如何使图形的孩子的TextView白当STATE_ pressed =＆QUOT;真＆QUOT; [英] How to make shape's child TextView white when state_pressed="true"

问题描述

这形状是的LinearLayout的底色，我怎么能做出的LinearLayout内的任何TextViews状态$ P $过程中更改它们的文本颜色为白色pssed =家长选择的是真的吗？另见我的previous问题多看看code的：形状不显示

 ＆LT;形状
            的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android＆GT;
            [固体
                机器人：颜色=＃FFFFFF/＆GT;
            ＆LT;中风
                机器人：宽=1DP
                机器人：颜色=＃AA000000/＆GT;
            ＆LT;角落
                机器人：topLeftRadius =10dp
                机器人：topRightRadius =10dp/＆GT;
            ＆LT;梯度
                机器人：startColor =＃6633cc
                机器人：ENDCOLOR =＃00CCFF
                机器人：角=270/＆GT;
        ＆LT; /形状＆GT;
 

解决方案

pressed状态传播到布局的所有子视图。你可以声明的颜色状态列表类似你如何声明可绘制的状态列表。如果设置父内文本的状态列表颜色变成pressed中，pressed国家将适用于文本颜色为好。

编辑：报价信息是部分不正确，被别人编辑的：

  

使用：机器人：duplicateParentState =真为TextView的，也
  用途：机器人：颜色=@色/ myNewColor

此XML彩色文件被放置在一个项目的RES /彩色目录。

下面是从AOSP，用于默认文本的例子：<一href=\"http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/res/res/color/primary_text_dark.xml;h=f0812edbadcbcf6cd1a887b374ce7b6209e7d1b8;hb=HEAD\" rel=\"nofollow\">http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/res/res/color/primary_text_dark.xml;h=f0812edbadcbcf6cd1a887b374ce7b6209e7d1b8;hb=HEAD

编辑：您编辑我的答案不正确的信息。不管了Android的pressed状态传播。duplicateParentState设置

View.java，设置pressed方法调用dispatchSet $​​ P $ pssed：
<一href=\"http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/View.java;h=232dd6a8f63f4a3405053211d37e29c8a418ccc1;hb=HEAD#l3361\" rel=\"nofollow\">http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/View.java;h=232dd6a8f63f4a3405053211d37e29c8a418ccc1;hb=HEAD#l3361

ViewGroup.java，重写的dispatchSet $​​ P $ pssed方法将所有子视图pressed：
<一href=\"http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/ViewGroup.java;h=2b71b4a492e04d13cf46d5a1eee91f8a43f89112;hb=HEAD#l1710\" rel=\"nofollow\">http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/ViewGroup.java;h=2b71b4a492e04d13cf46d5a1eee91f8a43f89112;hb=HEAD#l1710

This shape is the backround of a linearLayout, how can I make any TextViews within the LinearLayout change their text color to white during the statePressed =true of the parent selector? Also see my previous question to see more of the code: Shape does not show

 <shape
            xmlns:android="http://schemas.android.com/apk/res/android">
            <solid
                android:color="#FFFFFF" />
            <stroke
                android:width="1dp"
                android:color="#AA000000" />
            <corners
                android:topLeftRadius="10dp"
                android:topRightRadius="10dp" />
            <gradient
                android:startColor="#6633cc"
                android:endColor="#00ccff"
                android:angle="270" />
        </shape> 

解决方案

Pressed state is propagated to all child views of a layout. You can declare a state list of colors similarly to how you declare a state list of drawables. If you set a state list color on text within a parent that becomes pressed, the pressed state will apply to the text color as well.

EDIT: The quoted information is partially incorrect and was edited in by someone else:

USE: android:duplicateParentState="true" for the TextView, also USE: android:color="@color/myNewColor"

This XML color file is placed in the res/color directory of a project.

Here's an example from AOSP, used for default text: http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/res/res/color/primary_text_dark.xml;h=f0812edbadcbcf6cd1a887b374ce7b6209e7d1b8;hb=HEAD

EDIT: You edited my answer with incorrect information. Pressed state is propagated regardless of the android:duplicateParentState setting.

View.java, the setPressed method invokes dispatchSetPressed: http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/View.java;h=232dd6a8f63f4a3405053211d37e29c8a418ccc1;hb=HEAD#l3361

ViewGroup.java, the overridden dispatchSetPressed method sets all child views pressed: http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/ViewGroup.java;h=2b71b4a492e04d13cf46d5a1eee91f8a43f89112;hb=HEAD#l1710

这篇关于如何使图形的孩子的TextView白当STATE_ pressed =＆QUOT;真＆QUOT;的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！