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：

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 storageVolumes = new ArrayList();        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。

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