本文介绍了FirebaseAuth ClassCastException的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
java.lang.RuntimeException:无法恢复活动{com。 example.firebase / com.example.firebase.MainActivity}:java.lang.ClassCastException:com.google.android.gms.b.qf无法在android上转换为com.google.firebase.auth.n
。 app.ActivityThread.performResumeActivity(ActivityThread.java:2937)
在android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2966)
在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2367)
at android.app.ActivityThread.access $ 700(ActivityThread.java:168)
at android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1329)
at android.os。 Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:177)
at android.app.ActivityThread.main(ActivityThread.java:5493)
在java.lang.reflect.Method.invokeNative(本地方法)$ b $在java.lang.reflect.Method .invoke(Method.java:525)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1225)
在com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1041)
在dalvik.system.NativeStart.main(本地方法)
导致:java.lang.ClassCastException:com.google.android.gms.b.qf无法投射通过com.google.android.gms.b.aw.a(未知来源)com.google.firebase.auth.n
(com.google.firebase.auth.FirebaseAuth.b(未知来源)
来源)
在com.google.firebase.auth.FirebaseAuth。< init>(未知来源)
在com.google.firebase.auth.FirebaseAuth。< init>(未知来源)
at com.google.android.gms.b.av。< init>(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.a(Unknown Source)
at com。 google.firebase.auth.FirebaseAuth.b(Unknown Source)
at com.atlascoder.android.dollaruz.MainActivity.onResume(Unknown Source)
at android.app.Instrumentation.callActivityOnResume (Instrumentation.java:1209)
at android.app.Activity.performResume(Activity.java:5450)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2922)
。 ..
它发生在我的AppCompatActivity的onResume()回调中:
...
FirebaseAuth mAuth;
@Override
protected void onResume(){
super.onResume();
if(mAuth == null){
mAuth = FirebaseAuth.getInstance();
mAuth.signInAnonymously()addOnCompleteListener(新OnCompleteListener< AuthResult>(){
@覆盖
公共无效的onComplete(@NonNull任务< AuthResult>任务){
FirebaseUser用户= mAuth.getCurrentUser();
如果(!用户= NULL){
setActiveFragment(mActiveFragmentTag);
}否则{
Toast.makeText(MainActivity.this,的getString(R。 To.LASTTH_SHORT).show();
}
}
});
} else {
setActiveFragment(mActiveFragmentTag);
$ b $ / code $ / pre
第一次打电话时不会发生,但是一段时间后我重新打开应用程序。而且,更奇怪的是,即使重新启动应用程序(我的意思是在设备上重新启动,而不是重新安装),我无法打开应用程序。
我的模块的构建。 gradle content:
apply plugin:'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '24.0.0'
defaultConfig {
applicationIdcom.example.firebase
minSdkVersion 14
targetSdkVersion 23
versionName'1.3 '
vectorDrawables.useSupportLibrary =真
的versionCode 4
}
testOptions {
unitTests.returnDefaultValues =真
}
buildTypes {
$ {
minifyEnabled true
proguardFile getDefaultProguardFile('proguard-android-optimize.txt')
}
}
productFlavors {
}
}
依赖关系{
编译fileTree(dir: libs',包括:['* .jar'])
testCompile'junit:junit:4.12'
testCompile'org.mockito:mockito-core:1.10.19'
compile'com .android.support:appcompat-v7:23.3.0'
compile'com.google.android.gms:play-services-ads:9.2.1'
compile'me.grantland:autofittextview:0.2 。+'
compile'com.google.firebase:firebase-auth:9.2.1'
compile'com.google.firebase:firebase-messaging:9.2.1'
compile'com .google.firebase:firebase-database:9.2.1'
compile'com.android.support:cardview-v7:23.3.0'
compile'com.android.support:design:23.3.0 '
}
apply plugin:'com.google.gms.google-services'
有什么可能是错误的?
解决方案调用FirebaseAuth.getInstance()。signOut MainActivity在您登录后,您可以尝试它。
I am getting strange exception from deep of Android:
java.lang.RuntimeException: Unable to resume activity {com.example.firebase/com.example.firebase.MainActivity}: java.lang.ClassCastException: com.google.android.gms.b.qf cannot be cast to com.google.firebase.auth.n
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2937)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2966)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2367)
at android.app.ActivityThread.access$700(ActivityThread.java:168)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1329)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:177)
at android.app.ActivityThread.main(ActivityThread.java:5493)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1225)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1041)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: com.google.android.gms.b.qf cannot be cast to com.google.firebase.auth.n
at com.google.android.gms.b.aw.a(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.b(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.<init>(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.<init>(Unknown Source)
at com.google.android.gms.b.av.<init>(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.a(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.b(Unknown Source)
at com.atlascoder.android.dollaruz.MainActivity.onResume(Unknown Source)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1209)
at android.app.Activity.performResume(Activity.java:5450)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2922)
...
And it occurs within the onResume() callback for my AppCompatActivity:
...
FirebaseAuth mAuth;
@Override
protected void onResume(){
super.onResume();
if (mAuth == null) {
mAuth = FirebaseAuth.getInstance();
mAuth.signInAnonymously().addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
FirebaseUser user = mAuth.getCurrentUser();
if (user != null) {
setActiveFragment(mActiveFragmentTag);
} else {
Toast.makeText(MainActivity.this, getString(R.string.toast_cant_auth_firebase), Toast.LENGTH_SHORT).show();
}
}
});
} else {
setActiveFragment(mActiveFragmentTag);
}
}
...
It occurs no when first called but when I reopen the app after some time. And, what is more strange, I can't open the app even after restarting of the app (I mean restarting on device and not reinstalling).
My module's build.gradle content:
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '24.0.0'
defaultConfig {
applicationId "com.example.firebase"
minSdkVersion 14
targetSdkVersion 23
versionName '1.3'
vectorDrawables.useSupportLibrary = true
versionCode 4
}
testOptions {
unitTests.returnDefaultValues = true
}
buildTypes {
release {
minifyEnabled true
proguardFile getDefaultProguardFile('proguard-android-optimize.txt')
}
}
productFlavors {
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
testCompile 'org.mockito:mockito-core:1.10.19'
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.google.android.gms:play-services-ads:9.2.1'
compile 'me.grantland:autofittextview:0.2.+'
compile 'com.google.firebase:firebase-auth:9.2.1'
compile 'com.google.firebase:firebase-messaging:9.2.1'
compile 'com.google.firebase:firebase-database:9.2.1'
compile 'com.android.support:cardview-v7:23.3.0'
compile 'com.android.support:design:23.3.0'
}
apply plugin: 'com.google.gms.google-services'
What could be wrong?
解决方案 call FirebaseAuth.getInstance().signOut() in onDestroy of MainActivity after you sign in, you can try it.
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