Android(安卓)插拔sd广播

项目中要做媒体扫描，需要检测sd插拔事件。写了个demo分析下。

 mReceiver = new BroadcastReceiver() {            @Override            public void onReceive(Context context, Intent intent) {                onReceiveMediaBroadcast(intent);            }        };

//onReceive方法：private void onReceiveMediaBroadcast(Intent intent) {        String action = intent.getAction();        if (action.equals(Intent.ACTION_MEDIA_MOUNTED)) {        Log.i(Intent.ACTION_MEDIA_MOUNTED);        } else if (action.equals(Intent.ACTION_MEDIA_UNMOUNTED)) {        Log.i(Intent.ACTION_MEDIA_UNMOUNTED);        } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) {        Log.i(Intent.ACTION_MEDIA_SCANNER_STARTED);        } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {        Log.i(Intent.ACTION_MEDIA_SCANNER_FINISHED);        } else if (action.equals(Intent.ACTION_MEDIA_BAD_REMOVAL)) {        Log.i(Intent.ACTION_MEDIA_BAD_REMOVAL);        }        else if (action.equals(Intent.ACTION_MEDIA_EJECT)) {        Log.i(Intent.ACTION_MEDIA_EJECT);        }        else if (action.equals(Intent.ACTION_MEDIA_REMOVED)) {        Log.i(Intent.ACTION_MEDIA_REMOVED);        }    }

//注册广播接收器：        IntentFilter intentFilter = new IntentFilter();        intentFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);        intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);        intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);        intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);        intentFilter.addAction(Intent.ACTION_MEDIA_EJECT);        intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);        intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);        intentFilter.addDataScheme("file");        registerReceiver(mReceiver, intentFilter);

log信息：
插卡：系统打出来的状态，{removed}->{unmounted}->{checking}->{mounted}
我的程序打印信息，android.intent.action.MEDIA_UNMOUNTED->android.intent.action.MEDIA_MOUNTED
->android.intent.action.MEDIA_SCANNER_STARTED->android.intent.action.MEDIA_SCANNER_FINIDHED
拔卡：系统打出来的状态，{mounted}->{umounted}->{removed}
我的程序打印信息，android.intent.action.MEDIA_EJECT->android.intent.action.MEDIA_UNMOUNTED
->android.intent.action.MEDIA_REMOVED

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