不能在Android上停止AudioTrack 5 [英] Cannot stop AudioTrack on Android 5

问题描述

我无法在一台Nexus 4运行的是Android 5.0.1停止播放的 AudioTrack 的。难道我做错了什么？

I cannot stop playback of an AudioTrack on a Nexus 4 running Android 5.0.1. Am I doing something wrong?

在code是很简单的（它实际上只是一个测试应用程序），它完美的作品上运行2.3.6和4.4设备。以下是有关部分：

The code is very simple (it's actually just a test app) and it works perfectly on devices running 2.3.6 and 4.4. Here's the relevant portion:

mPlugReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if(Intent.ACTION_HEADSET_PLUG.equals(intent.getAction())) {
            boolean plugged = intent.getIntExtra("state", 0) == 1;
            if(plugged) {
                log.debug("audio device plugged");
                boolean mic = intent.getIntExtra("microphone", 0) == 1;
                if(mic) {
                    log.debug("microphone detected");
                    mPowerTone.play();
                }
            }
        }
        else if(AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals(intent.getAction())) {
            log.debug("stopping power tone");
            mPowerTone.pause();
            mPowerTone.flush();
            mPowerTone.stop();
        }               
    }           
};

在5.0.1，它记录的制动力调但是赛道继续玩！它甚至继续发挥我退出程序之后。有时，几秒钟后停止，有时我不得不强制关闭应用程序。

On 5.0.1, it logs "stopping power tone" but the track continues to play! It even continues to play after I exit the app. Sometimes it stops after a few seconds, and sometimes I have to force close the app.

我都试过有和没有调用暂停（）和的flush（），都无济于事。它的工作原理而对旧设备的电话。

I tried both with and without the calls to pause() and flush(), to no avail. It works without those calls on the older devices.

推荐答案

<一个href="http://stackoverflow.com/questions/24479158/audiotrack-doesnt-stop-with-audiotrack-stop-since-last-android-version">This悬而未决的问题带我到一个解决方案。如果你调用 AudioTrack＃停止（）的棒棒糖，即使在实际工作相结合的方法，播放也不会停止！您必须使用一个条件是这样的：

This unanswered question led me to a solution. If you call AudioTrack#stop() on Lollipop, even in conjunction with the methods that actually work, playback will not stop! You must use a condition like this:

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    mPowerTone.pause();
    mPowerTone.flush();                     
}
else {
    mPowerTone.stop();
}

保持良好的工作，谷歌。

Keep up the good work, Google.

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