fragment/androidx.fragment.app.strictmode/FragmentStrictMode

FragmentStrictMode

object FragmentStrictMode(source)

FragmentStrictMode is a tool which detects things you might be doing by accident and brings them to your attention so you can fix them. Basically, it's a version of android.os.StrictMode specifically for fragment-related issues.

You can decide what should happen when a violation is detected. For example, using Policy.Builder.penaltyLog you can watch the output of adb logcat while you use your application to see the violations as they happen.

Types

OnViolationListener

fun interface OnViolationListener

When Policy.Builder.penaltyListener is enabled, the listener is called when a violation occurs.

class Policy

FragmentStrictMode policy applied to a certain FragmentManager (or globally).

Properties

var defaultPolicy: FragmentStrictMode.Policy

The current policy for what actions should be detected, as well as the penalty if such actions occur.

Functions

onFragmentReuse

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onFragmentReuse(fragment: Fragment, previousFragmentId: String)

onFragmentTagUsage

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onFragmentTagUsage(fragment: Fragment, container: ViewGroup?)

onGetRetainInstanceUsage

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onGetRetainInstanceUsage(fragment: Fragment)

onGetTargetFragmentRequestCodeUsage

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onGetTargetFragmentRequestCodeUsage(fragment: Fragment)

onGetTargetFragmentUsage

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onGetTargetFragmentUsage(fragment: Fragment)

onPolicyViolation

@VisibleForTesting

fun onPolicyViolation(violation: Violation)

onSetRetainInstanceUsage

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onSetRetainInstanceUsage(fragment: Fragment)

onSetTargetFragmentUsage

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onSetTargetFragmentUsage(violatingFragment: Fragment, targetFragment: Fragment, requestCode: Int)

onSetUserVisibleHint

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onSetUserVisibleHint(fragment: Fragment, isVisibleToUser: Boolean)

onWrongFragmentContainer

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onWrongFragmentContainer(fragment: Fragment, container: ViewGroup)

onWrongNestedHierarchy

@RestrictTo(value = [RestrictTo.Scope.LIBRARY])

fun onWrongNestedHierarchy(fragment: Fragment, expectedParentFragment: Fragment, containerId: Int)