Android 10 Activity onCreate崩溃 [英] Android 10 Activity onCreate Crash

问题描述

我的应用程序的启动活动在除我最近更新的Android 10设备上的所有设备上都运行良好.

The splash activity of my app works well on all devices except on an Android 10 device that I have just recently updated.

这是我的代码:

public class SplashScreen extends AppCompatActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if(FirebaseAuth.getInstance().getUid() != null)
      startActivity(new Intent(this, HomeActivity.class));
    else
      startActivity(new Intent(this, LoginActivity.class));

    finish();
  }

}

我也尝试过直接导航到 HomeActiviy 或 LoginActivity ，但是当我尝试在Android 10设备上运行时仍然崩溃

I have also tried navigating directly to HomeActiviy or LoginActivity but still crashes when I try to run on an Android 10 device

Error occurs when calling super.onCreate(savedInstanceState)

2020-01-17 13:58:25.527 23561-23561/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: rickroydaban.projects.android.memorise, PID: 23561
    java.lang.RuntimeException: Unable to start activity ComponentInfo{rickroydaban.projects.android.memorise/rickroydaban.android.memorise.ui.SplashScreen}: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.lifecycle.ReportFragment.setProcessListener(androidx.lifecycle.ReportFragment$ActivityInitializationListener)' on a null object reference
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3448)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:237)
        at android.app.ActivityThread.main(ActivityThread.java:7811)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1076)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.lifecycle.ReportFragment.setProcessListener(androidx.lifecycle.ReportFragment$ActivityInitializationListener)' on a null object reference
        at androidx.lifecycle.ProcessLifecycleOwner$3.onActivityCreated(ProcessLifecycleOwner.java:162)
        at android.app.Application.dispatchActivityCreated(Application.java:392)
        at android.app.Activity.dispatchActivityCreated(Activity.java:1232)
        at android.app.Activity.onCreate(Activity.java:1513)
        at androidx.core.app.ComponentActivity.onCreate(ComponentActivity.java:81)
        at androidx.activity.ComponentActivity.onCreate(ComponentActivity.java:149)
        at androidx.fragment.app.FragmentActivity.onCreate(FragmentActivity.java:313)
        at androidx.appcompat.app.AppCompatActivity.onCreate(AppCompatActivity.java:106)
        at rickroydaban.android.memorise.ui.SplashScreen.onCreate(SplashScreen.java:18)
        at android.app.Activity.performCreate(Activity.java:7955)
        at android.app.Activity.performCreate(Activity.java:7944)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3423)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:237) 
        at android.app.ActivityThread.main(ActivityThread.java:7811) 
        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:1076) 

有人能解决此问题吗?

推荐答案

根据此问题，这会在使用 lifecycle-runtime:2.2.0 (通常是通过对Fragment或AppCompat的传递依赖)和 lifecycle-process:2.1.0 (通常是通过对 lifecycle-extensions 的传递依赖.

As per this issue, this will occur when using lifecycle-runtime:2.2.0 (usually through a transitive dependency on Fragment or AppCompat) and lifecycle-process:2.1.0 (usually through a transitive dependency on lifecycle-extensions).

该错误中有许多解决方法:

There are a number of work arounds available in the bug:

您执行以下任一操作:

You do any one of the following:

• 添加对 lifecycle-process:2.2.0-alpha05 的显式依赖，以引入与 lifecycle-runtime:2.2.0-alpha05 兼容的新版本
• 将您的 lifecycle:extensions 依赖项升级到 2.2.0-alpha05 ，以便升级 lifecycle-process
• 完全删除 lifecycle:extensions 依赖性，并仅使用所需的生命周期库(例如，如果需要ViewModel，请使用 lifecycle-viewmodel-ktx )，以便您根本不引入 lifecycle-process

• Add an explicit dependency on lifecycle-process:2.2.0-alpha05 to pull in the new version that is compatible with lifecycle-runtime:2.2.0-alpha05
• Upgrade your lifecycle:extensions dependency to 2.2.0-alpha05 so that lifecycle-process is upgraded
• Remove the lifecycle:extensions dependency entirely and use only the lifecycle libraries you need (for example, use lifecycle-viewmodel-ktx if you want ViewModels) so that you don't pull in lifecycle-process at all

或者，由于兼容性问题已在更高版本中得到解决，因此请升级到更高版本的Fragments(版本 1.2.0-beta01 或更高版本)或Lifecycle 2.2.0-如果您直接依赖生命周期，则为beta01 或更高版本.

Or, since the compatibility issue has been fixed in a later release, upgrade to a later version of Fragments (version 1.2.0-beta01 or higher) or Lifecycle 2.2.0-beta01 or higher if you directly depend on Lifecycle.

这篇关于Android 10 Activity onCreate崩溃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！