使用Spannable的TextView-ellipsize不起作用 [英] TextView using Spannable - ellipsize doesn't work

问题描述

我要解决的问题如下:我正在使用TextView，并且正在使用Spannable将某些字符设置为粗体. 文本的最大长度为2行(android:maxLines="2")，我希望将文本椭圆化，但是由于某种原因，我无法使文本变为椭圆形.

The issue I'm trying to fix is the following: I'm having a TextView and I'm using a Spannable to set some characters bold. The text needs to have a maxim of 2 lines ( android:maxLines="2") and I want the text to be ellipsized, but for some reason I cannot make the text ellipsized.

这是简单的代码:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent">

    <TextView android:id="@+id/name"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:gravity="center"
              android:maxLines="2"
              android:ellipsize="end"
              android:bufferType="spannable"
              android:text="@string/app_name"
              android:textSize="15dp"/>

</LinearLayout>

和活动:

public class MyActivity extends Activity {

    private TextView name;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        name= (TextView) findViewById(R.id.name);


        name.setText("Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy ");
        Spannable spannable = (Spannable)name.getText();
        StyleSpan boldSpan = new StyleSpan( Typeface.BOLD );
        spannable.setSpan( boldSpan, 10, 15, Spannable.SPAN_INCLUSIVE_INCLUSIVE );

    }
}

文本被截断，不显示"...".

The text is truncated, no "..." are displayed.

推荐答案

我意识到这是一篇很老的文章，但是由于仍然没有答案，所以我今天也遇到了这个问题，我想我应该发布一个解决方案.希望它对将来的人有所帮助.

I realise this is a very old post, but seeing as it's still unanswered and I also ran into this issue today I thought I would post a solution to this. Hopefully it helps someone in the future.

ViewTreeObserver viewTreeObserver = textView.getViewTreeObserver();
viewTreeObserver.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener()
{
    @Override
    public void onGlobalLayout()
    {
        ViewTreeObserver viewTreeObserver = textView.getViewTreeObserver();
        viewTreeObserver.removeOnGlobalLayoutListener(this);

        if (textView.getLineCount() > 5)
        {
            int endOfLastLine = textView.getLayout().getLineEnd(4);
            String newVal = textView.getText().subSequence(0, endOfLastLine - 3) + "...";
            textView.setText(newVal);
        }
    }
});

这篇关于使用Spannable的TextView-ellipsize不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！