iphone - Best way to pass variables between views -

iphone - Best way to pass variables between views -

i new xcode & objective-c (having come php) have started play around , finding hard pass variables between views have far:

game_info.h

#import <uikit/uikit.h> @interface game_info : uiviewcontroller { iboutlet uitextfield *groupname; iboutlet uisegmentedcontrol *gametype; } @property (nonatomic,retain) iboutlet uitextfield *groupname; - (ibaction) gametypepicker; - (ibaction) keyboardhide; - (ibaction) backbtn; - (ibaction) nextbtn; @end

game_info.m

#import "i_dare_youviewcontroller.h" #import "game_info.h" #import "game_tdor.h" @implementation game_info @synthesize groupname; // next button -(ibaction) nextbtn{ if ([groupname.text length] == 0) { // alert uialertview *alert = [[uialertview alloc] initwithtitle:@"group name" message:@"please come in grouping name" delegate:self cancelbuttontitle:@"ok" otherbuttontitles:nil ]; [alert show]; [alert release]; }else if([groupname.text length] < 3){ // alert uialertview *alert = [[uialertview alloc] initwithtitle:@"group name" message:@"please come in name longer 3 characters" delegate:self cancelbuttontitle:@"ok" otherbuttontitles:nil ]; [alert show]; [alert release]; }else{ game_tdor *screen = [[game_tdor alloc] initwithnibname:nil bundle:nil]; screen.modaltransitionstyle = uimodaltransitionstylecrossdissolve; [self presentmodalviewcontroller:screen animated:yes]; [screen release]; game_tdor *screen1 = [[game_tdor alloc] initwithnibname:nil bundle:nil]; nslog(@"game_info: %@",self.groupname.text); screen1.groupnametext = self.groupname.text; [self presentmodalviewcontroller:screen1 animated:yes]; [screen1 release]; } }

then in view / .h / .m file trying 'groupname' property.

game_tdor.m

#import "i_dare_youviewcontroller.h" #import "game_info.h" #import "game_tdor.h" @implementation game_tdor @synthesize groupnametext,testlbl; - (void)viewdidload { nslog(@"game_tdor: %@",self.groupnametext); nsstring *msg = [[nsstring alloc] initwithformat:@"hello, %@",[self.groupnametext capitalizedstring]]; [testlbl settext:msg]; [msg release]; [super viewdidload]; // additional setup after loading view nib. }

so trying on first view page (game_info) there input text box , im trying pass label on view page (game_tdor)

this comes out in nslog (note sec page (game_tdor) comes out first in log.

2011-07-17 00:25:34.765 dare you[3941:207] game_tdor: (null) 2011-07-17 00:25:34.774 dare you[3941:207] game_info: name

problem solved:

on next button needed add together variable before moved page (not other way around - silly noobish thing do...)

game_tdor *screen1 = [[game_tdor alloc] initwithnibname:nil bundle:nil]; nslog(@"game_info: %@",self.groupname.text); screen1.groupnametext = self.groupname.text; [self presentmodalviewcontroller:screen1 animated:yes]; [screen1 release]; game_tdor *screen = [[game_tdor alloc] initwithnibname:nil bundle:nil]; screen.modaltransitionstyle = uimodaltransitionstylecrossdissolve; [self presentmodalviewcontroller:screen animated:yes]; [screen release];

if need pass value of groupname.text game_info view controller game_tdor view controller, presented modally former, can declare property in game_tdor hold value:

1) declare nsstring property in game_tdor @interface block:

@property (nonatomic,copy) nsstring *groupnametext;

(remember synthesize or implement accessor methods in implementation block)

2) in nextbtn action, after initialize game_tdor instance, set property:

game_tdor *screen = [[game_tdor alloc] init...]; screen.groupnametext = self.groupname.text;

iphone objective-c xcode