如何存儲從Facebook圖形檢索圖像到NSUserDefaults

Question

我試圖在從圖形api鏈接中檢索後，將facebook用戶的圖像存儲在NSUserDefault中。 這是我要送鏈接：

NSString *fbuid = [NSString stringWithFormat:@"%@",[result objectForKey:@"id"]]; 

    NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?", fbuid]]; 

，然後用這個網址我這樣做：

NSData *data = [NSData dataWithContentsOfURL:url]; 
NSString *stringImage = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength]; 

的將其存儲在用戶的默認值：

[[NSUserDefaults standardUserDefaults]setObject:url forKey:@"dp"]; 

Answer 1

在這裏你可以用多種方式使用這個概念。例如

一個

只是保存在idNSUserDefaults，你需要訪問這就像

NSString *fbuid = [NSString stringWithFormat:@"%@",[result objectForKey:@"id"]]; 
[[NSUserDefaults standardUserDefaults]setObject: fbuid forKey:@"dp"]; 
[[NSUserDefaults standardUserDefaults]synchronize]; 

檢索

//這裏在使用圖像顯示一樣這

UIImage *image = [UIImage imageWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?", [[NSUserDefaults standardUserDefaults]objectForKey:@"dp"]]]]; 

兩個 的URL字符串保存到NSUserDefaults，就像

NSString *fbuid = [NSString stringWithFormat:@"%@",[result objectForKey:@"id"]]; 
    NSString *URLStr=[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?", fbuid]]; 

[[NSUserDefaults standardUserDefaults]setObject: URLStr forKey:@"dp"]; 
[[NSUserDefaults standardUserDefaults]synchronize]; 

檢索

UIImage *image = [UIImage imageWithData: [NSData dataWithContentsOfURL: [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?", [[NSUserDefaults standardUserDefaults]objectForKey:@"dp"]]]];