将UITextView转换为图像

Question

我有一个UITextView和一个UIImageView，我想要将其转换为单个图像进行共享。

SaveImageView，是ImageView，我想要保存textview的图像。

Textview可以在屏幕上移动它，所以我决定保存它们的最终位置并将其提供给SaveImageView。

首先在图像中转换UItextView并保存其位置。

然后，我想将两个imageview加入一个图像。

self.SaveTextView.frame = self.textView.frame; 


UIGraphicsBeginImageContext (self.textView.bounds.size); 

[self.textView.layer renderInContext:UIGraphicsGetCurrentContext()]; 

UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext(); 

UIGraphicsEndImageContext(); 


self.SaveTextView.image=resultingImage; 

//连接两个UIImageView的

UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, 0.0); 

[self.BaseImageView.image drawInRect:CGRectMake(0, 0, self.BaseImageView.frame.size.width, self.BaseImageView.frame.size.height)]; 

[self.SaveTextView.image drawInRect:CGRectMake(self.SaveTextView.frame.origin.x, self.SaveTextView.frame.origin.y, self.SaveTextView.frame.size.width, self.SaveTextView.frame.size.height)]; 


_SaveImage = UIGraphicsGetImageFromCurrentImageContext(); 

UIGraphicsEndImageContext(); 

的问题是，在那里我TextView的写的地方是不是在保存的图像的相同位置，与文本的图像稍微移动，当它应该是我写的确切位置时，找不到错误在哪里。

任何帮助？

Answer 1

尝试实现此方法，并调用它在上海华：

@implementation UIView (ScreenShot) 

- (UIImage *)screenShot 
{ 
    UIGraphicsBeginImageContextWithOptions(self.bounds.size, self.opaque, 0.0); 
    [self.layer renderInContext:UIGraphicsGetCurrentContext()]; 
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    return image; 
} 

@end 

Answer 2

尝试......

//Make Label 
UILabel *_labelTimeOutName = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 428, 32)]; 
_labelTimeOutName.text = @"Your label text here"; 
_labelTimeOutName.minimumScaleFactor = 0.5; 
_labelTimeOutName.numberOfLines = 1; 
_labelTimeOutName.textColor = [UIColor whiteColor]; 
_labelTimeOutName.backgroundColor = [UIColor clearColor]; 
_labelTimeOutName.font = [UIFont fontWithName:@"TrebuchetMS-Bold" size:24]; 
_labelTimeOutName.textAlignment = NSTextAlignmentCenter; 

//add label inside a temp View 
UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 428, 32)]; 
tempView.backgroundColor = [UIColor clearColor]; 
[tempView addSubview:_labelTimeOutName]; 

//render image 
//CGContextRef context = UIGraphicsGetCurrentContext(); 
UIGraphicsBeginImageContextWithOptions(tempView.bounds.size, tempView.opaque, 0.0); 
// The view to be rendered 
[[tempView layer] renderInContext:UIGraphicsGetCurrentContext() ]; //context]; 
// Get the rendered image 
////////////////////////////////////////////////////////////////////// 
UIImage *FinalTextIamge = UIGraphicsGetImageFromCurrentImageContext(); 
////////////////////////////////////////////////////////////////////// 
UIGraphicsEndImageContext(); 

享受！