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Move optional synchronous user agent fetch out of start up (#1181)
* Move synchronous user agent fetch out of start up * move sync call to main dispatcher * Update CustomBranchApp.java * Update DeviceInfo.java * Update DeviceInfo.java * add else case to add object
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84 changes: 84 additions & 0 deletions
84
Branch-SDK/src/main/java/io/branch/coroutines/DeviceSignals.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package io.branch.coroutines | ||
|
|
||
| import android.content.Context | ||
| import android.text.TextUtils | ||
| import android.webkit.WebSettings | ||
| import android.webkit.WebView | ||
| import io.branch.referral.Branch | ||
| import io.branch.referral.BranchLogger.e | ||
| import io.branch.referral.BranchLogger.v | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.sync.Mutex | ||
| import kotlinx.coroutines.sync.withLock | ||
| import kotlinx.coroutines.withContext | ||
|
|
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| val mutex = Mutex() | ||
|
|
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| /** | ||
| * Returns the user agent string on a background thread via static class WebSettings | ||
| * This is the default behavior. | ||
| * | ||
| * Use a mutex to ensure only one is executed at a time. | ||
| * Successive calls will return the cached value. | ||
| * | ||
| * For performance, this is called at the end of the init, or while awaiting init if enqueued prior. | ||
| */ | ||
| suspend fun getUserAgentAsync(context: Context): String? { | ||
| return withContext(Dispatchers.Default) { | ||
| mutex.withLock { | ||
| var result: String? = null | ||
|
|
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| if (!TextUtils.isEmpty(Branch._userAgentString)) { | ||
| v("UserAgent cached " + Branch._userAgentString) | ||
| result = Branch._userAgentString | ||
| } | ||
| else { | ||
| try { | ||
| v("Begin getUserAgentAsync " + Thread.currentThread()) | ||
| result = WebSettings.getDefaultUserAgent(context) | ||
| v("End getUserAgentAsync " + Thread.currentThread() + " " + result) | ||
| } | ||
| catch (exception: Exception) { | ||
| e("Failed to retrieve userAgent string. " + exception.message) | ||
| } | ||
| } | ||
|
|
||
| result | ||
| } | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Returns the user agent string on the main thread via WebView instance. | ||
| * Use when facing errors with the WebSettings static API. | ||
| * https://bugs.chromium.org/p/chromium/issues/detail?id=1279562 | ||
| * https://bugs.chromium.org/p/chromium/issues/detail?id=1271617 | ||
| * | ||
| * | ||
| * Because there is only one main thread, this function will only execute one at a time. | ||
| * Successive calls will return the cached value. | ||
| */ | ||
| suspend fun getUserAgentSync(context: Context): String?{ | ||
| return withContext(Dispatchers.Main){ | ||
| var result: String? = null | ||
|
|
||
| if(!TextUtils.isEmpty(Branch._userAgentString)){ | ||
| v("UserAgent cached " + Branch._userAgentString) | ||
| result = Branch._userAgentString | ||
| } | ||
| else { | ||
| try { | ||
| v("Begin getUserAgentSync " + Thread.currentThread()) | ||
| val w = WebView(context) | ||
| result = w.settings.userAgentString | ||
| w.destroy() | ||
| v("End getUserAgentSync " + Thread.currentThread() + " " + result) | ||
| } | ||
| catch (ex: Exception) { | ||
| e("Failed to retrieve userAgent string. " + ex.message) | ||
| } | ||
| } | ||
|
|
||
| result | ||
| } | ||
| } |
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