本文實(shí)例講述了Android判斷SD卡是否已經(jīng)掛載的方法。分享給大家供大家參考。具體如下：
提供一個(gè)監(jiān)聽(tīng)方法BroadcastReceiver 設(shè)置IntentFilter為：
Intent.ACTION_MEDIA_MOUNTED
Intent.ACTION_MEDIA_EJECT
Intent.ACTION_MEDIA_REMOVED
然后再public void onReceive(Context context, Intent intent) 中實(shí)現(xiàn)你的啟動(dòng)邏輯startActivity
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
private final BroadcastReceiver broadcastRec = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if(intent.getAction().equals("android.intent.action.MEDIA_MOUNTED")) //SD卡已經(jīng)成功掛載 { imagepath = android.os.Environment.getExternalStorageDirectory();//你的SD卡路徑 }else if(intent.getAction().equals("android.intent.action.MEDIA_REMOVED") //各種未掛載狀態(tài) ||intent.getAction().equals("android.intent.action.ACTION_MEDIA_UNMOUNTED") ||intent.getAction().equals("android.intent.action.ACTION_MEDIA_BAD_REMOVAL")) { imagepath = android.os.Environment.getDataDirectory();//你的本地路徑 } } }; //在IntentFilter中選擇你要監(jiān)聽(tīng)的行為 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);//注冊(cè)監(jiān)聽(tīng)函數(shù) unregisterReceiver(broadcastRec);//使用完注銷廣播監(jiān)聽(tīng)函數(shù) |
希望本文所述對(duì)大家的Android程序設(shè)計(jì)有所幫助。
