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 > |
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; } } |
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); } } |
希望本文所述对大家Android程序设计有所帮助。