MainActivity:
package com.example.app04_gridview;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private GridView gv_main;
private MainAdapter adapter;
String[]names = new String[]{"应用1","应用2","应用3","应用4","应用5","应用6","应用7","应用8","应用9"};
int[] icons = new int[]{R.drawable.widget01,R.drawable.widget02,R.drawable.widget03,R.drawable.widget04,R.drawable.widget05,R.drawable.widget06,R.drawable.widget07,R.drawable.widget08,R.drawable.widget09};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gv_main=(GridView) findViewById(R.id.gv_main);
adapter=new MainAdapter(MainActivity.this,names,icons);
gv_main.setAdapter(adapter);
//给GridView设置Item的点击监听
gv_main.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
//得到当前点击的名称
String name=names[position];
//提示
Toast.makeText(MainActivity.this,name,Toast.LENGTH_SHORT).show();
}
});
}
}
MainAdapter:
package com.example.app04_gridview;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class MainAdapter extends BaseAdapter{
private Context context;
private String[] names;
private int[] icons;
public MainAdapter(Context context,String[] names, int[] icons) {
this.context=context;
this.names=names;
this.icons=icons;
}
@Override
public int getCount() {
return names.length;
}
@Override
public Object getItem(int position) {
return names[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder= null;
if (convertView==null) {
// Log.e("TAG",""); // 日志
convertView = View.inflate(context,R.layout.item_main,null);
holder=new ViewHolder();
holder.imageView=(ImageView) convertView.findViewById(R.id.iv_item_icon);
holder.textView=(TextView) convertView.findViewById(R.id.tv_item_name);
convertView.setTag(holder);
}else{
holder=(ViewHolder) convertView.getTag();
}
holder.imageView.setImageResource(icons[position]);
holder.textView.setText(names[position]);
return convertView;
}
class ViewHolder{
ImageView imageView;
TextView textView;
}
}
activity_main布局:
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gv_main"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:numColumns="3"
android:verticalSpacing="10dp">
</GridView>
item_main布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="80dp"
android:layout_height="80dp"
android:orientation="vertical"
android:gravity="center"
>
<ImageView
android:id="@+id/iv_item_icon"
android:layout_width="60dp"
android:layout_height="60dp"
android:src="@drawable/ic_launcher"/>
<TextView
android:id="@+id/tv_item_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="名称"
android:textSize="16sp"
/>
</LinearLayout>
