conradchen b51692da7d [Transition] Fix NPE when removing window background ...

Null background is a totally valid state. Handles the nullness to prevent NPE from happening.

Resolves https://github.com/material-components/material-components-android/issues/2309

PiperOrigin-RevId: 386081632

2021-07-22 11:55:11 -04:00

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platform

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res/values

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res-public/values

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FadeModeEvaluator.java

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FadeModeEvaluators.java

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FadeModeResult.java

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FadeProvider.java

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FadeThroughProvider.java

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FitModeEvaluator.java

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FitModeEvaluators.java

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FitModeResult.java

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Hold.java

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MaskEvaluator.java

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MaterialArcMotion.java

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MaterialContainerTransform.java

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MaterialElevationScale.java

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MaterialFade.java

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MaterialFadeThrough.java

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MaterialSharedAxis.java

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MaterialVisibility.java

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ScaleProvider.java

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SlideDistanceProvider.java

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TransitionListenerAdapter.java

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TransitionUtils.java

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VisibilityAnimatorProvider.java

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