Android用于使用NDK，我得到Android NDK：中止错误

Question

在我当前的项目中，我尝试使用用C语言编写的简单文件，在从android studio安装NDK、CMake、LLDB之后，我当前的NDK路径是：

ndk.dir=/Users/mahdi/Desktop/Home/Packages/AndroidSdk/ndk-bundle

而且

gradle.properties内容

android.useDeprecatedNdk=true

Build.Gradle：

defaultConfig {
    applicationId "ir.pishguy.myapp"
    minSdkVersion 17
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"
    multiDexEnabled true
    vectorDrawables.useSupportLibrary = true

    ndk{
        moduleName "web_service_encryption"
        ldLibs "log", "z", "m"
        abiFilters "armeabi", "armeabi-v7a", "x86"
    }
}

现在，当我尝试制作和安装应用程序时，我得到了这个错误：

错误：（115）***Android NDK：正在中止。停下来。错误：任务“：app：compiledebugndk”执行失败。ProcessException：使用参数执行进程/users/mahdi/desktop/home/packages/androidsdk/ndk-bundle/ndk-build时出错{ndk_project_path=null app_build_script=/users/mahdi/desktop/home/projects/android/myapp/app/build/intermediates/ndk/debug/android.mk app_platform=android-25

和JNI文件夹中的C文件：

#include<string.h>
#include<jni.h>
#include<android/log.h>

//  LOGI("hello") ?? LOGI("money %d",15)
#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "native", __VA_ARGS__))
#define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "native", __VA_ARGS__))

const char key[] = "~yfj(e^m1)o@2pc!"; //16???
int len = 0;


unsigned char getByteNumber(unsigned char first, unsigned char end) {
    int firstPosition = 0, endPosition = 0;
    int position = 0;
    for (; position < 16; position++) {
        if (key[position] == first) {
            firstPosition = position;
        }
        if (key[position] == end) {
            endPosition = position;
        }
    }
    return (firstPosition << 4) | (endPosition);
}


void encrypt(unsigned char p[], unsigned char res[]) {
    int i = 0;
    for (; i < len; i++) {
        res[2 * i] = key[p[i] / 16];
        res[2 * i + 1] = key[p[i] % 16];
    }
}


void decrypt(unsigned char p[], char res[]) {
    int i;
    for (i = 0; i < len; i++) {
        res[i] = getByteNumber(p[i * 2], p[i * 2 + 1]);
    }
}

jstring Java_ir_pishguy_myapp_EncryptUtil_encrypt(JNIEnv *env, jclass this,
        jbyteArray src) {
    unsigned char *buff = (char*) (*env)->GetByteArrayElements(env, src, NULL);
    len = (*env)->GetArrayLength(env, src);
    unsigned char res[len * 2];
    encrypt(buff, res);
    res[len * 2] = '\0';
    (*env)->ReleaseByteArrayElements(env, src, buff, 0);
    jstring resStr = (*env)->NewStringUTF(env, res);
    return resStr;
}

jstring Java_ir_pishguy_myapp_EncryptUtil_decrypt(JNIEnv *env, jclass this,
        jbyteArray src) {
    unsigned char *buff = (char*) (*env)->GetByteArrayElements(env, src, NULL);
    len = (*env)->GetArrayLength(env, src);
    len = len / 2;
    signed char res[len];
    decrypt(buff, res);
    res[len] = '\0';
    (*env)->ReleaseByteArrayElements(env, src, buff, 0);
    jstring resStr = (*env)->NewStringUTF(env, res);
    return resStr;
}

Answer 1

App_Platform=Android-25

看起来usedeprecatedndk路径是错误的。25是您的targetsdkversion，而不是您的minsdkversion(NDK目标需要与您的最小目标匹配）。从不推荐的东西切换到使用externalnativebuild。

您所看到的构建问题是因为NDK中没有android-25这样的东西（我们只有那些实际上有新的原生API以节省大小的平台）。