应用程序终止时发送HTTP POST

Question

我正在编写应用程序聊天，我想在用户从后台终止应用程序时注销。为此，我发送请求帖子从数据库中删除用户。但是，当我在applicationWillTerminate:(UIApplication *)application

中使用HTTP POST时，HTTP POST不会发送

这是我尝试的整个代码：

NSString *User_To_Be_Deleted = [[NSUserDefaults standardUserDefaults] objectForKey:@"isLogin"];
NSMutableURLRequest *DeleteRequest  = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://192.168.1.8/Chatiw/Logout_Delete.php"] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:30];



NSString *data_to_be_sent    = [NSString stringWithFormat:@"nickname=walidoss"];
[DeleteRequest setHTTPMethod:@"POST"];
[DeleteRequest setHTTPBody:[data_to_be_sent dataUsingEncoding:NSUTF8StringEncoding]];



NSURLConnection *myconnection  = [[NSURLConnection alloc] initWithRequest:DeleteRequest delegate:self];

[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"isLogin"];

当应用终止任何建议或帮助时，NSURLCONNECTION无效。

Answer 1

替换：

NSURLConnection *myconnection  = [[NSURLConnection alloc] initWithRequest:DeleteRequest delegate:self]; 

为此：

NSURLConnection *myconnection  = [[NSURLConnection alloc] initWithRequest:DeleteRequest delegate:self startImmediately:YES];

修改

试试这段代码：

[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    if(!error){
         //your code here on success
    } 
}] resume];

Answer 2

我有同样的问题并找出解决方案。请执行以下操作。

NSURLResponse* response = nil;
NSData *data = [data_to_be_sent dataUsingEncoding:NSUTF8StringEncoding];
[NSURLConnection sendSynchronousRequest:DeleteRequest returningResponse:&response error:nil];

希望它适合你。