commit | b69fe340ccf37160705e6d7dc512b814fd6bb100 | [log] [tgz] |
---|---|---|
author | Ian Lake <[email protected]> | Tue Nov 29 00:46:05 2022 +0000 |
committer | Ian Lake <[email protected]> | Tue Nov 29 01:00:44 2022 +0000 |
tree | 0debc4881a962f19b702e6bcb402bbdac7831019 | |
parent | bdeeec3c932626cb530feabc3a2df03071379f4c [diff] |
Add API to check if LiveData has a value For LiveData that support null values (e.g., a LiveData<String?>, liveData.value might return null if an explicit value of null has been set or if no value has ever been set with no way to tell them apart. By adding an API to LiveData to know whether a value has ever been set, developers can distinguish between these two cases and ensure that the null they get from liveData.value has come from an explicitly set value. Test: new test passes BUG: 180450267 BUG: 214434197 Relnote: "LiveData now includes a new `isInitialized` property that indicates whether an explicit value has ever been set on the LiveData, allowing you to distinguish between `liveData.value` returning `null` because no value has ever been set or an explicit `null` value." Change-Id: Ibd01803e2ee34a7cd4854438e5562fea473afad0
Jetpack is a suite of libraries, tools, and guidance to help developers write high-quality apps easier. These components help you follow best practices, free you from writing boilerplate code, and simplify complex tasks, so you can focus on the code you care about.
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