MainActivity.java
复制代码 代码如下:
package com.zhang.showPhoto;

import android.app.ActionBar.LayoutParams;
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.Button;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher.ViewFactory;

public class MainActivity extends Activity {

private int[] imagId=new int[]{
R.drawable.img01,R.drawable.img02,R.drawable.img03,R.drawable.img04,
R.drawable.img05,R.drawable.img06,R.drawable.img07,R.drawable.img08,
R.drawable.img09,R.drawable.img10
};
private int index=0;
private ImageSwitcher imageSwitcher;
private Button up,down;

@Override
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
setContentView(R.layout.main);

up=(Button) findViewById(R.id.bt1);
down=(Button) findViewById(R.id.bt2);


imageSwitcher=(ImageSwitcher) findViewById(R.id.imagSw1);
imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));
imageSwitcher.setFactory(new ViewFactory() {


public View makeView() {
ImageView imageView = new ImageView(MainActivity.this);
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
imageView.setLayoutParams(new ImageSwitcher.LayoutParams(
LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT
));
return imageView;
}
});

imageSwitcher.setImageResource(imagId[index]);

up.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
if(index>0){
index--;
}else{
index=imagId.length-1;
}
imageSwitcher.setImageResource(imagId[index]);
}
});

down.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
if(index<imagId.length-1){
index++;
}else{
index=0;
}
imageSwitcher.setImageResource(imagId[index]);
}
});
}
}

main.xml
复制代码 代码如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@drawable/bg1"
android:id="@+id/llayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="horizontal" >

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="上一张"
android:id="@+id/bt1"
/>
<ImageSwitcher
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imagSw1"
android:layout_gravity="center"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="下一张"
android:id="@+id/bt2"
/>

</LinearLayout>