Android开发之ViewSwitcher用法实例

Activity的代码：

package com.example.AndroidTest;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ViewSwitcher;
public class MyActivity extends Activity {
  Button buttonPrev, buttonNext;
  ViewSwitcher viewSwitcher;
  Animation slide_in_left, slide_out_right;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    buttonPrev = (Button) findViewById(R.id.prev);
    buttonNext = (Button) findViewById(R.id.next);
    viewSwitcher = (ViewSwitcher) findViewById(R.id.viewswitcher);
    slide_in_left = AnimationUtils.loadAnimation(this,
        android.R.anim.slide_in_left);
    slide_out_right = AnimationUtils.loadAnimation(this,
        android.R.anim.slide_out_right);
    viewSwitcher.setInAnimation(slide_in_left);
    viewSwitcher.setOutAnimation(slide_out_right);
    buttonPrev.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View arg0) {
        viewSwitcher.showPrevious();
      }
    });
    buttonNext.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View arg0) {
        viewSwitcher.showNext();
      }
    });
    ;
  }
}

实现效果图：

使用ViewSwitcher的setFactory设置切换的View，分为两步。

第一步：获得ViewSwithcer的实例

switcher = (ViewSwitcher) findViewById(R.id.viewSwitcher);

第二部：实现接口ViewFactory