UITextView转UIImage

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//TextView转image
-(UIImage*) saveTextView
{

    //1.设置大小
    CGSize size = _maskText.size;//
    _rect=_maskText.frame;



    if (UIGraphicsBeginImageContextWithOptions != NULL)
        UIGraphicsBeginImageContextWithOptions(size,NO,0);


    // draw in context, you can use drawInRect/drawAtPoint:withFont:

   // 2.设置text属性
    NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];

    paragraphStyle.alignment = NSTextAlignmentCenter;

    NSShadow *shadow=[[NSShadow alloc]init];
    shadow.shadowBlurRadius=2;//模糊度
    shadow.shadowColor=[UIColor blackColor];
    shadow.shadowOffset=CGSizeMake(1, 1);

//设置文字属性

//此处具体设置根据个人情况添加,具体设置请看iOS- 详解文本属性Attributes

    NSDictionary *dict=@{NSFontAttributeName:_maskText.font,NSForegroundColorAttributeName:[UIColor whiteColor],NSParagraphStyleAttributeName:paragraphStyle,NSShadowAttributeName:shadow,NSVerticalGlyphFormAttributeName:@(0)};
    //NSStrokeColorAttributeName:[UIColor blackColor],NSStrokeWidthAttributeName:@0.5

    [_maskText.text drawInRect:CGRectMake(0, 0, size.width, size.height) withAttributes:dict];


    //3. 转换为图片
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();
    _angle=0;
    return image;

}

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