Question

所以我在运行时动态创建单选按钮，但我想更改按钮的背景。我在drawables文件夹中创建了一个选择器xml文件，如下所示：

<item android:drawable="@drawable/btn_radio_on_holo_light" android:state_checked="true" android:state_enabled="true" android:state_window_focused="false"/>
<item android:drawable="@drawable/btn_radio_off_holo_light" android:state_checked="false" android:state_enabled="true" android:state_window_focused="false"/>
<item android:drawable="@drawable/btn_radio_on_pressed_holo_light" android:state_checked="true" android:state_enabled="true" android:state_pressed="true"/>
<item android:drawable="@drawable/btn_radio_off_pressed_holo_light" android:state_checked="false" android:state_enabled="true" android:state_pressed="true"/>
<item android:drawable="@drawable/btn_radio_on_focused_holo_light" android:state_checked="true" android:state_enabled="true" android:state_focused="true"/>
<item android:drawable="@drawable/btn_radio_off_focused_holo_light" android:state_checked="false" android:state_enabled="true" android:state_focused="true"/>
<item android:drawable="@drawable/btn_radio_off_holo_light" android:state_checked="false" android:state_enabled="true"/>
<item android:drawable="@drawable/btn_radio_on_holo_light" android:state_checked="true" android:state_enabled="true"/>
<!-- Disabled states -->
<item android:drawable="@drawable/btn_radio_on_disabled_holo_light" android:state_checked="true" android:state_window_focused="false"/>
<item android:drawable="@drawable/btn_radio_off_disabled_holo_light" android:state_checked="false" android:state_window_focused="false"/>
<item android:drawable="@drawable/btn_radio_on_disabled_focused_holo_light" android:state_checked="true" android:state_focused="true"/>
<item android:drawable="@drawable/btn_radio_off_disabled_focused_holo_light" android:state_checked="false" android:state_focused="true"/>
<item android:drawable="@drawable/btn_radio_off_disabled_holo_light" android:state_checked="false"/>
<item android:drawable="@drawable/btn_radio_on_disabled_holo_light" android:state_checked="true"/>

有没有人知道使用此drawable在运行时更新单选按钮的java代码？谢谢！

Answer 1

试试这个例子：

    StateListDrawable mState1 = new StateListDrawable();
mState1.addState(new int[] { android.R.attr.state_pressed },
    getResources().getDrawable(R.drawable.button3_pressed));
mState1.addState(new int[] { android.R.attr.state_focused },
    getResources().getDrawable(R.drawable.button3_focused));
mState1.addState(new int[] {},
    getResources().getDrawable(R.drawable.button3_up));
myButton.setBackgroundDrawable(mState1);

Answer 2

以下是可以帮助您的链接

http://vimaltuts.com/android-tutorial-for-beginners/android-custom-radio-button

http://blog.devminded.com/posts/custom-android-radiobutton

http://custom-android-dn.blogspot.in/2012/12/how-to-use-and-custom-radio-button-in_23.html

更改单选按钮颜色

2 个答案: