android – 如何停止或暂停Pandora和Spotify

我有一个应用程序,具有启动应用程序,Pandora工作站或快捷方式的功能.一切正常.后来我想停止我开始的应用程序.这适用于大多数事情,除了潘多拉和Spotify并不总是关闭.有时他们这样做但并不总是.它似乎与当前的UI状态有关.例如,当我有Pandora显示或主屏幕显示时,它工作正常.当Home Dock或Car Mode处于活动状态时,它不起作用.你可以在这里看到我的所有源代码：http://code.google.com/p/a2dpvolume/
service.java是具有此功能的文件.

以下是该代码中试图阻止播放音乐然后停止应用程序的部分.

if (bt2.hasIntent()) {
        // if music is playing, pause it
        if (am2.isMusicActive()) {
            // first pause the music so it removes the notify icon
            Intent i = new Intent("com.android.music.musicservicecommand");
            i.putExtra("command", "pause");
            sendBroadcast(i);
            // for more stubborn players, try this too...
            Intent downIntent2 = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
            KeyEvent downEvent2 = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_STOP);
            downIntent2.putExtra(Intent.EXTRA_KEY_EVENT, downEvent2);
            sendOrderedBroadcast(downIntent2, null);
        }

        // if we opened a package for this device, try to close it now
        if (bt2.getPname().length() > 3 && bt2.isAppkill()) {
            // also open the home screen to make music app revert to
            // background
            Intent startMain = new Intent(Intent.ACTION_MAIN);
            startMain.addCategory(Intent.CATEGORY_HOME);
            startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(startMain);
            // now we can kill the app is asked to

            final String kpackage = bt2.getPname();
            CountDownTimer killTimer = new CountDownTimer(6000, 3000) {
                @Override
                public void onFinish() {
                    try {
                        stopApp(kpackage);
                    } catch (Exception e) {
                        e.printStackTrace();
                        Log.e(LOG_TAG, "Error " + e.getMessage());
                    }
                }

                @Override
                public void onTick(long arg0) {

                    if (am2.isMusicActive()) {

                        // for more stubborn players, try this too...
                        Intent downIntent2 = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
                        KeyEvent downEvent2 = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_STOP);
                        downIntent2.putExtra(Intent.EXTRA_KEY_EVENT, downEvent2);
                        sendOrderedBroadcast(downIntent2, null);
                    }

                    try {
                        stopApp(kpackage);
                    } catch (Exception e) {
                        e.printStackTrace();
                        Log.e(LOG_TAG, "Error " + e.getMessage());
                    }
                }
            };
            killTimer.start();

        }
    }

这是函数stopApp().

protected void stopApp(String packageName) {
    Intent mIntent = getPackageManager().getLaunchIntentForPackage(
            packageName);
    if (mIntent != null) {
        try {

            ActivityManager act1 = (ActivityManager) this
                    .getSystemService(ACTIVITY_SERVICE);
            // act1.restartPackage(packageName);
            act1.killBackgroundProcesses(packageName);
            List<ActivityManager.RunningAppProcessInfo> processes;
            processes = act1.getRunningAppProcesses();
            for (ActivityManager.RunningAppProcessInfo info : processes) {
                for (int i = 0; i < info.pkgList.length; i++) {
                    if (info.pkgList[i].contains(packageName)) {
                        android.os.Process.killProcess(info.pid);
                    }
                }
            }
        } catch (ActivityNotFoundException err) {
            err.printStackTrace();
            Toast t = Toast.makeText(getApplicationContext(),
                    R.string.app_not_found, Toast.LENGTH_SHORT);
            if (notify)
                t.show();
        }

    }
}

还有其他人遇到过这个问题吗？如何可靠地停止启动的应用程序？我需要首先让它暂停并将其放在后台.这就是我遇到的问题.它适用于大多数情况,但不是全部.有些情况下,Pandora和Spotify不会响应发送的关键事件,他们只是继续玩.这会使通知图标保持活动状态,并使应用程序成为前台活动,因此我无法阻止它.

解决方法:

我终于发现Pandora在看到耳机断开时会暂停音乐.因此,我只需发送断开连接意图,以便Pandora暂停.暂停后,它可以被推到后台并被杀死.

//Try telling the system the headset just disconnected to stop other players
            Intent j = new Intent("android.intent.action.HEADSET_PLUG");
            j.putExtra("state", 0);
            sendBroadcast(j);

标签：spotify,android,pandora
来源： https://codeday.me/bug/20190902/1789364.html