常用代码小记

最新推荐文章于 2025-03-27 23:31:34 发布

转载最新推荐文章于 2025-03-27 23:31:34 发布 · 76 阅读

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原文链接：http://www.cnblogs.com/smallyin00/archive/2012/10/10/2718399.html

1.UILabel 换行

1     versionLabel.lineBreakMode = UILineBreakModeWordWrap;
3     versionLabel.numberOfLines = 0;

2.UILabel 阴影

1 　　tipLabel.shadowColor = [UIColorwhiteColor];
2　　 tipLabel.shadowOffset = CGSizeMake(1.0, 1.0);

3.自定义 View　实现drawRect方法

@interface CustomView :UIView
@end
@implementation CustomView
- (void)drawRect:(CGRect)rect
{
    //画长方形
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    CGContextSetStrokeColorWithColor(ctx, [RGBCOLOR(213, 213, 213) CGColor]);
    CGContextSetLineWidth(ctx, 1.0);
    CGPoint poins[] = {CGPointMake(0, 0),CGPointMake(280, 0),CGPointMake(280, 40),CGPointMake(0, 40)};
    CGContextAddLines(ctx,poins,4);
    CGContextClosePath(ctx);
    CGContextStrokePath(ctx);
    //画线
    CGContextMoveToPoint(ctx, 195, 0);
    CGContextAddLineToPoint(ctx, 195, 40);
    CGContextSetLineWidth(ctx, 1.0);
    CGContextStrokePath(ctx);
}
@end

4.复制到剪贴板

1  UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
2  pasteboard.string = qqLabel.text;

5.键盘事件

1  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
2     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];

　实现方法：

#pragma mark - key board notice
-(void)keyboardWillShow:(NSNotification*)note
{
    [UIView animateWithDuration:0.3 animations:^(void)
     {
         CGRect r = CGRectZero;
         [[note.userInfo objectForKey:@"UIKeyboardFrameEndUserInfoKey"] getValue:&r];
         CGRect rect = contentView.frame;
         rect.size.height = 460-70-r.size.height;
         contentView.frame = rect;

        }];
    
}

-(void)keyboardWillHide:(NSNotification*)note
{
    [UIView animateWithDuration:0.3 animations:^(void)
     {
         CGRect rect = contentView.frame;
         rect.size.height = 174;
         contentView.frame = rect;       
     }];
    
}

转载于:https://www.cnblogs.com/smallyin00/archive/2012/10/10/2718399.html