Android工作室找不到JNI方法但工作正常

Question

我正在尝试构建一个使用JNI的Android程序，这是我的Android.mk：

LOCAL_PATH := $(call my-dir)
TESSERACT_PATH := $(LOCAL_PATH)/tesseract/src
LEPTONICA_PATH := $(LOCAL_PATH)/leptonica/src
LIBJPEG_PATH := $(LOCAL_PATH)/libjpeg
LIBPNG_PATH := $(LOCAL_PATH)/libpng

# Just build the Android.mk files in the subdirs
include $(call all-subdir-makefiles)

Application.mk

APP_STL := gnustl_static
APP_ABI := armeabi armeabi-v7a arm64-v8a
APP_OPTIM := release
APP_PLATFORM := android-9
APP_CPPFLAGS += -fexceptions -frtti
NDK_TOOLCHAIN_VERSION := clang

但是Android Studio警告我 Java native method can't resolve corresponding JNI method ，但实际上每项工作都可以运行，程序可以编译并运行correclty：

这是我的gradle构建脚本：

task ndkBuild(type: Exec) {
        def ndkDirProperty = properties.getProperty('ndk.dir')
        def ndkDirPrefix = ndkDirProperty != null ? ndkDirProperty + '/' : ''

        def ndkBuildExt = Os.isFamily(Os.FAMILY_WINDOWS) ? ".cmd" : ""

        commandLine "${ndkDirPrefix}ndk-build${ndkBuildExt}", '-C', file('.').absolutePath,
                '-j', Runtime.runtime.availableProcessors()
    }

    tasks.withType(JavaCompile) {
        compileTask -> compileTask.dependsOn ndkBuild
    }

    // Cleanup task to remove previously generated binaries
    task ndkClean(type: Exec) {
        def ndkDirProperty = properties.getProperty('ndk.dir')
        def ndkDirPrefix = ndkDirProperty != null ? ndkDirProperty + '/' : ''

        def ndkBuildExt = Os.isFamily(Os.FAMILY_WINDOWS) ? ".cmd" : ""

        commandLine "${ndkDirPrefix}ndk-build${ndkBuildExt}", '-C', file('.').absolutePath, 'clean'
    }

    tasks.withType(Delete) {
        cleanTask -> cleanTask.dependsOn ndkClean
    }