Add an activity to show an ime switch dialog

Bug: 4671417

Change-Id: I8e29dbfb3d0bbb9270888ac757f53542ce658ba9

AndroidManifest.xml

@@ -375,6 +375,18 @@
             </intent-filter>
         </activity>
 
+        <activity android:name=".inputmethod.InputMethodDialogActivity"
+                android:theme="@android:style/Theme.Holo"
+                android:clearTaskOnLaunch="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.settings.SHOW_INPUT_METHOD_PICKER" />
+                <category android:name="android.intent.category.VOICE_LAUNCH" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="com.android.settings.SHORTCUT" />
+            </intent-filter>
+        </activity>
+
         <activity android:name="Settings$InputMethodConfigActivity"
                 android:theme="@android:style/Theme.Holo"
                 android:label="@string/configure_input_method"

src/com/android/settings/inputmethod/InputMethodDialogActivity.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.settings.inputmethod;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.inputmethod.InputMethodManager;
+
+public class InputMethodDialogActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        ((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE)).
+                showInputMethodPicker();
+        finish();
+    }
+}