VinlorJiang

Below errors: `org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':transformClassesAndResourcesWithProguardForArmv8Debug'. at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88) at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)...

**Describe the bug** I use the below methods to add firebase to my project: 1. ionic cordova plugin add cordova-plugin-firebase 2. npm install @ionic-native/firebase 3. import { Firebase } from...

第6题 上述代码写出来的类与下面这种写法等效：

1

@property NSString *firstName; 以上这种定义方式应该包含的内容是：成员变量+setter方法+getter方法； 而你说与下面的等价： - (NSString *)firstName; - (void)setFirstName:(NSString *)firstName; 以上就包含：setter方法+getter方法，而没有定义成员变量。 不知是不是这样理解的？请多多指教，谢谢！

在方法 initWithSever 时候iOS 10 以下没有生成 RingCall 单例对象，需要执行下[RingCall sharedMCCall];