获取手机QQ存储路径下的文件

package com.example.myfile;

import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.Manifest;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;

import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.chad.library.adapter.base.BaseQuickAdapter;

import org.json.JSONArray;
import org.json.JSONObject;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import pub.devrel.easypermissions.AfterPermissionGranted;
import pub.devrel.easypermissions.EasyPermissions;

public class MainActivity extends AppCompatActivity implements EasyPermissions.PermissionCallbacks {
private static final int REQUEST_CODE_QRCODE_PERMISSIONS = 1;

private FileAdapter adapter;
private List list=new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerview);
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
    linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(linearLayoutManager);
    adapter=new FileAdapter(R.layout.item,list);
    recyclerView.setAdapter(adapter);


    findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Log.d("wangwu", "onClick: ");

// Toast.makeText(MainActivity.this, "点击了", Toast.LENGTH_SHORT).show();
initData();
}
});
adapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, list.get(position).getFilePath(), Toast.LENGTH_SHORT).show();
}
});

}

private void initData() {
    // 获取文件

// String path=Environment.getExternalStorageDirectory().getAbsolutePath()+"/Android/data/com.tencent.mobileqq/Tencent/QQfile_recv/";
File externalFilesDir = this.getExternalFilesDir(null);
String path1=externalFilesDir.getAbsolutePath();
String[] split = path1.split("/");
String path2=split[0]+"/"+split[1]+"/"+split[2]+"/0";
String path=path2+"/Android/data/com.tencent.mobileqq/Tencent/QQfile_recv/";
// Toast.makeText(this, ""+path, Toast.LENGTH_SHORT).show();
JSONArray allFiles = getAllFiles(path, ".pdf");
// Log.d("wangwu", "initData: "+allFiles);

}
/**
 * 获取指定目录内所有文件路径
 * @param dirPath 需要查询的文件目录
 * @param _type 查询类型，比如mp3什么的
 */
public  JSONArray getAllFiles(String dirPath, String _type) {
    Log.d("wangwu", "getAllFiles: ");
    File f = new File(dirPath+"/");
    if (!f.exists()) {//判断路径是否存在
        Log.d("wangwu", "判断路径是否存在 ");
        return null;
    }

    File[] files = f.listFiles();

    if(files==null){//判断权限
        Log.d("wangwu", "判断权限 ");
        return null;
    }

    JSONArray fileList = new JSONArray();
    for (File _file : files) {//遍历目录
        if(_file.isFile() && _file.getName().endsWith(_type)){
            String _name=_file.getName();
            FileInfo fileInfo = new FileInfo();
            String filePath = _file.getAbsolutePath();//获取文件路径
            String fileName = _file.getName().substring(0,_name.length()-4);//获取文件名
            fileInfo.setFileName(fileName);
            fileInfo.setFilePath(filePath);
            list.add(fileInfo);
            adapter.notifyDataSetChanged();
            Log.d("wangwu","fileName:"+fileName);
            Log.d("wangwu","filePath:"+filePath);
            try {
                JSONObject _fInfo = new JSONObject();
                _fInfo.put("name", fileName);
                _fInfo.put("path", filePath);
                fileList.put(_fInfo);
            }catch (Exception e){
            }
        } else if(_file.isDirectory()){//查询子目录
            getAllFiles(_file.getAbsolutePath(), _type);
        } else{
        }
    }
    return fileList;
}



@Override
protected void onStart() {
    super.onStart();
    requestCodeQRCodePermissions();
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
}

@Override
public void onPermissionsGranted(int requestCode, List perms) {

}

@Override
public void onPermissionsDenied(int requestCode, List perms) {
    Toast.makeText(this, "权限不足，将影响部分功能的使用！", Toast.LENGTH_SHORT).show();
}

@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
@AfterPermissionGranted(REQUEST_CODE_QRCODE_PERMISSIONS)

// , Manifest.permission.READ_PHONE_STATE
private void requestCodeQRCodePermissions() {
String[] perms = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};
if (!EasyPermissions.hasPermissions(this, perms)) {
EasyPermissions.requestPermissions(this, "请前往设置打开相关权限！", REQUEST_CODE_QRCODE_PERMISSIONS, perms);
}
}
}