Android How to - Turn Activity to Dialog








By default, an activity occupies the entire screen.

You can apply a dialog theme to an activity so that it is displayed as a floating dialog.

Example

To apply a dialog theme to an activity, simply modify the <Activity> element in the AndroidManifest.xml file by adding the android:theme attribute: 

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.java2s.app" >

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.java2s.app.MainActivity"
            android:label="@string/app_name"
            android:theme="@android:style/Theme.Dialog">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>
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