Fix some long forgottten TTS settings bugs

- Handle radio button clicks correctly
- Handle injecting voice data correctly

bug:5998256
bug:5938852
bug:5998418
Change-Id: Ib30afa6558e51ac9a88e28c51500ebaad93ad7fe

src/com/android/settings/tts/TtsEnginePreference.java

@@ -16,8 +16,6 @@
 
 package com.android.settings.tts;
 
-import com.android.settings.R;
-
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
@@ -31,6 +29,9 @@ import android.widget.CompoundButton;
 import android.widget.RadioButton;
 
 
+import com.android.settings.R;
+
+
 public class TtsEnginePreference extends Preference {
 
     /**
@@ -173,7 +174,8 @@ public class TtsEnginePreference extends Preference {
     }
 
     private void onRadioButtonClicked(CompoundButton buttonView, boolean isChecked) {
-        if (mPreventRadioButtonCallbacks) {
+        if (mPreventRadioButtonCallbacks ||
+                (mSharedState.getCurrentChecked() == buttonView)) {
             return;
         }