Question

Following this: http://developer.android.com/training/basics/firstapp/starting-activity.html I am confused when editing the Android Manifest.xml file. It says that the file should contain this:

<application ... >
    <activity android:name="com.example.myapp.DisplayMessageActivity" />
     ...
    </application>

My android manifest.xml looks like this:

    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.nick.myfirstapp"
        android:versionCode="1"
        android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="4"
        android:targetSdkVersion="15" />

    <application android:label="@string/app_name">
       <activity android:name="com.nick.myfirstapp.DisplayMessageActivity" />
        ...
    </application>



</manifest>

and when I run the app everything goes fine except it says : “No Launcher activity found!
The launch will only sync the application package on the device!” Is this something missing from the android manifest.xml file?

Answer 1

declare Your Activity in AndroidManifest.xml as for Showing In Launcher as:

<application android:label="@string/app_name">
       <activity android:name="com.nick.myfirstapp.DisplayMessageActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

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

see for more info how we set an activity which so in Launcher :

http://developer.android.com/reference/android/content/Intent.html

http://developer.android.com/reference/android/app/Activity.html