Make battery status refresh in SettingsActivity

Before this cl, the battery text in SettingsActivity is one time update, won't refresh based on real battery status. This cl elicits BatteryBroadcastReceiver from PowerUsageBase and make it reusable in both SettingsActivity and battery page. BatteryBroadcastReceiver will invoke callback if: 1. Battery level changed on integer level(100->99) 2. Battery status has changed(i.e. charging) Bug: 29346753 Test: RunSettingsRoboTests Change-Id: If522d15a700ccbc8bae24f5712e05ec27ea4cbfa
2017-04-14 11:42:04 -07:00
parent c4f08120b1
commit 6246fad7ff
4 changed files with 204 additions and 39 deletions
--- a/src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java
+++ b/src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2017 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.fuelgauge;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.support.annotation.VisibleForTesting;
+
+import com.android.settings.Utils;
+
+/**
+ * Use this broadcastReceiver to listen to the battery change, and it will invoke
+ * {@link OnBatteryChangedListener} if any of the following happens:
+ *
+ * 1. Battery level has been changed
+ * 2. Battery status has been changed
+ */
+public class BatteryBroadcastReceiver extends BroadcastReceiver {
+
+    interface OnBatteryChangedListener {
+        void onBatteryChanged();
+    }
+
+    @VisibleForTesting
+    String mBatteryLevel;
+    @VisibleForTesting
+    String mBatteryStatus;
+    private OnBatteryChangedListener mBatteryListener;
+    private Context mContext;
+
+    public BatteryBroadcastReceiver(Context context) {
+        mContext = context;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        String action = intent.getAction();
+        if (mBatteryListener != null && Intent.ACTION_BATTERY_CHANGED.equals(action)
+                && updateBatteryStatus(intent)) {
+            mBatteryListener.onBatteryChanged();
+        }
+    }
+
+    public void setBatteryChangedListener(OnBatteryChangedListener lsn) {
+        mBatteryListener = lsn;
+    }
+
+    public void register() {
+        mContext.registerReceiver(this,
+                new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+    }
+
+    public void unRegister() {
+        mContext.unregisterReceiver(this);
+    }
+
+    private boolean updateBatteryStatus(Intent intent) {
+        if (intent != null) {
+            String batteryLevel = Utils.getBatteryPercentage(intent);
+            String batteryStatus = Utils.getBatteryStatus(
+                    mContext.getResources(), intent);
+            if (!batteryLevel.equals(mBatteryLevel) || !batteryStatus.equals(mBatteryStatus)) {
+                mBatteryLevel = batteryLevel;
+                mBatteryStatus = batteryStatus;
+                return true;
+            }
+        }
+        return false;
+    }
+
+}