Question

我的应用中有一个布局，我定义为：

<LinearLayout
    android:id="@+id/amountLayout"
    android:layout_width="match_parent"
    android:layout_height="fill_parent"
    android:layout_weight="0.25"
    android:background="@drawable/gradient_effect_green"
    android:orientation="vertical"
    android:padding="10dp"
    android:layout_marginLeft="3dp"
    android:layout_marginRight="3dp"
    android:layout_marginBottom="3dp" >

和gradient_effect_green是：

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<
<solid android:color="@color/green_light" />
<corners
    android:bottomLeftRadius="20dp"
    android:bottomRightRadius="20dp"
    android:topLeftRadius="20dp"
    android:topRightRadius="20dp" /></shape>

一切都像魅力一样。现在我想在这个布局上设置监听器，我想为这个布局定义激活状态，但我不知道如何。通过激活状态，我的意思是例如当用户触摸此布局时更改背景颜色。像这样：

android:state_pressed="true" android:drawable="@color/deep_light"

Answer 1

只需按照步骤

1）gradient_effect_green.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<
<solid android:color="@color/green_light" />
<corners
    android:bottomLeftRadius="20dp"
    android:bottomRightRadius="20dp"
    android:topLeftRadius="20dp"
    android:topRightRadius="20dp" /></shape>

2）gradient_effect_green_selected.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >
    <
    <solid android:color="@color/deep_light" />
    <corners
        android:bottomLeftRadius="20dp"
        android:bottomRightRadius="20dp"
        android:topLeftRadius="20dp"
        android:topRightRadius="20dp" /></shape>

3）gradient_effect_selector.xml

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

        <item android:drawable="@drawable/gradient_effect_green_selected" android:state_pressed="true"></item>
        <item android:drawable="@drawable/gradient_effect_green_selected" android:state_focused="true"></item>
        <item android:drawable="@drawable/gradient_effect_green" android:state_enabled="true" android:state_focused="false" android:state_pressed="false"></item>
        <item android:drawable="@drawable/gradient_effect_green_selected" android:state_enabled="false"></item>

</selector>

4）your_layout.xml

<LinearLayout
    android:id="@+id/amountLayout"
    android:layout_width="match_parent"
    android:layout_height="fill_parent"
    android:layout_weight="0.25"
    android:background="@drawable/gradient_effect_selector" // CHANGE HERE
    android:orientation="vertical"
    android:padding="10dp"
    android:layout_marginLeft="3dp"
    android:layout_marginRight="3dp"
    android:layout_marginBottom="3dp" >

为形状android设置激活状态

1 个答案: