UITextView新增背景圖片
一、給UITextView繪製圓角,通過QuartzCore框架,操作CALayer可以給UITextView繪製圓角邊框。
textView.layer.cornerRadius = 6
textView.layer.masksToBounds = YES
通過cornerRadius可設定圓角弧度。
二、UITextView和UIImageView組合,將背景圖片製作好載入進UIImageView。
CGRect imageViewFrame = CGRectMake(30.0,100.0,240.0,90.0);
UIImageView *imageView = [[UIImageView alloc] initWithFrame:imageViewFrame];
imageView.image = [UIImage imageNamed:@"background.png"];
imageView.userInteractionEnabled = YES;
CGRect textViewFrame = CGRectMake(5.0,5.0,230.0,80.0);
UITextView *textView = [[UITextView alloc] initWithFrame:textViewFrame];
textView.backgroundColor = [UIColor clearColor];
[imageView addSubview:textView];
設定imageView.userInteractionEnabled = YES,讓textView響應觸碰事件。
三、設定UITextView背景圖片,在UITextView區域內。
CGRect textViewFrame = CGRectMake(30.0,100.0,240.0,90.0);
UITextView *textView = [[UITextView alloc] initWithFrame:textViewFrame];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:[textView bounds]];
imageView.image = [UIImage imageNamed:@"background.png"];
[textView addSubview:imageView];
[textView sendSubviewToBack:imageView];
看到的另一種方法,這個方法我已經實驗過了,可行:
- UITextView *textView = [[UITextView alloc]initWithFrame: window.frame];
- textView.text = @"text\n text\n text";
- UIImageView *imgView = [[UIImageView alloc]initWithFrame: textView.frame];
- imgView.image = [UIImage imageNamed: @"myImage.jpg"];
- [self.view addSubview: imgView];
- [self.view sendSubviewToBack: imgView];
- [self.view addSubview: textView];
- 但是注意,5,6,7行我修改過,原來的程式碼是:
- [textView addSubview: imgView];
- [textView sendSubviewToBack: imgView];
- [self.view addSubview: textView];
- 這樣實際上是把imgview作為了textview的一個字檢視先加進來,然後把textview在加入到當前檢視,這樣做的不好處就是imgview因為是textview的一個字檢視,所以大小跟textview一樣,也就是說你沒法設定整個頁面的背景,如果你的textview不是全屏的話