the key point is "Modified UTF-8" is not like "Regular UTF-8", a legal Rgular UTF8 code sequence may be considered illegal against Modified UTF8. One work around in NDK level is : converting utf8 to native utf16, then use NewString() i…

JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal start byte 0xfe 在使用Jni的JNIEnv->NewStringUTF的时候抛出了异常"JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal start byte 0xfe ".网上搜索了一下,这个异常是由于J…

今天攻克了JNI WARNING: illegal start byte 0x81这个问题. 问题出现的现象是通过jni调用加密方法,调用之后返回密文内容,结果就出现这个问题. 在国外查找一段时间之后.出现这个问题的解决办法在于:使用newStringUTF方法使用的char *数据要求是可见的内容.所以才导致数据不能正常的返回: 所以一般对我们来说.採用NDK进行加密的时候,加密的密文假设是不可见的字符的话,那么就须要对数据进行一次BASE64编码,在返回String. 或者直接使用byte返…

所谓坑, 就是文档中没有标明的特别需要处理的细节, 工作中会被无故的卡住各种令人恼火的问题. 包括系统级的bug和没有文档化的限制. 继Android的各种坑后, 现在做Amazon平台, 遇到的坑很多, 这里记录一下备忘: 先汇总下Android Native下的各种问题, 当然有些限制有明确文档说明,不算坑,但是限制太多还是很不爽: android平台下的某些限制: android下的各种坑 (我的C/C++/汇编/计算机原理博客) OBB的各种bug: OBB的解决方案 arm gcc t…

今天突然接到客服那边的反馈说,有玩家反馈进游戏后不久就崩溃了,我先是怀疑网络问题,因为一连接聊天成功后就挂了.之后用logcat抓日志,发现挂在jni那里了 JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal start byte 0xf0 string: '' in call to NewStringUTF from void org.cocos2dx.lib.Cocos2dxRendere…

原文网址:http://blog.csdn.net/shulianghan/article/details/18964835 NDK项目源码地址 : -- 第一个JNI示例程序下载 : GitHub - https://github.com/han1202012/NDKHelloworld.git -- Java传递参数给C语言实例程序 : GitHub - https://github.com/han1202012/NDKParameterPassing.git --C语言回调Java方法示例…

NDK项目源码地址 : -- 第一个JNI示例程序下载 : GitHub - https://github.com/han1202012/NDKHelloworld.git -- Java传递参数给C语言实例程序 : GitHub - https://github.com/han1202012/NDKParameterPassing.git --C语言回调Java方法示例程序 : GitHub - https://github.com/han1202012/NDK_Callback.git --…

NDK项目源码地址 : -- 第一个JNI示例程序下载 : GitHub - https://github.com/han1202012/NDKHelloworld.git -- Java传递参数给C语言实例程序 : GitHub - https://github.com/han1202012/NDKParameterPassing.git --C语言回调Java方法示例程序 : GitHub - https://github.com/han1202012/NDK_Callback.git --…

写在前面 记录一下 OpenGL ES Android 开发的入门教程.逻辑性可能不那么强,想到哪写到哪.也可能自己的一些理解有误. 参考资料: LearnOpenGL CN Android官方文档 <OpenGL ES应用开发实践指南Android卷> <OpenGL ES 3.0 编程指南第2版> 一.前言 目前android 4.3或以上支持opengles 3.0,但目前很多运行android 4.3系统的硬件能支持opengles 3.0的也是非常少的.不过,opengl…

base64coder 可以查看官网:   http://www.source-code.biz/base64coder/java/ 我所涉及到的  base64coder调用: 某天,因需要修改Properties文件中的部分内容,而该内容是base64做过加密的,所有要进行解密.修改.加密.存储, 主要对 gui_preferences 中的color 进行修改,gui_preferences 在Properties文件中如下:   gui_preferences = rO0ABXNyABF…

通过这个编码类我们可以将图片转换为这个编码的字符串,上传到服务器. 这个编码是来自小马的一个范例,我看了下挺有用的.所以就放上来以备不时之需. 先说下用法: /** * 下面注释的方法是将裁剪之后的图片以Base64Coder的字符方式上 * 传到服务器,QQ头像上传采用的方法跟这个类似 */ ByteArrayOutputStream stream = new ByteArrayOutputStream(); photo.compress(Bitmap.CompressFormat.JPEG,…

转载:https://blog.csdn.net/hui12581/article/details/44832651 Chap1:JNI完全手册... 3 Chap2:JNI-百度百科... 11 Chap 3:javah命令帮助信息... 16 Chap 4:用javah产生一个.h文件... 17 Chap5:jni教程(very very good) 19 Chap6: JNI传递返回值... 26 15.2.2.3 传递字符串... 28 15.2.2.4 传递整型数组... 29 15…

方法注册好后要经过哪些路 Android一个异常捕获项目 https://github.com/xroche/coffeecatch coffeecatch CoffeeCatch, a tiny native POSIX signal catcher (especially useful for JNI code on Android/Dalvik, but it can be used in non-Java projects) It allows to "gracefully"…

Chap1:JNI完全手册... 3 Chap2:JNI-百度百科... 11 Chap 3:javah命令帮助信息... 16 Chap 4:用javah产生一个.h文件... 17 Chap5:jni教程(very very good) 19 Chap6: JNI传递返回值... 26 15.2.2.3 传递字符串... 28 15.2.2.4 传递整型数组... 29 15.2.2.5 传递字符串数组... 30 15.2.2.6 传递对象数组... 31 Chap7:Jni中C++和Ja…

文章地址  http://developer.android.com/training/articles/perf-jni.html JNI Tips JNI is the Java Native Interface. It defines a way for managed code (written in the Java programming language) to interact with native code (written in C/C++). It's vendor-ne…

[This post is by Elliott Hughes, a Software Engineer on the Dalvik team. — Tim Bray] If you don’t write native code that uses JNI, you can stop reading now. If you do write native code that uses JNI, you really need to read this. What’s changing, and…

JNI Tips In this document JavaVM and JNIEnv Threads jclass, jmethodID, and jfieldID Local and Global References UTF-8 and UTF-16 Strings Primitive Arrays Region Calls Exceptions Extended Checking Native Libraries 64-bit Considerations Unsupported Fea…

JNI Tips 1.In this document JavaVM and JNIEnv Threads jclass, jmethodID, and jfieldID Local and Global References UTF-8 and UTF-16 Strings Primitive Arrays Region Calls Exceptions Extended Checking Native Libraries 64-bit Considerations Unsupported F…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]"…

1.题目: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)…

题目简述: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]"…

Generate Parentheses Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]"…

问题: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]&…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]"…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. Have you met this question in a real interview?     Example The brackets must close in the correct order, "()" and "()[]{…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]"…

括号匹配 Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]"…

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]"…