.xml

.java

package com.hanqi.application3;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;import android.widget.Toast;public class UIActivity6 extends AppCompatActivity {    int[] imid;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_ui6);        GridView gv_1= (GridView)findViewById(R.id.gv_1);        imid =new int[] {R.drawable.an1,R.drawable.an2,R.drawable.an3,                R.drawable.an1,R.drawable.an2,R.drawable.an3,                R.drawable.an1,R.drawable.an2,R.drawable.an3};        gv_1.setAdapter(new MyBaseAdapter());        gv_1.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView
      parent, View view, int position, long id) {                Toast.makeText(UIActivity6.this, "position =" + position, Toast.LENGTH_SHORT).show();            }        });    }    class MyBaseAdapter extends BaseAdapter    {        @Override        public int getCount() {            return imid.length;        }        @Override        public Object getItem(int position) {            return imid[position];        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            //获取数据            int Imageid = imid[position];            ImageView iv1 = null;            //构造视图            if (convertView == null)            {                iv1= new ImageView(UIActivity6.this);                //设置属性setLayoutParams                iv1.setLayoutParams(new GridView.LayoutParams(120,120));                iv1.setScaleType(ImageView.ScaleType.FIT_XY);            }            else            {                iv1 = (ImageView)convertView;            }            iv1.setImageResource(Imageid);            return iv1;        }    }}