activity_main.xml
<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" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="全选" android:layout_weight="1" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="反 选" android:layout_weight="1" /> <Button android:id="@+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="全不选" android:layout_weight="1" /> </LinearLayout> <ListView android:id="@+id/listveiw" android:layout_width="match_parent" android:layout_height="match_parent" ></ListView> </LinearLayout>
listveiw.xml
如果ListView的Item中包含CheckBox,由于CheckBox的焦 点优先级高于ListView,所以当选中ListView时,ListView将不会有选中的状态,解决的方法就是在checkbox组件中加一属 性:android:focusable="false"
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="ddd" /> <CheckBox android:id="@+id/checkbox" android:layout_width="wrap_content" android:layout_height="wrap_content" android:focusable="false" android:layout_alignParentRight="true" android:layout_alignParentTop="true" /> </RelativeLayout>
MainActivity.java
package com.bawei.day04_listview; import java.util.ArrayList; import java.util.List; import com.bawei.vo.Good; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.ListView; public class MainActivity extends Activity { private Button button1; private Button button2; private Button button3; private ListView listView; private List<Good> list; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button1 = (Button) findViewById(R.id.button1); button2 = (Button) findViewById(R.id.button2); button3 = (Button) findViewById(R.id.button3); listView = (ListView) findViewById(R.id.listveiw); list = new ArrayList<Good>(); for (int i = 0; i < 60; i++) { list.add(new Good("PP"+i, false)); } BaseAdapter adapter=new Adper(list,MainActivity.this,button1,button2,button3); listView.setAdapter(adapter); } }
list的vo包Good.java
package com.bawei.vo; public class Good { private String name; private boolean bo; public String getName() { return name; } public void setName(String name) { this.name = name; } public boolean getBo() { return bo; } public void setBo(boolean bo) { this.bo = bo; } @Override public String toString() { return "Good [name=" + name + ", bo=" + bo + "]"; } public Good(String name, boolean bo) { super(); this.name = name; this.bo = bo; } public Good() { super(); } }
Adper.java
package com.bawei.day04_listview; import java.util.List; import com.bawei.vo.Good; import android.content.Context; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.TextView; public class Adper extends BaseAdapter { List<Good> list; Context context; Button button1; Button button2; Button button3; public Adper(List<Good> list, Context context, Button button1, Button button2, Button button3) { // TODO Auto-generated constructor stub this.list=list; this.context=context; this.button1=button1; this.button2=button2; this.button3=button3; } public int getCount() { // TODO Auto-generated method stub return list.size(); } public Object getItem(int position) { // TODO Auto-generated method stub return null; } public long getItemId(int position) { // TODO Auto-generated method stub return 0; } public View getView(final int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub final ViewHolder viewHolder; if(convertView==null){ convertView=View.inflate(context, R.layout.listveiw, null); viewHolder=new ViewHolder(); viewHolder.textView=(TextView) convertView.findViewById(R.id.text); viewHolder.checkBox=(CheckBox) convertView.findViewById(R.id.checkbox); convertView.setTag(viewHolder); }else{ viewHolder=(ViewHolder) convertView.getTag(); } viewHolder.textView.setText(list.get(position).getName()); //checkbox监听 viewHolder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // TODO Auto-generated method stub if(isChecked){ list.get(position).setBo(isChecked); }else{ list.get(position).setBo(isChecked); } } }); //全选 button1.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub for (int i = 0; i < list.size(); i++) { //改变boolean list.get(i).setBo(true); //刷新 notifyDataSetChanged(); } } }); //反选 button2.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub for (int i = 0; i < list.size(); i++) { if(list.get(i).getBo()){ list.get(i).setBo(false); }else{ list.get(i).setBo(true); } notifyDataSetChanged(); } } }); //全不选 button3.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub for (int i = 0; i < list.size(); i++) { list.get(i).setBo(false); notifyDataSetChanged(); } } }); //显示checkBox viewHolder.checkBox.setChecked(list.get(position).getBo()); return convertView; } class ViewHolder{ TextView textView; CheckBox checkBox; } }
时间: 2024-12-20 21:19:45