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Merge pull request #706 from arkivanov/merge-v3.0
Merge v3.0
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decompose/src/androidMain/kotlin/com/arkivanov/decompose/DeeplinkUtils.kt
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| @@ -0,0 +1,87 @@ | ||
| package com.arkivanov.decompose | ||
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| import android.app.Activity | ||
| import android.app.TaskStackBuilder | ||
| import android.content.Intent | ||
| import android.net.Uri | ||
| import android.os.Bundle | ||
| import androidx.core.os.bundleOf | ||
| import androidx.savedstate.SavedStateRegistryOwner | ||
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| /** | ||
| * Extracts a deep link URL from this [Activity] [Intent], calls [block] | ||
| * function with the extracted deep link URL (if any) and returns the result. | ||
| * | ||
| * This function must be called from [Activity.onCreate] method. | ||
| * | ||
| * It is strongly recommended to always use the `standard` (default) | ||
| * `launchMode` for the [Activity] when handling deep links. This function takes | ||
| * care of restarting the [Activity] task and finishing this [Activity] if needed, | ||
| * in which case the returned value is `null`. | ||
| * | ||
| * Example of creating a root component with deep link support. | ||
| * | ||
| * ```kotlin | ||
| * class MainActivity : AppCompatActivity() { | ||
| * override fun onCreate(savedInstanceState: Bundle?) { | ||
| * super.onCreate(savedInstanceState) | ||
| * | ||
| * val root = | ||
| * handleDeepLink { uri -> | ||
| * val itemId = uri?.extractItemId() // Parse the deep link | ||
| * DefaultRootComponent( | ||
| * componentContext = defaultComponentContext(discardSavedState = itemId != null), | ||
| * itemId = itemId, | ||
| * ) | ||
| * } ?: return | ||
| * | ||
| * // Display the root component as usual | ||
| * } | ||
| * | ||
| * private fun Uri.extractItemId(): String? = | ||
| * TODO("Extract item id from the deep link") | ||
| * } | ||
| * ``` | ||
| */ | ||
| @ExperimentalDecomposeApi | ||
| fun <A, T : Any> A.handleDeepLink( | ||
| block: (Uri?) -> T, | ||
| ): T? where A : Activity, A : SavedStateRegistryOwner { | ||
| if (restartIfNeeded()) { | ||
| return null | ||
| } | ||
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| val savedState: Bundle? = savedStateRegistry.consumeRestoredStateForKey(key = KEY_SAVED_DEEP_LINK_STATE) | ||
| val isDeepLinkHandled = savedState?.getBoolean(KEY_DEEP_LINK_HANDLED) ?: false | ||
| val deepLink = intent.data.takeUnless { isDeepLinkHandled } | ||
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| savedStateRegistry.registerSavedStateProvider(key = KEY_SAVED_DEEP_LINK_STATE) { | ||
| bundleOf(KEY_DEEP_LINK_HANDLED to (isDeepLinkHandled || (deepLink != null))) | ||
| } | ||
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| return block(deepLink) | ||
| } | ||
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| // Derived from https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:navigation/navigation-runtime/src/main/java/androidx/navigation/NavController.kt;l=1486;drc=fd7d0dc4a56c2aef65424db7986aa057f9717661 | ||
| private fun Activity.restartIfNeeded(): Boolean { | ||
| if ((intent.flags and Intent.FLAG_ACTIVITY_NEW_TASK == 0) || (intent.flags and Intent.FLAG_ACTIVITY_CLEAR_TASK != 0)) { | ||
| return false | ||
| } | ||
|
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| // Someone called us with NEW_TASK, but we don't know what state our whole | ||
| // task stack is in, so we need to manually restart the whole stack to | ||
| // ensure we're in a predictably good state. | ||
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| intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK) | ||
| TaskStackBuilder.create(this).addNextIntentWithParentStack(intent).startActivities() | ||
| finish() | ||
| // Disable second animation in case where the Activity is created twice. | ||
| @Suppress("DEPRECATION") | ||
| overridePendingTransition(0, 0) | ||
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| return true | ||
| } | ||
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| private const val KEY_SAVED_DEEP_LINK_STATE = "SAVED_DEEP_LINK_STATE" | ||
| private const val KEY_DEEP_LINK_HANDLED = "DEEP_LINK_HANDLED" | ||
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