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Android 14 と Predictive back gesture / Shibuya...
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May 26, 2023
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Android 14 と Predictive back gesture / Shibuya.apk #42
star_zero
May 26, 2023
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Transcript
@STAR_ZERO Shibuya.apk #42 2023/05/26 Android 14 と Predictive back gesture
https://developer.android.com/guide/navigation/predictive-back-gesture
• Android 13で導入 • ホームに戻ることが予測できるようなアニメーション • Opt-inが必要 • 端末の開発者向けオプションで設定が必要 •
AndroidXライブラリの使用が推奨 ◦ KEYCODE_BACK と onBackPressed は使用しない Predictive back gesture
• アプリ全体でのOpt-inではなく、Activity単位で可能に • Activity間のアニメーション • 新しいAPIが追加され、カスタムアニメーションが可能に • 一部 Material Component
が対応 Android 14での新機能
Activity単位のOpt-in <manifest> <application <activity android:name=".MainActivity"> <!-- ... --> </activity> <!--
このActivityだけ Predicitive back gesture を有効にする --> <activity android:name=".SampleActivity" android:enableOnBackInvokedCallback="true" /> </application> </manifest>
Activity間のアニメーション https://developer.android.com/about/versions/14/features/predictive-back
新しいAPI (androidx.activity 1.8.0-alpha01 から) val callback = object : OnBackPressedCallback(true)
{ override fun handleOnBackPressed() { } override fun handleOnBackProgressed(backEvent: BackEvent) { // gestureの進捗 } override fun handleOnBackCancelled() { // キャンセルされたとき } override fun handleOnBackStarted(backEvent: BackEvent) { // gestureが始まったとき } }
Material Component対応 (Viewシステム)
• https://developer.android.com/guide/navigation/predictive-ba ck-gesture • https://developer.android.com/about/versions/14/features/pre dictive-back • https://github.com/material-components/material-componen ts-android/blob/master/docs/foundations/PredictiveBack.md Appendix
ありがとうございました