Android SD卡状态和剩余空间

 1 public void getSDCardStateAndAvailableSize() {
 2         String state = Environment.getExternalStorageState();
 3         Log.d("xzy", "sd state is : " + state);
 4 
 5         if (Environment.MEDIA_CHECKING.equals(state)) {
 6             Log.i("xzy", "preparing");
 7         }
 8         if (!Environment.MEDIA_MOUNTED.equals(state)) {
 9             Log.i("xzy", "unavailable");
10             return;
11         }
12 
13         String direction = Environment.getExternalStorageDirectory().toString();
14         Log.i("xzy", "direction is : " + direction);
15 
16         try {
17             StatFs stat = new StatFs(direction);
18             Log.i("xzy",
19                     "available size is: " + stat.getAvailableBlocks() * (long) stat.getBlockSize() / 1024f /1024f + "MB");
20         } catch (Exception e) {
21             Log.i("xzy", "get sdcard useful size error");
22         }
23     }

 

 

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