android TextView multi line text of more than 3 lines using the ellipsize attribute invalid solution

TextView properties in the layout file

<TextView
android:id="@+id/businesscardsingle_content_abstract"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:lineSpacingMultiplier="1.0"
android:lines="6"
android:text="@string/agrinbusiness_content"
android:textColor="#7f7f7f"
android:textSize="13sp" />

Controls the number of lines of text displayed in the JAVA code

ViewTreeObserver observer = textAbstract.getViewTreeObserver(); //textAbstract for TextView controls 
observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
ViewTreeObserver obs = textAbstract.getViewTreeObserver();
obs.removeGlobalOnLayoutListener(this);
if(textAbstract.getLineCount() > 6) // Determines how many rows are greater than 
　　{
　　　　int lineEndIndex = textAbstract.getLayout().getLineEnd(5); // Set up the first 6 Ellipsis the lines 
　　　　String text = textAbstract.getText().subSequence(0, lineEndIndex-3) +"...";
　　　　textAbstract.setText(text);
　　}
　　}
});