oncheckedchanged | 易学教程

Android - programmatically change the state of a switch without triggering OnCheckChanged listener

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问题 I'm looking for a method of programmatically changing the state of an Android Switch widget using switch.setChecked(true); without triggering OnCheckedChangedlistener . My first thought was to swap it out for an OnClickListener but as this only registers clicks and you are able to not only click but also slide a Switch then it's not really fit for purpose as if the user was to slide the Switch from off to on then the Switch would actually do nothing as the user is not clicking... If anyone's

Android - programmatically change the state of a switch without triggering OnCheckChanged listener

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Android: When using setOnCheckedChangeListener on switches I get 'Cannot Resolve Symbol Error'

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问题 package com.example.koustav.myapplication; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Switch; import android.widget.TextView; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } Switch swi = (Switch)

Android: When using setOnCheckedChangeListener on switches I get 'Cannot Resolve Symbol Error'

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给gridview动态生成radiobutton添加OnCheckedChanged事件

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 在写研究生系统审核功能的时候，有一个页面的gridview动态生成四列radiobutton，在gridview控件外有四个radiobutton分别控制这四列的全选中。那么当外面的某个全选按钮选中后，改变gridview里面的radiobutton选择，对应的全选按钮选中情况应该发生变化。为了实现该功能，需要在写好了radiobutton的OnCheckedChanged监听函数并添加到aspx页面后，再在gridview的RowDataBound事件中加入声明。 aspx页面部分代码： <asp:TemplateField HeaderText="学位类别" SortExpression="gdxw"> <ItemTemplate> <%# Eval("gdxw")%></ItemTemplate> <ItemStyle HorizontalAlign="Center" /> </asp:TemplateField> <asp:TemplateField HeaderText="同意" SortExpression="xwkyqxf"> <ItemTemplate> <asp:RadioButton ID="TySy" runat="server" GroupName="bjyj" AutoPostBack

In asp.net, page_load occuring before radio button OnCheckedChanged event

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问题 I have two radio button on my asp.net page, with AutoPostBack = True When I click on either of those, they each set a flag SaveData=False However, when I click on them, the page_load event occurs first, so the page_load event saves the data, then the radiobutton_OnCheckedChanged event is triggered. How can I trigger the OnCheckedChanged before the page_load event? 回答1: You can't trigger the OnCheckedChanged before radiobutton_OnCheckedChanged because that's the normal page life cycle. You can

How to disable checkbox when a limit is reached in android?

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问题 I have 15 CheckBox and I must to stuck user when he checks more than 5. I use the method OnCheckedChangeListener to know if an item is checked, but I don't know how to limit after 5 items selected . See my code below: int lengthBox = 15; int lenghtCount = 0; // inside onCreate method final CheckBox[] checkbox = new CheckBox[lengthBox]; OnCheckedChangeListener checker = new OnCheckedChangeListener(){ @Override public void onCheckedChanged(CompoundButton cb, boolean b) { // How can I improve

Android radio group onCheckChangedListener crashing app

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问题 Any idea why this would crash my app when I select a radio button? I've imported android.widget.RadioGroup.OnCheckedChangeListener , and I've also tried new RadioGroup.OnCheckedChangeListener() which was the solution to a similar post. The code is (logcat added): RadioGroup ringtone_radio_group = (RadioGroup)findViewById(R.id.ringtone_radio_group); ringtone_radio_group.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int

listview with edittext ,checkbox and textView in android

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问题 i have created a listview with checkbox,edittext and textview. data is populated in listview with sql server. but i am not being able to use onCheckedChangedListener on checkbox. so that on clicking the checkbox corresponding data of textview and edittext is not being saved.. i know i am doing mistake somewhere in my adapter class.. How to save data and what logic should i use in onCheckedChangedListener in my adapter class? code for pojo class public class Model { public String name="";

OnCheckedChanged Nested Listview Controls

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问题 I have the following nested listview... <asp:ListView ID="lvwRiskQuestions" runat="server" ItemPlaceholderID="QuestionItemPlaceholder"> <LayoutTemplate> <asp:PlaceHolder ID="QuestionItemPlaceholder" runat="server" /> </LayoutTemplate> <ItemTemplate> <%# Eval("DESCRIPTION")%> <asp:ListView ID="lvwAnswers" runat="server" ItemPlaceholderID="AnswerItemPlaceholder" DataSource='<%# Eval("Answers")%>'> <LayoutTemplate> <asp:PlaceHolder ID="AnswerItemPlaceholder" runat="server" /> </LayoutTemplate>