在TextView后面添加背景图片

Question

嘿伙计们， 有谁知道如何使文本视图透明并在文本视图后面添加背景图像？谢谢

Answer 1

在 viewDidLoad 中

textView.backgroundColor = [UIColor clearColor];
UIImageView *imageView = [[[UIImageView alloc] initWithFrame:textView.frame] autorelease];
imageView.image = [UIImage imageNamed:@"myBackgroundImage.png"];
[self.view addSubview:imageView];
[self.view bringSubviewToFront:textView];

Answer 2

尝试创建一个新类。 （没有测试代码，只是在论坛上输入的，尝试使用代码否则：使用概念）

@interface TextViewWithImage : UIView {
   UITextView *textView;
   UIImageView *imageView;
}

@property (retain, readonly) UITextView *textView;
@property (retain, readonly) UIImageView *imageView;

@implementation TextViewWithImage

- (id) init {
   if (self = [super init]) {
      [self setupContentViews];
   }
   return self;
}

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

- (void) setupContentViews {
   textView = [[UITextView alloc] init];
   imageView = [[UIImageView alloc] init];

   textView.frame = self.frame;
   imageView.frame = self.frame;

   textView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
   imageView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
}

- (void) dealloc {
   [textView release];
   [imageView release];
   [super dealloc];
}
@end

Answer 3

UIViews（UITextView 是其子类）有一个名为backgroundColor 的属性。

@property(nonatomic, copy) UIColor *backgroundColor

尝试在 TextView 上调用 [textView setBackgroundColor:[UIColor clearColor]] 并在其后面放置一个图像视图。