Android的GridView控件用於把一系列的空間組織成一個二維的網格顯示出來應用的比較多的就是組合圖片顯示下面我就詳細講一個例子
package com.android.test;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class AndroidGridActivity extends BaseAdapter {
/** Called when the activity is first created. */
private Context mContext;
private Integer[] mImageIds={
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.img4,
R.drawable.img5,
R.drawable.img6,
R.drawable.img7,
R.drawable.img8,
R.drawable.img9
};
public AndroidGridActivity(Context c){
mContext = c;
}
//獲取圖片個數
@Override
public int getCount() {
// TODO Auto-generated method stub
return mImageIds.length;
}
//獲取圖片所在庫中的位置
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
//獲取圖片ID
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView imageView;
if(convertView==null){
//給ImageView設置資源
imageView = new ImageView(mContext);
//設置佈局 圖片120*120顯示
imageView.setLayoutParams(new GridView.LayoutParams(85,85));
//設置顯示比例類型
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
}else{
imageView = (ImageView)convertView;
}
imageView.setImageResource(mImageIds[position]);
return imageView;
}
}
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
public class TestActivity extends Activity{
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//獲取GridView的對象
GridView gridview = (GridView)findViewById(R.id.gridview);
//添加元素給gridview
gridview.setAdapter(new AndroidGridActivity(this));
//設置背景顏色
gridview.setBackgroundColor(R.drawable.background);
//事情監聽
gridview.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Toast.makeText(TestActivity.this, "你選擇了"+(arg2+1)+"圖片號", Toast.LENGTH_SHORT).show();
}
});
}
}
說明:程序中需要的圖片自己構造,這個不難。
ImageView api可以參考如下:http://developer.android.com/reference/android/widget/ImageView.html
http://developer.android.com/reference/android/widget/GridView.html
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