[移动开发]读取手机中的所有应用，展示成列表

老师的代码

ApplicationActivity.java

package com.example.testapplication;

import android.content.ComponentName;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import java.util.List;

public class ApplicationActivity extends AppCompatActivity {
    ListView listView;
    List<ResolveInfo> infoList;
    listViewAdapter listViewAdapter;
    @Override
    protected void

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