Android学习第十二天----GridView

xml中

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="@string/hello_world" />

    <GridView
        android:id="@+id/gridView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:numColumns="3" 
        android:verticalSpacing="20dp"
        android:horizontalSpacing="20dp">
    </GridView>

</RelativeLayout>

 

 

第二个xml中，用于存放素材的位置

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >
    
    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textview1"
        android:layout_gravity="center"/>
    
</LinearLayout>

java代码：

package cn.will.test;

import android.os.Bundle;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.Menu;
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.TextView;

public class MainActivity extends Activity {

    private String [] photo_name={"aaaaaaa","bbbbbbb","ccccc","dddddd","eeeee","fffff"};
    private int [] photo={R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d,R.drawable.e,R.drawable.f};
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        
        GridView mGridView=(GridView)findViewById(R.id.gridView1);
        
        mGridView.setAdapter(new MyAdapter());
        
        mGridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                System.out.println("aaaaaaaaaaaaaaaaaaaa");
            }
        });
    }
    
    private class MyAdapter extends BaseAdapter
    {
        @Override
        public int getCount() {
            return 5;
        }

        @Override
        public Object getItem(int arg0) {
            return null;
        }

        @Override
        public long getItemId(int arg0) {
            // TODO Auto-generated method stub
            return 0;
        }

        @Override
        public View getView(int position, View arg1, ViewGroup arg2) {
            
            LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
            View view=(View)inflater.inflate(R.layout.activity_main_gv, null);
            ImageView imageView=(ImageView)view.findViewById(R.id.imageView1);
            TextView textView=(TextView)view.findViewById(R.id.textview1);
            
            imageView.setImageResource(photo[position]);
            textView.setText(photo_name[position]);
            
            return view;
        }
        
    }

}