CODEWITHSUNDEEP
androidandroid-source
faizal
faizal

Reputation: 3565

why theme.appcompat giving white background

I am using android:theme=@style/AppTheme for the application element in the manifest. The style.xml file defines this style as 

<style name="AppTheme" parent="@style/Theme.AppCompat">

So I expect the background of the activities and menu options to be dark by default, but it is white. I have not defined any background attributes in my layouts. What is the problem?

Here is my analysis of the Android source :

  1. There is no background color defined in @style/Theme.AppCompat or it's parent @style/Theme.Base.AppCompat according to support themes.xml.

  2. So i look at their parent @android:style/Theme at base themes.xml . I see the below element :

    <item name="colorBackground">@android:color/background_dark</item>

  3. So i find out that the exact color of background_dark is #ff000000 according to colors.xml

Why is Android not using this colour for my activities?

Upvotes: 0

Views: 677

Answers (2)

Anton Lashkov
Anton Lashkov

Reputation: 280

I have same problem when I change theme in onCreate method.

@Override
protected void onCreate(Bundle savedInstanceState) {        
    super.onCreate(savedInstanceState);
    updateTheme();
    setContentView(R.layout.activity_blablabla);
}

I fix it by change order of updateTheme and super.onCreate

@Override
protected void onCreate(Bundle savedInstanceState) {
    updateTheme();        
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_blablabla);
});

Upvotes: 0

faizal
faizal

Reputation: 3565

The problem was the the styles.xml in values-v11 and values-v14 were using Theme.AppCompat.Light.

Since my phone has API 19, it picks up these themes instead of from the values folder, which had the styles.xml with Theme.AppCompat.

Upvotes: 1

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