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Compose Firebase Dynamic Links (#1477)
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143 changes: 143 additions & 0 deletions
143
...pp/src/main/java/com/google/firebase/quickstart/deeplinks/kotlin/DynamicLinksViewModel.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,143 @@ | ||
| package com.google.firebase.quickstart.deeplinks.kotlin | ||
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| import android.content.Intent | ||
| import android.net.Uri | ||
| import android.util.Log | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.ViewModelProvider | ||
| import androidx.lifecycle.viewModelScope | ||
| import androidx.lifecycle.viewmodel.CreationExtras | ||
| import com.google.firebase.dynamiclinks.FirebaseDynamicLinks | ||
| import com.google.firebase.dynamiclinks.PendingDynamicLinkData | ||
| import com.google.firebase.dynamiclinks.ktx.androidParameters | ||
| import com.google.firebase.dynamiclinks.ktx.dynamicLink | ||
| import com.google.firebase.dynamiclinks.ktx.dynamicLinks | ||
| import com.google.firebase.dynamiclinks.ktx.shortLinkAsync | ||
| import com.google.firebase.ktx.Firebase | ||
| import kotlinx.coroutines.flow.MutableStateFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.coroutines.tasks.await | ||
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| class DynamicLinksViewModel( | ||
| private val dynamicLinks: FirebaseDynamicLinks | ||
| ): ViewModel() { | ||
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| private val _deepLink = MutableStateFlow("") | ||
| val deepLink: StateFlow<String> = _deepLink | ||
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| private val _shortLink = MutableStateFlow("") | ||
| val shortLink: StateFlow<String> = _shortLink | ||
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| private val _validUriPrefix = MutableStateFlow(true) | ||
| val validUriPrefix: StateFlow<Boolean> = _validUriPrefix | ||
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| fun getDynamicLink(intent: Intent) { | ||
| viewModelScope.launch { | ||
| try { | ||
| val pendingDynamicLinkData: PendingDynamicLinkData = dynamicLinks | ||
| .getDynamicLink(intent) | ||
| .await() | ||
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| val deepLink: Uri? = pendingDynamicLinkData.link | ||
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| // Handle the deep link. For example, open the linked | ||
| // content, or apply promotional credit to the user's | ||
| // account. | ||
| // ... | ||
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| // Display deep link in the UI | ||
| if (deepLink != null) { | ||
| _deepLink.value = deepLink.toString() | ||
| } else { | ||
| Log.d(TAG, "getDynamicLink: no link found") | ||
| } | ||
| } catch (e: Exception) { | ||
| Log.w(TAG, "getDynamicLink:onFailure", e) | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * Build a Firebase Dynamic Link. | ||
| * https://firebase.google.com/docs/dynamic-links/android/create#create-a-dynamic-link-from-parameters | ||
| * | ||
| * @param deepLink the deep link your app will open. This link must be a valid URL and use the | ||
| * HTTP or HTTPS scheme. | ||
| * @param minVersion the `versionCode` of the minimum version of your app that can open | ||
| * the deep link. If the installed app is an older version, the user is taken | ||
| * to the Play store to upgrade the app. Pass 0 if you do not | ||
| * require a minimum version. | ||
| * @return a [Uri] representing a properly formed deep link. | ||
| */ | ||
| // @VisibleForTesting | ||
| fun buildDeepLink(uriPrefix: String, deepLink: Uri, minVersion: Int): Uri { | ||
| // Set dynamic link parameters: | ||
| // * URI prefix (required) | ||
| // * Android Parameters (required) | ||
| // * Deep link | ||
| // Build the dynamic link | ||
| val link = Firebase.dynamicLinks.dynamicLink { | ||
| domainUriPrefix = uriPrefix | ||
| androidParameters { | ||
| minimumVersion = minVersion | ||
| } | ||
| link = deepLink | ||
| } | ||
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| // Return the dynamic link as a URI | ||
| return link.uri | ||
| } | ||
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| // @VisibleForTesting | ||
| fun buildShortLinkFromParams(uriPrefix: String, deepLink: Uri, minVersion: Int) { | ||
| // Set dynamic link parameters: | ||
| // * URI prefix (required) | ||
| // * Android Parameters (required) | ||
| // * Deep link | ||
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| try { | ||
| viewModelScope.launch { | ||
| val shortDynamicLinks = Firebase.dynamicLinks.shortLinkAsync { | ||
| link = deepLink | ||
| domainUriPrefix = uriPrefix | ||
| androidParameters { | ||
| minimumVersion = minVersion | ||
| } | ||
| }.await() | ||
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| val shortLinks = shortDynamicLinks.shortLink | ||
| // val flowChartLink = shortDynamicLinks.previewLink | ||
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| _shortLink.value = shortLinks.toString() | ||
| } | ||
| } catch (e: Exception) { | ||
| Log.e(TAG, e.toString()) | ||
| } | ||
| } | ||
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| fun validateAppCode(uriPrefix: String) { | ||
| if (uriPrefix.contains("YOUR_APP")) { | ||
| _validUriPrefix.value = false | ||
| } | ||
| } | ||
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| companion object { | ||
| const val TAG = "DynamicLinksViewModel" | ||
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| // Used to inject this ViewModel's dependencies | ||
| // See also: https://developer.android.com/topic/libraries/architecture/viewmodel/viewmodel-factories | ||
| val Factory: ViewModelProvider.Factory = object : ViewModelProvider.Factory { | ||
| @Suppress("UNCHECKED_CAST") | ||
| override fun <T : ViewModel> create( | ||
| modelClass: Class<T>, | ||
| extras: CreationExtras | ||
| ): T { | ||
| // Get Remote Config instance. | ||
| val dynamicLinks = Firebase.dynamicLinks | ||
| return DynamicLinksViewModel(dynamicLinks) as T | ||
| } | ||
| } | ||
| } | ||
| } |
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