fix for issue #2 when text takes up less line than threshold, do not…

app/src/main/java/at/blogc/android/activities/MainActivity.java

@@ -39,6 +39,8 @@ protected void onCreate(final Bundle savedInstanceState)
         final ExpandableTextView expandableTextView = (ExpandableTextView) this.findViewById(R.id.expandableTextView);
         final Button buttonToggle = (Button) this.findViewById(R.id.button_toggle);
 
+        expandableTextView.setToggleButton(buttonToggle);
+
         // set animation duration via code, but preferable in your layout files by using the animation_duration attribute
         expandableTextView.setAnimationDuration(750L);
 

app/src/main/res/values/lorem_ipsum.xml

@@ -17,4 +17,5 @@
 
     <string name="lorem_ipsum">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse a risus sed nulla faucibus commodo. Donec iaculis pretium facilisis. Praesent rutrum varius arcu, sed viverra ipsum malesuada id. Suspendisse nec mauris eleifend, maximus elit et, venenatis quam. Duis at maximus nisi, a congue sapien. Curabitur facilisis at nisi vitae vulputate. Phasellus vel orci et massa scelerisque ultrices. Morbi eget ipsum porttitor arcu volutpat convallis. Pellentesque velit libero, interdum sed consequat at, eleifend et nisi. Interdum et malesuada fames ac ante ipsum primis in faucibus. Sed convallis massa imperdiet, consectetur lectus sodales, finibus velit. Donec quis tortor vel quam porta hendrerit. Vivamus vitae consectetur orci, sed feugiat turpis.</string>
 
+    <string name="short_string">Lorem ipsum dolor sit amet, consectetur adipiscing elit. </string>
 </resources>

expandabletextview/src/main/java/at/blogc/android/views/ExpandableTextView.java

@@ -8,6 +8,7 @@
 import android.content.res.TypedArray;
 import android.os.Build;
 import android.util.AttributeSet;
+import android.view.View;
 import android.view.ViewGroup;
 import android.view.animation.AccelerateDecelerateInterpolator;
 import android.widget.TextView;
@@ -48,6 +49,7 @@ public class ExpandableTextView extends TextView
     private boolean animating;
     private boolean expanded;
     private int collapsedHeight;
+    private View mToggleButton;
 
     public ExpandableTextView(final Context context)
     {
@@ -360,4 +362,22 @@ public interface OnExpandListener
          */
         void onCollapse(ExpandableTextView view);
     }
+
+    public void setToggleButton(View mToggleButton) {
+        this.mToggleButton = mToggleButton;
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right,
+                            int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+
+        if (mToggleButton != null) {
+            if(getLineCount() >= this.maxLines){
+                mToggleButton.setVisibility(VISIBLE);
+            }else {
+                mToggleButton.setVisibility(GONE);
+            }
+        }
+    }
 }