iOS 使用NSSetUncaughtExceptionHandler收集Crash
在iOS程序崩溃时,一般我们是用Bugtags、Bugly、友盟等第三方收集崩溃,其实官方提供的NSUncaughtExceptionHandler来收集crash信息。实现方式如下:
自定义一个UncaughtExceptionHandler类,在.h中:
@interface CustomUncaughtExceptionHandler : NSObject
+ (void)setDefaultHandler;
+ (NSUncaughtExceptionHandler *)getHandler;
@end
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在.m中实现:
#import "CustomUncaughtExceptionHandler.h"
// 沙盒的地址
NSString * applicationDocumentsDirectory() {
return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}
// 崩溃时的回调函数
void UncaughtExceptionHandler(NSException * exception) {
NSArray * arr = [exception callStackSymbols];
NSString * reason = [exception reason]; // // 崩溃的原因 可以有崩溃的原因(数组越界,字典nil,调用未知方法...) 崩溃的控制器以及方法
NSString * name = [exception name];
NSString * url = [NSString stringWithFormat:@"crash报告\nname:%@\nreason:\n%@\ncallStackSymbols:\n%@",name,reason,[arr componentsJoinedByString:@"\n"]];
NSString * path = [applicationDocumentsDirectory() stringByAppendingPathComponent:@"crash.txt"];
// 将一个txt文件写入沙盒
[url writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];
}
@implementation CustomUncaughtExceptionHandler
+ (void)setDefaultHandler {
NSSetUncaughtExceptionHandler(&UncaughtExceptionHandler);
}
+ (NSUncaughtExceptionHandler *)getHandler {
return NSGetUncaughtExceptionHandler();
}
@end
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这样我们就实现好了一个自定义UncaughtExceptionHandler类,接下来只需要在合适的地方获取crash文件以及传到服务器上去即可,如下所示:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
//崩溃日志
[CustomUncaughtExceptionHandler setDefaultHandler];
//获取崩溃日志,然后发送
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *dataPath = [path stringByAppendingPathComponent:@"crash.txt"];
NSData *data = [NSData dataWithContentsOfFile:dataPath];
if (data != nil) {
//发送崩溃日志
NSLog(@"crash了:%@",data);
}
}
链接:https://juejin.cn/post/6953142642746064910