答案
当我调用fetchDailyForecast它看起来像
时，我犯了一个错误 [self.fetchController fetchDailyForecast:self.currentLocation.coordinate completionBlock:^(DailyModel *newModel) {
_dailyCondition = newModel;
NSLog(@"newModel = %@", _dailyCondition);
}];
END
我尝试使用bloc＆s等等但是有一个bad_access exaction。首先，我从MangeDataController.m
调用方法[self.fetchController fetchDailyForecast：self.currentLocation.coordinate completionBlock：（void（^）（DailyModel *））_ dailyCondition];
其中dailyCondition是DailyModel的实例。 其次，这是FetchController.m中的 fetchDailyForecast 方法实现。
-(void)fetchDailyForecast:(CLLocationCoordinate2D)coordinate completionBlock:(void(^)(DailyModel *))completionBlock {
NSString *urlString = [NSString stringWithFormat:@"http://api.openweathermap.org/data/2.5/forecast/daily?lat=%f&lon=%f&units=imperial&cnt=7%@", coordinate.latitude, coordinate.longitude, _key];
urlString = [urlString stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]];
[self fetchJSONfromURL:urlString completionBlock:^(NSDictionary *weatherData) {
completionBlock([[DailyModel alloc] dataFromDictionaryDaily:weatherData]); --- (here the bad access);
}];
}
第三，在 fatchDailyForecast 中，我在这里调用 fetchJSONfromURL 实现：
-(void)fetchJSONfromURL:(NSString *)urlString completionBlock:(void (^)(NSDictionary *))completionBlock {
NSLog(@"url = %@", urlString);
[_manager GET:urlString parameters:nil progress:nil success:^(NSURLSessionTask *task, id responceObject) {
if (responceObject) {
completionBlock(responceObject);
} else {
NSLog(@"responce object error");
}
}
failure:^(NSURLSessionTask *operation, NSError *error){
NSLog(@"error %@", error);
}];
}
P.S。我认为我的错误是我试图通过一天 _dailyCondition ，但应该传递一些不同的东西。谢谢你的帮助！
**编辑------- DailyModel.m **
#import "DailyModel.h"
@implementation DailyModel
-(id)dataFromDictionaryDaily:(NSDictionary *)dic {
NSArray *arrayWithDictionarys = [dic objectForKey:@"list"];
NSDictionary *dictionaryWithWeekDays = [self indexKeyedDictionaryFromArray:arrayWithDictionarys];
// NSLog(@"dictionary with dayweeks = %@", dictionaryWithWeekDays);
_arrayWithTemp = [NSMutableArray new];
_arrayWithDate = [NSMutableArray new];
_arrayWithIcon = [NSMutableArray new];
for (int i = 0; i <= 6; i++) {
NSNumber* key = [NSNumber numberWithInt:i];
[self addValuesToArrayWithTemp:dictionaryWithWeekDays key:key index:i];
[self addValuesToArrayWithDate:dictionaryWithWeekDays key:key index:i];
[self addValueToArrayWithImage:dictionaryWithWeekDays key:key index:i];
}
return self;
}
- (NSDictionary *) indexKeyedDictionaryFromArray:(NSArray *)array
{
NSMutableDictionary *mutableDictionary = [[NSMutableDictionary alloc] init];
[array enumerateObjectsUsingBlock:
^(id obj, NSUInteger idx, BOOL *stop){
NSNumber *index = [NSNumber numberWithInteger:idx];
[mutableDictionary setObject:obj forKey:index];
}];
NSDictionary *result = [NSDictionary.alloc initWithDictionary:mutableDictionary];
return result;
}
-(void) addValuesToArrayWithTemp:(NSDictionary *)inputDic key:(NSNumber *)key index:(int)ind {
NSDictionary *currentDic = [inputDic objectForKey:key];
NSDictionary *temp = [currentDic objectForKey:@"temp"];
_tempLow = [temp objectForKey:@"min"];
_tempHigh = [temp objectForKey:@"max"];
_tempLow = [self convertToCelsius:_tempLow];
_tempHigh = [self convertToCelsius:_tempHigh];
NSString *tempString = [NSString stringWithFormat:@"%.02f / %.02f", _tempLow.floatValue , _tempHigh.floatValue];
[_arrayWithTemp insertObject:tempString atIndex:ind];
}
-(NSNumber *)convertToCelsius:(NSNumber *)far {
double f = (far.doubleValue - 32) / 1.8;
NSNumber *celsius = [NSNumber numberWithDouble:f];
return celsius;
}
-(void) addValuesToArrayWithDate:(NSDictionary *)inputDic key:(NSNumber *)key index:(int)ind {
NSDictionary *currenDic = [inputDic objectForKey:key];
NSNumber *tempNumber = [currenDic objectForKey:@"dt"];
double unixTimeStamp = tempNumber.doubleValue;
NSString* weekDay = [self convertToWeekDay:unixTimeStamp];
[_arrayWithDate insertObject:weekDay atIndex:ind];
}
-(NSString *)convertToWeekDay:(double) unixtime {
NSTimeInterval _interval = unixtime;
NSDate *date = [NSDate dateWithTimeIntervalSince1970:_interval];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setLocale:[NSLocale currentLocale]];
[formatter setDateFormat:@"EEEE"];
NSString *dateString = [formatter stringFromDate:date];
return dateString;
}
-(void) addValueToArrayWithImage:(NSDictionary *)inputDic key:(NSNumber *)key index:(int)ind {
NSDictionary *currenDic = [inputDic objectForKey:key];
NSArray *weatherArray = [currenDic objectForKey:@"weather"];
NSDictionary *weather = weatherArray[0];
_icon = [weather objectForKey:@"icon"];
_icon = [self currentImageString:_icon];
[_arrayWithIcon insertObject:_icon atIndex:ind];
}
-(NSString *)currentImageString:(NSString *)ico {
NSDictionary *dic = @{
@"01d" : @"weather-clear",
@"02d" : @"weather-few",
@"03d" : @"weather-few",
@"04d" : @"weather-broken",
@"09d" : @"weather-shower",
@"10d" : @"weather-rain",
@"11d" : @"weather-tstorm",
@"13d" : @"weather-snow",
@"50d" : @"weather-mist",
@"01n" : @"weather-moon",
@"02n" : @"weather-few-night",
@"03n" : @"weather-few-night",
@"04n" : @"weather-broken",
@"09n" : @"weather-shower",
@"10n" : @"weather-rain-night",
@"11n" : @"weather-tstorm",
@"13n" : @"weather-snow",
@"50n" : @"weather-mist",
};
ico = [dic objectForKey:ico];
return ico;
}
@end
编辑2
我将条件添加到（void）fetchDailyForecast：（CLLocationCoordinate2D）坐标completionBlock：（void（^）（DailyModel *））completionBlock ，现在应用程序没有崩溃，但它＆＃39 ; s仍然不起作用，nslog说@＆＃34;没有＆＃34;
[self fetchJSONfromURL：urlString completionBlock：^（NSDictionary * weatherData）{if（completionBlock）{completionBlock（model = [[DailyModel alloc] dataFromDictionaryDaily：weatherData]）; } else { 的NSLog（@＆＃34;无＆＃34）; }};