Android-监听SD卡状态(BroadcastReceiver)

注册广播接收者：

 <receiver android:name=".SDStatusReceiver">

     <intent-filter >

         <action android:name="android.intent.action.MEDIA_MOUNTED"/>

         <action android:name="android.intent.action.MEDIA_REMOVED"/>

         <action android:name="android.intent.action.MEDIA_UNMOUNTED"/>

         <data android:scheme="file"/>

     </intent-filter>

</receiver>

SDStatusReceiver中获取广播

public class SDStatusReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
//判断收到的到底是什么广播
String action = intent.getAction();
if("android.intent.action.MEDIA_MOUNTED".equals(action)){
Toast.makeText(context, "SD卡可用", 0).show();
}
else if("android.intent.action.MEDIA_REMOVED".equals(action)){
Toast.makeText(context, "SD卡拔出", 0).show();
}
else if("android.intent.action.MEDIA_UNMOUNTED".equals(action)){
Toast.makeText(context, "SD卡不可用", 0).show();
}
}
}