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MainActivity.javapackage com.example.listviewdemo;
import java.util.ArrayList;
import java.util.List;
import com.example.listviewdemo.adapter.FruitAdapter;
import com.example.listviewdemo.entity.Fruit;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
private GridView gvFruits;
private List<Fruit> fruitList = new ArrayList<Fruit>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gvFruits = (GridView) findViewById(R.id.gvFruit);
getData();
FruitAdapter fruitAdapter = new FruitAdapter(this, R.layout.listview_item, fruitList);
gvFruits.setAdapter(fruitAdapter);
gvFruits.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position,
long id) {
// TODO Auto-generated method stub
Fruit fruit = fruitList.get(position);
Toast.makeText(MainActivity.this, fruit.getName(), Toast.LENGTH_LONG);
}
});
}
private void getData(){
int[] imageIds = {R.drawable.apple_pic,R.drawable.banana_pic,
R.drawable.cherry_pic,R.drawable.grape_pic,
R.drawable.mango_pic,R.drawable.orange_pic,
R.drawable.pear_pic,R.drawable.pineapple_pic,
R.drawable.strawberry_pic,R.drawable.watermelon_pic};
String[] names = {"苹果","香蕉","樱桃","葡萄","芒果","橘子","梨","菠萝","草莓","西瓜"};
for(int i = 0;i<imageIds.length;i++){
fruitList.add(new Fruit(imageIds[i], names[i]));
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
FruitAdapter.java
package com.example.listviewdemo.adapter;
import java.util.List;
import com.example.listviewdemo.R;
import com.example.listviewdemo.entity.Fruit;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class FruitAdapter extends ArrayAdapter<Fruit> {
private int resourceId;
public FruitAdapter(Context context, int textViewResourceId,
List<Fruit> objects) {
super(context, textViewResourceId, objects);
resourceId = textViewResourceId;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view ;
ViewHolder viewHolder;
if(convertView == null){
view = LayoutInflater.from(getContext()).inflate(resourceId, null);
viewHolder = new ViewHolder();
viewHolder.fruitImage = (ImageView)view.findViewById(R.id.ivImage);
viewHolder.fruitName = (TextView)view.findViewById(R.id.tvName);
view.setTag(viewHolder);
}
else{
view = convertView;
viewHolder = (ViewHolder)view.getTag();
}
Fruit fruit = getItem(position);
viewHolder.fruitImage.setImageResource(fruit.getImageId());
viewHolder.fruitName.setText(fruit.getName());
return view;
}
}
class ViewHolder{
ImageView fruitImage;
TextView fruitName;
}
package com.example.listviewdemo.entity;
public class Fruit {
private int imageId;
private String name;
public int getImageId() {
return imageId;
}
public void setImageId(int imageId) {
this.imageId = imageId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Fruit(int imageId, String name) {
super();
this.imageId = imageId;
this.name = name;
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/ivImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:src="@drawable/apple_pic"
/>
<TextView
android:id="@+id/tvName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout><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"
android:padding="10dp" >
<GridView
android:id="@+id/gvFruit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:numColumns="4" >
</GridView>
</RelativeLayout>标签:
原文地址:http://blog.csdn.net/yoyo__yy/article/details/51361505