android 监听SDCard安装和卸载的代码片段（测试通过）

	  
// 监听类
private final BroadcastReceiver sdcardListener = new BroadcastReceiver() {
		
		@Override
		public void onReceive(Context context, Intent intent) {
			
			String action = intent.getAction();
			Log.d("TAG", "sdcard action:::::" + action);
			if(Intent.ACTION_MEDIA_MOUNTED.equals(action)
					|| Intent.ACTION_MEDIA_SCANNER_STARTED.equals(action)
					|| Intent.ACTION_MEDIA_SCANNER_FINISHED.equals(action)
					){
				// SD卡成功挂载
				
			} else if(Intent.ACTION_MEDIA_REMOVED.equals(action)
					|| Intent.ACTION_MEDIA_UNMOUNTED.equals(action)
					|| Intent.ACTION_MEDIA_BAD_REMOVAL.equals(action)
					){
				// SD卡挂载失败
				
			}
					
		}
	};
	
        // 注册监听
	private void registerSDCardListener(){
		IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
		intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
		intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
		intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
		intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
		intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
		intentFilter.addDataScheme("file");
		registerReceiver(sdcardListener, intentFilter);
	}

使用完成后注销监听：

unregisterReceiver(sdcardListener);