使用NSException归档崩溃信息并上传服务器

使用NSException归档崩溃信息并上传服务器

• 当app在即将崩溃的时候,我们可以通过NSException来记录导致程序崩溃的原因.
• 首先,创建一个CrashManager类来管理当前app的崩溃信息
  .h文件中

/**崩溃类型 */
@property (nonatomic,strong) NSString *name;

/**崩溃原因 */
@property (nonatomic,strong) NSString *reason;

/**栈信息 */
@property (nonatomic,strong) NSString *className;

/**根据需要选择需不需要创建单例*/
+ (instancetype)shareCrashManager;
/**保存*/
+ (void)save:(CrashManager *)manager;
/**读取*/
+ (void)read:(void (^)(BOOL,CrashManager *))block;
/**上传服务器*/
+ (void)postServer:(CrashManager *)manager;

当然,要添加NSCoding;
.m文件中

#define CrashFilePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0] stringByAppendingPathComponent:@"CrashManager.data"]
@implementation CrashManager

static CrashManager * _instance = nil;

+ (instancetype)shareCrashManager
{
    return _instance;
}
+(void)load
{
    _instance = [[self alloc] init];
}
+ (instancetype)alloc
{
    if (_instance) {
        @throw [NSException exceptionWithName:@"NSInternalInconsistencyException" reason:@"There can only be one Person instance." userInfo:nil];
    }
    return [super alloc];
}
+ (void)save:(CrashManager *)manager
{
    [NSKeyedArchiver archiveRootObject:manager toFile:CrashFilePath];
}
+ (void)read:(void (^)(BOOL,CrashManager *))block
{
    CrashManager * manager =(CrashManager *)[NSKeyedUnarchiver unarchiveObjectWithFile:CrashFilePath];
    if ([manager.name isEqualToString:@"(null)"] || manager.name == nil) {
        block(NO,manager);
    }else block(YES,manager);
 
}
+ (void)postServer:(CrashManager *)manager
{
    //上传
    NSLog(@"上传服务器");
    //上传成功后删除本地文件
    NSFileManager * fileManager =[NSFileManager defaultManager];
    BOOL existsFile =  [fileManager fileExistsAtPath:CrashFilePath];
    if (existsFile) {
        [fileManager removeItemAtPath:CrashFilePath error:nil];
    }
}
- (void)encodeWithCoder:(NSCoder *)aCoder
{
    [aCoder encodeObject:_name forKey:@"name"];
    [aCoder encodeObject:_reason forKey:@"reason"];
    [aCoder encodeObject:_className forKey:@"className"];
}
- (instancetype)initWithCoder:(NSCoder *)aDecoder
{
    if (self = [super init]) {
        _name = [aDecoder decodeObjectForKey:@"name"];
        _reason = [aDecoder decodeObjectForKey:@"reason"];
        _className = [aDecoder decodeObjectForKey:@"className"];
    }
    return self;
}

这样,用来管理崩溃信息的Model就创建完成
然后在AppDelegate中添加NSException;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    NSSetUncaughtExceptionHandler(&handler);
    [CrashManager read:^(BOOL success, CrashManager *manager) {
        if (success) {
            NSLog(@"crash:===%@",manager.name);
            [CrashManager postServer:manager];
        }else{
            NSLog(@"no crash");
        }
    }];
    return YES;
}

void handler(NSException * exception){

    NSArray * arr = [exception callStackSymbols];
    NSString * reason = [exception reason];
    NSString * name = [exception name];

    CrashManager * manager = [CrashManager shareCrashManager];
    manager.name = name;
    manager.className = arr[3];
    manager.reason = reason;
    [CrashManager save:manager];
    
}

这样就完成了,总体思路是程序在即将崩溃的时候讲崩溃信息归档到cache文件中,然后在程序下一次启动的时候将cache中的data文件传到服务器并删除.