如何以编程暂停音乐播放器 [英] How to pause a music player programatically

问题描述

我已经使用 MUSIC_PLAYER 在我的应用程序通过启动这样的：

 意图敏=新的意向书（android.intent.action.MUSIC_PLAYER）;
startActivity（敏）;
 

和我想暂停这个播放器。我该怎么办呢？

 进口android.media.AudioManager;

进口android.media.MediaPlayer;

进口android.os.Bundle;

进口android.app.Activity;

进口android.content.Intent;

进口android.view.Menu;

公共类MainActivity延伸活动{

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;
        螺纹MTR =新的Thread（）{
            公共无效的run（）
            {
                尝试 {
                    意图敏=新的意向书（android.intent.action.MUSIC_PLAYER）;
                    startActivity（敏）;
                    睡眠（50000）;
                    //在这里，我想这50秒后暂停我的应用程序。
                }
                赶上（InterruptedException异常E）{
                    e.printStackTrace（）;
                }
                最后{
                    意图敏=新的意向书（nextscreen）;
                    startActivity（敏）;
                }
            }
        };
        mtr.start（）;
    }
}
 

解决方案

在三星设备，你可以控制音乐播放器与这些意图：

  ICS：
com.android.music.musicservicecommand.play
com.android.music.musicservicecommand.pause
com.android.music.musicservicecommand.next
...

JB：
com.sec.android.app.music.musicservicecommand.play
com.sec.android.app.music.musicservicecommand.pause
com.sec.android.app.music.musicservicecommand.next
...

context.sendBroadcast（新的意向书（com.sec.android.app.music.musicservicecommand.pause））;
 

另一种解决方案是requestAudioFocus在AudioManager（不要忘了与abandonAudioFocus释放）。例如：

  ...
（（AudioManager）getSystemService（Context.AUDIO_SERVICE））requestAudioFocus（监听器，AudioManager.STREAM_MUSIC，AudioManager.AUDIOFOCUS_GAIN_TRANSIENT）。
...

...
（（AudioManager）getSystemService（Context.AUDIO_SERVICE））abandonAudioFocus（听众）;
...
 

I have used MUSIC_PLAYER in my application by starting like this:

Intent myint = new Intent("android.intent.action.MUSIC_PLAYER");
startActivity(myint);

And I want to pause this player. How do I do that?

import android.media.AudioManager;

import android.media.MediaPlayer;

import android.os.Bundle;

import android.app.Activity;

import android.content.Intent;

import android.view.Menu;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Thread mtr = new Thread(){
            public void run()
            {
                try {
                    Intent myint = new Intent("android.intent.action.MUSIC_PLAYER");
                    startActivity(myint);
                    sleep(50000);
                    // Here I want to pause my application after those 50 seconds.
                }
                catch(InterruptedException e){
                    e.printStackTrace();
                }
                finally{
                    Intent myint = new Intent("nextscreen");
                    startActivity(myint);
                }
            }
        };
        mtr.start();
    }
}

解决方案

In Samsung devices, you can control the music player with these intents:

ICS:
"com.android.music.musicservicecommand.play"
"com.android.music.musicservicecommand.pause"
"com.android.music.musicservicecommand.next"
...

JB:
"com.sec.android.app.music.musicservicecommand.play"
"com.sec.android.app.music.musicservicecommand.pause"
"com.sec.android.app.music.musicservicecommand.next"
...

context.sendBroadcast(new Intent("com.sec.android.app.music.musicservicecommand.pause"));

Another solution is requestAudioFocus in AudioManager (do not forget to release it with abandonAudioFocus). For example:

...
((AudioManager)getSystemService(Context.AUDIO_SERVICE)).requestAudioFocus(listener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
...

...
((AudioManager)getSystemService(Context.AUDIO_SERVICE)).abandonAudioFocus(listener);
...

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