Using the NDK plugin

http://tools.android.com/recent/usingthendkplugin

Using the NDK plugin

posted Jul 2, 2012, 7:16 PM by Siva Velusamy
ADT 20 includes an NDK plugin that provides support for building and debugging NDK projects in Eclipse. This document describes how to install and use the NDK plugin.

Installation

The NDK plugin currently works with CDT 7.0.2 or CDT 8.0.2.
  1. Download Eclipse for Java.
  2. Install CDT from Eclipse update site http://download.eclipse.org/tools/cdt/releases/indigo.
  3. Install Android SDK + NDK Plugins from Eclipse update site https://dl-ssl.google.com/android/eclipse/
Using the NDK Plugin

1. First set the path to SDK and NDK:

Eclipse -> Window -> Preferences -> Android -> set path to SDK

Eclipse -> Window -> Preferences -> Android -> NDK -> set path to the NDK


2. Right click on an Android project and select Android Tools -> Add native support.
Note that you will not be able to add native support if the project already has C/C++ nature.

At this point, you will be able to build your applications using Project -> Build All.

Debugging native applications

1. Update your build config to include “NDK_DEBUG = 1”.

Right click project -> properties -> C/C++ Build:

2. Set a breakpoint in your C code.
3. Right click on your project, select Debug As -> Android Native Application

Note: There is a delay of a few seconds between when the activity is launched and when native debugging starts. If your code is already executed by that point, then you won’t see the breakpoint being hit. So either put a breakpoint in code that is called repetitively, or make sure that you call JNI code after you see that ndk-gdb has connected.

Known Issues

1. Eclipse does not automatically find the include paths to all the NDK headers on Windows. This issue will be fixed in the next update (20.0.1) when it is released.
2. Eclipse does not automatically find the include paths with CDT 8.1.0 (Juno). This issue is tracked in Bug 33788.


<think>好的,我现在需要帮助用户解决Android Gradle插件版本与compileSdk不匹配的警告问题。首先,我得回忆一下这个问题的常见原因。通常,当compileSdkVersion设置得比较高,比如34,而Android Gradle插件版本过低时,就会出现版本不兼容的警告。用户可能已经将compileSdkVersion升级到了34,但插件版本没有相应更新。 接下来,我需要确定如何更新Android Gradle插件。根据经验,这通常涉及两个文件的修改:项目根目录下的build.gradle和模块级的build.gradle。用户可能需要检查项目根目录的build.gradle中的dependencies部分,确保classpath指向最新的插件版本。例如,对于compileSdk 34,可能需要使用8.0.0或更高版本的插件。 另外,用户可能还需要检查gradle-wrapper.properties文件,确认Gradle的版本是否与新的插件兼容。比如,Android Gradle插件8.0.0通常需要Gradle 8.0及以上版本。如果Gradle版本过旧,也会导致问题。 然后,用户可能还需要在模块的build.gradle中设置compileSdkVersion和targetSdkVersion为34,并且调整其他相关配置,比如buildToolsVersion是否合适。如果用户遇到了原生库的问题,可能还需要按照引用[4]的建议,在清单文件中添加extractNativeLibs="true"来打包压缩后的原生库。 最后,用户更新完配置后,需要同步项目并重新构建,以确认警告是否解决。如果还有问题,可能需要检查是否有其他依赖项不兼容,或者清理项目重新构建。 整个过程中,需要注意引用相关的文档,比如引用[3]提到Gradle和插件独立于Android Studio运行,所以确保命令行也能构建成功很重要。同时,引用[1]提到的Gradle Wrapper机制,用户应该使用正确的Gradle版本,避免环境问题。 现在,我需要将这些步骤整理成清晰的中文回答,并生成相关问题供用户参考。</think>### 解决Android Gradle插件版本与compileSdk不匹配的警告 #### 步骤1:更新Android Gradle插件版本 在项目根目录的`build.gradle`文件中,修改`dependencies`中的插件版本。当前支持`compileSdk 34`的插件版本需≥**8.0.0**(如8.0.0/8.1.0): ```groovy dependencies { classpath "com.android.tools.build:gradle:8.1.0" // 修改此处版本号 } ``` 若需使用最新版本,可查看[Android Gradle插件官方文档](https://developer.android.com/build/releases/gradle-plugin)[^3]。 --- #### 步骤2:同步Gradle版本 在`gradle-wrapper.properties`中指定与插件兼容的Gradle版本。例如: ```properties distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip ``` > **版本对应关系**: > - AGP 8.0.x → Gradle 8.0+ > - AGP 8.1.x → Gradle 8.0+ --- #### 步骤3:配置模块级build.gradle 在模块的`build.gradle`中设置`compileSdk`和`targetSdk`: ```groovy android { compileSdk 34 defaultConfig { targetSdk 34 // 若使用NDK,需检查buildToolsVersion // buildToolsVersion "34.0.0" } } ``` --- #### 步骤4:处理原生库(可选) 若项目包含原生库,在`AndroidManifest.xml`中添加: ```xml <application android:extractNativeLibs="true" ...> </application> ``` 此配置可避免因插件版本更新导致的`.so`文件打包异常[^4]。 --- #### 验证与清理 1. 点击Android Studio的**Sync Project with Gradle Files**按钮 2. 执行`./gradlew cleanBuildCache`清理缓存 3. 重新构建项目观察警告是否消失 ---
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