在Ubuntu上iPhone開發教程

想開發iPhone應用，沒有Mac Book也沒有Mac Mini，怎麼辦？

想嘗試在Linux上開發iPhone嗎，那就請接著往下看。

1. 前提條件：

在Ubuntu上編譯好toolchain，參見http://www.linuxidc.com/Linux/2010-04/25542.htm。

因為不能跑模擬器，需要一部iPhone手機來測試程序，iPhone3或iPhone4都可以

（目前支持到iPhone 3.1SDK，程序可以在iPhone4上運行）

2. 從UIApplication派生你的應用程序類：

頭文件MyScylla.h

1. #import <CoreFoundation/CoreFoundation.h>
2. #import <UIKit/UIKit.h>
3. @class MyMainView;
4. @interface MyScylla : UIApplication
5. {
6. UIWindow *window;
7. MyMainView *mainView;
8. }
9. @property (nonatomic, retain) IBOutlet UIWindow *window;
10. @property (nonatomic, retain) IBOutlet MyMainView *mainView;
11. - (void)applicationDidFinishLaunching:(UIApplication *)application;
12. - (void)dealloc;
13. - (void) redirectConsoleLogToDocumentFolder;
14. @end

m文件MyScylla.m

1. #import <Foundation/Foundation.h>
2. #import <UIKit/UIKit.h>
3. #import <UIKit/UIAlert.h>
4. #import "MyMainView.h"
5. #import "MyScylla.h"
6. int main(int argc, char* argv[])
7. {
9. NSAutoreleasePool *autoreleasePool = [
10. [ NSAutoreleasePool alloc ] init
11. ];
12. int returnCode = UIApplicationMain(argc, argv, @"MyScylla", @"MyScylla");
13. [ autoreleasePool release ];
14. return returnCode;
15. }
17. @implementation MyScylla
18. @synthesize window;
19. @synthesize mainView;
20. - (void)applicationDidFinishLaunching:(UIApplication *)application {
21. NSLog(@"applicationDidFinishLaunching");
22. [self redirectConsoleLogToDocumentFolder];
24. // 可以用bounds方法會得到整個屏幕區域,包括狀態欄
25. CGRect screenBounds = [ [ UIScreen mainScreen ] bounds ];
27. // 然後用initWithFrame創建UIWindow對象
28. window = [ [ UIWindow alloc ] initWithFrame: screenBounds ];
29. // 用applicationFrame方法返回可顯示區域,不包括狀態欄
30. CGRect rect = [ [ UIScreen mainScreen ] applicationFrame ];
31. rect.origin.x = rect.origin.y = 0.0f;
32. mainView = [[MyMainView alloc]init];
33. [window addSubview: mainView];
34. [window makeKeyAndVisible];
35. }
36. - (void)dealloc {
37. [window release];
38. [mainView release];
39. [super dealloc];
40. }
41. - (void) redirectConsoleLogToDocumentFolder {
43. NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUSErDomainMask, YES);
44. NSString *documentsDirectory = [paths objectAtIndex:0];
45. NSString *logPath = [documentsDirectory stringByAppendingPathComponent:@"myscylla_log.txt"];
46. freopen([logPath cStringUsingEncoding:NSASCIIStringEncoding],"a+",stderr);
47. }
48. @end