How to change the color theme of Android app?

Question

Ive followed the instructions on how to change color , but the program produces this error:

06-29 19: 20: 39.416 7041-7041 / com.example.lucerne.adapter_example_2 E / AndroidRuntime: FATAL EXCEPTION: main

    Process: com.example.lucerne.adapter_example_2, PID: 7041
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.lucerne.adapter_example_2/com.example.lucerne.adapter_example_2.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.

Currently, style.xml is as follows:

<!--<color name="white_opaque">#FFFFFFFF</color>-->
<!--<color name="pitch_black">#FF000000</color>-->

<!--<style name="AppTheme" parent="android:Theme.Light">-->
    <!--<item name="android:background">@color/white_opaque</item>-->
    <!--<item name="android:windowBackground">@color/white_opaque</item>-->
    <!--<item name="android:colorBackground">@color/white_opaque</item>-->

<!--</style>-->

 <!--Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

<!--<style name="AppTheme" parent="@android:style/Theme.Holo.Light">-->
    <!--<item name="android:actionBarStyle">@style/MyActionBarTheme</item>-->
<!--</style>-->
<!--<style name="MyActionBarTheme" parent="@android:style/Widget.Holo.Light.ActionBar">-->
    <!--<item name="android:background">#FF0000</item>-->
<!--</style>-->

What causes the error, and how can I change the colors to something else?

Answer 1

As the error says, you should extend Theme.AppCompat in your style.

A simple example:

<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
  </style>

 <style name="Theme.SemiTransparent" parent="AppTheme.NoActionBar">
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowBackground">@color/colorSemiTransparent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:backgroundDimEnabled">false</item>
  </style>

, AppTheme.NoActionBar, AppTheme. AppTheme.NoActionBar AppTheme NoActionBar .

, AppTheme , .