在我们开发的app中, 不可避免的, 有时候用户使用软件会崩溃. 我们就需要捕获异常, 可以在入口类中加入相应的代码, 可以在每次用户打开程序的时候, 检查一下沙盒中是否有崩溃日志, 如果有, 可以发送给服务器, 方便改进软件.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
ExceptionHandler 捕获异常的宏定义
// 这里反馈给服务器
self.window.rootViewController = [ViewController new];
return YES;
}
宏定义
#define ExceptionHandler [ZYExceptionHandler caughtExceptionHandler];
#import "ZYExceptionHandler.h"
#include <libkern/OSAtomic.h>
#include <execinfo.h>
@implementation ZYExceptionHandler
+ (void)caughtExceptionHandler{
//指定crash的处理方法。
NSSetUncaughtExceptionHandler(& UncaughtExceptionHandler);
}
+ (void)fileCreate{
NSString *path = [ZYExceptionHandler exceptionPath];
NSFileManager *manager =[NSFileManager defaultManager];
//文件不存在时创建
if (![manager fileExistsAtPath:path])
{
NSString *dateString = [ZYExceptionHandler currentTime];
NSString *logStr = [NSString stringWithFormat:@"================ 文件创建时间：%@ ================",dateString];
NSData *data = [logStr dataUsingEncoding:NSUTF8StringEncoding];
[data writeToFile:path atomically:YES];
}
}
void UncaughtExceptionHandler(NSException *exception) {
/**
* 获取异常崩溃信息
*/
//在这里创建一个接受crash的文件
[ZYExceptionHandler fileCreate];
NSArray *callStack = [exception callStackSymbols];
NSString *reason = [exception reason];
NSString *name = [exception name];
NSString *dateString = [ZYExceptionHandler currentTime];
NSString *systemName = [[UIDevice currentDevice] systemName];
NSString *strModel = [[UIDevice currentDevice] model];
NSDictionary* infoDict =[[NSBundle mainBundle] infoDictionary];
NSString *bundleIdentifier = infoDict[@"CFBundleIdentifier"];
NSString* versionNum = [infoDict objectForKey:@"CFBundleShortVersionString"];
NSString *content = [NSString stringWithFormat:@" ========异常错误报告======== 错误时间:%@ 系统：%@ 设备:%@ 当前版本:%@ 当前唯一标示符:%@ 错误名称:%@ 错误原因: %@ callStackSymbols: %@ ========异常错误结束======== ",dateString,systemName,strModel,versionNum,bundleIdentifier,name,reason,[callStack componentsJoinedByString:@" "]];
NSString *path = [ZYExceptionHandler exceptionPath];
NSFileHandle *outFile = [NSFileHandle fileHandleForWritingAtPath:path];
//找到并定位到outFile的末尾位置(在此后追加文件)
[outFile seekToEndOfFile];
[outFile writeData:[content dataUsingEncoding:NSUTF8StringEncoding]];
//关闭读写文件
[outFile closeFile];
}
+ (NSString *)exceptionPath{
NSLog(@"----->>>%@",NSHomeDirectory());
NSString *documents = [NSHomeDirectory()stringByAppendingPathComponent:@"Documents"];
NSString *path = [documents stringByAppendingPathComponent:@"exceptionHandler.txt"];
return path;
}
+ (NSString *)currentTime{
NSDate *date = [NSDate date];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy-MM-dd hh:mm"];
NSString *dateString = [formatter stringFromDate:date];
return dateString;
}
//获取调用堆栈
+ (NSArray *)backtrace
{
void* callstack[128];
int frames = backtrace(callstack, 128);
char **strs = backtrace_symbols(callstack,frames);
NSMutableArray *backtrace = [NSMutableArray arrayWithCapacity:frames];
for (int i=0;i<frames;i++)
{
[backtrace addObject:[NSString stringWithUTF8String:strs[i]]];
}
free(strs);
return backtrace;
}
@end