Question

我有一个Button带有一个定义状态和背景的背景资源

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@color/white" android:state_pressed="true"  />
    <item android:drawable="@color/gray" android:state_pressed="false"  />

    <item android:drawable="@color/white" android:state_selected="true"  />
    <item android:drawable="@color/gray" android:state_selected="false"  />

</selector>

我也试过

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@color/white" android:state_pressed="true" android:state_selected="true" />
    <item android:drawable="@color/gray" android:state_pressed="false" android:state_selected="false"  />

</selector>

按下它确实会改变颜色，但是当我应用btn.setSelected(true);时没有任何反应

任何想法？

Answer 1

点击按钮，点击btn.performClick();。这可能有效：

void pressButton(Button btn, boolean pressed) {
    if (pressed != btn.isPressed()) {
        btn.performClick();
    }
}

Answer 2

好的，我明白了，

对于将要遇到这种情况的未来人来说，这已经解决了它

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@color/white" android:state_pressed="true"  />
    <item android:drawable="@color/white" android:state_selected="true"  />
    <item android:drawable="@color/tab_gray" />

</selector>

Android按钮背景状态具有意外行为

2 个答案: