Thank you for your notice.
1. First, It is our goal to support arm-v7a, which is removed in NDK 17. There
is no other way except for using NDK 16 for now.
2. Weex uses JavaScript Core compiled by GCC as a JS Interpreter. It is
strongly suggested to use GCC instead of Clang.
3. We will fix the return value issue soon.
> 在 2018年7月14日，17:39，wcxwave <wcxw...@aliyun.com.INVALID> 写道：
>
> Dear all,
> in release 0.19-rc2 android project, I find the libweexcore has some
> problems.
> 1) First, in the latest ndk 0.16 - 0.17, the android just support clang
> platform tools.
> -DANDROID_TOOLCHAIN=clang
> -DANDROID_STL=c++_static
> but in the weex-sdk project, it still uses gcc.
> -DANDROID_TOOLCHAIN=gcc,
> -DANDROID_STL=gnustl_static,
> I get some bugs such as 'there no memcpy function'.
> 2) Second, After I change it to use clang, there are some warning during the
> compile.
> I just ignore it.(but the developer should resolve it. some warning just
> a bug.)
> I get the weexcore.so. But it crashes after launch the app.
> Then I think it maybe my enviroment problems, so I just replace the
> weexcore.so from the apache github.
> Unfortunately, there weexcore.so in the github is not matched the source.
> It reports there is no native method nativeSetViewPort in WXBridge. I'm
> depressed for it.
> Then I just try to solve the crash.
> A/art: art/runtime/check_jni.cc:70] JNI DETECTED ERROR IN APPLICATION: native
> code passing in reference to invalid local reference: 0x200001
> A/art: art/runtime/check_jni.cc:70] in call to DeleteLocalRef
> After some debuging, I find the reason for it.
> In the jni_load.cc funtion JNI_OnLoad,
> the function WeexCore::RegisterJNIMeasureMode(env); will
> crash, it will call DeleteLocalRef twice.
> After debuging more times and chaning code, I find a problem for the
> function RegisterJNIMeasureMode.
>
> the origin source:
> bool RegisterJNIMeasureMode(JNIEnv *env) {
> RegisterNativesImpl(env);
> }
> there is no return value.
> after I change it to the following code,
> bool RegisterJNIMeasureMode(JNIEnv *env) {
> ///wcheer.com modified by simon add return 2018.7.14
> return RegisterNativesImpl(env);
> }
> It can works for the function. but the latter function is crashed again.
> WeexCore::RegisterWXJsFunction(env);
> it has the same reason for crashing.
>
> In the last, I suggest the weex project ndk should use clang toolschain.
> You can resolve some easy problems and it can save other developer's time and
> efforts.\
> Thanks.
>
> Regards Best.
> Simon Wu.
> 2018.7.14
>
>
>
>
