崩潰日誌工具類的建立

MyCrashExceptionHandler.h

#import <Foundation/Foundation.h>

@interface MyCrashExceptionHandler : NSObject

+ (void)setDefaultHandler;
+ (NSUncaughtExceptionHandler *)getHandler;
+ (void)TakeException:(NSException *) exception;

@end

MyCrashExceptionHandler.m

#import "MyCrashExceptionHandler.h"
 



// 沙盒的地址
NSString * applicationDocumentsDirectory() {
    return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}

// 崩潰時的回撥函式，將崩潰日誌的內容寫入到沙盒路徑
void UncaughtExceptionHandler(NSException * exception) {
    NSArray * arr = [exception callStackSymbols];
    NSString
 
 * reason = [exception reason]; // // 崩潰的原因  可以有崩潰的原因(陣列越界,字典nil,呼叫未知方法...) 崩潰的控制器以及方法
    NSString * name = [exception name];
    NSString * url = [NSString stringWithFormat:@"========異常錯誤報告========\nname:%@\nreason:\n%@\ncallStackSymbols:\n%@",name,reason,[arr componentsJoinedByString:@"\n"]];
    NSString
 
 * path = [applicationDocumentsDirectory() stringByAppendingPathComponent:@"Exception.txt"];
    // 將一個txt檔案寫入沙盒
    [url writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];
}



@implementation MyCrashExceptionHandler

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

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

+ (NSUncaughtExceptionHandler *)getHandler {
    return NSGetUncaughtExceptionHandler();
}

+ (void)TakeException:(NSException *)exception {
    NSArray * arr = [exception callStackSymbols];
    NSString * reason = [exception reason];
    NSString * name = [exception name];
    NSString * url = [NSString stringWithFormat:@"========異常錯誤報告========\nname:%@\nreason:\n%@\ncallStackSymbols:\n%@",name,reason,[arr componentsJoinedByString:@"\n"]];
    NSString * path = [applicationDocumentsDirectory() stringByAppendingPathComponent:@"Exception.txt"];
    [url writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];
}