我想在res/values/styles.xml中仅指定一次两个复选框的大小及其四个形状可绘制对象
- res/drawable/cb1_checked.xml
- res/drawable/cb1_unchecked.xml
- res/drawable/cb2_checked.xml
- res/drawable/cb2_unchecked.xml。
这样,尺寸将在样式中出现一次,而不是在可绘制对象中出现四次。
下面的两种尝试都不起作用。你能提出一个解决方案吗?(如果您发现这两次尝试有什么问题,请务必提及。)
-------------------------------------------------- --------------尝试 1 ---------------------------------- ------------------------------
代替
res/drawable/cb1_checked.xml
<size android:width="24dp"
android:height="24dp" />
和
res/values/styles.xml
<item name="android:layout_width">24dp</item>
<item name="android:layout_height">24dp</item>
-------------------------------------------------- --------------尝试 2 ---------------------------------- ------------------------------
添加
res/values/styles.xml
<item name="android:background">cb_background</item>
并定义一个背景可绘制对象
res/drawable/cb_background.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#00FF00"/>
<size android:width="24dp"
android:height="24dp" />
</shape>
-------------------------------------------------- -------------- 已添加------------------------------------ -----------------------------------------
这是完整的 XML 文件集:
资源/布局/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/MyLL"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<CheckBox
android:id="@+id/cb1"
style="@style/CB_style"
android:button="@drawable/cb1_selector"
android:height="@dimen/my24sp" />
<CheckBox
android:id="@+id/cb2"
style="@style/CB_style"
android:button="@drawable/cb2_selector"
android:height="@dimen/my24sp" />
</LinearLayout>
res/values/styles.xml
<style name="AppBaseTheme" parent="android:Theme.Light">
</style>
<style name="AppTheme" parent="AppBaseTheme">
</style>
<style name="CB_style" parent="@android:style/TextAppearance.Medium">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_weight">1</item>
<item name="android:layout_gravity">center_horizontal</item>
<item name="android:gravity">center</item>
<item name="android:checked">false</item>
</style>
res/drawable/cb1_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
android:constantSize="true">
<item android:state_checked="true"
android:drawable="@drawable/cb1_checked" />
<item android:state_checked="false"
android:drawable="@drawable/cb1_unchecked" />
</selector>
res/drawable/cb1_checked.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#FF0000"/>
<size android:width="24dp"
android:height="24dp" />
</shape>
res/drawable/cb1_unchecked.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#880000"/>
<size android:width="24dp"
android:height="24dp" />
</shape>
(对于 cb2 选择器和选中/未选中的可绘制对象也是如此)