为NDK设置了Crashlytics之后，我看不到行号或符号

Question

您好，在Android应用程序中安装了crashlytics之后，我已经能够使用Java中的stacktrace成功检测到崩溃。但是，在设置了NDK之后，我在Crashlytics上的堆栈跟踪只说：

0 libc.so（丢失）

1个libart.so（丢失）

2 libnative-lib.so（遗漏）

3 libc.so（丢失），等等，没有符号。...

我经历过：https://docs.fabric.io/android/crashlytics/ndk.html，https://fabric.io/downloads/gradle/ndk，并确保运行./gradlew crashlyticsUploadSymbolsRelease。另外，我的MainActivity.java文件中有Fabric.with(this, new Crashlytics(), new CrashlyticsNdk());行。有人知道我可能会想念什么吗？

buildscript {
    repositories {
        jcenter()
            maven { url 'https://maven.fabric.io/public' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.0'
        // The Fabric Gradle plugin uses an open ended version to react
        // quickly to Android tooling updates
        classpath 'io.fabric.tools:gradle:1.+'
    }
}

apply plugin: 'com.android.application'
apply plugin: 'io.fabric'

repositories {
    jcenter()
    maven { url 'https://maven.fabric.io/public' }
}

android {
    compileSdkVersion 26
    buildToolsVersion '27.0.3'

    defaultConfig {
        applicationId "com.example.crashapp"
        minSdkVersion 16
        targetSdkVersion 26
        externalNativeBuild {
            cmake {
                cppFlags "-std=c++14 -frtti -fexceptions"
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
        }
    }
    externalNativeBuild {
        cmake {
            path "CMakeLists.txt"
        }
    }
}

crashlytics {
    enableNdk true
    androidNdkOut     'build/intermediates/cmake/debug/obj'
    androidNdkLibsOut 'build/intermediates/cmake/release/obj'
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.9'
    implementation 'com.crashlytics.sdk.android:crashlytics-ndk:2.0.5'
}