TextSwitcher运用示例

TextSwitcher使用示例

mainActivity如下:

package c.c;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.AnimationUtils;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher.ViewFactory;
public class MainActivity extends Activity {
    private TextSwitcher mIextSwitcher;
    private String texts [];
    private int textIndex=0;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        init();
    }
   private void init(){
	   texts=new String[]{"空山新雨后","天气晚来秋","明月松间照","清泉石上流"};
	   mIextSwitcher=(TextSwitcher) findViewById(R.id.textSwitcher);
	   //设置用于显示文字的TextView
	   mIextSwitcher.setFactory(new ViewFactory() {
		public View makeView() {
			TextView textView=new TextView(MainActivity.this);
			textView.setTextSize(30);
			return textView;
		 }
	   });
	   //处理点击事件
	   mIextSwitcher.setOnClickListener(new ClickListenerImpl());
	   //设置文字进入和退出动画
	   mIextSwitcher.setInAnimation
	   (AnimationUtils.loadAnimation(MainActivity.this, android.R.anim.slide_in_left));
	   mIextSwitcher.setOutAnimation
	   (AnimationUtils.loadAnimation(MainActivity.this, android.R.anim.slide_in_left));
	   //设置初始时显示的文字
	   mIextSwitcher.setText(texts[textIndex]);
   }

	private class ClickListenerImpl implements OnClickListener {
		public void onClick(View v) {
			textIndex++;
			if (textIndex == texts.length) {
				textIndex = 0;
			}
			 mIextSwitcher.setText(texts[textIndex]);
		}

	}
}

main.xml如下:

<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" >

   <TextSwitcher
       android:id="@+id/textSwitcher" 
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_centerInParent="true"
   />

</RelativeLayout>