Android Configuration

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Open Android module in Android Studio

Open Android Studio.
Select Open an existing Android Studio Project.
Open the android directory within your app.
Wait until the project has been synced successfully. (This happens automatically once you open the project, but if it doesn’t, select Sync Project with Gradle Files from the File menu).
Now, click on Run button.

Change Application Name

You must want to change your application name. This is how you can do. Follow the below step.
Open /android/app/src/main/AndroidManifest.xml and specify your application name.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:name="io.flutter.app.FlutterApplication"
        android:label="YOUR_APPLICATION_NAME"
        android:icon="@mipmap/ic_launcher">
        <activity

Change Application Icon

See How to generate an application icon?
Browse your image and click on Download icon. After successfully generated, replace all icons in respective folders:

/mipmap-hdpi in /android/app/src/main/res/ folder
/mipmap-mdpi in /android/app/src/main/res/ folder
/mipmap-xhdpi in /android/app/src/main/res/ folder
/mipmap-xxhdpi in /android/app/src/main/res/ folder
/mipmap-xxxhdpi in /android/app/src/main/res/ folder

Important:

Application icon name must be ic_launcher

Change Application ID

Follow the below steps to change you Application ID.
Open /android/app/build.gradle

    defaultConfig {
        applicationId "YOUR_APPLICATION_ID"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

Android Configuration

Open Android module in Android Studio

Change Application Name

Change Application Icon

Important:

Change Application ID

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