compileOptions {
|
496
|
+
|
497
|
+
sourceCompatibility JavaVersion.VERSION_1_8
|
498
|
+
|
499
|
+
targetCompatibility JavaVersion.VERSION_1_8
|
500
|
+
|
501
|
+
}
|
502
|
+
|
503
|
+
}
|
504
|
+
|
505
|
+
|
506
|
+
|
507
|
+
dependencies {
|
508
|
+
|
509
|
+
|
510
|
+
|
511
|
+
implementation 'androidx.appcompat:appcompat:1.3.1'
|
512
|
+
|
513
|
+
implementation 'com.google.android.material:material:1.4.0'
|
514
|
+
|
515
|
+
implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
|
516
|
+
|
517
|
+
testImplementation 'junit:junit:4.+'
|
518
|
+
|
519
|
+
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
|
520
|
+
|
521
|
+
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
|
522
|
+
|
523
|
+
}
|
524
|
+
|
525
|
+
```
|
1
コード追加
test
CHANGED
@@ -5,3 +5,439 @@
|
|
5
5
|
のみに関しましては、 MySurfaceView に frn 配列へのセッターメソッドを作り、 MainPage で録音後に MySurfaceView インスタンスに対してそのセッターを呼ぶだけに思います。
|
6
6
|
|
7
7
|
ですが、双方とも別スレッドで動作していますので、使用・更新のタイミングを意識しておかないと、表示が乱れる等の現象が発生するかもしれません。
|
8
|
+
|
9
|
+
|
10
|
+
|
11
|
+
----
|
12
|
+
|
13
|
+
|
14
|
+
|
15
|
+
オシロスコープのように動くモノが出来ましたので公開させていただきます。
|
16
|
+
|
17
|
+
|
18
|
+
|
19
|
+
MainActivity.java
|
20
|
+
|
21
|
+
```java
|
22
|
+
|
23
|
+
package com.teratail.q362100;
|
24
|
+
|
25
|
+
|
26
|
+
|
27
|
+
import androidx.appcompat.app.AppCompatActivity;
|
28
|
+
|
29
|
+
import androidx.core.content.ContextCompat;
|
30
|
+
|
31
|
+
|
32
|
+
|
33
|
+
import android.Manifest;
|
34
|
+
|
35
|
+
import android.content.pm.PackageManager;
|
36
|
+
|
37
|
+
import android.media.*;
|
38
|
+
|
39
|
+
import android.os.*;
|
40
|
+
|
41
|
+
import android.widget.Button;
|
42
|
+
|
43
|
+
|
44
|
+
|
45
|
+
public class MainActivity extends AppCompatActivity {
|
46
|
+
|
47
|
+
private static final String TAG = "MainActivity";
|
48
|
+
|
49
|
+
|
50
|
+
|
51
|
+
private static final int PERMISSIONS_REQUEST_RECORD_AUDIO = 99;
|
52
|
+
|
53
|
+
|
54
|
+
|
55
|
+
private static final int AUDIO_SAMPLE_FREQ = 44100;//サンプリング周波数
|
56
|
+
|
57
|
+
private static final int FRAME_RATE = 10;
|
58
|
+
|
59
|
+
private static final String START_TEXT = "START";
|
60
|
+
|
61
|
+
private static final String STOP_TEXT = "STOP";
|
62
|
+
|
63
|
+
|
64
|
+
|
65
|
+
private short audioData[];
|
66
|
+
|
67
|
+
private Button button;
|
68
|
+
|
69
|
+
private HandlerThread listenerThread;
|
70
|
+
|
71
|
+
|
72
|
+
|
73
|
+
public void onCreate(Bundle bundle) {
|
74
|
+
|
75
|
+
super.onCreate(bundle);
|
76
|
+
|
77
|
+
setContentView(R.layout.activity_main);
|
78
|
+
|
79
|
+
setTitle("AudioRecord");
|
80
|
+
|
81
|
+
|
82
|
+
|
83
|
+
SurfaceDrawer surfaceDrawer = new SurfaceDrawer(findViewById(R.id.surfaceView));
|
84
|
+
|
85
|
+
|
86
|
+
|
87
|
+
int frameBufferSize = AUDIO_SAMPLE_FREQ / FRAME_RATE;
|
88
|
+
|
89
|
+
audioData = new short[frameBufferSize];
|
90
|
+
|
91
|
+
|
92
|
+
|
93
|
+
AudioRecord recorder = settingRecorder(AUDIO_SAMPLE_FREQ, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, frameBufferSize);
|
94
|
+
|
95
|
+
|
96
|
+
|
97
|
+
listenerThread = new HandlerThread("RecordPositionUpdateListenerThread");
|
98
|
+
|
99
|
+
listenerThread.start();
|
100
|
+
|
101
|
+
|
102
|
+
|
103
|
+
recorder.setRecordPositionUpdateListener(new AudioRecord.OnRecordPositionUpdateListener() {
|
104
|
+
|
105
|
+
@Override
|
106
|
+
|
107
|
+
public void onMarkerReached(AudioRecord recorder) {}
|
108
|
+
|
109
|
+
@Override
|
110
|
+
|
111
|
+
public void onPeriodicNotification(AudioRecord recorder) {
|
112
|
+
|
113
|
+
recorder.read(audioData, 0, audioData.length);
|
114
|
+
|
115
|
+
surfaceDrawer.draw(audioData);
|
116
|
+
|
117
|
+
}
|
118
|
+
|
119
|
+
}, new Handler(listenerThread.getLooper())); //HandlerThread でリスナを実行
|
120
|
+
|
121
|
+
|
122
|
+
|
123
|
+
button = findViewById(R.id.button);
|
124
|
+
|
125
|
+
button.setText(START_TEXT);
|
126
|
+
|
127
|
+
button.setEnabled(false);
|
128
|
+
|
129
|
+
button.setOnClickListener(v -> {
|
130
|
+
|
131
|
+
switch(button.getText().toString()) { //トグル
|
132
|
+
|
133
|
+
case START_TEXT:
|
134
|
+
|
135
|
+
recorder.startRecording();
|
136
|
+
|
137
|
+
button.setText(STOP_TEXT);
|
138
|
+
|
139
|
+
break;
|
140
|
+
|
141
|
+
case STOP_TEXT:
|
142
|
+
|
143
|
+
recorder.stop();
|
144
|
+
|
145
|
+
button.setText(START_TEXT);
|
146
|
+
|
147
|
+
break;
|
148
|
+
|
149
|
+
}
|
150
|
+
|
151
|
+
});
|
152
|
+
|
153
|
+
|
154
|
+
|
155
|
+
int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO);
|
156
|
+
|
157
|
+
if(permissionCheck == PackageManager.PERMISSION_GRANTED) { // すでにユーザーがパーミッションを許可
|
158
|
+
|
159
|
+
button.setEnabled(true);
|
160
|
+
|
161
|
+
} else { // ユーザーはパーミッションを許可していない
|
162
|
+
|
163
|
+
requestPermissions(new String[]{Manifest.permission.RECORD_AUDIO}, PERMISSIONS_REQUEST_RECORD_AUDIO);
|
164
|
+
|
165
|
+
}
|
166
|
+
|
167
|
+
}
|
168
|
+
|
169
|
+
|
170
|
+
|
171
|
+
@Override
|
172
|
+
|
173
|
+
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
|
174
|
+
|
175
|
+
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
|
176
|
+
|
177
|
+
|
178
|
+
|
179
|
+
if(requestCode == PERMISSIONS_REQUEST_RECORD_AUDIO) {
|
180
|
+
|
181
|
+
if(grantResults[0] != PackageManager.PERMISSION_GRANTED) { // ユーザが許可しなかったらアプリを終了する
|
182
|
+
|
183
|
+
finish();
|
184
|
+
|
185
|
+
}
|
186
|
+
|
187
|
+
button.setEnabled(true);
|
188
|
+
|
189
|
+
}
|
190
|
+
|
191
|
+
}
|
192
|
+
|
193
|
+
|
194
|
+
|
195
|
+
@Override
|
196
|
+
|
197
|
+
protected void onDestroy() {
|
198
|
+
|
199
|
+
super.onDestroy();
|
200
|
+
|
201
|
+
if(listenerThread != null) listenerThread.quit();
|
202
|
+
|
203
|
+
}
|
204
|
+
|
205
|
+
|
206
|
+
|
207
|
+
private AudioRecord settingRecorder(int sampleRateInHz, int channelConfig, int audioFormat, int frameBufferSize) {
|
208
|
+
|
209
|
+
int minBufferSize = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
|
210
|
+
|
211
|
+
if(minBufferSize == AudioRecord.ERROR_BAD_VALUE) throw new IllegalArgumentException();
|
212
|
+
|
213
|
+
if(minBufferSize == AudioRecord.ERROR) throw new IllegalStateException();
|
214
|
+
|
215
|
+
|
216
|
+
|
217
|
+
int bufferSizeInBytes = Math.max(minBufferSize, frameBufferSize*10); //"*10"は余裕分
|
218
|
+
|
219
|
+
|
220
|
+
|
221
|
+
AudioRecord recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, bufferSizeInBytes);
|
222
|
+
|
223
|
+
if(recorder.getState() != AudioRecord.STATE_INITIALIZED) throw new IllegalStateException();
|
224
|
+
|
225
|
+
|
226
|
+
|
227
|
+
if(recorder.setPositionNotificationPeriod(frameBufferSize) != AudioRecord.SUCCESS) throw new IllegalStateException();
|
228
|
+
|
229
|
+
|
230
|
+
|
231
|
+
return recorder;
|
232
|
+
|
233
|
+
}
|
234
|
+
|
235
|
+
}
|
236
|
+
|
237
|
+
```
|
238
|
+
|
239
|
+
レイアウト: activity_main.xml
|
240
|
+
|
241
|
+
```xml
|
242
|
+
|
243
|
+
<?xml version="1.0" encoding="utf-8"?>
|
244
|
+
|
245
|
+
<androidx.constraintlayout.widget.ConstraintLayout
|
246
|
+
|
247
|
+
xmlns:android="http://schemas.android.com/apk/res/android"
|
248
|
+
|
249
|
+
xmlns:app="http://schemas.android.com/apk/res-auto"
|
250
|
+
|
251
|
+
xmlns:tools="http://schemas.android.com/tools"
|
252
|
+
|
253
|
+
android:layout_width="match_parent"
|
254
|
+
|
255
|
+
android:layout_height="match_parent"
|
256
|
+
|
257
|
+
tools:context=".MainActivity">
|
258
|
+
|
259
|
+
|
260
|
+
|
261
|
+
<SurfaceView
|
262
|
+
|
263
|
+
android:id="@+id/surfaceView"
|
264
|
+
|
265
|
+
android:layout_width="0dp"
|
266
|
+
|
267
|
+
android:layout_height="0dp"
|
268
|
+
|
269
|
+
app:layout_constraintBottom_toTopOf="@id/button"
|
270
|
+
|
271
|
+
app:layout_constraintLeft_toLeftOf="parent"
|
272
|
+
|
273
|
+
app:layout_constraintRight_toRightOf="parent"
|
274
|
+
|
275
|
+
app:layout_constraintTop_toTopOf="parent" />
|
276
|
+
|
277
|
+
|
278
|
+
|
279
|
+
<Button
|
280
|
+
|
281
|
+
android:id="@+id/button"
|
282
|
+
|
283
|
+
android:layout_width="0dp"
|
284
|
+
|
285
|
+
android:layout_height="wrap_content"
|
286
|
+
|
287
|
+
android:text="START"
|
288
|
+
|
289
|
+
android:layout_margin="10dp"
|
290
|
+
|
291
|
+
app:layout_constraintBottom_toBottomOf="parent"
|
292
|
+
|
293
|
+
app:layout_constraintLeft_toLeftOf="parent"
|
294
|
+
|
295
|
+
app:layout_constraintRight_toRightOf="parent" />
|
296
|
+
|
297
|
+
|
298
|
+
|
299
|
+
</androidx.constraintlayout.widget.ConstraintLayout>
|
300
|
+
|
301
|
+
```
|
302
|
+
|
303
|
+
SurfaceDrawer.java
|
304
|
+
|
305
|
+
```java
|
306
|
+
|
307
|
+
package com.teratail.q362100;
|
308
|
+
|
309
|
+
|
310
|
+
|
311
|
+
import android.graphics.Canvas;
|
312
|
+
|
313
|
+
import android.graphics.Color;
|
314
|
+
|
315
|
+
import android.graphics.Paint;
|
316
|
+
|
317
|
+
import android.graphics.Path;
|
318
|
+
|
319
|
+
import android.view.SurfaceHolder;
|
320
|
+
|
321
|
+
import android.view.SurfaceView;
|
322
|
+
|
323
|
+
|
324
|
+
|
325
|
+
public class SurfaceDrawer implements SurfaceHolder.Callback {
|
326
|
+
|
327
|
+
private static final String TAG = "SurfaceDrawer";
|
328
|
+
|
329
|
+
|
330
|
+
|
331
|
+
private static final int COMPRESSION_RATE = 10;
|
332
|
+
|
333
|
+
|
334
|
+
|
335
|
+
private SurfaceHolder holder;
|
336
|
+
|
337
|
+
private float canvasWidth, canvasVerticalCenter;
|
338
|
+
|
339
|
+
private Paint pathPaint;
|
340
|
+
|
341
|
+
private Path path = new Path();
|
342
|
+
|
343
|
+
|
344
|
+
|
345
|
+
public SurfaceDrawer(SurfaceView surfaceView) {
|
346
|
+
|
347
|
+
holder = surfaceView.getHolder();
|
348
|
+
|
349
|
+
holder.addCallback(this);
|
350
|
+
|
351
|
+
|
352
|
+
|
353
|
+
pathPaint = new Paint();
|
354
|
+
|
355
|
+
pathPaint.setAntiAlias(true);
|
356
|
+
|
357
|
+
pathPaint.setStrokeWidth(2);//線幅
|
358
|
+
|
359
|
+
pathPaint.setStyle(Paint.Style.STROKE);
|
360
|
+
|
361
|
+
pathPaint.setColor(Color.GREEN);
|
362
|
+
|
363
|
+
}
|
364
|
+
|
365
|
+
|
366
|
+
|
367
|
+
@Override
|
368
|
+
|
369
|
+
public void surfaceCreated(SurfaceHolder holder) {
|
370
|
+
|
371
|
+
Canvas canvas = holder.lockCanvas();
|
372
|
+
|
373
|
+
if(canvas == null) return;
|
374
|
+
|
375
|
+
|
376
|
+
|
377
|
+
canvas.drawColor(Color.BLACK);
|
378
|
+
|
379
|
+
holder.unlockCanvasAndPost(canvas);
|
380
|
+
|
381
|
+
}
|
382
|
+
|
383
|
+
|
384
|
+
|
385
|
+
@Override
|
386
|
+
|
387
|
+
public void surfaceChanged(SurfaceHolder holder, int f, int w, int h) {
|
388
|
+
|
389
|
+
canvasWidth = w;
|
390
|
+
|
391
|
+
canvasVerticalCenter = h / 2;
|
392
|
+
|
393
|
+
}
|
394
|
+
|
395
|
+
|
396
|
+
|
397
|
+
@Override
|
398
|
+
|
399
|
+
public void surfaceDestroyed(SurfaceHolder holder) {
|
400
|
+
|
401
|
+
this.holder = null;
|
402
|
+
|
403
|
+
}
|
404
|
+
|
405
|
+
|
406
|
+
|
407
|
+
public void draw(short[] data) {
|
408
|
+
|
409
|
+
if(data == null || data.length < 2) return;
|
410
|
+
|
411
|
+
|
412
|
+
|
413
|
+
Canvas canvas = holder.lockCanvas();
|
414
|
+
|
415
|
+
if(canvas == null) return;
|
416
|
+
|
417
|
+
|
418
|
+
|
419
|
+
canvas.drawColor(Color.BLACK); //塗り潰し
|
420
|
+
|
421
|
+
|
422
|
+
|
423
|
+
path.reset();
|
424
|
+
|
425
|
+
path.moveTo(0, canvasVerticalCenter + data[0] / COMPRESSION_RATE);
|
426
|
+
|
427
|
+
for(int x=1; x<canvasWidth; x++) {
|
428
|
+
|
429
|
+
path.lineTo(x, canvasVerticalCenter + data[(int)(data.length / canvasWidth * x)] / COMPRESSION_RATE);
|
430
|
+
|
431
|
+
}
|
432
|
+
|
433
|
+
canvas.drawPath(path, pathPaint);
|
434
|
+
|
435
|
+
|
436
|
+
|
437
|
+
holder.unlockCanvasAndPost(canvas);
|
438
|
+
|
439
|
+
}
|
440
|
+
|
441
|
+
}
|
442
|
+
|
443
|
+
```
|