Learn iPhone uikit 4

Learn iPhone uikit 4

1. customizes the date selector and provides a 5-minute countdown;

2. Use of the Selection box;

3. append the uiview to the selection box;

4. Adjust the size of the row and column in the selection box;

5. Activity indicator;

6. Activity indicator. The effect is to start before the screen jump and close after the jump. Therefore, the activity indicator is placed in the viewwilldisappear and viewwillappear methods. Place the disable function in the methods of viewdiddisappear and viewdidappear;

7. display the progress bar to imitate the download process after clicking "Download;

8. Search items, common search;

9. display the search results in real time. The key is to clear and store the arrays saved in the search results. removeallobjects is used;

10. Use of uisearchdisplaycontroller;

11. Use of uisearchdisplaycontroller, which can be searched in real time. There are two Arrays: one is to save the searched results and the other is to store all arrays. usage (nsnotfound! = [Item rangeofstring: searchstring]. Location;

12. Use of Page Control

13. usage of the rolling View;

14. Zoom in and out of the rolling view;

15. Page unit scrolling

16. comprehensive use of uiscrollview and uipagecontrol instances;

17. Use nsstring to draw strings

18. Use of range entries;