你如何在 Android XML 中给文本加下划线？
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How do you underline a text in Android XML?
提问by Michael Zeuner
How do you underline a text in an XML file? I can't find an option in textStyle.
如何在 XML 文件中给文本加下划线？我在中找不到选项textStyle。
回答by George Artemiou
If you are using a string resource xml file (supports HTML tags), it can be done using<b> </b>, <i> </i>and <u> </u>.
如果您使用的是字符串资源 xml 文件（支持 HTML 标签），则可以使用<b> </b>,<i> </i>和来完成<u> </u>。
<resources>
<string name="your_string_here">
This is an <u>underline</u>.
</string>
</resources>
If you want to underline something from code use:
如果您想从代码中强调某些内容，请使用：
TextView tv = (TextView) view.findViewById(R.id.tv);
SpannableString content = new SpannableString("Content");
content.setSpan(new UnderlineSpan(), 0, content.length(), 0);
tv.setText(content);
Hope this helps
希望这可以帮助
回答by abh22ishek
Use this:
用这个：
TextView txt = (TextView) findViewById(R.id.Textview1);
txt.setPaintFlags(txt.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
回答by Bhavin
<resource>
<string name="your_string_here">This is an <u>underline</u>.</string>
</resources>
If it does not work then
如果它不起作用那么
<resource>
<string name="your_string_here">This is an <u>underline</u>.</string>
Because "<" could be a keyword at some time.
因为“<”有时可能是关键字。
And for Displaying
并用于显示
TextView textView = (TextView) view.findViewById(R.id.textview);
textView.setText(Html.fromHtml(getString(R.string.your_string_here)));
回答by Jawad Zeb
First of all, go to String.xml file
首先，转到String.xml文件
you can add any HTML attributes like , italic or bold or underline here.
您可以在此处添加任何 HTML 属性，例如 、斜体、粗体或下划线。
<resources>
<string name="your_string_here">This is an <u>underline</u>.</string>
</resources>
回答by Tharkius
Another way to do it, is creating a custom component extending TextView. It's good for cases where you need to have multiple underlined TextViews.
另一种方法是创建一个扩展 TextView 的自定义组件。这适用于需要多个带下划线的 TextViews 的情况。
Here's the code for the component:
这是组件的代码：
package com.myapp.components;
import android.content.Context;
import android.support.v7.widget.AppCompatTextView;
import android.text.SpannableString;
import android.text.style.UnderlineSpan;
import android.util.AttributeSet;
public class LinkTextView extends AppCompatTextView {
public LinkTextView(Context context) {
this(context, null);
}
public LinkTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void setText(CharSequence text, BufferType type) {
SpannableString content = new SpannableString(text);
content.setSpan(new UnderlineSpan(), 0, content.length(), 0);
super.setText(content, type);
}
}
And how to use it in xml:
以及如何在 xml 中使用它：
<com.myapp.components.LinkTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello World!" />
回答by Anandharaj R
There are different ways to achieve underlined text in an Android TextView.
有多种方法可以在 Android TextView 中实现带下划线的文本。
1.<u>This is my underlined text</u>or
1.<u>This is my underlined text</u>或
I just want to underline <u>this</u> word
2.You can do the same programmatically.
2.您可以以编程方式执行相同操作。
`textView.setPaintFlags(textView.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);`
3.It can be done by creating a SpannableString and then setting it as the TextView text property
3.可以通过创建一个 SpannableString 然后将其设置为 TextView 文本属性来完成
SpannableString text = new SpannableString("Voglio sottolineare solo questa parola");
text.setSpan(new UnderlineSpan(), 25, 6, 0);
textView.setText(text);
回答by MazRoid
If you want to compare text String or the text will change dynamically then you can created a view in Constraint layout it will adjust according to text length like this
如果你想比较文本字符串或者文本会动态变化，那么你可以在约束布局中创建一个视图，它会像这样根据文本长度进行调整
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/txt_Previous"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="8dp"
android:gravity="center"
android:text="Last Month Rankings"
android:textColor="@color/colorBlue"
android:textSize="15sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<View
android:layout_width="0dp"
android:layout_height="0.7dp"
android:background="@color/colorBlue"
app:layout_constraintEnd_toEndOf="@+id/txt_Previous"
app:layout_constraintStart_toStartOf="@+id/txt_Previous"
app:layout_constraintBottom_toBottomOf="@id/txt_Previous"/>
</android.support.constraint.ConstraintLayout>
回答by Anthone
To complete Bhavin answer. For exemple, to add underline or redirection.
完成 Bhavin 的回答。例如，添加下划线或重定向。
((TextView) findViewById(R.id.tv_cgu)).setText(Html.fromHtml(getString(R.string.upload_poi_CGU)));
<string name="upload_poi_CGU"><![CDATA[ J\'accepte les <a href="">conditions générales</a>]]></string>
and you can know compatible tag here : http://commonsware.com/blog/Android/2010/05/26/html-tags-supported-by-textview.html
你可以在这里知道兼容标签：http: //commonsware.com/blog/Android/2010/05/26/html-tags-supported-by-textview.html
回答by Hitesh Dhamshaniya
I used below method, it worked for me. Below is example for Button but we can use in TextView as well.
我使用了下面的方法，它对我有用。下面是 Button 的示例，但我们也可以在 TextView 中使用。
Button btnClickMe = (Button) findViewById(R.id.btn_click_me);
btnClickMe.setPaintFlags(btnClickMe.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
回答by Tebo
You can use the markup below, but note that if you set the textAllCapsto truethe underline effect would be removed.
您可以使用下面的标记，但请注意，如果将 设置textAllCaps为true下划线效果将被删除。
<resource>
<string name="my_string_value">I am <u>underlined</u>.</string>
</resources>
Note
笔记
Using textAllCaps with a string (login_change_settings) that contains markup; the markup will be dropped by the caps conversion
将 textAllCaps 与包含标记的字符串 (login_change_settings) 一起使用；大写转换将删除标记
The textAllCaps text transform will end up calling toString on the CharSequence, which has the net effect of removing any markup such as . This check looks for usages of strings containing markup that also specify textAllCaps=true.
textAllCaps 文本转换最终将调用 CharSequence 上的 toString，这具有删除任何标记（例如 . 此检查查找包含也指定 textAllCaps=true 的标记的字符串的用法。
