Do not triggerVoiceIME at changing subtype if IME is not shown.

Bug: 3325103

Change-Id: I5474553f0b55f286f573af80134e8ef1eeb39354
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index addc6c7..5e701c1 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -25,9 +25,6 @@
 import com.android.inputmethod.latin.Utils.RingCharBuffer;
 import com.android.inputmethod.voice.VoiceIMEConnector;
 
-import org.xmlpull.v1.XmlPullParser;
-import org.xmlpull.v1.XmlPullParserException;
-
 import android.app.AlertDialog;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -37,7 +34,6 @@
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.content.res.Resources;
-import android.content.res.XmlResourceParser;
 import android.inputmethodservice.InputMethodService;
 import android.media.AudioManager;
 import android.os.Debug;
@@ -74,7 +70,6 @@
 import android.widget.LinearLayout;
 
 import java.io.FileDescriptor;
-import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
diff --git a/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java b/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java
index d696834..e1852b2 100644
--- a/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java
+++ b/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java
@@ -16,7 +16,6 @@
 
 package com.android.inputmethod.latin;
 
-import com.android.inputmethod.keyboard.Keyboard;
 import com.android.inputmethod.keyboard.KeyboardSwitcher;
 import com.android.inputmethod.voice.SettingsUtil;
 import com.android.inputmethod.voice.VoiceIMEConnector;
@@ -433,6 +432,7 @@
     }
 
     private void triggerVoiceIME() {
+        if (!mService.isInputViewShown()) return;
         VoiceIMEConnector.getInstance().startListening(false,
                 KeyboardSwitcher.getInstance().getInputView().getWindowToken(), false);
     }