android常用的广播

1.当耳机插入手机时，android手机会发送广播，我们可以写一个广播接受者来进行相关设置

<pre name="code" class="java">	    public void onReceive(Context context, Intent intent) {  
	        // TODO Auto-generated method stub  
	          
	            if(intent.hasExtra("state")){  
	                if(intent.getIntExtra("state", 0)==0){  
	                    Toast.makeText(context, "耳机已拔出", Toast.LENGTH_LONG).show();  
	                }  
	                else if(intent.getIntExtra("state", 0)==1){  
	                    Toast.makeText(context, "耳机已插入", Toast.LENGTH_LONG).show();  
	                }  
	            }  
	    }  

2.屏幕亮暗的广播

public void onReceive(Context context, Intent intent) {
		String action = intent.getAction();
		if (action.equals(Intent.ACTION_SCREEN_ON)) {
			Log.i(TAG, "屏幕解锁广播...");
		} else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
			Log.i(TAG, "屏幕加锁广播...");
			}
		}

3.手机解锁的广播，类如指纹解锁

public void onReceive(Context context, Intent intent) {
		if(intent.getAction().equals("android.intent.action.USER_PRESENT")){
			ToastUtil.showToast(context, "手机解锁的广播");
		}
	}

4.声音的音量变化的广播

//注册系统音量改变的广播接受者
		context.registerReceiver(volumeReceiver, new IntentFilter("android.media.VOLUME_CHANGED_ACTION")) ;

public void onReceive(Context context, Intent intent) {
		AudioManager audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
		
		if(intent.getAction().equals("android.media.VOLUME_CHANGED_ACTION")){
			int currentVolumeC = audioManager.getStreamVolume(AudioManager.STREAM_VOICE_CALL) ;// 当前的听筒音量
			int currentVolumeM = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC) ;// 当前的媒体音量
			//做自己的处理
		}
	}

更多内容请参考：

http://blog.youkuaiyun.com/u013290075/article/details/51115648

http://blog.youkuaiyun.com/lizhenmingdirk/article/details/7469628