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- (BOOL) textFieldShouldReturn:(id)textField{ [textField resignFirstResponder]; } |
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CGRect frame = CGRectMake (origin.x, origin.y, size.width, size.height)；矩形 NSStringFromCGRect(someCG) 把CGRect结构转变为格式化字符串； CGRectFromString(aString) 由字符串恢复出矩形； CGRectInset(aRect) 创建较小或较大的矩形（中心点相同），＋较小 －较大 CGRectIntersectsRect(rect1, rect2) 判断两矩形是否交叉，是否重叠 CGRectZero 高度和宽度为零的／位于（0，0）的矩形常量 |
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CGPoint aPoint = CGPointMake(x, y); CGSize aSize = CGSizeMake(width, height); |
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[myView setAlpha:value]; (0.0 < value < 1.0) |
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[myView setBackgroundColor:[UIColor redColor]]; (blackColor;darkGrayColor;lightGrayColor;whiteColor;grayColor; redColor; greenColor; blueColor; cyanColor;yellowColor;magentaColor; orangeColor;purpleColor;brownColor; clearColor; ) |
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UIColor *newColor = [[UIColor alloc] initWithRed:(float) green:(float) blue:(float) alpha:(float)]; 0.0~1.0 |
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768X1024 1024X768 状态栏高 20 像素高 导航栏 工具栏 44像素高 |
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[[UIApplication shareApplication] setStatusBarHidden: YES animated:NO] |
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[[UIApplication shareApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight]. orientation == UIInterfaceOrientationLandscapeLeft window=[[UIWindow alloc] initWithFrame:[UIScreen mainScreen] bounds];全屏 |
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aView.autoresizingSubviews = YES; aView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight); |
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UIButton *scaleUpButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [scaleUpButton setTitle:@"放 大" forState:UIControlStateNormal]; scaleUpButton.frame = CGRectMake(40, 420, 100, 40); [scaleUpButton addTarget:self action:@selector(scaleUp) forControlEvents:UIControlEventTouchUpInside]; |
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UIImageView *aView; [aView setImage:[UIImage imageNamed:@”name.png”]]; view1.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"image1.png"]]; UISlider *slider = (UISlider *) sender; NSString *newText = [[NSString alloc] initWithFormat:@”%d”, (int)(slider.value + 0.5f)]; label.text = newText; |
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- (IBActive) someButtonPressed:(id) sender { UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@”Are you sure?” delegate:self cancelButtonTitle:@”No way!” destructiveButtonTitle:@”Yes, I’m Sure!” otherButtonTitles:nil]; [actionSheet showInView:self.view]; [actionSheet release]; } |
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- (void) actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger) buttonIndex { if(buttonIndex != [actionSheet cancelButtonIndex]) { NSString *message = [[NSString alloc] initWithFormat:@”You can breathe easy, everything went OK.”]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@”Something was done” message:message delegate:self cancelButtonTitle:@”OK” otherButtonTitles:nil]; [alert show]; [alert release]; [message release]; } } |
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原文地址：http://www.cnblogs.com/haolianxue/p/4306837.html
