Support self-explanatory icon for GET INKEY and GET INPUT commands

Self-explanatory icon should be supported for GET INKEY and GET INPUT
like the other proactive commands, e.g. DISPLAY TEXT. The STK
application must check the icon qualifier propagated from the framework.

Bug: 30081488
Change-Id: I43cb2c4273e62c9195cd22c2dd83683e97217632
diff --git a/src/com/android/stk/StkInputActivity.java b/src/com/android/stk/StkInputActivity.java
index 53bea93..4dbad00 100644
--- a/src/com/android/stk/StkInputActivity.java
+++ b/src/com/android/stk/StkInputActivity.java
@@ -357,7 +357,11 @@
         int inTypeId = R.string.alphabet;
 
         // set the prompt.
-        mPromptView.setText(mStkInput.text);
+        if (mStkInput.iconSelfExplanatory && mStkInput.icon != null) {
+            mPromptView.setVisibility(View.GONE);
+        } else {
+            mPromptView.setText(mStkInput.text);
+        }
 
         // Set input type (alphabet/digit) info close to the InText form.
         if (mStkInput.digitOnly) {