Android Java在前台服务运行时从应用项目中的子模块获取主要活动

Question

我正在写一个音频播放器类型的应用与离子和电容，一切都很好。

设置：

• 我的应用程序正在Android上播放音频。
• 我已经在我的插件中添加了前台服务（如果你离开应用程序，Android需要播放音频，这样你就可以显示启动/停止的通知）。
• 这些都很好。

问题：

不起作用的是从项目中的模块 capacitor-plugin-remote-audio.myforegroundservice中从 app访问 mainactivity。这可能吗？

图文并茂的截图来展示问题：

相关的代码块

    /* Used to build and start foreground service. */
    public void startForegroundService()
    {
        Log.d(TAG, "Start foreground service.");

        // Create notification default intent to open the MainActivity from Capacitor app when tapped.
        Intent intent = new Intent(this, "What goes here to get the MainActivity");
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, mainAppIntent, 0);

        createNotificationChannel();

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
            .setOngoing(true)
            .setPriority(NotificationManager.IMPORTANCE_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .setShowWhen(false)
            .setSmallIcon(android.R.drawable.ic_media_play) // TODO: fix this to use the app icon.
            .setContentTitle("Content Title");

        if (mainAppPendingIntent != null) {
            builder.setContentIntent(mainAppPendingIntent);
        }

        addPlayAndPauseButtons(builder);

        startForeground(1, builder.build());
    }

Answer 1

您正在尝试从另一个模块打开一个activity。检查这个答案，就可以解决你的问题。

Answer 2

启动服务时：

添加额外的包名（可能不硬编码，但随便）：

// Start the foreground service + show required notification.
String packageName = getActivity().getPackageName();
Intent intent = new Intent(getContext(), MyForegroundService.class);
intent.putExtra(MyForegroundService.EXTRA_Top_Level_Package_Name, packageName);
intent.setAction(MyForegroundService.ACTION_START);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    getContext().startForegroundService(intent);
} else {
    getContext().startService(intent);
}

在服务中：

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    if(intent != null)
    {
        String action = intent.getAction();

        switch (action)
        {
            case ACTION_START:
                String packageName = intent.getExtras().get(EXTRA_Top_Level_Package_Name).toString();
                startForegroundService(packageName);
                break;
            case ACTION_STOP:
                stopForegroundService();
                break;
        }
    }
    return super.onStartCommand(intent, flags, startId);
}

启动方法

/* Used to build and start foreground service. */
public void startForegroundService(String packageName)
{
    Log.d(TAG, "Start foreground service.");

    // Create notification default intent to open the MainActivity from Capacitor app when tapped.
    Intent intent = getPackageManager().getLaunchIntentForPackage(packageName);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

    createNotificationChannel();

    NotificationCompat.Builder builder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
        .setOngoing(true)
        .setPriority(NotificationManager.IMPORTANCE_MIN)
        .setCategory(Notification.CATEGORY_SERVICE)
        .setShowWhen(false)
        .setSmallIcon(android.R.drawable.ic_media_play) // TODO: fix this to use the app icon.
        .setContentTitle("Content Title")
        .setContentIntent(pendingIntent);

    addPlayAndPauseButtons(builder);

    startForeground(1, builder.build());
}