多行NSAttributed String作为UIButton标题

Question

我的问题在理论上与此类似：iOS NSAttributedString on UIButton

我希望将我的按钮标题改为：

＆＃34;带下划线的字符串

一些文字＆＃34;

这需要以swift和100％以编程方式完成。

我试图通过使用NSMutableAttributedString创建带下划线的部分，然后将其附加到其他文本（带有换行符字符）来尝试这样做。但是，这给了我错误＆＃34;无法分配类型＆＃39; Void＆＃39; （＆＃39;又名＆＃39;（）＆＃39;）输入＆＃39; NSMutableAttributedString＆＃34;

以下代码：

var patientName = NSMutableAttributedString(string:"Patient Name", attributes: underlineAttributes)
var clickforinfomessage = NSMutableAttributedString(string: "\nclick for patient info")
clickforinfomessage = clickforinfomessage.appendAttributedString(patientName)
startVisitButton.setAttributedTitle(clickforinfomessage, forState: .Normal)

Answer 1

你可以这样做：

let dict1 = [NSUnderlineStyleAttributeName: NSUnderlineStyle.StyleSingle.rawValue]

let attString = NSMutableAttributedString()
attString.appendAttributedString(NSAttributedString(string: "Patient Name\n", attributes: dict1))
attString.appendAttributedString(NSAttributedString(string: "click for patient info", attributes: nil))
startVisitButton.setAttributedTitle(attString, forState: .Normal)
startVisitButton.titleLabel?.numberOfLines = 0
startVisitButton.titleLabel?.lineBreakMode = NSLineBreakMode.ByWordWrapping

结果将是：

Answer 2

只需设置按钮标题标签的行数

即可

public Intent getNativeShareIntent(final Context context) {
  final String defaultChannel = shareObject.getDefaultChannel();

  final PackageManager pm = context.getPackageManager();
  final Intent sendIntent = new Intent(Intent.ACTION_SEND);
  sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
  sendIntent.setType("image/jpeg");      
  List<ResolveInfo> resInfo = pm.queryIntentActivities(sendIntent, 0);
  List<LabeledIntent> intentList = new ArrayList<>();

  for (int i = 0; i < resInfo.size(); i++) {
        ResolveInfo ri = resInfo.get(i);
        String packageName = ri.activityInfo.packageName;         
        final Intent intent = new Intent();
        intent.setComponent(new ComponentName(packageName, ri.activityInfo.name));
        intent.setPackage(packageName);
        intent.setAction(Intent.ACTION_SEND);
        intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
        intent.setType("image/jpeg");      
        intentList.add(new LabeledIntent(intent, packageName, ri.loadLabel(pm),
              ri.getIconResource()));
  }

  // TODO Implement the method getSaveToGalleryIntent, 
  // Could be a simple intent linking to activity.
  intentList.add(getSaveToGalleryIntent(context));

  Intent openInChooser = Intent.createChooser(intentList.remove(0),
        "Share");
  LabeledIntent[] extraIntents = intentList.toArray(new LabeledIntent[intentList.size()]);
  openInChooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents);
  return openInChooser;
}

 private Intent getSaveToGalleryIntent(final Context context, final Uri imgUrl) {
     final Intent intent = new Intent(context, SaveToGalleryActivity.class);
     intent.putExtra(SaveToGalleryActivity.EXTRA_KEY_CONTENT, imgUrl);
  return new LabeledIntent(intent, BuildConfig.APPLICATION_ID,
        "Save to gallery",
        R.drawable.ic_save_to_gallery);
 }

代码视图：

XAMPP

输出：