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OnCheckedChangeListener
interface OnCheckedChangeListener
Interface definition for a callback to be invoked when the checked radio button changed in this group.
Summary
| Public methods |
| abstract Unit |
Called when the checked radio button has changed.
|
Public methods
onCheckedChanged
abstract fun onCheckedChanged(
group: RadioGroup,
checkedId: Int
): Unit
Called when the checked radio button has changed. When the selection is cleared, checkedId is -1.
| Parameters |
group |
RadioGroup: the group in which the checked radio button has changed This value cannot be null. |
checkedId |
Int: the unique identifier of the newly checked radio button |
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Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# RadioGroup.OnCheckedChangeListener\n\nAdded in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nOnCheckedChangeListener\n=======================\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/widget/RadioGroup.OnCheckedChangeListener \"View this page in Java\") \n\n```\ninterface OnCheckedChangeListener\n```\n\n|--------------------------------------------------------|\n| [android.widget.RadioGroup.OnCheckedChangeListener](#) |\n\nInterface definition for a callback to be invoked when the checked radio button changed in this group.\n\nSummary\n-------\n\n| Public methods ||\n|---------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| abstract [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onCheckedChanged](#onCheckedChanged(android.widget.RadioGroup,%20kotlin.Int))`(`group:` `[RadioGroup](/reference/kotlin/android/widget/RadioGroup)`, `checkedId:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Called when the checked radio button has changed. |\n\nPublic methods\n--------------\n\n### onCheckedChanged\n\nAdded in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nabstract fun onCheckedChanged(\n group: RadioGroup, \n checkedId: Int\n): Unit\n```\n\nCalled when the checked radio button has changed. When the selection is cleared, checkedId is -1.\n\n| Parameters ||\n|-------------|-------------------------------------------------------------------------------------------------------------------------------------------------|\n| `group` | [RadioGroup](/reference/kotlin/android/widget/RadioGroup): the group in which the checked radio button has changed This value cannot be `null`. |\n| `checkedId` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html): the unique identifier of the newly checked radio button |"]]
