Objective-C自建崩溃捕获和上传

苹果虽然带了崩溃日志的功能,但是估计没几个人会开启允许,普通用户根本就不知道所谓的开发者对自己有什么作用,还会担心安全问题.所有我们还必须对程序进行一些处理,以获取崩溃日志.本篇文章仅获取了系统崩溃日志的打印,没有对内存方面进行进一步分析.

SDK提供了NSSetUncaughtExceptionHandler类,用来获取系统的崩溃日志.我们通过捕获崩溃日志并上传到服务器,可以发现常见的的崩溃问题,特别是在项目紧张,缺少测试时间的时候可以提供很大的帮助.
通过定义UncaughtExceptionHandler类来捕获并记录崩溃日志.

#import "UncaughtExceptionHandler.h"

NSString *applicationDocumentsDirectory() {
    return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}

void UncaughtExceptionHandler(NSException *exception) {
    NSArray *arr = [exception callStackSymbols];
    NSString *reason = [exception reason];
    NSString *name = [exception name];
    NSString *baseMessage = [NSString stringWithFormat:@"IDENTIFIER_NUMBER:  %@\n OSVERSION:     %@\n PHONE_TYPE:   %@\n APP_VERSION:  %@", IDENTIFIER_NUMBER, PHONE_VERSION, PHONE_TYPE, APP_VERSION];
    NSString *url = [NSString stringWithFormat:@"=============Crash Log=============\n%@\nname:\n%@\nreason:\n%@\ncallStackSymbols:\n%@", baseMessage,
                     name,reason,[arr componentsJoinedByString:@"\n"]];
    NSString *path = [applicationDocumentsDirectory() stringByAppendingPathComponent:@"Exception.txt"];
    [url writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];
}

@implementation BPBUncaughtExceptionHandler

- (NSString *)applicationDocumentsDirectory {
    return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}

+ (void)setDefaultHandler {
    NSSetUncaughtExceptionHandler (&UncaughtExceptionHandler);
}
@end

然后我们需要再定义一个CrashHandler类来将捕获的崩溃日志上传到后台的服务器.上传完成之后再删除文件.

#import "CrashHandler.h"
@implementation BPBCrashHandler

+ (void)uploadCrashLog {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    NSString *filePath = [documentsPath stringByAppendingPathComponent:@"Exception.txt"];
    NSString *str = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
    if (str) {  
        [ServerReqestUtils uploadCrashLogWithContent:str callBack:^(id obj) {
            float code = [obj[@"code"] floatValue];
            if (code == 1000) {  
                NSLog(@"上传成功!");
                [fileManager removeItemAtPath:filePath error:nil];
            }
        }];
    }
}
@end

最后只需要在didFinishLaunchingWithOptions方法内执行这两个方法就可以捕获崩溃日志了.

 [UncaughtExceptionHandler setDefaultHandler];  
 [CrashHandler uploadCrashLog];  

文章整理参考网络文章，如有错误，欢迎讨论指出。