佈局文件main.xml文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Gallery android:layout_height="wrap_content"
android:id="@+id/gallery1"
android:layout_width="match_parent">
</Gallery>
<ImageView android:layout_height="fill_parent"
android:src="@drawable/r1"
android:layout_width="fill_parent"
android:id="@+id/imageView1">
</ImageView>
</LinearLayout>
package com.li.xt.activity;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class XiaotechActivity extends Activity {
int[] items={R.drawable.r1,R.drawable.r2,R.drawable.r3,R.drawable.r4,R.drawable.e,R.drawable.f,
R.drawable.g,R.drawable.g,R.drawable.h,R.drawable.haha3,R.drawable.j};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Gallery g=(Gallery)findViewById(R.id.gallery1);
g.setAdapter(new Image(this));
g.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener(){
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,int arg2, long arg3) {
ImageView img=(ImageView)findViewById(R.id.imageView1);
img.setImageResource(items[arg2]);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
}
}
class Image extends BaseAdapter{
Context ctx;
int[] items={R.drawable.r1,R.drawable.r2,R.drawable.r3,R.drawable.r4,R.drawable.e,R.drawable.f,
R.drawable.g,R.drawable.g,R.drawable.h,R.drawable.haha3,R.drawable.j};
public Image(Context ctx){
this.ctx=ctx;
}
@Override
public int getCount() {
return items.length;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView img;
if(convertView==null){
img=new ImageView(ctx);
}else{
img=(ImageView)convertView;
img.setImageResource(items[position]);
img.setLayoutParams(new Gallery.LayoutParams(150,150));
img.setScaleType(ImageView.ScaleType.FIT_XY);
}
return img;
}
}