Android Fullscreen Activity

July 21, 2018
No status bar

Edit AndroidManifest.xml

<manifest ...>
    <application ...>
        <activity
            android:name=".ImageViewActivity"
            android:label="@string/title_activity_image_view"
            android:theme="@style/AppTheme.Fullscreen">
        </activity>
    </application>
</manifest>

Edit res/values/styles.xml.

<resources>
    <style name="AppTheme.Fullscreen">
        <item name="android:windowFullscreen">true</item>
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>
</resources>

NOTE: assuming you are using AppCompatActivity with CoordinatorLayout + AppBarLayout

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