How to take a screenshot programmatically on iOS

Question

I want a screenshot of the image on the screen saved into the saved photo library.

Answer 1

Another option is to use the Automation tool on instruments. You write a script to put the screen into whatever you state you want, then take the shots. Here is the script I used for one of my apps. Obviously, the details of the script will be different for your app.

var target = UIATarget.localTarget();
var app = target.frontMostApp();
var window = app.mainWindow();
var picker = window.pickers()[0];
var wheel = picker.wheels()[2];
var buttons = window.buttons();
var button1 = buttons.firstWithPredicate("name == 'dateButton1'");
var button2 = buttons.firstWithPredicate("name == 'dateButton2'");

function setYear(picker, year) {
    var yearName = year.toString();
    var yearWheel = picker.wheels()[2];
    yearWheel.selectValue(yearName);
}

function setMonth(picker, monthName) {
    var wheel = picker.wheels()[0];
    wheel.selectValue(monthName);
}

function setDay(picker, day) {
    var wheel = picker.wheels()[1];
    var name = day.toString();
    wheel.selectValue(name);
}

target.delay(1);
setYear(picker, 2015);
setMonth(picker, "July");
setDay(picker, 4);
button1.tap();
setYear(picker, 2015);
setMonth(picker, "December");
setDay(picker, 25);

target.captureScreenWithName("daysShot1");

var nButtons = buttons.length;
UIALogger.logMessage(nButtons + " buttons");
for (var i=0; i