ConstraintsChangedListener

Kotlin |Java

abstract class ConstraintsChangedListener

Added in 2.0

Callbacks on state change

Summary

Public constructors
`ConstraintsChangedListener()`

Public functions
`Unit`	`postLayoutChange(stateId: Int, constraintId: Int)` called after layout happens
`Unit`	`preLayoutChange(stateId: Int, constraintId: Int)` called before layout happens

Added in 2.2.0-alpha13

ConstraintsChangedListener()

fun postLayoutChange(stateId: Int, constraintId: Int): Unit

called after layout happens

Parameters
`stateId: Int`	-1 if state unknown, otherwise the current state
`constraintId: Int`	the current constraintSet id we transitioned to

fun preLayoutChange(stateId: Int, constraintId: Int): Unit

called before layout happens

Parameters
`stateId: Int`	-1 if state unknown, otherwise the state we will transition to
`constraintId: Int`	the constraintSet id that we will transition to