标签：
实现的效果图如下：（在《第一行代码的例子上加以修改的》），当点击全选的时候，效果如下：
当只选中下面的几个：
此时按下，反选，如图：
首先是布局：
<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:background="#f2f0eb"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="50" >
<ListView
android:id="@+id/list_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/transparent"
android:cacheColorHint="#00000000"
android:divider="#D4D4D4"
android:dividerHeight="1px"
android:fastScrollEnabled="true"
android:overScrollMode="never" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dip"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dip"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:background="@drawable/button_register_bg"
android:gravity="center"
android:onClick="selectAll"
android:paddingBottom="7dp"
android:paddingTop="7dp"
android:text="全选"
android:textColor="@android:color/white"
android:textSize="18sp" />
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dip"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dip"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:background="@drawable/button_login_bg"
android:gravity="center"
android:onClick="selectOppo"
android:paddingBottom="7dp"
android:paddingTop="7dp"
android:text="反选"
android:textColor="@android:color/white"
android:textSize="18sp" />
</LinearLayout>
</LinearLayout>在MainActivity中：
public void selectAll(View view){
for(Fruit fruit : fruitList){
fruit.setChecked(true);
}
adapter.notifyDataSetChanged();
}
public void selectOppo(View view){
for(Fruit fruit : fruitList){
fruit.setChecked(!fruit.isChecked());
}
adapter.notifyDataSetChanged();
}完整的代码：
MainActivity：
package com.example.uilistviewtest;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
import com.example.uilistviewtest.FruitAdapter.ViewHolder;
public class MainActivity extends Activity {
private List<Fruit> fruitList = new ArrayList<Fruit>();
private FruitAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initFruits();
adapter = new FruitAdapter(MainActivity.this,
R.layout.fruit_item, fruitList);
ListView listView = (ListView) findViewById(R.id.list_view);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Fruit fruit = fruitList.get(position);
ViewHolder holder = (ViewHolder) view.getTag();
if (fruit.isChecked()) {
fruit.setChecked(false);
holder.cb.setChecked(false);
} else {
fruit.setChecked(true);
holder.cb.setChecked(true);
}
Toast.makeText(MainActivity.this, fruit.getName(),
Toast.LENGTH_SHORT).show();
}
});
}
public void selectAll(View view){
for(Fruit fruit : fruitList){
fruit.setChecked(true);
}
adapter.notifyDataSetChanged();
}
public void selectOppo(View view){
for(Fruit fruit : fruitList){
fruit.setChecked(!fruit.isChecked());
}
adapter.notifyDataSetChanged();
}
private void initFruits() {
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);
Fruit pear = new Fruit("Pear", R.drawable.pear_pic);
fruitList.add(pear);
Fruit grape = new Fruit("Grape", R.drawable.grape_pic);
fruitList.add(grape);
Fruit pineapple = new Fruit("Pineapple", R.drawable.pineapple_pic);
fruitList.add(pineapple);
Fruit strawberry = new Fruit("Strawberry", R.drawable.strawberry_pic);
fruitList.add(strawberry);
Fruit cherry = new Fruit("Cherry", R.drawable.cherry_pic);
fruitList.add(cherry);
for (int i = 0; i < 10; i++) {
Fruit mango = new Fruit("Mango", R.drawable.mango_pic);
fruitList.add(mango);
}
}
}package com.example.uilistviewtest;
public class Fruit {
private String name;
private int imageId;
private boolean checked;
public Fruit(String name, int imageId) {
this.name = name;
this.imageId = imageId;
}
public String getName() {
return name;
}
public int getImageId() {
return imageId;
}
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
}
package com.example.uilistviewtest;
import java.util.List;
import android.content.Context;
import android.support.v4.widget.CursorAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.SimpleAdapter;
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;
}
CursorAdapter ca;
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Fruit fruit = getItem(position);
View view;
ViewHolder viewHolder;
if (convertView == null) {
view = LayoutInflater.from(getContext()).inflate(resourceId, null);
viewHolder = new ViewHolder();
viewHolder.fruitImage = (ImageView) view.findViewById(R.id.fruit_image);
viewHolder.fruitName = (TextView) view.findViewById(R.id.fruit_name);
viewHolder.cb = (CheckBox) view.findViewById(R.id.cb);
view.setTag(viewHolder);
} else {
view = convertView;
viewHolder = (ViewHolder) view.getTag();
}
viewHolder.fruitImage.setImageResource(fruit.getImageId());
viewHolder.fruitName.setText(fruit.getName());
viewHolder.cb.setChecked(fruit.isChecked());
return view;
}
class ViewHolder {
ImageView fruitImage;
TextView fruitName;
CheckBox cb;
}
}
标签：
原文地址：http://blog.csdn.net/chenfuduo_loveit/article/details/42519449
