UITextView IBDesignable填充

Question

如何创建IBDesignable def FileCheck(self, filedirectory, fileextension, searchparameter): total = 0 datetoday = time.strftime("%Y%m%d%I%M") filename = "%s%s%s" % (filedirectory, datetoday, fileextension) inputfile = open(filename) for line in inputfile: if re.search(searchparameter, line): print('Search Match Found!') if line != 1 and line != 0: total += 1 print total time.sleep(3) 以便我可以在界面构建器中调整文本的插入内容？我添加了可检查属性UITextView，topInset等，但现在我无法弄清楚如何实际更新bottomInset的插入内容，以便更改反映在IB中

UITextView

Answer 1

这就是你需要做的所有事情：

<?xml version="1.0"?>
<MPD
    type="dynamic"
    xmlns="urn:mpeg:dash:schema:mpd:2011"
    availabilityStartTime="2017-04-27T11:22:32+08:00"
    availabilityEndTime="2017-04-27T11:23:17+08:00"
    minimumUpdatePeriod="PT5S"
    minBufferTime="PT5S"
    timeShiftBufferDepth="PT0H0M0.00S"
    suggestedPresentationDelay="PT10S"
    profiles="urn:hbbtv:dash:profile:isoff-live:2012,urn:mpeg:dash:profile:isoff
-live:2011"
    xmlns:xsi="http://www.w3.org/2011/XMLSchema-instance"
    xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011 DASH-MPD.xsd">
  <Period start="PT0S" id="dash">
    <AdaptationSet
        id="1"
        segmentAlignment="true"
        maxWidth="1280"
        maxHeight="720"
        maxFrameRate="23">
      <Representation
          id="elemental_H264"
          mimeType="video/mp4"
          codecs="avc1.4d401f"
          width="1280"
          height="720"
          frameRate="23"
          sar="1:1"
          startWithSAP="1"
          bandwidth="5000000">
        <SegmentTemplate
            presentationTimeOffset="0"
            timescale="1000"
            media="elemental-$Time$.m4v"
            initialization="elemental-init.m4v">
          <SegmentTimeline>
             <S t="3703228922" d="7508"/>
             <S t="3703236430" d="7507"/>
             <S t="3703243937" d="7508"/>
             <S t="3703251445" d="7507"/>
             <S t="3703258952" d="7508"/>
             <S t="3703266460" d="7507"/>
          </SegmentTimeline>
        </SegmentTemplate>
      </Representation>
    </AdaptationSet>
    <AdaptationSet
        id="2"
        segmentAlignment="true">
      <AudioChannelConfiguration
          schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011"
          value="1"/>
      <Representation
          id="elemental_AAC"
          mimeType="audio/mp4"
          codecs="mp4a.40.2"
          audioSamplingRate="48000"
          startWithSAP="1"
          bandwidth="96000">
        <SegmentTemplate
            presentationTimeOffset="0"
            timescale="1000"
            media="elemental-$Time$.m4a"
            initialization="elemental-init.m4a">
          <SegmentTimeline>
             <S t="3703228922" d="7508"/>
             <S t="3703236430" d="7507"/>
             <S t="3703243937" d="7508"/>
             <S t="3703251445" d="7507"/>
             <S t="3703258952" d="7508"/>
             <S t="3703266460" d="7507"/>
          </SegmentTimeline>
        </SegmentTemplate>
      </Representation>
    </AdaptationSet>
  </Period>
</MPD>

如您所见，这些是我创建的import UIKit @IBDesignable class TextViewWithInsets: UITextView { @IBInspectable var topInset: CGFloat = 0 { didSet { self.contentInset = UIEdgeInsetsMake(topInset, self.contentInset.left, self.contentInset.bottom, self.contentInset.right) } } @IBInspectable var bottmInset: CGFloat = 0 { didSet { self.contentInset = UIEdgeInsetsMake(self.contentInset.top, self.contentInset.left, bottmInset, self.contentInset.right) } } @IBInspectable var leftInset: CGFloat = 0 { didSet { self.contentInset = UIEdgeInsetsMake(self.contentInset.top, leftInset, self.contentInset.bottom, self.contentInset.right) } } @IBInspectable var rightInset: CGFloat = 0 { didSet { self.contentInset = UIEdgeInsetsMake(self.contentInset.top, self.contentInset.left, self.contentInset.bottom, rightInset) } } } TextViewWithInsets子类的属性。您需要覆盖属性方法的UITextView部分。然后，在Interface Builder中，这四个属性（Top Inset，Bottit Inset，Left Inset和Right Inset）将出现在Attributes Inspector中：attributes inspector in IB for new class

只需确保在Identity Inspector中将Storyboard中的TextView对象设置为didSet或您选择的任何名称，如下所示：Set class of Text View object in storyboard to custom class

Answer 2

快速5

如果要将其用于项目中的所有UITextView，请使用以下内容：

import UIKit
@IBDesignable extension UITextView {

    @IBInspectable var topPadding: CGFloat {
        get {
            return contentInset.top
        }
        set {
            self.contentInset = UIEdgeInsets(top: newValue,
                                             left: self.contentInset.left,
                                             bottom: self.contentInset.bottom,
                                             right: self.contentInset.right)
        }
    }

    @IBInspectable var bottomPadding: CGFloat {
        get {
            return contentInset.bottom
        }
        set {
            self.contentInset = UIEdgeInsets(top: self.contentInset.top,
                                             left: self.contentInset.left,
                                             bottom: newValue,
                                             right: self.contentInset.right)
        }
    }

    @IBInspectable var leftPadding: CGFloat {
        get {
            return contentInset.left
        }
        set {
            self.contentInset = UIEdgeInsets(top: self.contentInset.top,
                                             left: newValue,
                                             bottom: self.contentInset.bottom,
                                             right: self.contentInset.right)
        }
    }

    @IBInspectable var rightPadding: CGFloat {
        get {
            return contentInset.right
        }
        set {
            self.contentInset = UIEdgeInsets(top: self.contentInset.top,
                                             left: self.contentInset.left,
                                             bottom: self.contentInset.bottom,
                                             right: newValue)
        }
    }
}