harmony 鸿蒙SDK Usage
SDK Usage
What is the macro definition of the arm64-v8a/armeabi-v7a directory in CMake?
Applicable to: OpenHarmony 3.1 Beta 5 (API version 9)
Solution
The arm64-v8a and armeabi-v7a directories are as follows:
entry
├─ libs
│ ├─ arm64-v8a
│ │ └─ libMyDemo.so
│ └─ armeabi-v7a
│ └─ libMyDemo.so
└─ src
└─ main
└─ cpp
└─ CMakeLists.txt
The macro for accessing the directory is \${CMAKE_CURRENT_SOURCE_DIR}/../../../libs/${OHOS_ARCH}/xxxx.so.
CMAKE_CURRENT_SOURCE_DIR: directory where the CMakeList.txt file is stored.
OHOS_ARCH: type of the application binary interface (ABI). The value can be armeabi-v7a or arm64-v8a. The default value is arm64-v8a.
Example
Add the link library to CMakeLists.txt.
target_link_libraries(entry PUBLIC
libace_napi.z.so
libhilog_ndk.z.so
${CMAKE_CURRENT_SOURCE_DIR}/../../../libs/${OHOS_ARCH}/libMyDemo.so
)
What should I do if an error is reported when OH_LOG_Print in the native code is used to print logs?
Applicable to: OpenHarmony 3.1 Beta 5 (API version 9)
Problem
When OH_LOG_Print is used in the native code to print logs, the following error is reported: undefined symbol: OH_LOG_Print.
Cause
The link library file is missing.
Solution
Open the CMakeLists.txt file and append libhilog_ndk.z.so to target_link_libraries.
set(NATIVERENDER_ROOT_PATH ${CMAKE_CURRENT_SOURCE_DIR})
target_link_libraries(entry PUBLIC
libace_napi.z.so
libhilog_ndk.z.so
)
How do I traverse files in rawfile?
Applicable to: OpenHarmony 3.1 Beta 5 (API version 9)
Solution
Use the OH_ResourceManager_OpenRawDir() native API to obtain the root directory of rawfile and traverse the root directory.
Reference
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