下面是JAVA代码package com.example.androidlistview;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import android.os.Bundle;
import android.app.ListActivity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.SimpleAdapter;public class MainActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map1 = new HashMap<String, String>();
HashMap<String, String> map2 = new HashMap<String, String>();
HashMap<String, String> map3 = new HashMap<String, String>();
map1.put("user_name", "zhangsan");
map1.put("user_ip", "192.168.0.1");
map2.put("user_name", "lisi");
map2.put("user_ip", "192.168.0.2");
map3.put("user_name", "wangwu");
map3.put("user_ip", "192.168.0.3");
list.add(map1);
list.add(map2);
list.add(map3);
MyAdapter listAdapter = new MyAdapter(this, list,
R.layout.user, new String[] { "user_name", "user_ip",},
new int[] { R.id.user_name,R.id.user_ip});
setListAdapter(listAdapter);
ListView lv = getListView();
lv.setChoiceMode(TRIM_MEMORY_COMPLETE);
} protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
}
class MyAdapter extends SimpleAdapter {
private LayoutInflater inflater = null;
private List<Map<String,Object>> styles = null;
public List<Map<String, Object>> getStyles() {
return styles;
} public void setStyles(List<Map<String, Object>> styles) {
this.styles = styles;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View result = super.getView(position, convertView, parent);
System.out.println("positon---->" + position);
if(result != null){
inflater.inflate(R.layout.user, null);
}
return result;
} public MyAdapter(Context context, List<? extends Map<String, ?>> data,
int resource, String[] from, int[] to) {
super(context, data, resource, from, to);
inflater = LayoutInflater.from(context);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}}
---------------------------------------------------
下面是XML文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="horizontal" android:paddingLeft="10dip"
android:paddingRight="10dip" android:paddingTop="1dip"
android:paddingBottom="1dip">
<TextView android:id="@+id/user_name"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:textSize="5pt"
android:layout_weight="1"
android:singleLine="true" />
<TextView android:id="@+id/user_ip"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:textSize="5pt" />
<CheckedTextView
android:id="@+id/ctv"
android:checkMark="?android:attr/listChoiceIndicatorSingle"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="right"
android:textSize="5pt"/>
</LinearLayout>为什么我点击ListView以后无法选中,改变按钮的状态。求各位老师帮忙解决一下。非常感谢
import java.util.HashMap;
import java.util.List;
import java.util.Map;import android.os.Bundle;
import android.app.ListActivity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.SimpleAdapter;public class MainActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map1 = new HashMap<String, String>();
HashMap<String, String> map2 = new HashMap<String, String>();
HashMap<String, String> map3 = new HashMap<String, String>();
map1.put("user_name", "zhangsan");
map1.put("user_ip", "192.168.0.1");
map2.put("user_name", "lisi");
map2.put("user_ip", "192.168.0.2");
map3.put("user_name", "wangwu");
map3.put("user_ip", "192.168.0.3");
list.add(map1);
list.add(map2);
list.add(map3);
MyAdapter listAdapter = new MyAdapter(this, list,
R.layout.user, new String[] { "user_name", "user_ip",},
new int[] { R.id.user_name,R.id.user_ip});
setListAdapter(listAdapter);
ListView lv = getListView();
lv.setChoiceMode(TRIM_MEMORY_COMPLETE);
} protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
}
class MyAdapter extends SimpleAdapter {
private LayoutInflater inflater = null;
private List<Map<String,Object>> styles = null;
public List<Map<String, Object>> getStyles() {
return styles;
} public void setStyles(List<Map<String, Object>> styles) {
this.styles = styles;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View result = super.getView(position, convertView, parent);
System.out.println("positon---->" + position);
if(result != null){
inflater.inflate(R.layout.user, null);
}
return result;
} public MyAdapter(Context context, List<? extends Map<String, ?>> data,
int resource, String[] from, int[] to) {
super(context, data, resource, from, to);
inflater = LayoutInflater.from(context);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}}
---------------------------------------------------
下面是XML文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="horizontal" android:paddingLeft="10dip"
android:paddingRight="10dip" android:paddingTop="1dip"
android:paddingBottom="1dip">
<TextView android:id="@+id/user_name"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:textSize="5pt"
android:layout_weight="1"
android:singleLine="true" />
<TextView android:id="@+id/user_ip"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:textSize="5pt" />
<CheckedTextView
android:id="@+id/ctv"
android:checkMark="?android:attr/listChoiceIndicatorSingle"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="right"
android:textSize="5pt"/>
</LinearLayout>为什么我点击ListView以后无法选中,改变按钮的状态。求各位老师帮忙解决一下。非常感谢
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// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
map.put("isChecked","1");
listAdapter.notifydatasetchanged();
} public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View result = super.getView(position, convertView, parent);
System.out.println("positon---->" + position);
if(result != null){
inflater.inflate(R.layout.user, null);
final CheckedTextView ctv = (CheckedTextView)findViewById(R.id.ctv);
if(null != map.get("isChecked")&&"1".equals(map.get("isChecked"))){
ctv.setChecked(true);
}
}
return result;
}
你的逻辑都没有设置onclick改变check的事件,当然不会改了。
试试吧,我没用过CheckedTextView 一般都用radiobutton。
能说下下面的代码是什么意思?刚开始接触。map是独立的一个MAP还是一开始加入的参数时用的MAP
map.put("isChecked","1");
listAdapter.notifydatasetchanged();
map.put("isChecked","1");
这个相当于哪个被点了就在哪个map中加入
应该稍作修改,改成list.get(position).put("isChecked","1");listAdapter.notifydatasetchanged();
刷新listview