我正在尝试测试制作主题的方法,但是我使用的方法并没有给我预期的结果.这是我的设置:
绘制/ dummy.xml
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/icon" />
值/ mythemes.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="MyOrange" parent="android:style/Theme">
<item name="@drawable/dummy">@style/imgOrange</item>
</style>
<style name="MyBlue" parent="android:style/Theme">
<item name="@drawable/dummy">@style/imgBlue</item>
</style>
<style name="imgOrange">
<item name="android:src">@drawable/orange</item>
</style>
<style name="imgBlue">
<item name="android:src">@drawable/blue</item>
</style>
</resources>
layuot / main.xml中
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:orientation="vertical">
<ImageView android:id="@+id/imageView1"
android:src="@drawable/dummy"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</ImageView>
</LinearLayout>
我没有收到任何错误,但也没有更改主题.
我尝试将样式也用作“虚拟”,但它具有相同的作用.
有什么想法/解释吗?
解决方法:
我不假装这个决定是正确的,但是它是有效的.
我通过以下技巧解决了这个问题:
我的属性:
<attr name="arrow_up_active" format="reference" />
<attr name="arrow_down_active" format="reference" />
我的主题:
<style name="AppThemeLight" parent="Theme.AppCompat.Light.NoActionBar">
....
<item name="arrow_down_block">@drawable/up_active</item>
<item name="arrow_down_active">@drawable/down_active</item>
</style>
<style name="AppThemeDark" parent="Theme.AppCompat.NoActionBar">
....
<item name="arrow_down_block">@drawable/up_active</item>
<item name="arrow_down_active">@drawable/down_active</item>
</style>
我的变量:
private TypedArray arrowUpActive, arrowDownActive;
宣言:
arrowUpActive = getActivity().getTheme().obtainStyledAttributes(new int[] { R.attr.arrow_up_active });
arrowDownActive = getActivity().getTheme().obtainStyledAttributes(new int[] { R.attr.arrow_down_active });
和用法:
imageButton.setImageDrawable(getResources().getDrawable(arrowUpActive.getResourceId(0,1)));
imageButton.setImageDrawable(getResources().getDrawable(arrowDownActive.getResourceId(0,1)));