Android(安卓)UI控件详解-GridView(网格视图)

xml布局
源代码
package com.example.gridview;import android.os.Bundle;import android.app.Activity;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.AdapterView.OnItemClickListener;import android.widget.GridView;import android.widget.Toast;/** * * @author TXF * * GridView(网格视图，适配器和Gallery的适配器是一样的) * */public class MainActivity extends Activity {    private GridView mgv;    private Context mcontext;    private Integer[] imageIds = { R.drawable.a, R.drawable.b, R.drawable.c,            R.drawable.d, R.drawable.e };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mgv = (GridView) findViewById(R.id.gridview);        // 设置GridView的背景        // mgv.setBackgroundColor(Color.BLUE);        // 设置GridView的条目事件监听        mgv.setOnItemClickListener(new OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> arg0, View arg1,                    int position, long id) {                Toast.makeText(MainActivity.this,                        "您选择了" + (position + 1) + "号图片", 0).show();            }        });        // 设置适配器和Gallery的适配器是一样的，都是自定义适配器        mgv.setAdapter(new MyAdapter(this));    }    private class MyAdapter extends BaseAdapter {        public MyAdapter(Context c) {            mcontext = c;        }        @Override        public int getCount() {            return imageIds.length;        }        @Override        public Object getItem(int position) {            return imageIds[position];        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int arg0, View arg1, ViewGroup arg2) {            ImageView iv = new ImageView(mcontext);            // 设置图片资源            iv.setImageResource(imageIds[arg0]);            // 设置布局图片的比例以90*90显示(宽高)            iv.setLayoutParams(new GridView.LayoutParams(90, 90));            // 设置图片显示的比例类型            iv.setScaleType(ImageView.ScaleType.CENTER);            // 返回图片            return iv;        }    }}
效果图
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