import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends Activity implements OnItemClickListener{
private int imgs[]={
R.drawable.one,R.drawable.two,
R.drawable.three,R.drawable.four,
R.drawable.five,R.drawable.six,
R.drawable.seven,R.drawable.eight,
};
private String[] names={"A","B","C","D","E","F","G","H"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//1.获得GridView
GridView gv=(GridView)findViewById(R.id.gv01);
//2.创建适配器对象
GAdapter adapter=new GAdapter();
//3.关联适配器对象
gv.setAdapter(adapter);
//4.添加点击事件
gv.setOnItemClickListener(this);
}
class GAdapter extends BaseAdapter{
@Override
public int getCount() {
return imgs.length;
}
/**返回具体某个item中的数据*/
@Override
public Object getItem(int position) {
return imgs[position];
}
/**返回item的位置*/
@Override
public long getItemId(int position) {
return position;
}
/**借助此方法构建item对象*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//1.item view (列表项视图)
RelativeLayout layout=(RelativeLayout) View.inflate(MainActivity.this,
R.layout.grid_item_2, null);
//2.item data (列表项数据)
int imgId=imgs[position];
String name=names[position];
//3.将item data放到itemView上
//3.1获得放图片和文本具体位置
ImageView iv=(ImageView)layout.findViewById(R.id.img01);
TextView tv=(TextView) layout.findViewById(R.id.tv01);
iv.setImageResource(imgId);
tv.setText(name);
return layout;
}
}
/**点击GridView中的某个item时会自动执行此方法*/
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
//获得图片id
int imgId=(Integer)parent.getItemAtPosition(position);
}
}
<!--activity_main.xml-->
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/gv01"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:numColumns="2"
android:horizontalSpacing="1dp"
android:verticalSpacing="1dp"
tools:context=".MainActivity" >
</GridView>
//适配器item view布局grid_item_2.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="#ff669900" >
<ImageView
android:id="@+id/img01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:src="@drawable/one"
/>
<TextView
android:id="@+id/tv01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/img01"
android:layout_centerHorizontal="true"
android:text="2020"
android:textColor="#FFFFFFFF" />
</RelativeLayout>
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