切换图片（ImageSwitcher）
java.lang.Object;
android.view.View; android.widget.ViewGroup; android.widget.FrameLayout; android.widget.ViewAnimator; android.widget.ImageSwitcher;ImageSwitcher 提供了显示图片以及图片切换的动画，这一块能够应用于制作动感影集。
ImageSwitcher 类方法
ImageSwitcher 和 Gallery 演示样例
完整project：
ViewFactory下述project中主要演示了 ImageSwitcher 和 Gallery 的使用方法，须要注意的是：ViewFactory.makeView 的实现中，ImageView 所要设置的布局类型是 FrameLayout.LayoutParams，除此之外，其它地方出现要设置的參数均为 Gallery.LayoutParams。否则会导致崩溃！
此外还能够学习下，Window 相关的属性
1.MainActivity.java
package com.sweetlover.activity;import com.sweetlover.imageswitcher.R;import android.app.Activity;import android.content.Context;import android.graphics.Color;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.FrameLayout;import android.widget.Gallery.LayoutParams;import android.widget.ImageView;import android.widget.ImageView.ScaleType;import android.widget.ViewSwitcher.ViewFactory;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageSwitcher;@SuppressWarnings("deprecation")public class MainActivity extends Activity implements ViewFactory, OnItemSelectedListener { public class SelfAdapter extends BaseAdapter { private Context context = null; public SelfAdapter(Context context) { super(); this.context = context; } @Override public int getCount() { // TODO Auto-generated method stub return pic.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return pic[position]; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ImageView imageView = new ImageView(context); LayoutParams param = new LayoutParams(WIDTH, HEIGHT); imageView.setImageResource(pic[position]); imageView.setAdjustViewBounds(true); imageView.setLayoutParams(param); return imageView; } } private Gallery gallery = null; private SelfAdapter selfAdapter = null; private ImageSwitcher imageSwitcher = null; private FrameLayout.LayoutParams param = null; private static final int WIDTH = 480; private static final int HEIGHT = 640; private static final int BACKGND_COLOR = Color.BLACK; private static final int IN_ANIM = android.R.anim.fade_in; private static final int OUT_ANIM = android.R.anim.fade_out; private static final Integer[] pic = { R.drawable.pic1, R.drawable.pic2, R.drawable.pic3 }; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); gallery = (Gallery) findViewById(R.id.gallery); imageSwitcher = (ImageSwitcher) findViewById(R.id.imageSwitcher); selfAdapter = new SelfAdapter(this); imageSwitcher.setFactory(this); imageSwitcher.setInAnimation(AnimationUtils .loadAnimation(this, IN_ANIM)); imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, OUT_ANIM)); gallery.setAdapter(selfAdapter); gallery.setOnItemSelectedListener(this); } @Override public void onItemSelected(AdapterView parent, View view, int position, long id) { // TODO Auto-generated method stub imageSwitcher.setImageResource(pic[position]); } @Override public void onNothingSelected(AdapterView > parent) { // TODO Auto-generated method stub } @Override public View makeView() { // TODO Auto-generated method stub ImageView imageView = new ImageView(this); param = new FrameLayout.LayoutParams(WIDTH, HEIGHT, Gravity.CENTER); imageView.setBackgroundColor(BACKGND_COLOR); imageView.setScaleType(ScaleType.CENTER); imageView.setLayoutParams(param); return imageView; } }