Android:默认手机存储路径为TF卡

处理的方法是当手机中存在TF卡时接收系统的广播，然后进行后续功能实现的操作。步骤如下：

一：在AndroidManifest.xml中添加如下：

<!--M:lyj if you have a TF card In the mobile phone , storage priority choose it -->
<receiver android:name=".zf.ZfDefaultSDReceiver">
<intent-filter>
<action android:name="android.intent.action.MEDIA_MOUNTED"/>
<data android:scheme="file"/>
</intent-filter>
</receiver>

二：添加.java文件，实现存储TF卡的功能

package com.android.settings.zf;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.os.UserHandle;
import android.os.storage.StorageManager;
import android.util.Log;

import java.util.ArrayList;
import java.util.List;
import android.os.storage.StorageVolume;
import com.mediatek.storage.StorageManagerEx;

public class ZfDefaultSDReceiver extends BroadcastReceiver {

private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 0x01:
setDefault();
break;
default:
break;
}
}
};
private StorageManager mStorageManager;

@Override
public void onReceive(Context context, Intent intent) {
mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
mHandler.sendEmptyMessage(0x01);
}
private void setDefault() {
StorageVolume[] availableVolumes = getDefaultWriteDiskList();
for (StorageVolume volume : availableVolumes) {
String path = volume.getPath();
if(FeatureOption.MTK_2SDCARD_SWAP) {//支持APK应用可以移动到SD卡
if(path != null && !"/storage/sdcard1".equals(path)) {

StorageManagerEx.setDefaultPath(path);
break;
}
} else {
if(path != null && !"/storage/emulated/0".equals(path)) {

StorageManagerEx.setDefaultPath(path);
break;
}
}
}
}
private StorageVolume[] getDefaultWriteDiskList() {
List<StorageVolume> storageVolumes = new ArrayList<StorageVolume>();
StorageVolume[] volumes = mStorageManager.getVolumeList();
for (StorageVolume volume : volumes) {
if (Environment.MEDIA_MOUNTED.equals(mStorageManager.getVolumeState(volume.getPath()))) {
storageVolumes.add(volume);
}
}
return storageVolumes.toArray(new StorageVolume[storageVolumes.size()]);
}
}

备注：存储,默认为手机存储,格式化手机存储后会默认到SD卡的问题

这个是正常现象,格式化的真正流程是:unmount-》格式化-》mount,因为在格式化手机存储的时候,首先要进行的动

作是unmount 手机存储,这样手机存储这块就不在了,所有手机会自动跳转到默认存储为SD卡上。之后格式化手机存储

后,又会mount 手机存储,手机能看到手机存储这块空间,但是默认存储空间不会自动跳转,需要手动切换。