[Settings] Code refactor for combining TelephonyCallback with Lifecycle

This is a helper class which may support monitoring the
TelephonyCallback under the condition of Lifecycle state STARTED or
RESUMED.

Bug: 229689535
Test: unit test
Change-Id: I6d26bee604d9559e207e107b2f26583f700f8e0a
(cherry picked from commit 7c5259efad)

src/com/android/settings/network/helper/LifecycleCallbackTelephonyAdapter.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2022 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.network.helper;
+
+import android.telephony.TelephonyCallback;
+import android.telephony.TelephonyManager;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+import androidx.lifecycle.Lifecycle;
+
+import java.util.concurrent.Executor;
+import java.util.function.Consumer;
+
+/**
+ * A {@link LifecycleCallbackConverter} for supporting the register/unregister work for
+ * {@link TelephonyCallback}.
+ */
+@VisibleForTesting
+public class LifecycleCallbackTelephonyAdapter<T> extends LifecycleCallbackConverter<T> {
+    private static final String TAG = "LifecycleCallbackTelephony";
+
+    private final Runnable mRegisterCallback;
+    private final Runnable mUnRegisterCallback;
+
+    /**
+     * Constructor
+     * @param lifecycle {@link Lifecycle} to monitor
+     * @param telephonyManager {@link TelephonyManager} to interact with
+     * @param telephonyCallback {@link TelephonyCallback}
+     * @param executor {@link Executor} for receiving the notify from telephony framework.
+     * @param resultCallback for the result from {@link TelephonyCallback}
+     */
+    @VisibleForTesting
+    public LifecycleCallbackTelephonyAdapter(@NonNull Lifecycle lifecycle,
+            @NonNull TelephonyManager telephonyManager,
+            @NonNull TelephonyCallback telephonyCallback,
+            Executor executor, @NonNull Consumer<T> resultCallback) {
+        super(lifecycle, resultCallback);
+
+        // Register operation
+        mRegisterCallback = () -> {
+            telephonyManager.registerTelephonyCallback(executor, telephonyCallback);
+        };
+
+        // Un-Register operation
+        mUnRegisterCallback = () -> {
+            telephonyManager.unregisterTelephonyCallback(telephonyCallback);
+        };
+    }
+
+    @Override
+    public void setCallbackActive(boolean isActive) {
+        super.setCallbackActive(isActive);
+        Runnable op = (isActive) ? mRegisterCallback : mUnRegisterCallback;
+        op.run();
+    }
+}