使用JSON在Objective-C

Question

NSString *urlString = @"https://www.googleapis.com/customsearch/v1?key=AIzaSyDochCep4-pyP_VyC-yTxqvVXz2oUccvOQ&cx=015184184090674442837:dkitjh1tmc8&q=";   
urlString = [urlString stringByAppendingString:appDelegate.globalWordName]; //appdelegate.globalwordname is required images name   
urlString = [urlString stringByAppendingString:@"&searchType=image&safe=high&imgSize=medium&start=1&num=10&alt=json"]; 

（或）

NSString *urlString = @"https://www.googleapis.com/customsearch/v1?key=AIzaSyBfsopy4kXXiZ44BRUE1pVMyacSUa0Bn1E&cx=cx=011683172338421882045:tcle_wvfko8&q="; 
urlString = [urlString stringByAppendingString:appDelegate.globalWordName]; 
urlString = [urlString stringByAppendingString:@"&searchType=image&safe=high&imgSize=medium&start=1&num=10&alt=json"]; 

（或）

NSString *urlString = @"https://ajax.googleapis.com/ajax/services/search/images?v=1.0&q="; 
urlString = [urlString stringByAppendingString:appDelegate.globalWordName]; 
urlString = [urlString stringByAppendingString:@"&rsz=8"]; 

我使用上述三種格式，但我沒有得到任何如何搜索圖片結果。執行上述查詢後，它僅返回null。請幫我任何一個我做錯了什麼。

Answer 1

確保API密鑰（key =？）和自定義搜索引擎ID（cx =？）是否正確。