How to Change App Icon of Android Programmatically in Android?
In this article, we are going to learn how to change the App Icon of an App on the Button Click. This feature can be used when we have an app for different types of users. Then as per the user type, we can change the App Icon Dynamically.
Step by Step Implementation
Step 1: Create a New Project
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To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Java as the programming language.
Step 2: Add this in AndroidManifest.xml File
XML
<?xml version="1.0" encoding="UTF-8"?> <manifest package="com.prepare.packagename" <application android:theme="@style/Theme.packagename" android:supportsRtl="true" android:roundIcon="@mipmap/ic_launcher_round" android:label="@string/app_name" android:icon="@mipmap/ic_launcher_old" android:allowBackup="true"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <activity-alias android:name=".MainActivityAlias" android:roundIcon="@drawable/ic_launcher_p_foreground" android:label="@string/app_name" android:icon="@mipmap/ic_launcher" android:enabled="false" android:targetActivity=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity-alias> </application></manifest> |
Step 3: Working with the activity_main.xml file
Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file.
XML
<?xml version="1.0" encoding="utf-8"?><LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:layout_gravity="center" android:gravity="center" tools:context=".MainActivity"> <TextView android:id="@+id/newicon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=" New Icon" android:textColor="@color/black" android:textSize="20sp" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> <TextView android:id="@+id/oldicon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=" Old Icon" android:textColor="@color/black" android:textSize="20sp" android:layout_marginTop="40dp" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> </LinearLayout> |
Step 4: Working with the MainActivity.java file
Go to the MainActivity.java file and refer to the following code. Below is the code for the MainActivity.java file. Comments are added inside the code to understand the code in more detail.
Java
import android.content.ComponentName;import android.content.pm.PackageManager;import android.graphics.Color;import android.os.Bundle;import android.text.SpannableString;import android.text.Spanned;import android.text.method.LinkMovementMethod;import android.text.style.BackgroundColorSpan;import android.text.style.ClickableSpan;import android.text.style.ForegroundColorSpan;import android.view.View;import android.widget.TextView;import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { TextView click,newicon; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); click=findViewById(R.id.oldicon); newicon=findViewById(R.id.newicon); click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { changeicon(); } }); newicon.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { newicon(); } }); } private void changeicon() { // enable old icon PackageManager manager=getPackageManager(); manager.setComponentEnabledSetting(new ComponentName(MainActivity.this,"com.prepare.makedirectory.MainActivity") ,PackageManager.COMPONENT_ENABLED_STATE_ENABLED,PackageManager.DONT_KILL_APP); // disable new icon manager.setComponentEnabledSetting(new ComponentName(MainActivity.this,"com.prepare.makedirectory.MainActivityAlias") ,PackageManager.COMPONENT_ENABLED_STATE_DISABLED,PackageManager.DONT_KILL_APP); Toast.makeText(MainActivity.this,"Enable Old Icon" ,Toast.LENGTH_LONG).show(); } private void newicon() { // enable old icon PackageManager manager=getPackageManager(); manager.setComponentEnabledSetting(new ComponentName(MainActivity.this,"com.prepare.makedirectory.MainActivity") ,PackageManager.COMPONENT_ENABLED_STATE_DISABLED,PackageManager.DONT_KILL_APP); // enable new icon manager.setComponentEnabledSetting(new ComponentName(MainActivity.this,"com.prepare.makedirectory.MainActivityAlias") ,PackageManager.COMPONENT_ENABLED_STATE_ENABLED,PackageManager.DONT_KILL_APP); Toast.makeText(MainActivity.this,"Enable New Icon" ,Toast.LENGTH_LONG).show(); }} |
Output:
