Android Studio 3.1.1的“项目模式”下未显示新的头文件

Question

我正在尝试学习一些Android开发。 我已经为一个简单的hello世界启动了一个新项目，并且效果很好。

该项目实质上是cpp文件夹中默认的一个+一个头文件，

但是在项目模式下我看不到这样的.cpp，有人可以建议如何解决此问题吗？

（请参见下图）。

我尝试更改File > Project Structure中的某些设置，但似乎没有什么不同。

也许值得注意的是，头文件根本没有在CMakeLists.txt中列出。

# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html

# Sets the minimum version of CMake required to build the native library.

cmake_minimum_required(VERSION 3.4.1)

# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.

add_library( # Sets the name of the library.
             native-lib

             # Sets the library as a shared library.
             SHARED

             # Provides a relative path to your source file(s).
             src/main/cpp/native-lib.cpp )

# Searches for a specified prebuilt library and stores the path as a
# variable. Because CMake includes system libraries in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.

find_library( # Sets the name of the path variable.
              log-lib

              # Specifies the name of the NDK library that
              # you want CMake to locate.
              log )

# Specifies libraries CMake should link to your target library. You
# can link multiple libraries, such as libraries you define in this
# build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( # Specifies the target library.
                       native-lib

                       # Links the target library to the log library
                       # included in the NDK.
                       ${log-lib} )

Answer 1

根据android文档：

  

已知问题：即使您在CMake构建脚本中指定了其他标头，Android Studio当前也仅向您显示具有匹配源文件的标头文件。参见问题＃38068472

这意味着您需要一对filename.h和filename.cpp，并相应地修改CMakeLists.txt。如果头文件具有对应的.cpp，且名称相同，则会以项目模式显示。

参考：

https://developer.android.com/studio/projects/add-native-code