android 4.0 取内外置SD卡新特性

private StorageManager mStorageManager = null;
protected String mSDCardPath = null;

protected boolean mSDCardMounted = true;

protected boolean mSDCard2Mounted = false;

protected String mSDCardPath = null;

protected String mSDCard2Path = null;



mStorageManager = (StorageManager)getSystemService(Context.STORAGE_SERVICE);

String[] storagePathList = mStorageManager.getVolumePaths();

if (storagePathList != null) {

Log.d(TAG, "StorgaeList size: " + storagePathList.length);

if (storagePathList.length >= 2) {

mSDCardPath = storagePathList[0];

mSDCard2Path = storagePathList[1];

} else if (storagePathList.length == 1){

mSDCardPath = storagePathList[0];

}

}



Log.d(TAG, "SDCard path: " + mSDCardPath); //取出来的/mnt/sdcard

Log.d(TAG, "SDCard2 path: " + mSDCard2Path);//取出来的应该是/mnt/sdcard

mSDCardMounted = checkSDCardMount(mSDCardPath);

mSDCard2Mounted = checkSDCardMount(mSDCard2Path);

Log.d(TAG, "SDCard state in onCreate: " + mSDCardMounted);

Log.d(TAG, "SDCard2 state in onCreate: " + mSDCard2Mounted);



//判断sdcard是否挂载上，返回值为true证明挂载上了，否则不存在

protected boolean checkSDCardMount(String mountPoint) {

if(mountPoint == null){

return false;

}

String state = null;

state = mStorageManager.getVolumeState(mountPoint);

return Environment.MEDIA_MOUNTED.equals(state);

}

所说的4.0新特性是指针对android2.3来说的