本文实例讲述了Android判断SD卡是否已经挂载的方法。分享给大家供大家参考。具体如下：
提供一个监听方法BroadcastReceiver 设置IntentFilter为：
Intent.ACTION_MEDIA_MOUNTED
Intent.ACTION_MEDIA_EJECT
Intent.ACTION_MEDIA_REMOVED
然后再public void onReceive(Context context, Intent intent) 中实现你的启动逻辑startActivity
private final BroadcastReceiver broadcastRec = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("android.intent.action.MEDIA_MOUNTED"))
//SD卡已经成功挂载
{
imagepath =
android.os.Environment.getExternalStorageDirectory();//你的SD卡路径
}else
if(intent.getAction().equals("android.intent.action.MEDIA_REMOVED")
//各种未挂载状态
||intent.getAction().equals("android.intent.action.ACTION_MEDIA_UNMOUNTED")
||intent.getAction().equals("android.intent.action.ACTION_MEDIA_BAD_REMOVAL"))
{
imagepath = android.os.Environment.getDataDirectory();//你的本地路径
}
}
};
//在IntentFilter中选择你要监听的行为
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
//intentFilter.addAction(Intent.ACTION_MEDIA_SHARED);
intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
//intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
//intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter.addDataScheme("file");
registerReceiver(broadcastRec, intentFilter);//注册监听函数
unregisterReceiver(broadcastRec);//使用完注销广播监听函数
希望本文所述对大家的Android程序设计有所帮助。
