如何从一个点移动uiview ios

问题描述：

我正在创建一个应用程序，我只想从一侧移动uview，我必须更改一点（-y点）。如何从一个点移动uiview ios

目前来看显示为

： enter image description here

但我想这一点：

enter image description here

我已经试过这样：

UIView *viewRed=(UIView*)[self.view viewWithTag:11]; 
    float angle = M_PI/10; //rotate 180°, or 1 π radians 
    viewRed.layer.transform = CATransform3DMakeRotation(angle, 0, 0.0, 1.0);

我已经移除素标记从旋转视图并将它们放在主视图上。 – Optimistic

@MidhunMP：检查更新的问题。请帮助我。 – Optimistic

您可以使用CAShapeLayer和CATextLayer来做同样的事情，也请检查CoreText和NSAttributedString。 –

答

使用具有所需形状的图像或者在实验室后面画一层具有所需形状埃尔斯

编辑：

UIBezierPath *aPath = [UIBezierPath bezierPath]; 
    // Set the starting point of the shape. 
[aPath moveToPoint:CGPointMake(0.0, 300)]; 

// Draw the lines. 
[aPath addLineToPoint:CGPointMake(self.view.frame.size.width, 300.0)]; 

[aPath addLineToPoint:CGPointMake(self.view.frame.size.width, 200.0)]; 

[aPath addLineToPoint:CGPointMake(0.0, 120.0)]; 


CAShapeLayer *shapeLayer = [CAShapeLayer layer]; 
shapeLayer.path = aPath.CGPath; 
shapeLayer.fillColor = [[[UIColor redColor] colorWithAlphaComponent:0.5] CGColor]; 
[self.view.layer addSublayer:shapeLayer];

我该如何绘制图层？我在故事板中使用了uiview。 – Optimistic

thnks但它不支持，如果我改变oriantation。 :( – Optimistic

它并没有设置到视图的底部？我必须更改它以将其设置到self.view的底部？ – Optimistic

答

使用CAShapeLayer为实现这一

 CGMutablePathRef path = CGPathCreateMutable(); 
    CGPathMoveToPoint(path,NULL,0.0,200.0); 
    CGPathAddLineToPoint(path, NULL, 320.0f, 250.0f); 
    CGPathAddLineToPoint(path, NULL, 320.0f, 367.0f); 
    CGPathAddLineToPoint(path, NULL, 0.0f, 367.0f); 
    CGPathAddLineToPoint(path, NULL, 0.0f, 200.0f); 


    CAShapeLayer *shapeLayer = [CAShapeLayer layer]; 
    [shapeLayer setPath:path]; 
    [shapeLayer setFillColor:[[UIColor redColor] CGColor]]; 
    [shapeLayer setStrokeColor:[[UIColor blackColor] CGColor]]; 
    [shapeLayer setBounds:CGRectMake(0.0f, 0.0f, 160.0f, 480)]; 
    [shapeLayer setAnchorPoint:CGPointMake(0.0f, 0.0f)]; 
    [shapeLayer setPosition:CGPointMake(0.0f, 0.0f)]; 
    [[[self view] layer] addSublayer:shapeLayer]; 

    CGPathRelease(path);

Thnk u Frndu。:) – Optimistic

答

创建UIViwe类绘制形状，并添加基本视图

@interface ShapeView : UIView 

@end 

@implementation fractalTriangel 

- (id)initWithFrame:(CGRect)frame 
{ 
    self = [super initWithFrame:frame]; 
    if (self) { 
} 
    return self; 
} 

- (void)drawRect:(CGRect)rect 
{ 
CGContextRef ctx = UIGraphicsGetCurrentContext(); 

    CGContextBeginPath(ctx); 
    CGContextMoveToPoint (ctx, point1.x,point1.y); 
    CGContextAddLineToPoint(ctx, point2.x,point2.y); 
    CGContextAddLineToPoint(ctx, point3.x,point3.y); 
    CGContextAddLineToPoint(ctx, point4.x,point4.y); 
    CGContextClosePath(ctx); 

    CGContextSetRGBFillColor(ctx, 1,1, 1, 1);//set color 

    CGContextFillPath(ctx); 
} 


@end

如何从一个点移动uiview ios

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