ListView实现丰富的列表功能
ListView实现丰富的列表功能
1.主布局activity_main.xml
<?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">
<ListView
android:id="@+id/list_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>2.子项布局fruit_item.xml
<?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">
<ImageView
android:id="@+id/fruit_image"
android:layout_width="150dp"
android:layout_height="150dp"
/>
<TextView
android:id="@+id/fruit_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="10dp"/>
</LinearLayout>3.水果实体类Fruit.java
package demo.jq.com.listviewtest;
/**
* Created by DianDoDo on 2017/9/28.
*/
public class Fruit {
private String name;
private int imageId;
public Fruit(String name,int imageId) {
this.name = name;
this.imageId = imageId;
}
public String getName() {
return name;
}
public int getImageId() {
return imageId;
}
}4.水果适配器FruitAdapter.java
package demo.jq.com.listviewtest;
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;
import java.util.List;
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) {
Fruit fruit = getItem(position);
View view = LayoutInflater.from(getContext()).inflate(resourceId,parent,false);
ImageView fruitImage = (ImageView) view.findViewById(R.id.fruit_image);
TextView fruitName = (TextView) view.findViewById(R.id.fruit_name);
fruitImage.setImageResource(fruit.getImageId());
fruitName.setText(fruit.getName());
return view;
}
}5.主体逻辑MainActivity.java
package demo.jq.com.listviewtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
import static android.R.attr.data;
public class MainActivity extends AppCompatActivity {
// private String[] data = {"Apple","Banana","Orange","Watermelon","Apple","Banana","Orange","Watermelon","Apple","Banana","Orange","Watermelon","Apple","Banana","Orange","Watermelon"};
private List<Fruit> fruitList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initFruits(); // 初始化水果数据
FruitAdapter adapter = new FruitAdapter(MainActivity.this,R.layout.fruit_item,fruitList);
// ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,data);
ListView listView = (ListView) findViewById(R.id.list_view);
listView.setAdapter(adapter);
}
private void initFruits() {
for(int i = 0;i<2;i++) {
Fruit apple = new Fruit("Apple",R.drawable.apple_pic);
fruitList.add(apple);
Fruit banana = new Fruit("Banana",R.drawable.banana_pic);
fruitList.add(banana);
Fruit orange = new Fruit("Orange",R.drawable.orange_pic);
fruitList.add(orange);
Fruit watermelon = new Fruit("Watermelon",R.drawable.watermelon_pic);
fruitList.add(watermelon);
}
}
}
添加选项点击事件
listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view, int positon, long id) {
Fruit fruit = fruitList.get(positon);
Toast.makeText(MainActivity.this,fruit.getName(),Toast.LENGTH_SHORT).show();
}
});
本文转自TBHacker博客园博客，原文链接：http://www.cnblogs.com/jiqing9006/p/7607814.html，如需转载请自行联系原作者
