Here's the code for the iPhone word processor

Makefile code:

 CC=arm-apple-darwin-cc 
LD=$(CC) LDFLAGS=-lobjc -framework CoreFoundation -framework Foundation -framework UIKit -framework LayerKit -framework CoreGraphics 

all: SampleApp SampleApp: mainapp.o SampleApp.o 
      $(LD) $(LDFLAGS) -v -o $@ $^ 

%.o: %.m 

      $(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@ 

clean: 

      rm -f *.o SampleApp

====
mainapp.m code:

 #import <UIKit/UIKit.h>
#import "SampleApp.h" 

int main(int argc, char **argv) 
{ 
     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 
     return UIApplicationMain(argc, argv, [SampleApp class]); 
}

====
SampleApp.h code:


#import <CoreFoundation/CoreFoundation.h>
#import <Foundation/Foundation.h>
#import <UIKit/CDStructures.h>
#import <UIKit/UIWindow.h>
#import <UIKit/UIView-Hierarchy.h>
#import <UIKit/UIHardware.h>
#import <UIKit/UIKit.h>
#import <UIKit/UIApplication.h>
#import <UIKit/UITextView.h>
#import <UIKit/UIView.h>
#import <UIKit/UIKeyboard.h>

@interface SampleApp : UIApplication {
        UIView      *mainView;
        UITextView  *textView;
        UIKeyboard  *kb;
        NSString    *path;
        NSError     *error;
}

@end

====
SampleApp.m code:


#import "SampleApp.h"

@implementation SampleApp

- (void) applicationDidFinishLaunching: (id) unused
{
    UIWindow *window;
    struct CGRect rect = [UIHardware fullScreenApplicationContentRect];
    rect.origin.x = rect.origin.y = 0.0f;

    window = [[UIWindow alloc] initWithContentRect: rect];

    [window orderFront: self];
    [window makeKey: self];
    [window _setHidden: NO];

    mainView = [[UIView alloc] initWithFrame: rect];

    textView = [[UITextView alloc] 
        initWithFrame: CGRectMake(0.0f, 0.0f, 320.0f, 240.0f)];
    [textView setEditable:YES];
    [textView setTextSize:14];

    kb = [[UIKeyboard alloc] 
        initWithFrame:CGRectMake(0.0f, 245.0f, 320.0f, 200.0f)];

    [window setContentView: mainView];
    [mainView addSubview:textView];
    [mainView addSubview:kb];

    path = @"/var/root/.s1text";

    [textView setText:
        [NSMutableString 
            stringWithContentsOfFile:path
            encoding:NSMacOSRomanStringEncoding
            error:&error]];
}

- (void) applicationWillSuspend
{
   [[textView text]
        writeToFile: path 
        atomically: NO 
        encoding: NSMacOSRomanStringEncoding
        error: &error];
}

@end