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---完成輸入后關閉鍵盤 在ViewController.h文件中聲明，放在屬性的下方 - （IBAction）textFiledDoneEditing:(id)sender;切換到ViewController.m，添加代碼- （IBAction）textFiledDoneEditing:(id)sender{[sender resignFirstResponder]; }----通過觸摸背景關閉鍵盤, 添加一個按鈕,讓他填充整個屏幕, 用戶觸到這個按鈕就觸發操作,將nameFiled和numberFiled設置成第一響應狀態 ViewController.h中添加— （IBAction）backgroundClick:（id）sender;在實現文件中添加:- (IBAction)backgroundClick:(id)sender{[nameFiled resignFirstResponder];[numberFiled resignFirstResponder]; }---實現滑塊和標簽,標簽顯示滑塊的值 在.h 文件中聲明一個輸出口和一個操作 IBOutlet UILabel *sliderLable;@property (nonatomic, retain) UILable *sliderLable- (IBAction)sliderChanged:(id)sender;切換到.m文件,添加屬性同步 實現sliderChanged:方法@synthesize sliderLable;- (IBAction)sliderChanged:(id)sender {UISlider *slider = (UISlider *)sender;int progressAsInt = (int)(slider.value + 0.5f);NSString *newText = [[NSString alloc] initWithFormat:@"%d", progressAsInt];sliderLable.text = newText;[newText release]; }----隱藏和顯示多個控件的最簡單的方法是, 使用UIView作為需要隱藏或顯示的項的公共父項.除了為兩個開關創建輸出口外,我們還需要為父視圖創建輸出口IBOutlet UISwitch *leftSwitch; IBOutlet UISwitch *rightswitch; IBOutlet UIView *switchView;@property (nonatomic, retain) UISwitch *leftSwitch; @property (nonatomic, retain) UISwitch *rightSwitch; @property (nonatomic, retain) UIView *switchView;-(IBAction)switchChanged:(id)sender; -(IBAction)toggleShowHide:(id)sender;在實現文件中添加如下代碼 @synthesize leftSwitch; @synthesize rightSwitch; @synthesize switchView;-(IBAction)switchChanged:(id)sender {UISwitch *whichSwich = (UISwitch)sender;BOOL setting = whichSwitch.isOn;[leftSwitch setOn:setting animated:YES];[rightSwitch setOn:setting animated:YES]; }-(IBAction)toggleShowHide:(id)sender {UISegmentedControl *segmentedControl = (UISegmentedControl *)sender;NSInteger segment = segmentedControl.selectedSegmentIndex;if(segment == 0) [switchView setHidden:ON];else [switchView seHidden:YES]; }

　　

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轉載于:https://www.cnblogs.com/ShlodenZhang/archive/2013/06/06/3120848.html

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