Clear current input method when a current ime was disabled.

Change-Id: Iade2c025e686bce47a94daa96bc0787431fafa01
diff --git a/src/com/android/settings/inputmethod/InputMethodAndLanguageSettings.java b/src/com/android/settings/inputmethod/InputMethodAndLanguageSettings.java
index 117bec5..a4808b0 100644
--- a/src/com/android/settings/inputmethod/InputMethodAndLanguageSettings.java
+++ b/src/com/android/settings/inputmethod/InputMethodAndLanguageSettings.java
@@ -21,29 +21,15 @@
 import com.android.settings.Utils;
 import com.android.settings.VoiceInputOutputSettings;
 
-import android.app.AlertDialog;
 import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.pm.ApplicationInfo;
-import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.os.Bundle;
-import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
-import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
-import android.text.TextUtils;
-import android.util.Log;
-import android.view.inputmethod.InputMethodInfo;
 import android.view.inputmethod.InputMethodManager;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-
 public class InputMethodAndLanguageSettings extends SettingsPreferenceFragment
         implements Preference.OnPreferenceChangeListener{
 
diff --git a/src/com/android/settings/inputmethod/InputMethodAndSubtypeUtil.java b/src/com/android/settings/inputmethod/InputMethodAndSubtypeUtil.java
index 6981927..03c5ea1 100644
--- a/src/com/android/settings/inputmethod/InputMethodAndSubtypeUtil.java
+++ b/src/com/android/settings/inputmethod/InputMethodAndSubtypeUtil.java
@@ -204,6 +204,7 @@
                     if (DEBUG) {
                         Log.d(TAG, "Current IME was uninstalled or disabled.");
                     }
+                    currentInputMethodId = null;
                 }
             }
             // If it's a disabled system ime, add it to the disabled list so that it