本文实例讲述了Android编程之listView中checkbox用法。分享给大家供大家参考,具体如下:
我们经常会用到在listView中使用checkbox的情况。直接不回应用后会发现,ListView中的OnItemClickListener事件会和checkbox中的选择事件发生冲突,这个怎么处理呢。直接上代码。
list_item.xml代码:
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<? 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"
android:background = "@color/color_while" >
< TextView
android:id = "@+id/txt_add_note_tag_list_name"
android:layout_height = "50dp"
android:layout_width = "fill_parent"
android:gravity = "center_vertical"
android:textColor = "@color/color_black"
android:layout_marginLeft = "8dp"
/>
< CheckBox
android:id = "@+id/chk_add_note_tag_list_chk"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:gravity = "center_vertical"
android:layout_alignParentRight = "true"
android:layout_marginRight = "8dp"
android:focusable = "false" <!--这个是必须加上的,不然会出现冲突-->
android:clickable="false" <!--这个是必须加上的,不然会出现冲突-->
/>
</ RelativeLayout >
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BaseAdapter.java代码:
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package cg.guangda.androidnote;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import cg.guangda.androidnote.Model.noteTag;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.TextView;
public class Add_note_tag_list_BaseAdapter extends BaseAdapter {
private LayoutInflater inflater;
private List<noteTag> list_notetag_date;
//定义多选框是否被选中
public static Map<Integer, Boolean> isSelected;
public Add_note_tag_list_BaseAdapter(Context context,List<noteTag> list_notetag_date)
{
this .inflater = LayoutInflater.from(context);
this .list_notetag_date = list_notetag_date;
//这儿定义isSelected这个map是记录每个listitem的状态,初始状态全部为false。
isSelected = new HashMap<Integer, Boolean>();
for ( int i = 0 ; i < list_notetag_date.size(); i++) {
isSelected.put(i, false );
}
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return list_notetag_date.size();
}
@Override
public Object getItem( int position) {
// TODO Auto-generated method stub
return list_notetag_date.get(position);
}
@Override
public long getItemId( int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView( int position, View convertView, ViewGroup parent) {
add_note_noteTag notetag = null ;
if (convertView== null )
{
convertView = inflater.inflate(R.layout.add_note_tag_list_item, null );
notetag = new add_note_noteTag();
notetag.txt_add_note_tag_list_name = (TextView)convertView.findViewById(R.id.txt_add_note_tag_list_name);
notetag.chk_add_note_tag_list_chk = (CheckBox)convertView.findViewById(R.id.chk_add_note_tag_list_chk);
convertView.setTag(notetag);
}
else {
notetag = (add_note_noteTag)convertView.getTag();
}
notetag.txt_add_note_tag_list_name.setText(list_notetag_date.get(position).get_tagName());
notetag.chk_add_note_tag_list_chk.setChecked(isSelected.get(position));
return convertView;
}
public class add_note_noteTag
{
TextView txt_add_note_tag_list_name;
CheckBox chk_add_note_tag_list_chk;
}
}
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应用页面:
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list_popwin_note_tag.setAdapter( new Add_note_tag_list_BaseAdapter( this , list_noteTag_date));
list_popwin_note_tag.setOnItemClickListener( new noteTagListItemOnClickListener());
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/**
* 点击列表项事件
* @author cg
*
*/
class noteTagListItemOnClickListener implements OnItemClickListener{
@Override
public void onItemClick(AdapterView<?> arg0, View view, int position,
long arg3) {
// TODO Auto-generated method stub
add_note_noteTag vHollder = (add_note_noteTag) view.getTag();
//在每次获取点击的item时将对于的checkbox状态改变,同时修改map的值。
vHollder.chk_add_note_tag_list_chk.setChecked(vHollder.chk_add_note_tag_list_chk.isChecked()== true ? false : true );
boolean check = vHollder.chk_add_note_tag_list_chk.isChecked();
Add_note_tag_list_BaseAdapter.isSelected.put(position, check);
Log.v( "noteTagListItemOnClickListener" , list_noteTag_date.get(position).get_tagName() + check);
}
}
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希望本文所述对大家Android程序设计有所帮助。