单击时更改线性布局背景颜色

Question

我在我的xml中有一个线性布局,并通过java添加另一个线性布局(包含两个textview)到该线性布局.触摸事件非常完美,但我希望通过设置背景颜色来突出显示所选的线性布局.请指教.

Answer 1

在drawable文件夹中定义background.xml

<?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>

drawable文件夹中的normal.xml

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

drawable文件夹中的pressed.xml

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

然后将背景设置为您的布局

  android:background="@drawable/background"

您也可以设置背景如下

触摸您的布局

  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;        
        }
    });

Answer 2

无论您选择哪种方法(XML /代码) - 请确保您可以LinearLayout点击:

XML:

android:clickable="true"

码:

myLinearLayout.setClickable(true);

Answer 3

这是我的解决方案，非常简单：

<LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="@drawable/bg_pressed_tab"
            android:clickable="true"
            android:focusable="true"
            android:focusableInTouchMode="true"
            android:gravity="center"
            android:orientation="vertical">

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:contentDescription="@string/app_name"
                android:src="@mipmap/ic_launcher" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/service_request"
                android:textColor="@color/white"
                android:textSize="@dimen/text_size_small" />

            <requestFocus />
        </LinearLayout>

bg_tab_pressed.xml

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

    <item android:drawable="@color/colorPrimaryDark" android:state_focused="true" android:state_pressed="true" />

    <item android:drawable="@color/colorPrimaryDark" android:state_focused="false" android:state_pressed="true" />

    <item android:drawable="@color/colorPrimaryDark" android:state_focused="true" android:state_pressed="false" />

    <item android:drawable="@color/colorPrimary" android:state_focused="false" android:state_pressed="false" />

</selector>

Answer 4

将selector.xml文件放入drawable文件夹（res/drawable）

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


    <item android:drawable="@drawable/list_focused" android:state_pressed="true"/>
    <item android:drawable="@drawable/list_focused" android:state_enabled="true" android:state_focused="true" android:state_window_focused="true"/>
    <item android:drawable="@drawable/list_raw_img"/>

</selector>

并在 xml 文件中设置线性布局的背景

android:background="@drawable/background"