android格式化外置u盘,Android5.x+ 格式化外部存储(u盘, sdcard)的方法

首先保证你的应用能够获取system权限：android:sharedUserId="android.uid.system"；

然后申请权限：

调用以下代码完成格式化：

public void diskFormat() {

ComponentName formatter = new ComponentName("android", "com.android.internal.os.storage.ExternalStorageFormatter");

Intent intent = new Intent("com.android.internal.os.storage.FORMAT_ONLY"); // ExternalStorageFormatter.FORMAT_ONLY

intent.setComponent(formatter);

Parcelable sv = getStoragePath(mContext);

intent.putExtra("storage_volume", sv); // StorageVolume.EXTRA_STORAGE_VOLUME

mContext.startService(intent);

}

// 获取 StorageVolume 对象

private Parcelable getStoragePath(Context mContext) {

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

Class> storageVolumeClazz = null;

try {

storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");

Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");

Method getPath = storageVolumeClazz.getMethod("getPath");

Method isRemovable = storageVolumeClazz.getMethod("isRemovable");

Object result = getVolumeList.invoke(mStorageManager);

final int length = Array.getLength(result);

for (int i = 0; i < length; i++) {

Object storageVolumeElement = Array.get(result, i);

String path = (String) getPath.invoke(storageVolumeElement);

boolean removable = (Boolean) isRemovable.invoke(storageVolumeElement);

if (removable && path.equals(mPreferUsbPath)) {

return (Parcelable) storageVolumeElement;

}

}

} catch (Exception e) {

e.printStackTrace();

}

return null;

}

mPreferUsbPath是你需要格式化的外部存储路径，按实际替换即可。

一般MountService会默认将外部存储格式化为 EXT3 文件系统格式，当然根据定制ROM配置文件的不同也可能为其他格式。