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SignalStrengthsListener
interface SignalStrengthsListener
Interface for network signal strengths listener.
Summary
| Public methods |
| abstract Unit |
Callback invoked when network signal strengths changes on the registered subscription.
|
Public methods
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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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10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,["# TelephonyCallback.SignalStrengthsListener\n\nAdded in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nSignalStrengthsListener\n=======================\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/telephony/TelephonyCallback.SignalStrengthsListener \"View this page in Java\") \n\n```\ninterface SignalStrengthsListener\n```\n\n|------------------------------------------------------------------|\n| [android.telephony.TelephonyCallback.SignalStrengthsListener](#) |\n\nInterface for network signal strengths listener.\n\nSummary\n-------\n\n| Public methods ||\n|---------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| abstract [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onSignalStrengthsChanged](#onSignalStrengthsChanged(android.telephony.SignalStrength))`(`signalStrength:` `[SignalStrength](/reference/kotlin/android/telephony/SignalStrength)`)` Callback invoked when network signal strengths changes on the registered subscription. |\n\nPublic methods\n--------------\n\n### onSignalStrengthsChanged\n\nAdded in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nabstract fun onSignalStrengthsChanged(signalStrength: SignalStrength): Unit\n```\n\nCallback invoked when network signal strengths changes on the registered subscription. Note, the registration subscription ID comes from [TelephonyManager](/reference/kotlin/android/telephony/TelephonyManager) object which registers TelephonyCallback by [TelephonyManager.registerTelephonyCallback(Executor, TelephonyCallback)](/reference/kotlin/android/telephony/TelephonyManager#registerTelephonyCallback(java.util.concurrent.Executor,%20android.telephony.TelephonyCallback)). If this TelephonyManager object was created with [TelephonyManager.createForSubscriptionId(int)](/reference/kotlin/android/telephony/TelephonyManager#createForSubscriptionId(kotlin.Int)), then the callback applies to the subscription ID. Otherwise, this callback applies to [SubscriptionManager.getDefaultSubscriptionId()](/reference/kotlin/android/telephony/SubscriptionManager#getDefaultSubscriptionId()).\n\n| Parameters ||\n|------------------|----------------------------------------------------------------------------------------------------|\n| `signalStrength` | [SignalStrength](/reference/kotlin/android/telephony/SignalStrength): This value cannot be `null`. |"]]
