android之ImageSwitcher 圖片查看

布局文件如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ImageSwitcher android:id="@+id/switcher"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true">
    </ImageSwitcher>
    <Gallery android:id="@+id/gallery"
        android:layout_width="fill_parent"
        android:layout_alignParentLeft="true"
        android:layout_height="60dp"
        android:spacing="15dp"
        android:layout_alignParentBottom="true"
        android:gravity="center_vertical"
        android:background="#aaaaaa">
    </Gallery>
</RelativeLayout>

package com.cloay.imageswitcher;

import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Gallery.LayoutParams;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher.ViewFactory;
/**

ImageSwitcherActivity.java
@author cloay
2011-7-16
*/
public class ImageSwitcherActivity extends Activity implements OnItemSelectedListener, ViewFactory{
 private ImageSwitcher imageSwitcher;
 private Gallery gallery;
 private Integer [] imagesId = new Integer[]{R.drawable.b, R.drawable.c, R.drawable.d,

     R.drawable.f, R.drawable.g};

private Integer [] selectId = new Integer[]{R.drawable.b, R.drawable.c, R.drawable.d,

     R.drawable.f, R.drawable.g};

@Override
 public void onCreate(Bundle savedInstanceState) {

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

 imageSwitcher = (ImageSwitcher)findViewById(R.id.switcher);
 imageSwitcher.setFactory(this);
 //設置圖片切換時的動畫效果
 imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
 imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));

 gallery = (Gallery)findViewById(R.id.gallery);
 //自定義ImageAdapter繼承于BaseAdapter，是一個內部類
 gallery.setAdapter(new ImageAdapter(this));
 gallery.setOnItemSelectedListener(this);

}
@Override
 public View makeView() {

 ImageView image = new ImageView(this);
 image.setScaleType(ImageView.ScaleType.FIT_CENTER);
 image.setLayoutParams(new ImageSwitcher.LayoutParams(
         LayoutParams.FILL_PARENT, LayoutParams.MATCH_PARENT));
 return image;

}
@Override
 public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,

     long arg3) {
 imageSwitcher.setImageResource(imagesId[arg2]);

}
@Override
 public void onNothingSelected(AdapterView<?> arg0) {
}
 public class ImageAdapter extends BaseAdapter{

 private Context context;
 int galleryItemBackground;
 public ImageAdapter (Context c){
     context = c;
     TypedArray typeArray = obtainStyledAttributes(R.styleable.Gallery1);
     galleryItemBackground = typeArray.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 0);
     typeArray.recycle();
 }
 @Override
 public int getCount() {
     //返回selectId[]的長度
     return selectId.length;
 }

 @Override
 public Object getItem(int position) {
     return position;
 }

 @Override
 public long getItemId(int position) {
     return position;
 }

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
     ImageView imageView = new ImageView(context);
     //設置資源圖片
     imageView.setImageResource(selectId[position]);
     imageView.setAdjustViewBounds(true);  //允許調整邊框
     //設定底部畫廊，自適應大小
     imageView.setLayoutParams(new Gallery.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
     //設置畫廊背景
     imageView.setBackgroundResource(galleryItemBackground);
     return imageView;
 }


}
}</pre>轉自：http://blog.csdn.net/shang_515/article/details/6782844