如何为所有活动设置背景? [英] How to set background for all activities?

问题描述

如何为adnroid应用程序中的所有活动设置背景并保持其长宽比?

How to set background for all activities in adnroid application and keep it's aspect ratio?

我正在使用android:windowBackground样式，但是我不知道如何保持背景图像的宽高比.

I am using android:windowBackground in style, but I don't know, how to keep aspect ratio for my background image.

是否只有办法为所有活动手动添加带有背景的ImageView?

Is there only way to add ImageView with background for all activities manually?

推荐答案

您也许可以在styles.xml

<style name="AppTheme.FullBackground" parent="AppTheme">
    <item name="android:background">#757575</item>
</style>

(其中AppTheme可能是您已经定义的主题，而我只是在其中使用了灰色，但是它可以是可绘制的)

(Where AppTheme might be a theme you already defined, and I just used a grey color there, but it can be a drawable)

然后将其添加到您的清单

Then add to your Manifest

<activity 
    android:name=".FooActivity"
    android:theme="@style/AppTheme.FullBackground">
</activity>

由于无论如何都必须向清单中添加活动，所以这是检查所有活动是否都具有背景的好方法.当然，您仍然可以扩展BaseActivity，仅让BaseActivity类维护主题设置.

Since you have to add activities to the Manifest anyway, this is a good way to check if all the activities have the background. You, of course, could still extend the BaseActivity and only have the BaseActivity class maintain the theme setting.

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