Question

一切都适合'androidx.biometric:biometric:1.0.0-alpha03'，但是当我使用最新的'androidx.biometric:biometric:1.0.0-alpha04'构建项目并调用myBiometricPrompt.authenticate(promptInfo)时，会抛出此异常：FragmentManager is already executing transactions。

这是堆栈跟踪：

 java.lang.IllegalStateException: FragmentManager is already executing transactions
        at androidx.fragment.app.FragmentManagerImpl.ensureExecReady(FragmentManager.java:2207)
        at androidx.fragment.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2267)
        at androidx.fragment.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:814)
        at androidx.biometric.BiometricPrompt.authenticateInternal(BiometricPrompt.java:525)
        at androidx.biometric.BiometricPrompt.authenticate(BiometricPrompt.java:465)
        at com.my.app.ui.LoginFragment.handleTouchIdAuth(LoginFragment.kt:161)
        at com.my.app.ui.LoginFragment.onViewCreated(LoginFragment.kt:62)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1471)
        at androidx.fragment.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2646)
        at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2416)
        at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2372)
        at androidx.fragment.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2273)
        at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3273)
        at androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3229)
        at androidx.fragment.app.Fragment.performActivityCreated(Fragment.java:2466)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1483)
        at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1784)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1852)
        at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3269)
        at androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3229)
        at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:201)
        at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:620)
        at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:178)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1391)
        at android.app.Activity.performStart(Activity.java:7157)
        at android.app.ActivityThread.handleStartActivity(ActivityThread.java:2937)
        at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:180)
        at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:165)
        at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:142)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

有人知道发生了什么事和怎么做吗？现在，我将坚持使用 1.0.0-alpha03

版本

谢谢！

Answer 1

通过提供第二个构造函数，可以在androidx.biometric:biometric:1.0.0-beta01中解决此问题。在此版本之前，我通过恢复为alpha03来解决了该问题，但是现在有一个实际的解决方案。

您可以找到beta01发行说明here

我们为BiometricPrompt引入了第二个构造函数，该构造函数允许它将托管在Fragment中（与现有的构造方法相对，这需要一个FragmentActivity）。

您可以找到新的BiometricPrompt构造函数文档here

BiometricPrompt(Fragment fragment, Executor executor, BiometricPrompt.AuthenticationCallback callback)

要修复，请按照以下简单步骤操作：

将build.gradle更改为使用生物识别版本1.0.0-beta01

使用新的构造函数。简而言之，将第一个参数更改为片段而不是活动。请在下面查看我的代码更改：

val biometricPrompt = BiometricPrompt(activity!!, executor, callback)
// Change the above line to the below line
val biometricPrompt = BiometricPrompt(this, executor, callback)

Answer 2

alpha04似乎有问题，恢复为alpha03即可解决。猜猜我们将不得不等待alpha05才能升级。

只希望Google等到生物识别库超出alpha版本后才弃用指纹库...

Answer 3

该问题在最新版本androidx.biometric:biometric:1.0.0-beta01中仍然存在。

要修复此问题，请显示处理程序中的biometricPrompt：

    val promptInfo = BiometricPrompt.PromptInfo.Builder()
            .setTitle(fragmentActivity.getString(title))
            .setNegativeButtonText(fragmentActivity.getString(negativeButtonText))
            .build()
    val biometricPrompt = BiometricPrompt(...)

    // display biometricPrompt from handler
    Handler().post {
        biometricPrompt.authenticate(promptInfo)
    }

将androidx biometric更新为1.0.0-alpha04后，Android崩溃

3 个答案: