質問編集履歴

3 logcatの追加 退会済みユーザー 2019/02/09 10:43 投稿

自作インターネットアプリが「停止しました」と表示されて起動できない

ご指摘お願いします。

```java

package com.android.internetbrowser;

import android.app.AlertDialog;

import android.app.DownloadManager;

import android.content.DialogInterface;

import android.content.Intent;

import android.net.Uri;

import android.os.Environment;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.SpannableStringBuilder;

import android.util.Log;

import android.view.KeyEvent;

import android.view.View;

import android.webkit.CookieManager;

import android.webkit.DownloadListener;

import android.webkit.URLUtil;

import android.webkit.ValueCallback;

import android.webkit.WebChromeClient;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

WebView webView = findViewById(R.id.webview);

final private int INTENT_CODE = 101;

private ValueCallback<Uri> mUploadMessage;

Button go = findViewById(R.id.go);

Button back = findViewById(R.id.back);

EditText urlbar = findViewById(R.id.urlbar);

ProgressBar progressBar = findViewById(R.id.progressBar);

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

if (savedInstanceState == null) {

webView.loadUrl("https://www.google.com");

}

webView.getSettings().setJavaScriptEnabled(true);

webView.getSettings().setUseWideViewPort(true);

webView.getSettings().setLoadWithOverviewMode(true);

webView.setVerticalScrollbarOverlay(true);

webView.getSettings().setBuiltInZoomControls(true);

webView.getSettings().setDomStorageEnabled(true);

webView.setWebChromeClient(new WebChromeClient() {

// /Android 4.1以上

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {

mUploadMessage = uploadMsg;

Intent i = new Intent(Intent.ACTION_GET_CONTENT);

i.addCategory(Intent.CATEGORY_OPENABLE);

i.setType("image/*");

startActivityForResult(Intent.createChooser(i, "画像選択"), INTENT_CODE);

}

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {

mUploadMessage = uploadMsg;

Intent i = new Intent(Intent.ACTION_GET_CONTENT);

i.addCategory(Intent.CATEGORY_OPENABLE);

i.setType("image/*");

startActivityForResult(Intent.createChooser(i, "画像選択"), INTENT_CODE);

}

// Android 3.0未満

public void openFileChooser(ValueCallback<Uri> uploadMsg) {

openFileChooser(uploadMsg, "", "");

}

});

webView.setDownloadListener(new DownloadListener() {

@Override

public void onDownloadStart(String url, String userAgent,

String contentDisposition, String mimetype,

long contentLength) {

DownloadManager.Request request = new DownloadManager.Request(

Uri.parse(url));

request.allowScanningByMediaScanner();

request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed!

request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "Name of your downloadble file goes here, example: Mathematics II ");

DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);

dm.enqueue(request);

Toast.makeText(getApplicationContext(), "Downloading File", //To notify the Client that the file is being downloaded

Toast.LENGTH_LONG).show();

}

});

go.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

CharSequence url = urlbar.getText();

if (url==""){

}else{

webView.loadUrl(url.toString());

}

});

back.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

webView.goBack();

}

});

webView.setWebViewClient(new WebViewClient(){

@Override

public void onPageFinished(WebView view,String url) {

url = webView.getUrl();

urlbar.setText(url, TextView.BufferType.NORMAL);

}

});

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_BACK) {

if (webView.canGoBack()) {

webView.goBack();

} else {

AlertDialog.Builder alertDialog=new AlertDialog.Builder(this);

// ダイアログの設定

alertDialog.setTitle("確認"); //タイトル設定

alertDialog.setMessage("終了しますか？"); //内容(メッセージ)設定

// OK(肯定的な)ボタンの設定

alertDialog.setPositiveButton("はい", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

finishAndRemoveTask();

}

});

alertDialog.setNeutralButton("いいえ", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

}

});

alertDialog.show();

}

return true;

}

return super.onKeyDown(keyCode, event);

}

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

webView.saveState(outState);

}

@Override

protected void onRestoreInstanceState(Bundle savedInstanceState) {

super.onRestoreInstanceState(savedInstanceState);

webView.restoreState(savedInstanceState);

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

if (requestCode == INTENT_CODE) {

if (null == mUploadMessage) return;

Uri result = (intent == null || resultCode != RESULT_OK) ? null : intent.getData();

mUploadMessage.onReceiveValue(result);

mUploadMessage = null;

}

private class MyWebViewClient extends WebViewClient {

@Override

public void onPageStarted(WebView view, String url, android.graphics.Bitmap favicon) {

super.onPageStarted(view, url, favicon);

progressBar.setVisibility(View.VISIBLE); // 読み込み開始時にプログレスバー表示

}

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

progressBar.setVisibility(View.GONE); // 読み込み完了時にプログレスバー非表示

}

protected class MyWebChromeClient extends WebChromeClient {

public void onProgressChanged(WebView view, int progress) {

progressBar.setProgress(progress); // プログレスバーの進捗を更新

}

```

```logcat

2019-02-09 10:40:20.272 604-617/system_process D/Sensors: batch handle 6, but there is no batch sensor in genymotion

2019-02-09 10:40:20.279 604-827/system_process D/Sensors: batch handle 1, but there is no batch sensor in genymotion

2019-02-09 10:40:20.282 604-649/system_process D/PressureSensor: pressure event 1013.000000

2019-02-09 10:40:21.273 604-670/system_process W/WifiMode: WiredSSID, Invalid SupportedRates!!!

2019-02-09 10:40:21.273 604-672/system_process W/WifiMode: WiredSSID, Invalid SupportedRates!!!

2019-02-09 10:40:21.274 604-670/system_process W/WifiMode: WiredSSID, Invalid SupportedRates!!!

2019-02-09 10:40:21.777 604-2123/system_process D/Sensors: batch handle 1, but there is no batch sensor in genymotion

2019-02-09 10:41:43.460 604-618/system_process D/Sensors: batch handle 6, but there is no batch sensor in genymotion

2019-02-09 10:41:43.470 604-649/system_process D/PressureSensor: pressure event 1013.000000

```

![](a59f123de0abbdc6212c5ced33bfe9fd.png)

Android

10362 questions

Androidは、Google社が開発したスマートフォンやタブレットなど携帯端末向けのプラットフォームです。カーネル・ミドルウェア・ユーザーインターフェイス・ウェブブラウザ・電話帳などのアプリケーションやソフトウェアをひとつにまとめて構成。カーネル・ライブラリ・ランタイムはほとんどがC言語/C++、アプリケーションなどはJavaSEのサブセットとAndroid環境で書かれています。

2 写真の追加 退会済みユーザー 2019/02/09 10:35 投稿

自作インターネットアプリが「停止しました」と表示されて起動できない

ご指摘お願いします。

```java

package com.android.internetbrowser;

import android.app.AlertDialog;

import android.app.DownloadManager;

import android.content.DialogInterface;

import android.content.Intent;

import android.net.Uri;

import android.os.Environment;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.SpannableStringBuilder;

import android.util.Log;

import android.view.KeyEvent;

import android.view.View;

import android.webkit.CookieManager;

import android.webkit.DownloadListener;

import android.webkit.URLUtil;

import android.webkit.ValueCallback;

import android.webkit.WebChromeClient;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

WebView webView = findViewById(R.id.webview);

final private int INTENT_CODE = 101;

private ValueCallback<Uri> mUploadMessage;

Button go = findViewById(R.id.go);

Button back = findViewById(R.id.back);

EditText urlbar = findViewById(R.id.urlbar);

ProgressBar progressBar = findViewById(R.id.progressBar);

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

if (savedInstanceState == null) {

webView.loadUrl("https://www.google.com");

}

webView.getSettings().setJavaScriptEnabled(true);

webView.getSettings().setUseWideViewPort(true);

webView.getSettings().setLoadWithOverviewMode(true);

webView.setVerticalScrollbarOverlay(true);

webView.getSettings().setBuiltInZoomControls(true);

webView.getSettings().setDomStorageEnabled(true);

webView.setWebChromeClient(new WebChromeClient() {

// /Android 4.1以上

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {

mUploadMessage = uploadMsg;

Intent i = new Intent(Intent.ACTION_GET_CONTENT);

i.addCategory(Intent.CATEGORY_OPENABLE);

i.setType("image/*");

startActivityForResult(Intent.createChooser(i, "画像選択"), INTENT_CODE);

}

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {

mUploadMessage = uploadMsg;

Intent i = new Intent(Intent.ACTION_GET_CONTENT);

i.addCategory(Intent.CATEGORY_OPENABLE);

i.setType("image/*");

startActivityForResult(Intent.createChooser(i, "画像選択"), INTENT_CODE);

}

// Android 3.0未満

public void openFileChooser(ValueCallback<Uri> uploadMsg) {

openFileChooser(uploadMsg, "", "");

}

});

webView.setDownloadListener(new DownloadListener() {

@Override

public void onDownloadStart(String url, String userAgent,

String contentDisposition, String mimetype,

long contentLength) {

DownloadManager.Request request = new DownloadManager.Request(

Uri.parse(url));

request.allowScanningByMediaScanner();

request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed!

request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "Name of your downloadble file goes here, example: Mathematics II ");

DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);

dm.enqueue(request);

Toast.makeText(getApplicationContext(), "Downloading File", //To notify the Client that the file is being downloaded

Toast.LENGTH_LONG).show();

}

});

go.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

CharSequence url = urlbar.getText();

if (url==""){

}else{

webView.loadUrl(url.toString());

}

});

back.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

webView.goBack();

}

});

webView.setWebViewClient(new WebViewClient(){

@Override

public void onPageFinished(WebView view,String url) {

url = webView.getUrl();

urlbar.setText(url, TextView.BufferType.NORMAL);

}

});

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_BACK) {

if (webView.canGoBack()) {

webView.goBack();

} else {

AlertDialog.Builder alertDialog=new AlertDialog.Builder(this);

// ダイアログの設定

alertDialog.setTitle("確認"); //タイトル設定

alertDialog.setMessage("終了しますか？"); //内容(メッセージ)設定

// OK(肯定的な)ボタンの設定

alertDialog.setPositiveButton("はい", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

finishAndRemoveTask();

}

});

alertDialog.setNeutralButton("いいえ", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

}

});

alertDialog.show();

}

return true;

}

return super.onKeyDown(keyCode, event);

}

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

webView.saveState(outState);

}

@Override

protected void onRestoreInstanceState(Bundle savedInstanceState) {

super.onRestoreInstanceState(savedInstanceState);

webView.restoreState(savedInstanceState);

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

if (requestCode == INTENT_CODE) {

if (null == mUploadMessage) return;

Uri result = (intent == null || resultCode != RESULT_OK) ? null : intent.getData();

mUploadMessage.onReceiveValue(result);

mUploadMessage = null;

}

private class MyWebViewClient extends WebViewClient {

@Override

public void onPageStarted(WebView view, String url, android.graphics.Bitmap favicon) {

super.onPageStarted(view, url, favicon);

progressBar.setVisibility(View.VISIBLE); // 読み込み開始時にプログレスバー表示

}

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

progressBar.setVisibility(View.GONE); // 読み込み完了時にプログレスバー非表示

}

protected class MyWebChromeClient extends WebChromeClient {

public void onProgressChanged(WebView view, int progress) {

progressBar.setProgress(progress); // プログレスバーの進捗を更新

}

```

![](a59f123de0abbdc6212c5ced33bfe9fd.png)

Android

10362 questions

Androidは、Google社が開発したスマートフォンやタブレットなど携帯端末向けのプラットフォームです。カーネル・ミドルウェア・ユーザーインターフェイス・ウェブブラウザ・電話帳などのアプリケーションやソフトウェアをひとつにまとめて構成。カーネル・ライブラリ・ランタイムはほとんどがC言語/C++、アプリケーションなどはJavaSEのサブセットとAndroid環境で書かれています。

1 追加しました 退会済みユーザー 2019/02/09 10:32 投稿

インターネットアプリが落ちる

自作インターネットアプリが「停止しました」と表示されて起動できない

~~アプリが落ちるところが、分かりません。~~

ご指摘お願いします。

```java

package com.android.internetbrowser;

import android.app.AlertDialog;

import android.app.DownloadManager;

import android.content.DialogInterface;

import android.content.Intent;

import android.net.Uri;

import android.os.Environment;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.SpannableStringBuilder;

import android.util.Log;

import android.view.KeyEvent;

import android.view.View;

import android.webkit.CookieManager;

import android.webkit.DownloadListener;

import android.webkit.URLUtil;

import android.webkit.ValueCallback;

import android.webkit.WebChromeClient;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

WebView webView = findViewById(R.id.webview);

final private int INTENT_CODE = 101;

private ValueCallback<Uri> mUploadMessage;

Button go = findViewById(R.id.go);

Button back = findViewById(R.id.back);

EditText urlbar = findViewById(R.id.urlbar);

ProgressBar progressBar = findViewById(R.id.progressBar);

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

if (savedInstanceState == null) {

webView.loadUrl("https://www.google.com");

}

webView.getSettings().setJavaScriptEnabled(true);

webView.getSettings().setUseWideViewPort(true);

webView.getSettings().setLoadWithOverviewMode(true);

webView.setVerticalScrollbarOverlay(true);

webView.getSettings().setBuiltInZoomControls(true);

webView.getSettings().setDomStorageEnabled(true);

webView.setWebChromeClient(new WebChromeClient() {

// /Android 4.1以上

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {

mUploadMessage = uploadMsg;

Intent i = new Intent(Intent.ACTION_GET_CONTENT);

i.addCategory(Intent.CATEGORY_OPENABLE);

i.setType("image/*");

startActivityForResult(Intent.createChooser(i, "画像選択"), INTENT_CODE);

}

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {

mUploadMessage = uploadMsg;

Intent i = new Intent(Intent.ACTION_GET_CONTENT);

i.addCategory(Intent.CATEGORY_OPENABLE);

i.setType("image/*");

startActivityForResult(Intent.createChooser(i, "画像選択"), INTENT_CODE);

}

// Android 3.0未満

public void openFileChooser(ValueCallback<Uri> uploadMsg) {

openFileChooser(uploadMsg, "", "");

}

});

webView.setDownloadListener(new DownloadListener() {

@Override

public void onDownloadStart(String url, String userAgent,

String contentDisposition, String mimetype,

long contentLength) {

DownloadManager.Request request = new DownloadManager.Request(

Uri.parse(url));

request.allowScanningByMediaScanner();

request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed!

request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "Name of your downloadble file goes here, example: Mathematics II ");

DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);

dm.enqueue(request);

Toast.makeText(getApplicationContext(), "Downloading File", //To notify the Client that the file is being downloaded

Toast.LENGTH_LONG).show();

}

});

go.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

CharSequence url = urlbar.getText();

if (url==""){

}else{

webView.loadUrl(url.toString());

}

});

back.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

webView.goBack();

}

});

webView.setWebViewClient(new WebViewClient(){

@Override

public void onPageFinished(WebView view,String url) {

url = webView.getUrl();

urlbar.setText(url, TextView.BufferType.NORMAL);

}

});

}

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_BACK) {

if (webView.canGoBack()) {

webView.goBack();

} else {

AlertDialog.Builder alertDialog=new AlertDialog.Builder(this);

// ダイアログの設定

alertDialog.setTitle("確認"); //タイトル設定

alertDialog.setMessage("終了しますか？"); //内容(メッセージ)設定

// OK(肯定的な)ボタンの設定

alertDialog.setPositiveButton("はい", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

finishAndRemoveTask();

}

});

alertDialog.setNeutralButton("いいえ", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int which) {

}

});

alertDialog.show();

}

return true;

}

return super.onKeyDown(keyCode, event);

}

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

webView.saveState(outState);

}

@Override

protected void onRestoreInstanceState(Bundle savedInstanceState) {

super.onRestoreInstanceState(savedInstanceState);

webView.restoreState(savedInstanceState);

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

if (requestCode == INTENT_CODE) {

if (null == mUploadMessage) return;

Uri result = (intent == null || resultCode != RESULT_OK) ? null : intent.getData();

mUploadMessage.onReceiveValue(result);

mUploadMessage = null;

}

private class MyWebViewClient extends WebViewClient {

@Override

public void onPageStarted(WebView view, String url, android.graphics.Bitmap favicon) {

super.onPageStarted(view, url, favicon);

progressBar.setVisibility(View.VISIBLE); // 読み込み開始時にプログレスバー表示

}

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

progressBar.setVisibility(View.GONE); // 読み込み完了時にプログレスバー非表示

}

protected class MyWebChromeClient extends WebChromeClient {

public void onProgressChanged(WebView view, int progress) {

progressBar.setProgress(progress); // プログレスバーの進捗を更新

}

```

Android

10362 questions

Androidは、Google社が開発したスマートフォンやタブレットなど携帯端末向けのプラットフォームです。カーネル・ミドルウェア・ユーザーインターフェイス・ウェブブラウザ・電話帳などのアプリケーションやソフトウェアをひとつにまとめて構成。カーネル・ライブラリ・ランタイムはほとんどがC言語/C++、アプリケーションなどはJavaSEのサブセットとAndroid環境で書かれています。

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