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我嘗試動態地添加對象到NSArray。 0錯誤出現在XCode中。我不明白這個錯誤與循環和NSMutableArray中的AddObject
但是,IOS模擬器會生成錯誤並關閉。
我的代碼的靜態版本正常工作。
所以我不明白錯誤在哪裏。
靜態版本:
candyArray = [NSArray arrayWithObjects:
[Candy candyOfCategory:@"chocolate" name:@"chocolate bar"],
[Candy candyOfCategory:@"chocolate" name:@"chocolate chip"],
[Candy candyOfCategory:@"chocolate" name:@"dark chocolate"],
[Candy candyOfCategory:@"hard" name:@"lollipop"],
[Candy candyOfCategory:@"hard" name:@"candy cane"],
[Candy candyOfCategory:@"hard" name:@"jaw breaker"],
[Candy candyOfCategory:@"other" name:@"caramel"],
[Candy candyOfCategory:@"other" name:@"sour chew"],
[Candy candyOfCategory:@"other" name:@"peanut butter cup"],
[Candy candyOfCategory:@"other" name:@"gummi bear"], nil];
動態版:
// get JSON data from URL
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http:///?view=json"]];
NSURLResponse *resp = nil;
NSError *error = nil;
NSData *response = [NSURLConnection sendSynchronousRequest: theRequest returningResponse: &resp error: &error];
NSString *jsonString = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding]; //your json string from URL request
// PARSINF JSON VALUE
NSDictionary *jsonDictionary = [jsonString JSONValue];
NSDictionary *players = [jsonDictionary objectForKey:@"user"];
// Creating mutablearray who will receive the inputs of json:
NSMutableArray *nameInsert = [[NSMutableArray alloc] init];
for (NSDictionary *player in players)
{
NSString *item = [player objectForKey:@"name"];
[nameInsert addObject: [Candy candyOfCategory:@"chocolate" name:item" ]];
}
candyArray = nameInsert;
如果循環中沒有任何IOS模擬器的作品。
當然,應用程序中沒有任何內容。
你能至少發佈錯誤? – WDUK
''nameInsert addObject:[Candy candyOfCategory:@「chocolate」name:item「]];'最後一個報價是做什麼的 - 是直接複製粘貼嗎? – sjwarner
您是否在'NSString'上使用了一個類別?'NSString'沒有任何方法'JSONValue'! – HAS