【Android】使用Gallery组件实现循环显示图像

imagedemo.setImageDrawable(getResources().getDrawable(iViews[position%iViews.length]));

package com.app.test01;

import com.app.adapter.ImageAdapter;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Gallery;
import android.widget.ImageView;

public class GalleryTest extends Activity{
Gallery gallery;
ImageView imagedemo;
ImageAdapter iAdapter = new ImageAdapter(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gallery);

gallery = (Gallery) findViewById(R.id.gallery1);
imagedemo = (ImageView) findViewById(R.id.imagedemo);

gallery.setAdapter(iAdapter);
gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
Integer[] iViews = iAdapter.getmImageIds();
imagedemo.setImageDrawable(getResources().getDrawable(iViews[position%iViews.length]));
}
});
}
}

package com.app.adapter;

import com.app.test01.R;

import android.content.Context;
import android.content.res.TypedArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;

public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}

public int getCount() { /* 重写方法getCount,传回图片数目总数 */
return Integer.MAX_VALUE;
}

public Object getItem(int position) {/* 重写的getItem,传回position */
return position;
}

public long getItemId(int position) {/*重写方法getItemId,传回position */
return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
i.setImageResource(mImageIds[position%mImageIds.length]);/* 设定图片给imageView对象 */
i.setLayoutParams(new Gallery.LayoutParams(150,75));
return i;
}

public Integer[] getmImageIds() {
return mImageIds;
}

public void setmImageIds(Integer[] mImageIds) {
this.mImageIds = mImageIds;
}

private Integer[] mImageIds = {
R.drawable.image01,
R.drawable.image02,
R.drawable.image03,
R.drawable.image04,
R.drawable.image05,
R.drawable.image06,
R.drawable.image07,
R.drawable.image08,
R.drawable.image09,
};
}