Add fragment in xml instead of using injected way

- It can improve performance because we use less injected item
- Also remove summary provider from those fragments

Bug: 141653158
Test: robolectric
Change-Id: I6255f71b3b8300aea064a4fefd6711c1ff59e08a

src/com/android/settings/language/LanguageAndInputPreferenceController.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019 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.language;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.provider.Settings;
+import android.text.TextUtils;
+import android.view.inputmethod.InputMethodInfo;
+import android.view.inputmethod.InputMethodManager;
+
+import com.android.settings.core.BasePreferenceController;
+
+import java.util.List;
+
+public class LanguageAndInputPreferenceController extends BasePreferenceController {
+
+    private PackageManager mPackageManager;
+    private InputMethodManager mInputMethodManager;
+
+    public LanguageAndInputPreferenceController(Context context, String key) {
+        super(context, key);
+        mPackageManager = mContext.getPackageManager();
+        mInputMethodManager = mContext.getSystemService(InputMethodManager.class);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        final String flattenComponent = Settings.Secure.getString(
+                mContext.getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD);
+        if (!TextUtils.isEmpty(flattenComponent)) {
+            final String pkg = ComponentName.unflattenFromString(flattenComponent)
+                    .getPackageName();
+            final List<InputMethodInfo> imis = mInputMethodManager.getInputMethodList();
+            for (InputMethodInfo imi : imis) {
+                if (TextUtils.equals(imi.getPackageName(), pkg)) {
+                    return imi.loadLabel(mPackageManager);
+                }
+            }
+        }
+        return "";
+    }
+}