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[英]IOS 5 - Call a ViewController from another ViewController
[英]How to call UIView method from another ViewController in iOS
我已經從實現了寫意素描教程
http://mobile.tutsplus.com/tutorials/iphone/ios-sdk_freehand-drawing/.
我需要稱之為- (void)drawBitmap;
- (void)drawBitmapGreen;
我的View控制器中用於更改按鈕操作顏色的方法。 我做了下面的事情。
#import <UIKit/UIKit.h>
#import "checklistController.h"
@interface SmoothedBIView : UIView
@property(nonatomic,assign) checklistController *trnsferColor;
- (void)drawBitmapGreen;
@end
@implementation SmoothedBIView
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
[self drawBitmapred];
[self drawBitmapGreen];
[self setNeedsDisplay];
[path removeAllPoints];
ctr = 0;
}
- (void)drawBitmapGreen
{
UIGraphicsBeginImageContextWithOptions(self.bounds.size, NO, 0.0);
if (!incrementalImage) // first time; paint background white
{
UIBezierPath *rectpath = [UIBezierPath bezierPathWithRect:self.bounds];
[[UIColor clearColor] setFill];
[rectpath fill];
}
[incrementalImage drawAtPoint:CGPointZero];
[[UIColor greenColor] setStroke];
[path stroke];
incrementalImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//SmoothedBIView.trnsferColor = self;
}
...
@interface checklistController : UIViewController
@property(nonatomic,strong) IBOutlet UIView *vPaintPreview; //SmoothedBIview outlet for hidden and unhidden property.
@property(nonatomic,assign) SmoothedBIview *SBIView;
-(IBAction)editvImage;
-(IBAction)RedSketch;
-(IBAction)GreenSketch;
更新的代碼
@implementation file
-(IBAction)GreenSketch
{
SmoothedBIView *SBIview = [[SmoothedBIView alloc] init];
[SBIview drawBitmapGreen];
}
我在這里做錯了什么?
您是否嘗試過以下方法:
-(IBAction)GreenSketch
{
SmoothedBIView *SBview = [[SmoothedBIView alloc] init];
[SBview drawBitmapGreen];
[SBview setNeedsDisplay];
}
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