iOS Development-Call Summary

As for the iOS app, there are 3 ways that I know about making calls:

One. Using OpenURL (tel)

Features: direct dial, not pop-up 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];}

Two. Using Requestwithurl (recommended)

Features: Pop-up prompt before dialing. And, you will return to the original application when you finish dialing.

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];}

Three. Using OpenURL (telprompt)

Features: Pop-up prompt before dialing. And, you will return to the original application when you finish dialing.

Note: There has been no telprompt in Apple's official documentation, which was previously used and rejected when uploading the audit.

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