Question

我正在尝试按下状态按钮并选择，我已经对标签做了同样的工作，但是我不知道为什么这里不起作用。我这样做了：

button_sel.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android" 
       android:shape="rectangle">
    <gradient android:startColor="@color/azulado" 
              android:endColor="@color/azulBrillante"
              android:angle="270" />
     <corners android:radius="@dimen/corner_radius" />
     <stroke android:width="2px" 
             android:color="@color/blanco" />
 </shape>

button_unsel.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android" 
       android:shape="rectangle">
    <gradient android:startColor="@color/botonesD" 
              android:endColor="@color/botones"
              android:angle="270" />
    <corners android:radius="@dimen/corner_radius" />
    <stroke android:width="2px" 
            android:color="@color/blanco" />
</shape>

选择器，button.xml：

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/button_sel"  
          android:state_selected="true" 
          android:state_pressed="true"/>
<item android:drawable="@drawable/button_unsel" 
      android:state_selected="false" 
      android:state_pressed="false"/>
</selector>

在这里我将drawable称为背景：

 <style name="button">
    <item name="android:background">@drawable/button</item>
    <item name="android:textSize">@dimen/text_size</item>
    <item name="android:padding">@dimen/padding_button</item>
    <item name="android:textColor">@color/blanco</item>
 </style>

谢谢!!!!

Answer 1

仅在按下并选择按钮时才使用选择器中的第一项。如果您想在按下或选择按钮时使用button_sel，则应该执行以下操作：

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/button_sel" android:state_selected="true" />
    <item android:drawable="@drawable/button_sel" android:state_pressed="true" />
    <item android:drawable="@drawable/button_unsel" />
</selector>

项目从上到下进行评估，最后一项是默认值。虽然我不确定state_selected是否对按钮有意义。

Answer 2

可以使用形状内联项目。

   <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:state_pressed="true" >
            <shape....>
        </item>
        <item android:state_selected="true" >
            <shape....>
        </item>
        <item android:state_pressed="true" android:state_selected="true" >
            <shape...>
        </item>
   </selector>

样本：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" >
        <shape
            android:shape="rectangle">
            <gradient android:startColor="@color/md_amber_300"
                android:endColor="@color/md_amber_50"
                android:angle="270" />
            <corners android:radius="@dimen/fab_margin" />
            <stroke android:width="2px"
                android:color="@color/primaryColorDark_orange" />
        </shape>
    </item>
    <item android:state_pressed="true" >
        <shape
            android:shape="rectangle">
            <gradient android:startColor="@color/md_amber_300"
                android:endColor="@color/md_amber_50"
                android:angle="270" />
            <corners android:radius="@dimen/fab_margin" />
            <stroke android:width="2px"
                android:color="@color/primaryColorDark_orange" />
        </shape>
    </item>
    <item android:state_pressed="true" android:state_selected="true" >
        <shape
            android:shape="rectangle">
            <gradient android:startColor="@color/md_teal_500"
                android:endColor="@color/md_blue_400"
                android:angle="270" />
            <corners android:radius="@dimen/fab_margin" />
            <stroke android:width="2px"
                android:color="@color/md_amber_A400" />
        </shape>
    </item>
</selector>

Android按钮选择并按下drawable

2 个答案: