Android tutorial - Android Default Activity | How to set default activity for Android application - android app development - android studio - android development tutorial
What is android application?
- An Android app is a software application running on the Android platform.
- Because the Android platform is built for mobile devices, a typical Android app is designed for a smartphone or a tablet PC running on the Android OS.
- In Android, you can configure the starting activity (default activity) of your application via following “intent-filter” in “AndroidManifest.xml“.
- The following code snippet to configure an activity class “logoActivity” as the default activity.
File: AndroidManifest.xml
<activity
android:label="Logo"
android:name=".logoActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
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- For example, let said you have two activities class, and you want to set the “ListMobileActivity” activity as the starting activity of your application.
File: AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.wikitechy.android"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="List of Mobile OS"
android:name=".ListMobileActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:label="List of Fruits"
android:name=".ListFruitActivity" >
</activity>
</application>
</manifest>
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- On the other hand, If you want to set the “ListFruitActivity” activity as your starting activity, just cut and paste the “intent-filter” like following:
File: AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.wikitechy.android"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="List of Mobile OS"
android:name=".ListMobileActivity" >
</activity>
<activity
android:label="List of Fruits"
android:name=".ListFruitActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>