AndroidStudio study notes-07 hide the title bar and status bar

1. Add subtags in the styles.xml file of values, as follows:

<style name="NoTitle" parent="Theme.AppCompat.DayNight.NoActionBar">
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowFullscreen">true</item>
</style>

2. In the manifest file AndroidManifest.xml, add the following references

android:theme="@style/NoTitle"

3. The final effect is as follows: