移动测试设备文件处理

package com.example.myapplication;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import android.net.Uri;
import android.nfc.Tag;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import static com.example.myapplication.getallfilepath.huoqufilefangfa;

public class MainActivity extends AppCompatActivity {

    private Uri data;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String  tag="zhang11111";
        final TextView zhang = (TextView) findViewById(R.id.textView);
        final TextView zhang2 = (TextView) findViewById(R.id.textView2);
        zhang.setText(" "+this.getApplicationContext().getFilesDir()+"      "+ Environment.getExternalStorageDirectory().getAbsolutePath());

        String testmkdir = "/storage/emulated/0/zhang5";
        File testfile = new File(testmkdir);
        testfile.mkdirs();

        ArrayList<String>array1=new ArrayList<>();


        AlertDialog.Builder build = new AlertDialog.Builder(this);
        BufferedReader br= null;
        String kongzuoyihang;
        String line;
        String zhangshuzu[];
        String no1line[]=null;
        int i=0;
        int j=0;
        ArrayList<String> array=new ArrayList<>();
        File muluzhang =new File("/storage/emulated/0/zhang1/200106.txt");


        File srcfile = new File("/storage/emulated/0/zhang1");
        File[] zhangfilearraylist = srcfile.listFiles();
        if (zhangfilearraylist != null) {
            for (File file : zhangfilearraylist)
                {    File file1 = new File(file.getAbsolutePath());
                    zhangfilearraylist[j]=file1;
                    for(int k=0;k<zhangfilearraylist.length;){
                    zhang2.setText(" "+zhangfilearraylist[k]);
                    muluzhang=zhangfilearraylist[k];
                    k++;

                    }
                    j++;//帮助识别目录下的文件
                    try {
                        br = new BufferedReader(new FileReader(muluzhang));
                        kongzuoyihang=br.readLine();//越过文本第一行
                        no1line=kongzuoyihang.split(",");//把每列字段的名称传给数组
                        while ((line=br.readLine())!=null){
                            //array.add(line);
                            zhangshuzu =line.split(",");
                            if(zhangshuzu[48].equals("7")){array.add(muluzhang+"(第"+i+"行)"+"同频优先级7:"+zhangshuzu[5]+" "+zhangshuzu[6]+" "+zhangshuzu[7]);}  //aw:cellReselectionPriority
                            if(! zhangshuzu[117].equals("7")){array.add("(第"+i+"行)"+"异频优先级异非7:"+zhangshuzu[5]+" "+zhangshuzu[6]+" "+zhangshuzu[7]);} //dn cellReselectionPriority

                            //array.add(zhangshuzu[2]+"(第"+i+"行)"+"小区:"+zhangshuzu[0]+")");
                            i++;
                        }
                        br.close();
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
               }
        }
        //array1.add("basic,接着是FORTRAN,pascal,coblo");

        zhang.setText(" "+this.getApplicationContext().getFilesDir()+"      "+ Environment.getExternalStorageDirectory().getAbsolutePath()+"\n"+zhangfilearraylist[0]);

        zhang2.setText("集合长度:"+array.size()+"内容："+array);
  

    }
}