In this video it shows the steps to uninstall an Android App programmatically from your Android App using the intent.

In this demo it refers to the below webpage for getting the list of the package names of Apps installed on your device – https://programmerworld.co/android/how-to-get-the-list-of-all-the-apps-installed-in-your-android-phone-android-12-api-level-31/

I hope you like this video. For any questions, suggestions or appreciation please contact us at: https://programmerworld.co/contact/ or email at: programmerworld1990@gmail.com

Complete source code and other details:

package com.programmerworld.uninstallandroidapp;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

import java.util.List;

public class MainActivity extends AppCompatActivity {
    private EditText editText;
    private TextView textView;

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

        textView = findViewById(R.id.textView);
        editText = findViewById(R.id.editText);
    }

    public void buttonUninstall(View view){
        String stringAppName = editText.getText().toString();
        List<ApplicationInfo> applicationInfoList = getPackageManager().getInstalledApplications(PackageManager.GET_META_DATA);

        String stringPackageName = null;
        for (ApplicationInfo applicationInfo:applicationInfoList){
            if (applicationInfo.packageName.contains(stringAppName.toLowerCase())){
                stringPackageName = applicationInfo.packageName;
            }
        }
        if (stringPackageName == null){
            textView.setText("Deletion unsuccessful");
            return;
        }
        Intent intent = new Intent(Intent.ACTION_DELETE);
        intent.setData(Uri.parse("package:"+ stringPackageName));
        startActivity(intent);

        textView.setText(stringPackageName + " - Deleted Successfully");
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES"/>
    <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
        tools:ignore="QueryAllPackagesPermission" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.UninstallAndroidApp"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="112dp"
        android:layout_marginTop="72dp"
        android:onClick="buttonUninstall"
        android:text="Uninstall the App"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/editText" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="244dp"
        android:layout_height="71dp"
        android:layout_marginStart="70dp"
        android:layout_marginTop="40dp"
        android:ems="10"
        android:hint="Enter Package/ App Name ..."
        android:inputType="text"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Screenshots: