IOS network programming-MBProgressHUD wait indicator

Third-party Wait indicator. MBProgressHUD is a third-party Wait indicator framework. Below are the wait indicator styles provided by MBProgressHUD. They can be divided into two categories: Unknown End Time and known end time. In MBProgressHUD, you can add labels and detailed labels for the wait indicator.

 

650) this. width = 650; "width =" 455 "height =" 615 "src =" http://www.bkjia.com/uploads/allimg/131228/0F2424339-0.jpg "alt =" 9 "class =" aligncenter size-full wp-image-67 "/> 650) this. width = 650; "width =" 456 "height =" 303 "src =" http://www.bkjia.com/uploads/allimg/131228/0F2425c4-1.jpg "alt =" 10 "class =" aligncenter size-full wp-image-68 "/>

 

MBProgressHUD is https://github.com/matej/mbprogresshud. we will download the MBProgressHUD from the source file. h and MBProgressHUD. m is copied to your project. The frameworks on which MBProgressHUD depends are: Foundation. framework, UIKit. framework and CoreGraphics. framework, we need to add these frameworks to the project.

Add the MBProgressHUD wait indicator to the application, and modify the startRequest method code of MasterViewController. m in the master View Controller as follows. Note the bold Section:

 

 
 

  
  
-(Void) startRequest
  
  
 
  
  
{
  
  
 
  
  
// Initialize MBProgressHUD
  
  
 
  
  
MBProgressHUD * hud = [MBProgressHUD showHUDAddedTo: self. view animated: YES];
  
  
 
  
  
Hud. mode = MBProgressHUDModeCustomView;
  
  
 
  
  
Hud. labelText = @ "Loading ";
  
  
 
  
  
NSString * strURL = [[NSString alloc]
  
  
 
  
  
InitWithFormat: @ "http: // iosbook3/mynotes/webservice. php"];
  
  
 
  
  
NSURL * url = [NSURL URLWithString: [strURL URLEncodedString];
  
  
 
  
  
NSString * post;
  
  
 
  
  
If (action = ACTION_QUERY) {// query processing
  
  
 
  
  
Post = [NSString stringWithFormat: @ "email =%@ & type =%@ & action =% @",
  
  
 
  
  
@ "<Your iosbook1.com user email>", @ "JSON", @ "query"];
  
  
 
  
  
} Else if (action = ACTION_REMOVE) {// Delete
  
  
 
  
  
NSIndexPath * indexPath = [self. tableView indexPathForSelectedRow];
  
  
 
  
  
NSMutableDictionary * dict = self. listData [indexPath. row];
  
  
 
  
  
Post = [NSString stringWithFormat: @ "email =%@ & type =%@ & action =%@ & id =% @",
  
  
 
  
  
@ "<Your iosbook1.com user email>", @ "JSON", @ "remove", [dict objectForKey: @ "ID"];
  
  
 
  
  
}
  
  
 
  
  
NSData * postData = [post dataUsingEncoding: NSUTF8StringEncoding];
  
  
 
  
  
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL: url];
  
  
 
  
  
[Request setHTTPMethod: @ "POST"];
  
  
 
  
  
[Request setHTTPBody: postData];
  
  
 
  
  
NSURLConnection * connection = [NSURLConnection alloc]
  
  
 
  
  
InitWithRequest: request delegate: self];
  
  
 
  
  
If (connection ){
  
  
 
  
  
_ Datas = [NSMutableData new];
  
  
 
  
  
}
  
  
 
  
  
}
  
  
 
  
  
-(Void) connection :( NSURLConnection *) connection didFailWithError: (NSError *) error {
  
  
 
  
  
NSLog (@ "% @", [error localizedDescription]);
  
  
 
  
  
[MBProgressHUD hideHUDForView: self. view animated: YES];
  
  
 
  
  
}
  
  
 
  
  

  
  
 
  
  
-(Void) connectionDidFinishLoading: (NSURLConnection *) connection {
  
  
 
  
  
NSLog (@ "request completed ...");
  
  
 
  
  
NSDictionary * dict = [NSJSONSerialization JSONObjectWithData: _ datas
  
  
 
  
  
Options: NSJSONReadingAllowFragments error: nil];
  
  
 
  
  
If (action = ACTION_QUERY) {// query processing
  
  
 
  
  
[Self reloadView: dict];
  
  
 
  
  
} Else if (action = ACTION_REMOVE) {// Delete
  
  
 
  
  
NSString * message = @ "operation successful .";
  
  
 
  
  
NSNumber * resultCodeObj = [dict objectForKey: @ "ResultCode"];
  
  
 
  
  
If ([resultCodeObj integerValue] <0 ){
  
  
 
  
  
Message = [resultCodeObj errorMessage];
  
  
 
  
  
}
  
  
 
  
  
UIAlertView * alertView = [[UIAlertView alloc] initWithTitle: @ "prompt message"
  
  
 
  
  
Message: message
  
  
 
  
  
Delegate: nil
  
  
 
  
  
CancelButtonTitle: @ "OK"
  
  
 
  
  
OtherButtonTitles: nil];
  
  
 
  
  
[AlertView show];
  
  
 
  
  
// Re-Query
  
  
 
  
  
Action = ACTION_QUERY;
  
  
 
  
  
[Self startRequest];
  
  
 
  
  
}
  
  
 
  
  
[MBProgressHUD hideHUDForView: self. view animated: YES];
  
  
 
  
  
}
 
 

This article from the "Guan Dongsheng" blog, please be sure to keep this source http://2009315319.blog.51cto.com/701759/1174465