Android 在listview中选择radiobutton时未选择radiobutton
我在radiogroup中创建了带有两个单选按钮的自定义listview 我的代码getter和setter文件 Item\u radio.javaAndroid 在listview中选择radiobutton时未选择radiobutton,android,listview,radio-group,Android,Listview,Radio Group,我在radiogroup中创建了带有两个单选按钮的自定义listview 我的代码getter和setter文件 Item\u radio.java package com.example.customlistview_radio; public class Item_radio { public boolean isSelected_radio1; public boolean isSelected_radio2; public Item_radio(boolea
package com.example.customlistview_radio;
public class Item_radio
{
public boolean isSelected_radio1;
public boolean isSelected_radio2;
public Item_radio(boolean radio1_status,boolean radio2_status)
{
this.isSelected_radio1=radio1_status;
this.isSelected_radio2=radio2_status;
}
public boolean isSelected_radio1() {
return isSelected_radio1;
}
public void setSelected_radio1(boolean isSelected_radio1) {
this.isSelected_radio1 = isSelected_radio1;
}
public boolean isSelected_radio2() {
return isSelected_radio2;
}
public void setSelected_radio2(boolean isSelected_radio2) {
this.isSelected_radio2 = isSelected_radio2;
}
}
package com.example.customlistview_radio;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.RadioButton;
public class MyRadioAdapter extends BaseAdapter
{
Context context;
List<Item_radio> radioList;
public MyRadioAdapter(Context context,List<Item_radio> radiolist)
{
this.context=context;
this.radioList=new ArrayList<Item_radio>();
this.radioList.addAll(radiolist);
}
@Override
public int getCount() {
return radioList.size();
}
@Override
public Object getItem(int position) {
return radioList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public static class ViewHolder
{
RadioButton radio_button1;
RadioButton radio_button2;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
final ViewHolder holder;
View view = convertView;
if(view==null)
{
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
view = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.radio_button1=(RadioButton)view.findViewById(R.id.my_radio_but1);
holder.radio_button2=(RadioButton)view.findViewById(R.id.my_radio_but2);
view.setTag(holder);
}
else
{
holder = (ViewHolder) view.getTag();
}
if (position % 2 == 1)
{
view.setBackgroundColor(Color.CYAN);
}
else
{
view.setBackgroundColor(Color.WHITE);
}
final Item_radio radio = (Item_radio) getItem(position);
holder.radio_button1.setChecked(radio.isSelected_radio1());
holder.radio_button2.setChecked(radio.isSelected_radio2());
holder.radio_button1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Log.e("button1","Clicked:button1");
RadioButton rb=(RadioButton)v;
radio.setSelected_radio1(rb.isChecked());
Log.e("button1","Clicked:button1:"+rb.isChecked());
}
});
holder.radio_button2.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
RadioButton rb=(RadioButton)v;
Log.e("button2","Clicked:button2"+rb.isChecked());
radio.setSelected_radio2(rb.isChecked());
}
});
return view;
}
}
package com.example.customlistview_radio;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.ListView;
public class MainActivity extends Activity
{
ListView mylist;
Button submit_but;
ArrayList<Item_radio> radio_list;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mylist=(ListView)findViewById(R.id.mylist_demo);
submit_but=(Button)findViewById(R.id.submit_but);
radio_list=new ArrayList<Item_radio>();
for(int i=0;i<20;i++)
{
radio_list.add(new Item_radio(false,false));
}
mylist.setAdapter(new MyRadioAdapter(MainActivity.this, radio_list));
}
}
MyRadioAdapter.java
package com.example.customlistview_radio;
public class Item_radio
{
public boolean isSelected_radio1;
public boolean isSelected_radio2;
public Item_radio(boolean radio1_status,boolean radio2_status)
{
this.isSelected_radio1=radio1_status;
this.isSelected_radio2=radio2_status;
}
public boolean isSelected_radio1() {
return isSelected_radio1;
}
public void setSelected_radio1(boolean isSelected_radio1) {
this.isSelected_radio1 = isSelected_radio1;
}
public boolean isSelected_radio2() {
return isSelected_radio2;
}
public void setSelected_radio2(boolean isSelected_radio2) {
this.isSelected_radio2 = isSelected_radio2;
}
}
package com.example.customlistview_radio;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.RadioButton;
public class MyRadioAdapter extends BaseAdapter
{
Context context;
List<Item_radio> radioList;
public MyRadioAdapter(Context context,List<Item_radio> radiolist)
{
this.context=context;
this.radioList=new ArrayList<Item_radio>();
this.radioList.addAll(radiolist);
}
@Override
public int getCount() {
return radioList.size();
}
@Override
public Object getItem(int position) {
return radioList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public static class ViewHolder
{
RadioButton radio_button1;
RadioButton radio_button2;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
final ViewHolder holder;
View view = convertView;
if(view==null)
{
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
view = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.radio_button1=(RadioButton)view.findViewById(R.id.my_radio_but1);
holder.radio_button2=(RadioButton)view.findViewById(R.id.my_radio_but2);
view.setTag(holder);
}
else
{
holder = (ViewHolder) view.getTag();
}
if (position % 2 == 1)
{
view.setBackgroundColor(Color.CYAN);
}
else
{
view.setBackgroundColor(Color.WHITE);
}
final Item_radio radio = (Item_radio) getItem(position);
holder.radio_button1.setChecked(radio.isSelected_radio1());
holder.radio_button2.setChecked(radio.isSelected_radio2());
holder.radio_button1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Log.e("button1","Clicked:button1");
RadioButton rb=(RadioButton)v;
radio.setSelected_radio1(rb.isChecked());
Log.e("button1","Clicked:button1:"+rb.isChecked());
}
});
holder.radio_button2.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
RadioButton rb=(RadioButton)v;
Log.e("button2","Clicked:button2"+rb.isChecked());
radio.setSelected_radio2(rb.isChecked());
}
});
return view;
}
}
package com.example.customlistview_radio;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.ListView;
public class MainActivity extends Activity
{
ListView mylist;
Button submit_but;
ArrayList<Item_radio> radio_list;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mylist=(ListView)findViewById(R.id.mylist_demo);
submit_but=(Button)findViewById(R.id.submit_but);
radio_list=new ArrayList<Item_radio>();
for(int i=0;i<20;i++)
{
radio_list.add(new Item_radio(false,false));
}
mylist.setAdapter(new MyRadioAdapter(MainActivity.this, radio_list));
}
}
请查看前8行的locat是否正常工作。
当我单击第9行的radiobutton2时,未获得选中的打印检查状态false,但我选择了该按钮,并且在未选中模式下,检查的外观仍然没有更改
我做错什么了吗?
请帮我解决这个问题。
谢谢…您需要稍微更改代码 步骤1: 像这样在适配器中创建HashMap
HashMap<Integer,Integer> selectedItems = new HashMap<Integer, Integer>();
holder.radio_button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e("button1", "Clicked:button1");
RadioButton rb = (RadioButton) v;
radio.setSelected_radio1(rb.isChecked());
radio.setSelected_radio2(!rb.isSelected());
Log.e("button1", "Clicked:button1:" + rb.isChecked());
}
});
holder.radio_button2.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
RadioButton rb=(RadioButton)v;
Log.e("button2","Clicked:button2"+rb.isChecked());
radio.setSelected_radio2(rb.isChecked());
radio.setSelected_radio1(!rb.isSelected());
}
});
步骤3:
仅在单选按钮内单击添加以下内容
if ( selectedItems.get( position ) != null ) {
holder.radio_button1.setChecked(radio.isSelected_radio1()); selectedItems.get( position ) );
}
selectedItems.put( position, your_value);
注:
这里的_值为0或1。如果1表示选择了单选按钮,则0表示未选择
试试这个,如果你遇到任何问题,请告诉我
我只为单选按钮1添加此选项。先试试这个。如果工作正常,则修改单选按钮2
编辑1:
你为什么不像下面这样尝试一下Radiogroup
rg.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
Log.d("chk", "id" + checkedId);
}
});
您需要稍微更改代码 步骤1: 像这样在适配器中创建HashMap
HashMap<Integer,Integer> selectedItems = new HashMap<Integer, Integer>();
holder.radio_button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e("button1", "Clicked:button1");
RadioButton rb = (RadioButton) v;
radio.setSelected_radio1(rb.isChecked());
radio.setSelected_radio2(!rb.isSelected());
Log.e("button1", "Clicked:button1:" + rb.isChecked());
}
});
holder.radio_button2.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
RadioButton rb=(RadioButton)v;
Log.e("button2","Clicked:button2"+rb.isChecked());
radio.setSelected_radio2(rb.isChecked());
radio.setSelected_radio1(!rb.isSelected());
}
});
步骤3:
仅在单选按钮内单击添加以下内容
if ( selectedItems.get( position ) != null ) {
holder.radio_button1.setChecked(radio.isSelected_radio1()); selectedItems.get( position ) );
}
selectedItems.put( position, your_value);
注:
这里的_值为0或1。如果1表示选择了单选按钮,则0表示未选择
试试这个,如果你遇到任何问题,请告诉我
我只为单选按钮1添加此选项。先试试这个。如果工作正常,则修改单选按钮2
编辑1:
你为什么不像下面这样尝试一下Radiogroup
rg.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
Log.d("chk", "id" + checkedId);
}
});
一个有时可以工作,但之后就不行了,这都是因为您在其他代码之前使用了
setChecked
。所以我可以建议你把这些线去掉
holder.radio_button1.setChecked(radio.isSelected_radio1());
holder.radio_button2.setChecked(radio.isSelected_radio2());
更新:如果这损害了您的列表,请执行以下操作
只需在此处颠倒您的逻辑,将收音机设置为选中后,将收音机设置为未选中。您的代码如下所示
HashMap<Integer,Integer> selectedItems = new HashMap<Integer, Integer>();
holder.radio_button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e("button1", "Clicked:button1");
RadioButton rb = (RadioButton) v;
radio.setSelected_radio1(rb.isChecked());
radio.setSelected_radio2(!rb.isSelected());
Log.e("button1", "Clicked:button1:" + rb.isChecked());
}
});
holder.radio_button2.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
RadioButton rb=(RadioButton)v;
Log.e("button2","Clicked:button2"+rb.isChecked());
radio.setSelected_radio2(rb.isChecked());
radio.setSelected_radio1(!rb.isSelected());
}
});
更新2
无论当前发生什么,都是因为您的视图被回收,您可以使用的最后一个选项是,删除此
if(view==null)
条件,并将else
子句与其代码匹配 一个有时有效,但之后无效,这都是因为您在其余代码之前使用了setChecked
。所以我可以建议你把这些线去掉
holder.radio_button1.setChecked(radio.isSelected_radio1());
holder.radio_button2.setChecked(radio.isSelected_radio2());
更新:如果这损害了您的列表,请执行以下操作
只需在此处颠倒您的逻辑,将收音机设置为选中后,将收音机设置为未选中。您的代码如下所示
HashMap<Integer,Integer> selectedItems = new HashMap<Integer, Integer>();
holder.radio_button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.e("button1", "Clicked:button1");
RadioButton rb = (RadioButton) v;
radio.setSelected_radio1(rb.isChecked());
radio.setSelected_radio2(!rb.isSelected());
Log.e("button1", "Clicked:button1:" + rb.isChecked());
}
});
holder.radio_button2.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
RadioButton rb=(RadioButton)v;
Log.e("button2","Clicked:button2"+rb.isChecked());
radio.setSelected_radio2(rb.isChecked());
radio.setSelected_radio1(!rb.isSelected());
}
});
更新2
无论当前发生什么,都是因为您的视图被回收,您可以使用的最后一个选项是,删除此
if(view==null)
条件,并将else
子句与其代码匹配 谢谢你的回答。但问题还是出现了。理解我的问题当我选择radiobutton1或RadioButton2时,radiobutton没有被选中。真正的问题是,每当你滚动列表视图时,就会被回收。这就是问题的原因。因此,您需要保存每行选定值。我希望你能理解,我明白回收利用的观点是主要问题。根据您的建议,如果要保存选定的行值,则首先选择单选按钮。我的问题是当我检查单选按钮时,按钮没有被选中。谢谢你的帮助answer@Amsheer我试过你的答案。问题仍然存在。我用logcat编辑我的问题,请看我的编辑…谢谢你的回答。但问题还是出现了。理解我的问题当我选择radiobutton1或RadioButton2时,radiobutton没有被选中。真正的问题是,每当你滚动列表视图时,就会被回收。这就是问题的原因。因此,您需要保存每行选定值。我希望你能理解,我明白回收利用的观点是主要问题。根据您的建议,如果要保存选定的行值,则首先选择单选按钮。我的问题是当我检查单选按钮时,按钮没有被选中。谢谢你的帮助answer@Amsheer我试过你的答案。问题仍然存在。我用logcat编辑我的问题,请看我的编辑…谢谢你的回答@Shree Krishna。我试试你的建议。如果我在滚动列表视图时这样做,列表视图中的单选按钮会自动被选中。@Asha我更新了我的答案,请看一看。如果出现任何与此相关的错误,请留下评论。我现在正准备明天休假。过一天我会抓到这个的。对不起。。但我认为最后一个选项会解决你的问题,你的代码很好。谢谢@Shree Krishna,当我删除if和else条件时,所有行中的单选按钮都被选中了。但现在我面临滚动问题。我将尝试解决滚动问题。谢谢…这是我的荣幸。。。这不是滚动问题。。。这是因为高CPU消耗。。。这很正常,因为你的任务也很重。。。所以我建议你尽可能减少列表项,而不是试图修复…谢谢你的回答@Shree Krishna。我试试你的建议。如果我在滚动列表视图时这样做,列表视图中的单选按钮会自动被选中。@Asha我更新了我的答案,请看一看。如果出现任何与此相关的错误,请留下评论。我现在正准备明天休假。过一天我会抓到这个的。对不起。。但我认为最后一个选项会解决你的问题,你的代码很好。谢谢@Shree Krishna,当我删除if和else条件时,所有行中的单选按钮都被选中了。但现在我面临滚动问题。我将尝试解决滚动问题。谢谢…这是我的荣幸。。。这不是滚动问题。。。这是因为高CPU消耗。。。这很正常,因为你的任务也很重。。。