How do I tell if my textview has been ellipsized?

Question

I have a multi-line TextView that has android:ellipsize=\"end\" set. I would like to know, however, if the string I place in there is actually too

Answer 1

create a method inside your TextViewUtils class

public static boolean isEllipsized(String newValue, String oldValue) {
    return !((newValue).equals(oldValue));
}

call this method when it's required eg:

        if (TextViewUtils.isEllipsized(textviewDescription.getLayout().getText().toString(), yourModelObject.getDescription()))
            holder.viewMore.setVisibility(View.VISIBLE);//show view more option
        else
            holder.viewMore.setVisibility(View.GONE);//hide 

but textView.getLayout() can't call before the view(layout) set.

Answer 2

You can get the layout of the TextView and check the ellipsis count per line. For an end ellipsis, it is sufficient to check the last line, like this:

Layout l = textview.getLayout();
if (l != null) {
    int lines = l.getLineCount();
    if (lines > 0)
        if (l.getEllipsisCount(lines-1) > 0)
            Log.d(TAG, "Text is ellipsized");
}

This only works after the layout phase, otherwise the returned layout will be null, so call this at an appropriate place in your code.

Answer 3

In Kotlin, you can use the below code.

var str= "Kotlin is one of the best languages."
textView.text=str
textView.post {
val isEllipsize: Boolean = !textView.layout.text.toString().equals(str)

if (isEllipsize) {
     holder.itemView.tv_viewMore.visibility = View.VISIBLE
} else {
     holder.itemView.tv_viewMore.visibility = View.GONE
}    
}

Answer 4

Simple Kotlin method. Allows android:ellipsize and android:maxLines to be used

fun isEllipsized(textView: TextView, text: String?) = textView.layout.text.toString() != text

Answer 5

public int getEllipsisCount (int line):

Returns the number of characters to be ellipsized away, or 0 if no ellipsis is to take place.

So, simply call :

int lineCount = textview1.getLineCount();

if(textview1.getLayout().getEllipsisCount(lineCount) > 0) {
   // Do anything here..
}

Since the getLayout() cant be called before the layout is set, use this:

ViewTreeObserver vto = textview.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
       Layout l = textview.getLayout();
       if ( l != null){
          int lines = l.getLineCount();
          if ( lines > 0)
              if ( l.getEllipsisCount(lines-1) > 0)
                Log.d(TAG, "Text is ellipsized");
       }  
    }
});

And finally do not forget to remove removeOnGlobalLayoutListener when you need it nomore.

Answer 6

Really work so, for example, to pass full data to dialog from item of RecyclerView:

holder.subInfo.post(new Runnable() {
                @Override
                public void run() {
                    Layout l = holder.subInfo.getLayout();
                    if (l != null) {
                        final int count = l.getLineCount();
                        if (count >= 3) {
                            holder.subInfo.setOnClickListener(new View.OnClickListener() {
                                @Override
                                public void onClick(View view) {
                                    final int c = holder.subInfo.getLineCount();
                                    if (c >= 3) {
                                        onClickToShowInfoDialog.showDialog(holder.title.getText().toString(), holder.subInfo.getText().toString());
                                    }
                                }
                            });
                        }
                    }
                }
            });