NDK调试

一.安装

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.

二.遇到问题

项目右键->属性->c/c++常规->Code Analysis，选择"Use project settings"  中的方法无法被解析（Method cannot be resolved）取消选择，应用->确定，然后刷新、清理、刷新、build项目。

三.ADT版本

  完成上面所有步骤后，仍然会出现问题。后来发现是ADT的版本问题，在开启eclipse的时候已经有提示需要更换的版本，更换ADT版本为ADT-22.6.2   。

  下载地址：http://download.csdn.net/detail/jasonsw/7111013

四.延迟代码

  gdbserver调试会话需要时间，如果很快的执行完c代码，调试就没有意义了

 可以增加

 

    try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        android.os.Debug.waitForDebugger();