flutter_appauth与local_auth共存时登录崩溃的解决方案咨询

项目依赖 #

cupertino_icons: ^1.0.2
http: ^0.13.6
local_auth: ^2.1.6
rxdart: ^0.27.7
bloc: ^8.1.2
google_fonts: ^4.0.4
flutter_secure_storage: ^8.0.0
flutter_appauth: ^6.0.0
flutter_bloc: ^8.1.3
flutter_spinkit: ^5.2.0
cached_network_image: ^3.2.3
just_audio: ^0.9.33
just_audio_background: ^0.0.1-beta.10
audio_video_progress_bar: ^1.0.1
sliding_up_panel: ^2.0.0+1

问题现象 #

未安装local_auth时，flutter_appauth登录功能正常；安装local_auth后，登录时抛出以下致命错误：

D/AndroidRuntime( 8319): Shutting down VM
E/AndroidRuntime( 8319): FATAL EXCEPTION: main
E/AndroidRuntime( 8319): Process: my.minda.mobile.player, PID: 8319
E/AndroidRuntime( 8319): java.lang.RuntimeException: Unable to start activity ComponentInfo{my.minda.mobile.player/net.openid.appauth.RedirectUriReceiverActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
E/AndroidRuntime( 8319):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3645)
E/AndroidRuntime( 8319):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3782)
E/AndroidRuntime( 8319):    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:101)
E/AndroidRuntime( 8319):    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
E/AndroidRuntime( 8319):    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
E/AndroidRuntime( 8319):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2307)
E/AndroidRuntime( 8319):    at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime( 8319):    at android.os.Looper.loopOnce(Looper.java:201)
E/AndroidRuntime( 8319):    at android.os.Looper.loop(Looper.java:288)
E/AndroidRuntime( 8319):    at android.app.ActivityThread.main(ActivityThread.java:7872)
E/AndroidRuntime( 8319):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 8319):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
E/AndroidRuntime( 8319):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
E/AndroidRuntime( 8319): Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
E/AndroidRuntime( 8319):    at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:846)
E/AndroidRuntime( 8319):    at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:809)
E/AndroidRuntime( 8319):    at androidx.appcompat.app.AppCompatDelegateImpl.initWindowDecorActionBar(AppCompatDelegateImpl.java:550)
E/AndroidRuntime( 8319):    at androidx.appcompat.app.AppCompatDelegateImpl.getSupportActionBar(AppCompatDelegateImpl.java:537)
E/AndroidRuntime( 8319):    at androidx.appcompat.app.AppCompatDelegateImpl.invalidateOptionsMenu(AppCompatDelegateImpl.java:1220)
E/AndroidRuntime( 8319):    at androidx.appcompat.app.AppCompatActivity.invalidateOptionsMenu(AppCompatActivity.java:314)
E/AndroidRuntime( 8319):    at androidx.activity.ComponentActivity.invalidateMenu(ComponentActivity.java:553)
E/AndroidRuntime( 8319):    at androidx.activity.ComponentActivity$$ExternalSyntheticLambda0.run(Unknown Source:2)
E/AndroidRuntime( 8319):    at androidx.core.view.MenuHostHelper.addMenuProvider(MenuHostHelper.java:133)
E/AndroidRuntime( 8319):    at androidx.activity.ComponentActivity.addMenuProvider(ComponentActivity.java:531)
E/AndroidRuntime( 8319):    at androidx.fragment.app.FragmentActivity$HostCallbacks.addMenuProvider(FragmentActivity.java:736)
E/AndroidRuntime( 8319):    at androidx.fragment.app.FragmentManager.attachController(FragmentManager.java:2793)
E/AndroidRuntime( 8319):    at androidx.fragment.app.FragmentController.attachHost(FragmentController.java:117)
E/AndroidRuntime( 8319):    at androidx.fragment.app.FragmentActivity.lambda$init$3$androidx-fragment-app-FragmentActivity(FragmentActivity.java:140)
E/AndroidRuntime( 8319):    at androidx.fragment.app.FragmentActivity$$ExternalSyntheticLambda3.onContextAvailable(Unknown Source:2)
E/AndroidRuntime( 8319):    at androidx.activity.contextaware.ContextAwareHelper.dispatchOnContextAvailable(ContextAwareHelper.java:99)
E/AndroidRuntime( 8319):    at androidx.activity.ComponentActivity.onCreate(ComponentActivity.java:352)
E/AndroidRuntime( 8319):    at androidx.fragment.app.FragmentActivity.onCreate(FragmentActivity.java:217)
E/AndroidRuntime( 8319):    at net.openid.appauth.RedirectUriReceiverActivity.onCreate(RedirectUriReceiverActivity.java:49)
E/AndroidRuntime( 8319):    at android.app.Activity.performCreate(Activity.java:8305)
E/AndroidRuntime( 8319):    at android.app.Activity.performCreate(Activity.java:8284)
E/AndroidRuntime( 8319):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1417)
E/AndroidRuntime( 8319):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3626)
E/AndroidRuntime( 8319):    ... 12 more
I/Process ( 8319): Sending signal. PID: 8319 SIG: 9
Lost connection to device.
Exited (sigterm)

已尝试修改AndroidManifest.xml的android:theme属性，但问题未解决，求同时使用两个插件的方案。

1. 为RedirectUriReceiverActivity指定AppCompat主题 #

在android/app/src/main/AndroidManifest.xml中，找到或添加net.openid.appauth.RedirectUriReceiverActivity的声明，明确指定AppCompat类型主题：

<activity
    android:name="net.openid.appauth.RedirectUriReceiverActivity"
    android:exported="true"
    android:theme="@style/Theme.AppCompat.Light.NoActionBar" />

2. 确保全局应用主题继承自AppCompat #

检查AndroidManifest.xml中<application>标签的android:theme属性，确保主题基于Theme.AppCompat：

<application
    ...
    android:theme="@style/Theme.MyApp">

对应res/values/styles.xml中的主题定义示例：

<style name="Theme.MyApp" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/primary</item>
    <item name="colorPrimaryDark">@color/primary_dark</item>
    <item name="colorAccent">@color/accent</item>
</style>

3. 清理重建项目 #

完成上述修改后，执行以下步骤确保生效：

• 运行flutter clean清理缓存
• 运行flutter pub get重新获取依赖
• 重新编译运行项目

原理说明 #

local_auth引入的AndroidX依赖会改变应用主题的继承链，导致flutter_appauth依赖的RedirectUriReceiverActivity无法自动匹配到AppCompat主题。通过直接为该Activity指定主题，或确保全局主题为AppCompat派生类，可以解决两者的兼容性冲突。

内容的提问来源于stack exchange，提问作者Kayin Leong