改变线性布局的背景颜色，而点击 [英] Changing Linear layout background color while clicking

问题描述

我有我的XML的线性布局，并正在通过Java增加一个线性布局（包含两个textviews）到线性布局。触摸事件的作品完美，但我要强调通过设置背景颜色选择的线性布局。请指点。

I am having a linear layout in my xml and am adding another linear layout(containing two textviews) to that linear layout through java. Touch events works perfect, but i want to highlight the selected linear layout by setting background color. Please advice.

推荐答案

定义background.xml在绘制文件夹

Define background.xml in drawable folder

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" 
    android:drawable="@drawable/pressed" />
<item  android:state_focused="false" 
    android:drawable="@drawable/normal" />
</selector>

normal.xml在绘制文件夹

normal.xml in drawable folder

<?xml version="1.0" encoding="UTF-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android"> 
<solid android:color="#FFFFFF"/>    
</shape>

pressed.xml在绘制文件夹

pressed.xml in drawable folder

<?xml version="1.0" encoding="UTF-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android"> 
<solid android:color="#FF1A47"/>      
</shape>

然后设置背景布局

Then set background to your layout

  android:background="@drawable/background"

您还可以设置背景如下

在布局的触摸

  ll.setOnTouchListener( new View.OnTouchListener()
    {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub
            switch(event.getAction())
            {
        case MotionEvent.ACTION_DOWN:
            ll.setBackgroundColor(Color.RED);
            break;
            case MotionEvent.ACTION_UP:

            //set color back to default
            ll.setBackgroundColor(Color.WHITE);  
            break;
            }
            return true;        
        }
    });

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