小编Tee*_*ker的帖子

一些错误，例如

   java.lang.RuntimeException: Unable to destroy activity {xxxxxx}:
   java.lang.IllegalStateException: Can't access ViewModels from
   onDestroy

是否可以使用反射来访问对象的私有字段并在此字段上调用公共方法？

即

class Hello {
   private World word
}

class World {
   public BlaBlaBla foo()
}

Hello h = new Hello()

World world = reflect on the h


// And then 

world.foo()

运行:./ gradlew clean assembleDebug

Exception in thread "main" java.lang.NullPointerException: Couldn't find outer class xxxxx/SomeClass$someMethod$1$1$2 of xxxx/SomeClass$someMethod$1$1$2$1

execution failed for task ':app:transformClassesWithDesugarForDevDebug'.

问题

同样的问题https://www.reddit.com/r/androiddev/comments/7u8tug/android_studio_31_beta_1_is_available/

Android Studio 3.2 Canary11

Gradle Tool 3.2.0-alpha11

kapt的com.android.databinding与3.2.0-alpha11不兼容,无法构建/运行apk.

同时,它的最大工作量为3.2.0-alpha10

```任务执行失败':app:kaptGenerateStubsDevDebugKotlin'.

无法解析配置':app:kapt'的所有文件.找不到com.android.databinding:编译器:3.2.0-alpha11.在以下位置搜索:file:/Users/xxxx/Library/Android/sdk/extras/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom文件:/ Users /xxx/Library/Android/sdk/extras/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar文件:/ Users/xxx/Library/Android/sdk/extras /google/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom文件:/ Users/xxx/Library/Android/sdk/extras/google/m2repository/com/android /databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar文件:/Users/xxx/Library/Android/sdk/extras/android/m2repository/com/android/databinding/compiler/3.2.0 -alpha11/compiler-3.2.0-alpha11.pom文件:/Users/xxx/Library/Android/sdk/extras/android/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0 -alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://jcenter.bintray.com/com/android/databindin g/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2 .0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://dl.google .com/dl/android/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://dl.google.com/dl/android/maven2/com/ android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0 -alpha11.pom https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2 /com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0- alpha11/compiler-3.2.0-alpha11.jar https://dl.google.com/dl/android/maven2/com/android/databinding/compiler /3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://dl.google.com/dl/android/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2. 0-alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://jcenter.bintray.com/com/ android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler -3.2.0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https:// dl .google.com/dl/android/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://dl.google.com/dl/android/maven2/ com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2 .0-alpha11.pom https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://maven.fabric.io/public/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://maven.fabric.io/ public/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0 -alpha11/compiler-3.2.0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar 必填通过:project:app```

问题

我使用"chrome custom tab"(cct),一切运行正常

但是,如果我想在buildIn工具栏中添加"操作",则cct仅适用于drawable目录下的旧"png"文件.我已经切换到使用矢量资产来生成矢量绘图并使用vector-drawable-compat做所有事情,似乎cct不能用它,对吧？

谢谢谁能给我一个答案.

我可以只使用Swift和Xcode而不是AppCode吗？