文本切换器的功能和用法_安卓文本切换器的作用

MainActivity.java

package com.lxm.textswitchertest;
 
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher.ViewFactory;
 
public class MainActivity extends Activity {
	private TextSwitcher textSwitcher;
	String[] strs = new String[]{"瘋狂Java講義","輕量級JavaEE企業應用實戰","瘋狂Android講義","瘋狂Ajax講義"};
	int curStr;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		textSwitcher = (TextSwitcher) findViewById(R.id.textSwitcher);
		textSwitcher.setFactory(new ViewFactory() {
			
			@Override
			public View makeView() {
				TextView tv = new TextView(MainActivity.this);
				tv.setTextSize(40);
				tv.setTextColor(Color.MAGENTA);
				return tv;
			}
		});
		next(null);
	}
	public void next(View v){
		textSwitcher.setText(strs[curStr++ % strs.length]);
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
 
}

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
 
    <TextSwitcher
        android:id="@+id/textSwitcher"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="next"/>
 
</RelativeLayout>

运行效果：