example Tweak.xm file for iGoat

Tweak.xm

#import <PersonalPhotoStorageVC.h>

%hook PersonalPhotoStorageVC

// Hooking an instance method with no arguments.
- (void)viewDidLoad {
	%orig;
	self.theTextField.text = [self valueForKey:@"_pw"];
	self.theTextField.textColor = [UIColor redColor];
}

// Always make sure you clean up after yourself; Not doing so could have grave consequences!
%end