Hide and Unhide The App Icon in Android Programmatically

Video Demo: 

In this demo you can hide the application icon and no one can see that homescreen or in all application screen. If you want to you launch your application then you can dial 1234567890 and its launch the application. Download source code from here

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.deepshikha.hideappicon">
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/logo"
        android:label="@string/app_name"

        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">

        </activity>


        <activity-alias
            android:name=".Launcher"
            android:targetActivity=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity-alias>

        <receiver android:name=".LaunchAppReceiver" >
            <intent-filter>
                <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
            </intent-filter>
        </receiver>
    </application>


</manifest>

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:orientation="horizontal"
    android:layout_height="match_parent"
    tools:context="com.deepshikha.hideappicon.MainActivity">

  <Button
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:id="@+id/btn_hide"
      android:text="Hide"/>

  <ImageView
      android:layout_width="match_parent"
      android:layout_height="250dp"
      android:src="@drawable/images"
      android:id="@+id/image"
      android:scaleType="fitXY"
      android:background="#efefef"
      android:layout_centerInParent="true"
      android:layout_marginTop="10dp"
      android:layout_below="@+id/btn_hide"

      />

  <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/tv_testing"
      android:text="@string/dummy"
      android:textColor="#000000"
      android:layout_margin="10dp"
      android:layout_below="@+id/image"/>


</RelativeLayout>

MainActivity.java:

package com.deepshikha.hideappicon;

import android.Manifest;
import android.app.ProgressDialog;
import android.content.ComponentName;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Handler;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    Button btn_hide;
    private static final ComponentName LAUNCHER_COMPONENT_NAME = new ComponentName(
            "com.deepshikha.hideappicon", "com.deepshikha.hideappicon.Launcher");

    public static int REQUEST_PERMISSIONS = 1;
    boolean boolean_permission;
    ProgressDialog progressDialog;

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

    private void init() {
        btn_hide = (Button) findViewById(R.id.btn_hide);
        progressDialog = new ProgressDialog(MainActivity.this);
        progressDialog.setTitle("Alert");
        progressDialog.setMessage("Please wait");


        if (isLauncherIconVisible()) {
            btn_hide.setText("Hide");
        } else {
            btn_hide.setText("Unhide");
        }


    }

    private void listener() {
        btn_hide.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_hide:

                progressDialog.show();
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        progressDialog.dismiss();
                        if (isLauncherIconVisible()) {
                            btn_hide.setText("Hide");
                        } else {
                            btn_hide.setText("Unhide");
                        }
                    }
                }, 10000);


                if (boolean_permission) {

                    if (isLauncherIconVisible()) {
                        fn_hideicon();
                    } else {
                        fn_unhide();
                    }
                } else {
                    Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();
                }
                break;

        }

    }

    private boolean isLauncherIconVisible() {
        int enabledSetting = getPackageManager().getComponentEnabledSetting(LAUNCHER_COMPONENT_NAME);
        return enabledSetting != PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
    }

    private void fn_hideicon() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Important!");
        builder.setMessage("To launch the app again, dial phone number 1234567890");
        builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                getPackageManager().setComponentEnabledSetting(LAUNCHER_COMPONENT_NAME,
                        PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                        PackageManager.DONT_KILL_APP);
            }
        });
        builder.setIcon(android.R.drawable.ic_dialog_alert);
        builder.show();
    }

    private void fn_unhide() {
        PackageManager p = getPackageManager();
        ComponentName componentName = new ComponentName(this, com.deepshikha.hideappicon.MainActivity.class);
        p.setComponentEnabledSetting(LAUNCHER_COMPONENT_NAME, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
    }

    private void fn_permission() {
        if ((ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.PROCESS_OUTGOING_CALLS) != PackageManager.PERMISSION_GRANTED) ||
                (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.PROCESS_OUTGOING_CALLS) != PackageManager.PERMISSION_GRANTED)) {

            if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.PROCESS_OUTGOING_CALLS))) {
            } else {
                ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.PROCESS_OUTGOING_CALLS},
                        REQUEST_PERMISSIONS);

            }

            if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.PROCESS_OUTGOING_CALLS))) {
            } else {
                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.PROCESS_OUTGOING_CALLS},
                        REQUEST_PERMISSIONS);

            }
        } else {
            boolean_permission = true;


        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_PERMISSIONS) {

            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                boolean_permission = true;


            } else {
                Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();

            }
        }
    }
}

LaunchAppReceiver.java:

package com.deepshikha.hideappicon;

import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;

/**
 * Created by deepshikha on 9/6/17.
 */

public class LaunchAppReceiver extends BroadcastReceiver {
    String LAUNCHER_NUMBER = "1234567890";
    private static final ComponentName LAUNCHER_COMPONENT_NAME = new ComponentName(
            "com.deepshikha.hideappicon", "com.deepshikha.hideappicon.Launcher");

    @Override
    public void onReceive(Context context, Intent intent) {
        String phoneNubmer = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
        if (LAUNCHER_NUMBER.equals(phoneNubmer)) {
            setResultData(null);

            if (isLauncherIconVisible(context)) {

            } else {
                Intent appIntent = new Intent(context, MainActivity.class);
                appIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(appIntent);
            }


        }

    }

    private boolean isLauncherIconVisible(Context context) {
        int enabledSetting = context.getPackageManager().getComponentEnabledSetting(LAUNCHER_COMPONENT_NAME);
        return enabledSetting != PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
    }

}