这是我在公司做项目时,顺便做的一些笔记.......
//1.iphone开发--改变UIPageControl里的小点的颜色
pageControl.currentPageIndicatorTintColor = [UIColor blackColor];
pageControl.pageIndicatorTintColor = [UIColor grayColor];
//2.ios如何让状态栏变成白色的
[[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleLightContent];
如果不行，请在info.plist里面添加 View controller-based status bar appearance
NO
可以参考http://beyondvincent.com/blog/2013/11/03/120-customize-navigation-status-bar-ios-7/
//3.如:修改导航栏默认标题"忆云美印"的颜色和字体
self.title=@"忆云美印";
self.navigationController.navigationBar.titleTextAttributes=@{UITextAttributeTextColor:[UIColor whiteColor],UITextAttributeFont:[UIFont boldSystemFontOfSize:20]};
//4.给label设置圆角
label.layer.borderWidth=1.0f;
label.layer.cornerRadius=5.0f;
//5.手动旋转状态栏必须实现下面的方法
- (BOOL)shouldAutorotate
{
return
NO;
}
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskPortrait;
}
//6.如何设置只能竖屏显示
修改info.plist里面supportedInterfaceOrientations设置item为portrait就可以了,这个设置为全局.
//7.利用UIColor展现#f6f6f6这个传统颜色转换为十进制f6为240
则UIColor *color=[UIColor colorWithRed:240/255.0 green:240/255.0 blue:240/255.0
alpha:1];
//8.创建类目,延展,协议,空文件
cmd+n 选择ios Source里面的objective-c File -> File Type的类型(类目,延展,协议,空文件)
//9.把视图转换为图片
//把视图转换为图片
UIGraphicsBeginImageContext(oppositeImageView.bounds.size);
[oppositeImageView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *oppositeImg=UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//10.实现图片视图的拖动效果
- (void)viewDidLoad {
[super viewDidLoad];
//创建图片视图
imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100,
100, 100,
150)];
imageView.userInteractionEnabled=YES;
imageView.image=[UIImage imageNamed:@"ad_1"];
//平移手势
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAction:)];
[imageView addGestureRecognizer:pan];
[self.view addSubview:imageView];
}
//平移手势的拖动事件
- (void)panAction:(UIPanGestureRecognizer *)pan
{
CGPoint point=[pan translationInView:self.view];
pan.view.center=CGPointMake(pan.view.center.x+point.x, pan.view.center.y+point.y);
[pan setTranslation:CGPointZero inView:self.view];
}
//11.图片可以响应事件,如 UITextView添加到图片可以进行拖动.
backgrondImage.userInteractionEnabled=YES;