radio-group | 易学教程

RadioGroup calls onCheckChanged() three times

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问题 I've been struggling with an issue of programmatic checking of a RadioButton, which is situated in a RadioGroup. It seems that a single check() call raises three events - once for the first RadioButton and twice for the second, which is my target. At the same time clicking on the second RadioButton in the interface causes only one event to appear, which is correct. So, is there a way to avoid multiple event raising ? public class RadiogroupActivity extends Activity { /** Called when the

AngularJs: How to set radio button checked based on model

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问题 I have a model returning in the storeLocations object with a isDefault value. if isDefault returns true, I wan't to set that radio button in the group as checked. Not sure if I need to do a $each(data, function(index,value) and iterate through each object returned or if there's an easier way to do this using angular constructs. Object: storeLocations = [ { ... more values, isDefault: true } ] Markup: <tr ng-repeat="location in merchant.storeLocations"> <td>{{location.name}}</td> <td>{

Multiple radio button groups in one form

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Is it possible to have multiple radio button groups in a single form? Usually selecting one button deselects the previous, I just need to have one of a group deselected. <form> <fieldset id="group1"> <input type="radio" value=""> <input type="radio" value=""> </fieldset> <fieldset id="group2"> <input type="radio" value=""> <input type="radio" value=""> <input type="radio" value=""> </fieldset> </form> pankijs Set equal name attributes to create a group; <form> <fieldset id="group1"> <input type="radio" value="value1" name="group1"> <input type="radio" value="value2" name="group1"> </fieldset>

RadioGroup with two columns which have ten RadioButtons

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I have a RadioGroup and I want to align buttons next to each other in two columns and five rows and I am unable to achieve it. Things I have tried: RelativeLayout -> Outside RadioGroup -> Inside RadioGroup . All RadioButtons are selected, but I want only one to be selected. RadioGroup : orientation Span, stretchcolumns TableRow TableLayout Please let me know how create one RadioGroup and have two columns and many RadioButtons within. You can simulate that RadioGroup to make it look like you have only one. For example you have rg1 and rg2 ( RadioGroups with orientation set to vertical (the two

Get the array of RadioButtons in a RadioGroup in Android

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问题 Is there any way of getting an array (or a collection) of the RadioButton s in an Android RadioGroup ? I would like to add individual listeners to radio buttons but I don't see any obvious way of iterating over them. 回答1: this should do the trick: int count = radioGroup.getChildCount(); ArrayList<RadioButton> listOfRadioButtons = new ArrayList<RadioButton>(); for (int i=0;i<count;i++) { View o = radioGroup.getChildAt(i); if (o instanceof RadioButton) { listOfRadioButtons.add((RadioButton)o);

Android: RadioGroup - How to configure the event listener

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From my understanding, to determine if a checkbox is "clicked" and find if it's checked or not, code such as the following can be used: cb=(CheckBox)findViewById(R.id.chkBox1); cb.setOnCheckedChangeListener(this); public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { cb.setText("This checkbox is: checked"); } else { cb.setText("This checkbox is: unchecked"); } } However, I am unable to work out the logic on how to do the above for a radiogroup. Here is the xml for my RadioGroup: <RadioGroup android:id="@+id/radioGroup1" android:layout_width="wrap_content

How to check if a radiobutton is checked in a radiogroup in Android?

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问题 I need to set validation that user must fill / select all details in a page. If any fields are empty wanna show Toast message to fill. Now I need set validation for RadioButton in the RadioGroup. I tried this code but didn't work properly. Suggest me correct way. Thankyou. // get selected radio button from radioGroup int selectedId = gender.getCheckedRadioButtonId(); // find the radiobutton by returned id selectedRadioButton = (RadioButton)findViewById(selectedId); // do what you want with

Multiple radio button groups in MVC 4 Razor

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问题 I need to have multiple radio button groups in my form like this: I know it's simply done by specifying the same " name " html attribute for each group. HOWEVER MVC doesn't let you specify your own name attribute when using html helper like this: @Html.RadioButtonFor(i => item.id, item.SelectedID, new { Name = item.OptServiceCatId }) Because it looks at each tag's " name " attribute (not " id ") to map/bind the form to the model which the controller receives, etc. Some said that specifying

RadioGroup with two columns which have ten RadioButtons

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问题 I have a RadioGroup and I want to align buttons next to each other in two columns and five rows and I am unable to achieve it. Things I have tried: RelativeLayout -> Outside RadioGroup -> Inside RadioGroup . All RadioButtons are selected, but I want only one to be selected. RadioGroup : orientation Span, stretchcolumns TableRow TableLayout Please let me know how create one RadioGroup and have two columns and many RadioButtons within. 回答1: You can simulate that RadioGroup to make it look like

Android: RadioGroup - How to configure the event listener

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问题 From my understanding, to determine if a checkbox is \"clicked\" and find if it\'s checked or not, code such as the following can be used: cb=(CheckBox)findViewById(R.id.chkBox1); cb.setOnCheckedChangeListener(this); public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { cb.setText(\"This checkbox is: checked\"); } else { cb.setText(\"This checkbox is: unchecked\"); } } However, I am unable to work out the logic on how to do the above for a radiogroup.