android 最前面にオーバーレイで画像を表示したい

Question

前提

androidの最前面にオーバーレイで画像を表示するアプリをこのページを参考にして作っていますが画像が表示されません。

実現したいこと

最前面にオーバーレイで画像を表示したい。

発生している問題・エラーメッセージ

エラーメッセージはないが画像が表示されない。

該当のソースコード

package xxx

import android.content.Intent
import android.net.Uri
import android.os.Bundle
import android.provider.Settings
import android.view.View
import android.widget.Button
import android.widget.Toast
import androidx.activity.result.ActivityResult
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AppCompatActivity


class MainActivity : AppCompatActivity() {
    private var intentService: Intent? = null
    private val launcher = registerForActivityResult<Intent, ActivityResult>(
        ActivityResultContracts.StartActivityForResult()
    ) { result: ActivityResult? ->
        if (Settings.canDrawOverlays(this)) {
            startForegroundService(intentService)
        } else {
            Toast.makeText(
                application, R.string.message,
                Toast.LENGTH_LONG
            ).show()
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        intentService = Intent(application, TestService::class.java)

        // Serviceを開始するためのボタン
        val buttonStart = findViewById<Button>(R.id.button_start)
        buttonStart.setOnClickListener { v: View? ->
            if (Settings.canDrawOverlays(this)) {
                startForegroundService(intentService)
            } else {
                val intent = Intent(
                    Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                    Uri.parse("package:$packageName")

                )
                startActivity(intent)
                launcher.launch(intent)
            }
        }
    }
}

package xxx

import android.app.*
import android.content.Context
import android.content.Intent
import android.graphics.PixelFormat
import android.os.IBinder
import android.util.Log
import android.view.*


class TestService : Service() {
    private var context: Context? = null
    private var notificationManager: NotificationManager? = null
    private var newView: View? = null
    private var windowManager: WindowManager? = null
    override fun onCreate() {
        super.onCreate()
        context = applicationContext
        notificationManager = context!!
            .getSystemService(NOTIFICATION_SERVICE) as NotificationManager

        // inflaterの生成
        val layoutInflater = LayoutInflater.from(this)

        // レイアウトファイルからInfalteするViewを作成
        val nullParent: ViewGroup? = null
        newView = layoutInflater.inflate(R.layout.service_layer, nullParent)
    }

    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
        val channelId = "default"
        val title = context!!.getString(R.string.app_name)
        val pendingIntent = PendingIntent.getActivity(
            context, 0, intent,
            PendingIntent.FLAG_MUTABLE
        )

        // Notification　Channel 設定
        val channel = NotificationChannel(
            channelId, title, NotificationManager.IMPORTANCE_DEFAULT
        )
        if (notificationManager != null) {
            notificationManager!!.createNotificationChannel(channel)
            val notification = Notification.Builder(context, channelId)
                .setContentTitle(title) // android標準アイコンから
                .setSmallIcon(android.R.drawable.btn_star)
                .setContentText("APPLICATION_OVERLAY")
                .setAutoCancel(true)
                .setContentIntent(pendingIntent)
                .setWhen(System.currentTimeMillis())
                .build()

            // startForeground
            startForeground(1, notification)
        }
        val typeLayer = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
        windowManager = applicationContext
            .getSystemService(WINDOW_SERVICE) as WindowManager
        val params = WindowManager.LayoutParams(
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.WRAP_CONTENT,
            typeLayer, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    or WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
            PixelFormat.TRANSLUCENT
        )

        // dipを取得
        val dpScale = resources.displayMetrics.density.toInt()

        // 右上に配置
        params.gravity = Gravity.TOP or Gravity.END
        params.x = 20 * dpScale // 20dp
        params.y = 80 * dpScale // 80dp

        // ViewにTouchListenerを設定する
        newView!!.setOnTouchListener { v: View?, event: MotionEvent ->
            Log.d("debug", "onTouch")
            if (event.action == MotionEvent.ACTION_DOWN) {
                Log.d("debug", "ACTION_DOWN")
            }
            if (event.action == MotionEvent.ACTION_UP) {
                Log.d("debug", "ACTION_UP")

                // warning: override performClick()
                newView!!.performClick()

                // Serviceを自ら停止させる
                stopSelf()
            }
            false
        }

        // Viewを画面上に追加
        windowManager!!.addView(newView, params)
        return super.onStartCommand(intent, flags, startId)
    }

    override fun onDestroy() {
        super.onDestroy()
        Log.d("debug", "onDestroy")
        // Viewを削除
        windowManager!!.removeView(newView)
    }

    override fun onBind(intent: Intent): IBinder? {
        return null
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button_start"
        android:text="@string/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:contentDescription="@string/description"
        android:src="@drawable/gazou" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="io.github.takogori.datausagetest3">

    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Datausagetest3"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

補足情報（FW/ツールのバージョンなど）

Android Studioのバージョン：Android Studio Chipmunk | 2021.2.1 Patch 2
使用している言語：kotlin
min sdk version：API26 Android8.0 (Marshmallow)
使用している実機：Pixel5a(android12)

Comments

[jimbe]

drawable/gazou はどのようなファイルでしょうか。

[jimbe]

androidmanifest.xml にサービスの定義が見当たらないようですが…合っていますか?
ボタンを押した時に logcat に「W/ActivityManager: Unable to start service Intent { cmp=[パッケージ名]/.TestService } U=0: not found」といったメッセージは出ていませんか?

[takori]

ありがとうございます。
・drawable/gazou は800×720のPNG画像（32-bitcolor 14.02kb）です。
・ボタンを押してもlogcatに「W/ActivityManager: Unable to start service Intent { cmp=[パッケージ名]/.TestService } U=0: not found」というメッセージは表示されなかったです。
一応、実行した後のlogcatはこんな感じです。↓

2022-08-26 13:38:19.682 4822-4822/io.github.takogori.datausagetest3 W/ziparchive: Unable to open '/data/app/~~PRooV54ur_iH3VRz3GHUjg==/io.github.takogori.datausagetest3-eOaCD2NSnqcZwce0bQP5nw==/base.dm': No such file or directory
2022-08-26 13:38:19.613 4822-4822/? I/.datausagetest: Late-enabling -Xcheck:jni
2022-08-26 13:38:19.641 4822-4822/? D/ProcessState: Binder ioctl to enable oneway spam detection failed: Invalid argument
2022-08-26 13:38:19.650 4822-4822/? W/re-initialized>: type=1400 audit(0.0:7698): avc: granted { execute } for path="/data/data/io.github.takogori.datausagetest3/code_cache/startup_agents/4ba71210-agent.so" dev="dm-34" ino=135047 scontext=u:r:untrusted_app:s0:c15,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c15,c257,c512,c768 tclass=file app=io.github.takogori.datausagetest3
2022-08-26 13:38:19.657 4822-4822/? V/studio.deploy: No existing instrumentation found. Loading instrumentation from instruments-1f2f27f8.jar
2022-08-26 13:38:19.663 4822-4822/io.github.takogori.datausagetest3 W/.datausagetest: DexFile /data/data/io.github.takogori.datausagetest3/code_cache/.studio/instruments-1f2f27f8.jar is in boot class path but is not in a known location
2022-08-26 13:38:19.664 4822-4822/io.github.takogori.datausagetest3 V/studio.deploy: Applying transforms with cached classes
2022-08-26 13:38:19.670 4822-4822/io.github.takogori.datausagetest3 W/.datausagetest: Redefining intrinsic method java.lang.Thread java.lang.Thread.currentThread(). This may cause the unexpected use of the original definition of java.lang.Thread java.lang.Thread.currentThread()in methods that have already been compiled.
2022-08-26 13:38:19.670 4822-4822/io.github.takogori.datausagetest3 W/.datausagetest: Redefining intrinsic method boolean java.lang.Thread.interrupted(). This may cause the unexpected use of the original definition of boolean java.lang.Thread.interrupted()in methods that have already been compiled.
2022-08-26 13:38:19.673 4822-4822/io.github.takogori.datausagetest3 D/CompatibilityChangeReporter: Compat change id reported: 171979766; UID 10271; state: ENABLED
2022-08-26 13:38:19.682 4822-4822/io.github.takogori.datausagetest3 W/ziparchive: Unable to open '/data/app/~~PRooV54ur_iH3VRz3GHUjg==/io.github.takogori.datausagetest3-eOaCD2NSnqcZwce0bQP5nw==/base.dm': No such file or directory
2022-08-26 13:38:19.793 4822-4822/io.github.takogori.datausagetest3 V/GraphicsEnvironment: ANGLE Developer option for 'io.github.takogori.datausagetest3' set to: 'default'
2022-08-26 13:38:19.794 4822-4822/io.github.takogori.datausagetest3 V/GraphicsEnvironment: ANGLE GameManagerService for io.github.takogori.datausagetest3: false
2022-08-26 13:38:19.794 4822-4822/io.github.takogori.datausagetest3 V/GraphicsEnvironment: Updatable production driver is not supported on the device.
2022-08-26 13:38:19.796 4822-4822/io.github.takogori.datausagetest3 D/NetworkSecurityConfig: No Network Security Config specified, using platform default
2022-08-26 13:38:19.796 4822-4822/io.github.takogori.datausagetest3 D/NetworkSecurityConfig: No Network Security Config specified, using platform default
2022-08-26 13:38:19.870 4822-4822/io.github.takogori.datausagetest3 W/.datausagetest: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (unsupported, reflection, allowed)
2022-08-26 13:38:19.870 4822-4822/io.github.takogori.datausagetest3 W/.datausagetest: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (unsupported, reflection, allowed)
2022-08-26 13:38:19.942 4822-4842/io.github.takogori.datausagetest3 I/AdrenoGLES-0: QUALCOMM build : 4783c89, I46ff5fc46f
Build Date : 11/30/20
OpenGL ES Shader Compiler Version: EV031.31.04.01
Local Branch : QPR2
Remote Branch :
Remote Branch :
Reconstruct Branch :
2022-08-26 13:38:19.942 4822-4842/io.github.takogori.datausagetest3 I/AdrenoGLES-0: Build Config : S P 10.0.4 AArch64
2022-08-26 13:38:19.942 4822-4842/io.github.takogori.datausagetest3 I/AdrenoGLES-0: Driver Path : /vendor/lib64/egl/libGLESv2_adreno.so
2022-08-26 13:38:19.943 4822-4842/io.github.takogori.datausagetest3 D/hw-ProcessState: Binder ioctl to enable oneway spam detection failed: Invalid argument
2022-08-26 13:38:19.946 4822-4842/io.github.takogori.datausagetest3 I/AdrenoGLES-0: PFP: 0x016dd093, ME: 0x00000000
2022-08-26 13:38:19.952 4822-4842/io.github.takogori.datausagetest3 W/AdrenoUtils: <ReadGpuID_from_sysfs:197>: Failed to open /sys/class/kgsl/kgsl-3d0/gpu_model
2022-08-26 13:38:19.952 4822-4842/io.github.takogori.datausagetest3 W/AdrenoUtils: <ReadGpuID:221>: Failed to read chip ID from gpu_model. Fallback to use the GSL path
2022-08-26 13:38:19.957 4822-4842/io.github.takogori.datausagetest3 D/hw-ProcessState: Binder ioctl to enable oneway spam detection failed: Invalid argument
2022-08-26 13:38:49.308 4822-4835/io.github.takogori.datausagetest3 W/System: A resource failed to call close.

[takori]

androidmanifest.xml にサービスを宣言したら表示されました！ありがとうございます。

[jimbe]

> メッセージは表示されなかったです。

そういえばウチの実機は Android10 でしたので、もしかしたらバージョンで表示が違うのかもしれませんね。

Answer 1

androidmanifest.xml にサービスを宣言したら表示されました。