標籤:
// 將像素point由point所在視圖轉換到目標視圖view中,返回在目標視圖view中的像素值- (CGPoint)convertPoint:(CGPoint)point toView:(UIView *)view;// 將像素point從view中轉換到當前視圖中,返回在當前視圖中的像素值- (CGPoint)convertPoint:(CGPoint)point fromView:(UIView *)view;// 將rect由rect所在視圖轉換到目標視圖view中,返回在目標視圖view中的rect- (CGRect)convertRect:(CGRect)rect toView:(UIView *)view;// 將rect從view中轉換到當前視圖中,返回在當前視圖中的rect- (CGRect)convertRect:(CGRect)rect fromView:(UIView *)view;
// controllerA 中有一個UITableView, UITableView裡有多行UITableVieCell,cell上放有一個button// 在controllerA中實現:CGRect rc = [cell convertRect:cell.btn.frame toView:self.view];或CGRect rc = [self.view convertRect:cell.btn.frame fromView:cell];// 此rc為btn在controllerA中的rect或當已知btn時:CGRect rc = [btn.superview convertRect:btn.frame toView:self.view];或CGRect rc = [self.view convertRect:btn.frame fromView:btn.superview];
轉摘自:http://blog.csdn.net/xuhuan_wh/article/details/8486337
心得:仔細理會有其道理,哪個view上的尺寸,要到哪個view上去挖相同的尺寸(總之相對於螢幕位置不變)。總之就是一個View轉換到另一個View,就是直接將要轉換的Frame往外面凸起或者凹進去,到目標View上對應的尺寸
eg:
UIScrollView *ss= [[UIScrollView alloc]initWithFrame:self.view.bounds]; ss.backgroundColor=[UIColor whiteColor]; ss.contentSize=CGSizeMake(ss.frame.size.width, ss.frame.size.height*2); //原始View UIView *vv=[[UIView alloc]initWithFrame:CGRectMake(100, 580, 100, 40)]; vv.backgroundColor=[UIColor redColor]; [ss addSubview:vv]; [self.view addSubview:ss]; //目標View UIView *backgroundView=[[UIView alloc]initWithFrame:CGRectMake(0, 100, 320, 100)]; backgroundView.backgroundColor=[UIColor brownColor]; [self.view addSubview:backgroundView]; //原始View的尺寸要映射到目標View上返回其尺寸 CGRect rect=[vv convertRect:vv.bounds toView:backgroundView]; NSLog(@"%@",NSStringFromCGRect(rect)); CGRect rect1=[backgroundView convertRect:vv.bounds fromView:vv]; NSLog(@"%@",NSStringFromCGRect(rect1));
輸出結果:2015-02-05 10:02:10.301 testConvertRect[1262:27344] {{100, 480}, {100, 40}} 2015-02-05 10:02:10.302 testConvertRect[1262:27344] {{100, 480}, {100, 40}}
iOS開發筆記--UIView中的座標轉換(convertRect)