UIDatePicker
- setDatePickerMode:設置日期控件的顯示模式
- setLocale:設置是以什麼國家的形式來顯示,中國:zh_Hans_CN
NSDateFormatter內容,格式轉換器
訪問照相機,遵守協議:UINavigationControllerDelegate,UIImagePickerControllerDelegate
UIImagePickerController* imagePicker = [[UIImagePickerController alloc] init] 實例化圖像選擇控制器
[imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary] 訪問本地照片庫
- setAllowsEditing:(BOOL)
設置代理 setDelegate
記住通過presentViewController展現圖片控制器
- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*) info
在調用此方法之前,先輸出一下info,看裏面的鍵值
最後要dismissViewController
pickerView
視圖控制器要遵守DataSource和Delegate協議
列數和行數的設定,
- didSelectRow用來選定後返回數值的
- pickerView:(UIPickerView*) rowHeightForComponent:(NSInteger)component
間接設置Indicator的高度
setShowsSelectionIndicator:(BOOL) indicator是否可見
pickerView每一行可以返回UIView的,不侷限於文字。