Android Studio ndk-build.cmd 未运行

【问题标题】：Android studio ndk-build.cmd not runningAndroid Studio ndk-build.cmd 未运行
【发布时间】：2015-11-19 22:34:41
【问题描述】：

这是我第一次做 JNI，对 Android Studio 也不太了解，我使用的是 Windows。我只是按照 helloworld jni 教程进行操作，但遇到了问题。也许它与NDK有关。此外，我在 MainActivity.java 文件中名为 hello() 的本机函数是红色的，所以我认为这是错误。

MainActivity.java：

package com.example.user.ndkdemo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView textView = new TextView(this);
        textView.setText(hello());
        setContentView(textView);
    }

    static{
        System.loadLibrary("hello");
    }

    public native String hello();
}

com_example_user_ndkdemo_MainActivity.h：

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>


#ifndef _Included_com_example_user_ndkdemo_MainActivity
#define _Included_com_example_user_ndkdemo_MainActivity
#ifdef __cplusplus
extern "C" {
#endif
#undef com_example_user_ndkdemo_MainActivity_BIND_ABOVE_CLIENT
#define com_example_user_ndkdemo_MainActivity_BIND_ABOVE_CLIENT 8L
#undef com_example_user_ndkdemo_MainActivity_BIND_ADJUST_WITH_ACTIVITY
#define com_example_user_ndkdemo_MainActivity_BIND_ADJUST_WITH_ACTIVITY 128L
#undef com_example_user_ndkdemo_MainActivity_BIND_ALLOW_OOM_MANAGEMENT
#define com_example_user_ndkdemo_MainActivity_BIND_ALLOW_OOM_MANAGEMENT 16L
#undef com_example_user_ndkdemo_MainActivity_BIND_AUTO_CREATE
#define com_example_user_ndkdemo_MainActivity_BIND_AUTO_CREATE 1L
#undef com_example_user_ndkdemo_MainActivity_BIND_DEBUG_UNBIND
#define com_example_user_ndkdemo_MainActivity_BIND_DEBUG_UNBIND 2L
#undef com_example_user_ndkdemo_MainActivity_BIND_IMPORTANT
#define com_example_user_ndkdemo_MainActivity_BIND_IMPORTANT 64L
#undef com_example_user_ndkdemo_MainActivity_BIND_NOT_FOREGROUND
#define com_example_user_ndkdemo_MainActivity_BIND_NOT_FOREGROUND 4L
#undef com_example_user_ndkdemo_MainActivity_BIND_WAIVE_PRIORITY
#define com_example_user_ndkdemo_MainActivity_BIND_WAIVE_PRIORITY 32L
#undef com_example_user_ndkdemo_MainActivity_CONTEXT_IGNORE_SECURITY
#define com_example_user_ndkdemo_MainActivity_CONTEXT_IGNORE_SECURITY 2L
#undef com_example_user_ndkdemo_MainActivity_CONTEXT_INCLUDE_CODE
#define com_example_user_ndkdemo_MainActivity_CONTEXT_INCLUDE_CODE 1L
#undef com_example_user_ndkdemo_MainActivity_CONTEXT_RESTRICTED
#define com_example_user_ndkdemo_MainActivity_CONTEXT_RESTRICTED 4L
#undef com_example_user_ndkdemo_MainActivity_MODE_APPEND
#define com_example_user_ndkdemo_MainActivity_MODE_APPEND 32768L
#undef com_example_user_ndkdemo_MainActivity_MODE_ENABLE_WRITE_AHEAD_LOGGING
#define com_example_user_ndkdemo_MainActivity_MODE_ENABLE_WRITE_AHEAD_LOGGING 8L
#undef com_example_user_ndkdemo_MainActivity_MODE_MULTI_PROCESS
#define com_example_user_ndkdemo_MainActivity_MODE_MULTI_PROCESS 4L
#undef com_example_user_ndkdemo_MainActivity_MODE_PRIVATE
#define com_example_user_ndkdemo_MainActivity_MODE_PRIVATE 0L
#undef com_example_user_ndkdemo_MainActivity_MODE_WORLD_READABLE
#define com_example_user_ndkdemo_MainActivity_MODE_WORLD_READABLE 1L
#undef com_example_user_ndkdemo_MainActivity_MODE_WORLD_WRITEABLE
#define com_example_user_ndkdemo_MainActivity_MODE_WORLD_WRITEABLE 2L
#undef com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_DIALER
#define com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_DIALER 1L
#undef com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_DISABLE
#define com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_DISABLE 0L
#undef com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_SEARCH_GLOBAL
#define com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_SEARCH_GLOBAL 4L
#undef com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_SEARCH_LOCAL
#define com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_SEARCH_LOCAL 3L
#undef com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_SHORTCUT
#define com_example_user_ndkdemo_MainActivity_DEFAULT_KEYS_SHORTCUT 2L
#undef com_example_user_ndkdemo_MainActivity_RESULT_CANCELED
#define com_example_user_ndkdemo_MainActivity_RESULT_CANCELED 0L
#undef com_example_user_ndkdemo_MainActivity_RESULT_FIRST_USER
#define com_example_user_ndkdemo_MainActivity_RESULT_FIRST_USER 1L
#undef com_example_user_ndkdemo_MainActivity_RESULT_OK
#define com_example_user_ndkdemo_MainActivity_RESULT_OK -1L
#undef com_example_user_ndkdemo_MainActivity_HONEYCOMB
#define com_example_user_ndkdemo_MainActivity_HONEYCOMB 11L
#undef com_example_user_ndkdemo_MainActivity_MSG_REALLY_STOPPED
#define com_example_user_ndkdemo_MainActivity_MSG_REALLY_STOPPED 1L
#undef com_example_user_ndkdemo_MainActivity_MSG_RESUME_PENDING
#define com_example_user_ndkdemo_MainActivity_MSG_RESUME_PENDING 2L
/*
 * Class:     com_example_user_ndkdemo_MainActivity
 * Method:    hello
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_example_user_ndkdemo_MainActivity_hello
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

main.cpp:

#include <com_example_user_ndkdemo_MainActivity.h>    

/*
 * Class:     com_example_user_ndkdemo_MainActivity
 * Method:    hello
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_example_user_ndkdemo_MainActivity_hello
  (JNIEnv *env, jobject obj){

  return (*env)->NewStringUTF(env, "hello from JNI");
}

Android.mk：

LOCAL_PATH := $(call my-dir)

include #(CLEAR_VARS)

LOCAL_MODULE := hello
LOCAL_LDLIBS += -llog
LOCAL_SRC_FILES := main.cpp

include $(BUILD_SHARED_LIBRARY)

Application.mk：

APP_ABI:=all

build.gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.0"

    defaultConfig {
        applicationId "com.example.user.ndkdemo"
        minSdkVersion 19
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"

        ndk{
            moduleName ="hello"
        }
    }

    sourceSets.main {
        jni.srcDirs = [] //disable automatic ndk-build call
        jniLibs.srcDir 'src/main/libs'
    }


    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.0.0'
}

local.properties：

## This file is automatically generated by Android Studio.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
#
# This file must *NOT* be checked into Version Control Systems,
# as it contains information specific to your local configuration.
#
# Location of the SDK. This is only used by Gradle.
# For customization when using a Version Control System, please read the
# header note.
#Thu Nov 19 12:40:02 PST 2015
sdk.dir=C\:\\Users\\user\\AppData\\Local\\Android\\sdk
ndk.dir=C\:\\Users\\user\\AppData\\Local\\Android\\android-ndk-r10e

grandle.properties：

# Project-wide Gradle settings.

# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.

# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html

# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx10248m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8

# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true

android.useDeprecatedNdk=true

因此，当我通过键入以下内容运行 ndk 构建时：“C:\Users\user\AppData\Local\Android\android-ndk-r10e\ndk-build.cmd”之后，我在 Android Studio 终端中看不到任何文本窗口消息。所以我以为一切正常，但是当我在我的 android 手机上运行该项目时，我的手机上弹出消息说“不幸的是，NDKDemo 已停止。”我检查了 Android Studio Android windows 消息：它说“找不到”libshel​​lo.so”但我没有任何 .so 文件，因为我从头开始创建这个项目。

请让我知道我做错了什么。谢谢。

【问题讨论】：

    标签： android android-ndk


    【解决方案1】：

    如果对你有用的话，我可以提到的 3 件事请与你核对。

    1。 按照我的 JNI .cpp 文件中的语法，它对我有用。

    env-> NewStringUTF ( "Hellofrom JNI!");

    2。 我不认为

    ndk{
  moduleName ="hello"
        }

    在 build.gradle 文件中是必需的，正如您已经在 Android.mk 中声明的那样

    1. 您的模块名称和 JNI 方法名称是相同的“hello”，您应该避免这种差异。

    【讨论】：

      猜你喜欢
      • 2015-02-11
      • 2013-10-11
      • 2012-01-25
      • 2016-02-14
      • 1970-01-01
      • 2017-01-23
      • 1970-01-01
      • 1970-01-01
      • 2020-08-21
      相关资源
      最近更新 更多
      热门标签
      Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode