iOS app making phone calls

Method One: features: Direct dialing, do not eject the hint.　　And, after the call, stay in the address Book, do not return to the original app.

Call  -(void) Callphone: (NSString *) phonenumber  {      //phonenumber = "18369 ..."      Nsmutablestring * str=[[nsmutablestring alloc] initwithformat:@ "tel:%@", PhoneNumber];      [[UIApplication sharedapplication] Openurl:[nsurl urlwithstring:str];  }  

　　

Method Two: features: Call before the popup prompt. And will return to the original application after the call is finished.

Call  -(void) Callphone: (NSString *) phonenumber  {      //phonenumber = "18369 ..."      Nsmutablestring * str=[[nsmutablestring alloc] initwithformat:@ "tel:%@", PhoneNumber];      UIWebView * Callwebview = [[UIWebView alloc] init];      [Callwebview loadrequest:[nsurlrequest Requestwithurl:[nsurl Urlwithstring:str]];      [Self.view Addsubview:callwebview];  

　　

iOS app making phone calls