我能限制TextView的字符数吗?

What I have now is a ListView of TextView elements. each TextView element displays a text (the text length varies from 12 words to 100+). What I want is to make these TextViews display a portion of the text (let's say 20 word or roughly 170 chars).

我现在有一个TextView元素的ListView。每个TextView元素都显示一个文本(文本长度从12个单词到100+不等)。我想要的是让这些textview显示文本的一部分(比如20个单词或大约170个字符)。

How to limit the TextView to a fixed number of characters?

如何限制TextView的字符数?

6 个解决方案

#1

128

Here is an example. I limit the sizewith the maxLength attribute, limit it to a single line with maxLines attribute, then use the ellipsize=end to add a "..." automatically to the end of any line that has been cut-off.

这是一个例子。我将sizewith maxLength属性限制为只使用maxLines属性的一行，然后使用椭圆体=end在任何已被截断的行尾自动添加一个“…”。

<TextView 
    android:id="@+id/secondLineTextView" 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" 
    android:maxLines="1" 
    android:maxLength="10" 
    android:ellipsize="end"/>

#2

Use below code in TextView

在TextView中使用下面的代码。

 android:maxLength="65"

Enjoy...

享受……

#3

If your not interested in xml solutions maybe you can do this:

如果您对xml解决方案不感兴趣，可以这样做:

String s="Hello world";
Textview someTextView;
someTextView.setText(getSafeSubstring(s, 5));
//the text of someTextView will be Hello

...

…

public String getSafeSubstring(String s, int maxLength){
  if(!TextUtils.isEmpty(s)){
    if(s.length() >= maxLength){
      return s.substring(0, maxLength);
    }
  }
  return s;
}

#4

You can use setEllipsize method of TextView class http://developer.android.com/reference/android/widget/TextView.html#setEllipsize(android.text.TextUtils.TruncateAt)

可以使用TextView类的set椭圆体方法http://developer.android.com/reference/android/widget/TextView.html# set椭圆体(android.text.TextUtils.TruncateAt)

With the constants of TextUtil class for added the suspension points http://developer.android.com/reference/android/text/TextUtils.TruncateAt.html

使用TextUtil类的常量添加悬浮点http://developer.android.com/reference/android/text/TextUtils.TruncateAt.html

#5

As mentioned in https://*.com/a/6165470/1818089 & https://*.com/a/6239007/1818089, using

如https://*.com/a/6165470/1818089和https://*.com/a/6239007/1818089所述。

android:minEms="2"

should be enough to achieve the goal stated above.

应足以实现上述目标。

#6

-5

you can extend the TextView class and overwrite the setText() function. In this function you check for text length or word cound.

可以扩展TextView类并覆盖setText()函数。在这个函数中，检查文本长度或单词数量。

#1

128