Add FutureTask approach in DashboardFragment

- Use the multiple tasks to enhance the controllers loading. Bug: 137558156 Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.dashboard Change-Id: I629ff5dc81347cddf9762a87015b9b86b6a46e50
2019-11-18 16:38:19 +08:00
parent 01cf29b958
commit 3351c78b74
6 changed files with 412 additions and 3 deletions
--- a/src/com/android/settings/dashboard/ControllerTask.java
+++ b/src/com/android/settings/dashboard/ControllerTask.java
@@ -0,0 +1,90 @@
+/*
+ * 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.dashboard;
+
+import android.app.settings.SettingsEnums;
+import android.os.SystemClock;
+import android.text.TextUtils;
+import android.util.Log;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settingslib.core.AbstractPreferenceController;
+import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
+import com.android.settingslib.utils.ThreadUtils;
+
+/**
+ * A {@link Runnable} controller task. This task handle the visibility of the controller in the
+ * background. Also handle the state updating in the main thread.
+ */
+public class ControllerTask implements Runnable {
+    private static final String TAG = "ControllerTask";
+    private static final int CONTROLLER_UPDATESTATE_TIME_THRESHOLD = 50;
+
+    private final AbstractPreferenceController mController;
+    private final PreferenceScreen mScreen;
+    private final int mMetricsCategory;
+    private final MetricsFeatureProvider mMetricsFeature;
+
+    public ControllerTask(AbstractPreferenceController controller, PreferenceScreen screen,
+            MetricsFeatureProvider metricsFeature, int metricsCategory) {
+        mController = controller;
+        mScreen = screen;
+        mMetricsFeature = metricsFeature;
+        mMetricsCategory = metricsCategory;
+    }
+
+    @Override
+    public void run() {
+        if (!mController.isAvailable()) {
+            return;
+        }
+
+        final String key = mController.getPreferenceKey();
+        if (TextUtils.isEmpty(key)) {
+            Log.d(TAG, String.format("Preference key is %s in Controller %s",
+                    key, mController.getClass().getSimpleName()));
+            return;
+        }
+
+        final Preference preference = mScreen.findPreference(key);
+        if (preference == null) {
+            Log.d(TAG, String.format("Cannot find preference with key %s in Controller %s",
+                    key, mController.getClass().getSimpleName()));
+            return;
+        }
+        ThreadUtils.postOnMainThread(() -> {
+            final long t = SystemClock.elapsedRealtime();
+            mController.updateState(preference);
+            final int elapsedTime = (int) (SystemClock.elapsedRealtime() - t);
+            if (elapsedTime > CONTROLLER_UPDATESTATE_TIME_THRESHOLD) {
+                Log.w(TAG, "The updateState took " + elapsedTime + " ms in Controller "
+                        + mController.getClass().getSimpleName());
+                if (mMetricsFeature != null) {
+                    mMetricsFeature.action(SettingsEnums.PAGE_UNKNOWN,
+                            SettingsEnums.ACTION_CONTROLLER_UPDATE_STATE, mMetricsCategory,
+                            mController.getClass().getSimpleName(), elapsedTime);
+                }
+            }
+        });
+    }
+
+    AbstractPreferenceController getController() {
+        return mController;
+    }
+}