本文共 5586 字,大约阅读时间需要 18 分钟。
自己手机是华为的,里面有一个安全卫士的安装包管理的功能用的就是含有CheckBOX 的listview控件实现全选全不选的功能,不过自己手机中的可以实现部分选中在界面响应,自己只实现了全选、全不选的功能,部分选中还有待研究。
一下是代码:贴出来方便自己记忆
package com.example.listviewcheckboxdemo;
import java.util.ArrayList;
import java.util.List;import com.example.listviewcheckboxdemo.R.layout;
import android.os.Bundle;
import android.app.Activity; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.ListView;public class MainActivity extends Activity {
private ListView lv; private ListViewAda adapter; private List<Person> lists = new ArrayList<Person>(); private View v; private String title="清除列表"; private Button cleanBtn; private CheckBox checked; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView();}
private void initView() {
lv = (ListView) findViewById(R.id.listView1); fillDataforListView(); adapter=new ListViewAda(lists,this); v = getLayoutInflater().inflate(R.layout.footer_content, null); cleanBtn = (Button) v.findViewById(R.id.button1); cleanBtn.setEnabled(false); cleanContent(cleanBtn, title); checked = (CheckBox) v.findViewById(R.id.checkBox1); locationCheckedstate();checked.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if(isChecked){ adapter.isAllChecked(true); Log.e("result", "地步checkbox被选中"); adapter.notifyDataSetChanged(); cleanBtn.setText(title+lists.size()); cleanBtn.setEnabled(true); }else{ adapter.isAllChecked(false); adapter.notifyDataSetChanged(); cleanBtn.setText(title); cleanBtn.setEnabled(false); } } });Log.e("result","========================="+ lists.size());
if(lists.size()>0){ addFooterView(); } lv.setAdapter(adapter); adapter.notifyDataSetChanged(); }private void cleanContent(Button btn, String title) {
btn.setText(title); btn.setOnClickListener(new MyListener()); }class MyListener implements OnClickListener {
@Override
public void onClick(View v) { lists.clear(); adapter.notifyDataSetChanged(); Log.e("result", "数据被清楚===="+lists.size()); }}
private void addFooterView() {
lv.addFooterView(v); }private void fillDataforListView() {
for (int i = 0; i < 5; i++) { String name = "per" + i; Person p = new Person(name, 23 + i); lists.add(p); } }@Override
public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } private void locationCheckedstate(){ Log.e("re", "------------adapter.isContentChecked()-------------"+adapter.isContentChecked()); if(adapter.isContentChecked()>0&&adapter.isContentChecked()<lists.size()){ cleanBtn.setEnabled(true); checked.setChecked(false); }else if(adapter.isContentChecked()==lists.size()){ cleanBtn.setEnabled(true); checked.setChecked(true); } cleanBtn.setText(title+"("+adapter.isContentChecked()+")"); adapter.notifyDataSetChanged(); } }
适配器中的代码:
package com.example.listviewcheckboxdemo;
import java.util.ArrayList;
import java.util.List;import android.content.Context;
import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.TextView;public class ListViewAda extends BaseAdapter {
private List<Person>lists=new ArrayList<Person>(); private LayoutInflater inflater; boolean isCheckedItem=false; private Context context; private List<Person>CheckedItems=new ArrayList<Person>();public ListViewAda(List<Person> lists,Context context) {
super(); this.lists = lists; this.context=context; this.inflater = inflater.from(context); }@Override
public int getCount() { if(lists.size()>0) return lists.size(); return 0; }@Override
public Object getItem(int position) { return lists.get(position); }@Override
public long getItemId(int position) { return position; }@Override
public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder vh=null; if(convertView==null){ vh=new ViewHolder(); convertView=inflater.inflate(R.layout.ada_layput, null); vh.tv_name=(TextView) convertView.findViewById(R.id.textView1); vh.tv_age=(TextView) convertView.findViewById(R.id.textView2); vh.cb=(CheckBox) convertView.findViewById(R.id.checkBox1); convertView.setTag(vh); } vh=(ViewHolder) convertView.getTag(); vh.tv_name.setText(lists.get(position).getName()); vh.tv_age.setText(Integer.toString(lists.get(position).getAge()).toString()); vh.cb.setChecked(isCheckedItem); vh.cb.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if(isChecked) { CheckedItems.add(lists.get(position)); }else if(!isChecked){ CheckedItems.remove(lists.get(position)); } }});
return convertView; } class ViewHolder{ TextView tv_name,tv_age; CheckBox cb; } //是否全选 public void isAllChecked(boolean isChecked){ isCheckedItem=isChecked; notifyDataSetChanged(); } int isContentChecked(){ Log.e("result", "被选中的个个数="+CheckedItems.size()); if(CheckedItems.size()>0)return CheckedItems.size(); return 0; } }
布局:
布局都很简单,主布局就一个listview控件,尾部布局就一个按钮和一个checkbox控件,就不贴了,
代码下载地址:
转载地址:http://fezpi.baihongyu.com/