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);