iOS summary _ios frequently used methods collection, call system phone, device differentiate, never lock screen in app

function of calling system call

Phone calls are only supported by the iphone, and the corresponding button for other devices should be disabled.

Call the system phone call function directly, can't go back to the application after hanging up the phone

[UIApplication sharedapplication] openurl:[nsurl urlwithstring:@ "tel://8004664411"];

Before calling the system phone call function to give a hint, hang up the phone can go back to the application

[UIApplication sharedapplication] openurl:[nsurl urlwithstring:@ "telprompt://8004664411"];

Similarly, can also call system map, SMS and other functions

OpenURL can help you execute maps,sms,browser,phone and even other applications. This is a piece of code that I often need to use in the development of my iphone , which is only one line.

Ways to differentiate device types

Infer whether it's an iphone or an ipad
With [Uidevice Currentdevice].model, this return is a nsstring, you can do for example the following inference to know whether the device is an ipad or an iPhone.

if ([Uidevice currentdevice].model rangeofstring:@ "IPad"].location! = Nsnotfound)

NSLog (@ "This was an ipad!");

With the Ui_user_interface_idiom () method, this is a system-defined macro. The usage is also very easy.

if (ui_user_interface_idiom () = = Uiuserinterfaceidiompad)

NSLog (@ "This was an ipad!");

Infer device type and model

-(nsstring*) dodeviceplatform{size_t size;    int NR = Sysctlbyname ("Hw.machine", NULL, &size, NULL, 0);    Char *machine = (char *) malloc (size);    NR = Sysctlbyname ("Hw.machine", Machine, &size, NULL, 0);    NSString *platform = [NSString stringwithcstring:machine encoding:nsutf8stringencoding];        Free (machine);            if ([Platform isequaltostring:@ "iphone1,1"]) {platform = @ "IPhone";            } else if ([Platform isequaltostring:@ "iphone1,2"]) {platform = @ "IPhone 3G";            } else if ([Platform isequaltostring:@ "iphone2,1"]) {platform = @ "IPhone 3GS"; } else if ([Platform isequaltostring:@ "iphone3,1"]| | [Platform isequaltostring:@ "iphone3,2"]| | [Platform isequaltostring:@ "iphone3,3"])            {platform = @ "IPhone 4";            } else if ([Platform isequaltostring:@ "iphone4,1"]) {platform = @ "IPhone 4S"; } else if ([Platform isequaltostring:@ "iphone5,1"]| | [Platform IsEqualtostring:@ "iphone5,2"]) {platform = @ "IPhone 5"; }else if ([Platform isequaltostring:@ "iphone5,3"]| | [Platform isequaltostring:@ "iphone5,4"])            {platform = @ "IPhone 5C"; }else if ([Platform isequaltostring:@ "iphone6,2"]| | [Platform isequaltostring:@ "iphone6,1"])            {platform = @ "IPhone 5S";            }else if ([Platform isequaltostring:@ "ipod4,1"]) {platform = @ "IPod touch 4";            }else if ([Platform isequaltostring:@ "ipod5,1"]) {platform = @ "IPod Touch 5";            }else if ([Platform isequaltostring:@ "ipod3,1"]) {platform = @ "IPod touch 3";            }else if ([Platform isequaltostring:@ "ipod2,1"]) {platform = @ "IPod touch 2";            }else if ([Platform isequaltostring:@ "ipod1,1"]) {platform = @ "IPod touch"; } else if ([Platform isequaltostring:@ "ipad3,2"]| | [Platform isequaltostring:@ "ipad3,1"]) {PLAtform = @ "IPad 3"; } else if ([Platform isequaltostring:@ "ipad2,2"]| | [Platform isequaltostring:@ "ipad2,1"]| | [Platform isequaltostring:@ "ipad2,3"]| | [Platform isequaltostring:@ "ipad2,4"])            {platform = @ "IPad 2";            }else if ([Platform isequaltostring:@ "ipad1,1"]) {platform = @ "IPad 1"; }else if ([Platform isequaltostring:@ "ipad2,5"]| | [Platform isequaltostring:@ "ipad2,6"]| | [Platform isequaltostring:@ "ipad2,7"])            {platform = @ "ipad Mini"; } else if ([Platform isequaltostring:@ "ipad3,3"]| | [Platform isequaltostring:@ "ipad3,4"]| | [Platform isequaltostring:@ "ipad3,5"]| | [Platform isequaltostring:@ "ipad3,6"])            {platform = @ "ipad 3"; } return platform;}

Never lock the screen while the device is executing the program

[[uiapplicationsharedapplication]setidletimerdisabled : YES ];

Maybe update ...

iOS summarizes _ios frequently used methods collection, call system phone, device differentiation, never lock screen in app