更多精彩内容,请点击阅读: 《API Demos 2.3 学习笔记》 在TextView及其子类控件中,当文本内容太长,超过控件长度时,默认情况下,无法完全显示文本内容。此时,通过在xml布局文件中设置控件的android:ellipsize属性,可以将无法显示的部分用省略号表示,
更多精彩内容,请点击阅读:《API Demos 2.3 学习笔记》
1、默认不处理
android:singleLine="true" android:ellipsize="none"
2、省略号放在起始
android:singleLine="true" android:ellipsize="start"
3、省略号放在中间
android:singleLine="true" android:ellipsize="middle"
4、省略号放在结束
android:singleLine="true" android:ellipsize="end"
5、跑马灯效果
android:focusable="true" android:focusableInTouchMode="true" android:singleLine="true" android:ellipsize="marquee" android:marqueeRepeatLimit="marquee_forever"
注:1、android:singleLine="true"表示单行显示。
2、在设置跑马灯效果时候,最好加上android:focusable="true"和android:focusableInTouchMode="true",分别表示可以获得焦点,和在触摸模式下可以获得焦点。
3、android:marqueeRepeatLimit表示跑马灯效果重复显示的次数,只能取值marquee_forever和正整数。取值marquee_forever时,表示跑马灯效果一直重复显示。
下面我们进行实例代码解析:
res-value-string.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="marquee_default">This use the default marquee animation limit of 3</string> <string name="marquee_once">This will run the marquee animation once</string> <string name="marquee_forever">This will run the marquee animation forever</string> </resources>
res-layout-marquee.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <!-- 默认跑马灯效果 --> <button android:layout_width="150dip" android:layout_height="wrap_content" android:text="@string/marquee_default" android:singleline="true" android:ellipsize="marquee"></button> <!-- 跑马灯效果,重复播放一次 --> <button android:layout_width="150dip" android:layout_height="wrap_content" android:text="@string/marquee_once" android:singleline="true" android:ellipsize="marquee" android:marqueerepeatlimit="1"></button> <!-- 跑马灯效果,一直重复播放 --> <button android:layout_width="150dip" android:layout_height="wrap_content" android:text="@string/marquee_forever" android:singleline="true" android:ellipsize="marquee" android:marqueerepeatlimit="marquee_forever"></button> </linearlayout>
src-com.example.android.apis.text-Marquee.java
package com.example.android.apis.text; import com.example.android.apis.R; import android.app.Activity; import android.os.Bundle; public class Marquee extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //将marquee布局文件渲染出一个View对象,并作为Activity的默认View setContentView(R.layout.marquee); } }
效果预览:

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