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>