Add error code for BluetoothDevice#getBatteryLevel to represent

Bluetooth is off

Bug: 147428695
Test: Manual
Change-Id: I07c2fa49954632da6aa6a93706883e4cdfd32fa6

3 files changed, 32 insertions, 20 deletions

diff --git a/core/java/android/bluetooth/BluetoothDevice.java b/core/java/android/bluetooth/BluetoothDevice.java
index 838a3b95da24..57a9ae137653 100644
--- a/core/java/android/bluetooth/BluetoothDevice.java
+++ b/core/java/android/bluetooth/BluetoothDevice.java
@@ -230,6 +230,13 @@ public final class BluetoothDevice implements Parcelable {
     public static final int BATTERY_LEVEL_UNKNOWN = -1;
 
     /**
+     * Used as an error value for {@link #getBatteryLevel()} to represent bluetooth is off
+     *
+     * @hide
+     */
+    public static final int BATTERY_LEVEL_BLUETOOTH_OFF = -100;
+
+    /**
      * Used as a Parcelable {@link BluetoothDevice} extra field in every intent
      * broadcast by this class. It contains the {@link BluetoothDevice} that
      * the intent applies to.
@@ -1115,9 +1122,9 @@ public final class BluetoothDevice implements Parcelable {
     /**
      * Get the most recent identified battery level of this Bluetooth device
      *
-     * @return Battery level in percents from 0 to 100, or {@link #BATTERY_LEVEL_UNKNOWN} if
-     * Bluetooth is disabled, or device is disconnected, or does not have any battery reporting
-     * service, or return value is invalid
+     * @return Battery level in percents from 0 to 100, {@link #BATTERY_LEVEL_BLUETOOTH_OFF} if
+     * Bluetooth is disabled or {@link #BATTERY_LEVEL_UNKNOWN} if device is disconnected, or does
+     * not have any battery reporting service, or return value is invalid
      * @hide
      */
     @SystemApi
@@ -1126,7 +1133,7 @@ public final class BluetoothDevice implements Parcelable {
         final IBluetooth service = sService;
         if (service == null) {
             Log.e(TAG, "Bluetooth disabled. Cannot get remote device battery level");
-            return BATTERY_LEVEL_UNKNOWN;
+            return BATTERY_LEVEL_BLUETOOTH_OFF;
         }
         try {
             return service.getBatteryLevel(this);
@@ -1705,7 +1712,9 @@ public final class BluetoothDevice implements Parcelable {
     /**
      * Sets whether the message access is allowed to this device.
      *
-     * @param value is the value we are setting the message access permission to
+     * @param value Can be {@link #ACCESS_UNKNOWN} if the device is unbonded,
+     * {@link #ACCESS_ALLOWED} if the permission is being granted, or {@link #ACCESS_REJECTED} if
+     * the permission is not being granted.
      * @return Whether the value has been successfully set.
      * @hide
      */
@@ -1752,8 +1761,9 @@ public final class BluetoothDevice implements Parcelable {
     /**
      * Sets whether the Sim access is allowed to this device.
      *
-     * @param value Can be {@link #ACCESS_UNKNOWN}, {@link #ACCESS_ALLOWED} or {@link
-     * #ACCESS_REJECTED}.
+     * @param value Can be {@link #ACCESS_UNKNOWN} if the device is unbonded,
+     * {@link #ACCESS_ALLOWED} if the permission is being granted, or {@link #ACCESS_REJECTED} if
+     * the permission is not being granted.
      * @return Whether the value has been successfully set.
      * @hide
      */
diff --git a/packages/SettingsLib/src/com/android/settingslib/bluetooth/CachedBluetoothDevice.java b/packages/SettingsLib/src/com/android/settingslib/bluetooth/CachedBluetoothDevice.java
index 69e2044ad232..bb9d42ecd77c 100644
--- a/packages/SettingsLib/src/com/android/settingslib/bluetooth/CachedBluetoothDevice.java
+++ b/packages/SettingsLib/src/com/android/settingslib/bluetooth/CachedBluetoothDevice.java
@@ -417,7 +417,9 @@ public class CachedBluetoothDevice implements Comparable<CachedBluetoothDevice>
 
     /**
      * Get battery level from remote device
-     * @return battery level in percentage [0-100], or {@link BluetoothDevice#BATTERY_LEVEL_UNKNOWN}
+     * @return battery level in percentage [0-100],
+     * {@link BluetoothDevice#BATTERY_LEVEL_BLUETOOTH_OFF}, or
+     * {@link BluetoothDevice#BATTERY_LEVEL_UNKNOWN}
      */
     public int getBatteryLevel() {
         return mDevice.getBatteryLevel();
@@ -862,12 +864,12 @@ public class CachedBluetoothDevice implements Comparable<CachedBluetoothDevice>
         }
 
         String batteryLevelPercentageString = null;
-        // Android framework should only set mBatteryLevel to valid range [0-100] or
-        // BluetoothDevice.BATTERY_LEVEL_UNKNOWN, any other value should be a framework bug.
-        // Thus assume here that if value is not BluetoothDevice.BATTERY_LEVEL_UNKNOWN, it must
-        // be valid
+        // Android framework should only set mBatteryLevel to valid range [0-100],
+        // BluetoothDevice.BATTERY_LEVEL_BLUETOOTH_OFF, or BluetoothDevice.BATTERY_LEVEL_UNKNOWN,
+        // any other value should be a framework bug. Thus assume here that if value is greater
+        // than BluetoothDevice.BATTERY_LEVEL_UNKNOWN, it must be valid
         final int batteryLevel = getBatteryLevel();
-        if (batteryLevel != BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
+        if (batteryLevel > BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
             // TODO: name com.android.settingslib.bluetooth.Utils something different
             batteryLevelPercentageString =
                     com.android.settingslib.Utils.formatPercentage(batteryLevel);
@@ -970,12 +972,12 @@ public class CachedBluetoothDevice implements Comparable<CachedBluetoothDevice>
         }
 
         String batteryLevelPercentageString = null;
-        // Android framework should only set mBatteryLevel to valid range [0-100] or
-        // BluetoothDevice.BATTERY_LEVEL_UNKNOWN, any other value should be a framework bug.
-        // Thus assume here that if value is not BluetoothDevice.BATTERY_LEVEL_UNKNOWN, it must
-        // be valid
+        // Android framework should only set mBatteryLevel to valid range [0-100],
+        // BluetoothDevice.BATTERY_LEVEL_BLUETOOTH_OFF, or BluetoothDevice.BATTERY_LEVEL_UNKNOWN,
+        // any other value should be a framework bug. Thus assume here that if value is greater
+        // than BluetoothDevice.BATTERY_LEVEL_UNKNOWN, it must be valid
         final int batteryLevel = getBatteryLevel();
-        if (batteryLevel != BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
+        if (batteryLevel > BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
             // TODO: name com.android.settingslib.bluetooth.Utils something different
             batteryLevelPercentageString =
                     com.android.settingslib.Utils.formatPercentage(batteryLevel);
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/BluetoothTile.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/BluetoothTile.java
index 9282a2e3b312..907cc98ab2eb 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/tiles/BluetoothTile.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/BluetoothTile.java
@@ -199,7 +199,7 @@ public class BluetoothTile extends QSTileImpl<BooleanState> {
             CachedBluetoothDevice lastDevice = connectedDevices.get(0);
             final int batteryLevel = lastDevice.getBatteryLevel();
 
-            if (batteryLevel != BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
+            if (batteryLevel > BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
                 return mContext.getString(
                         R.string.quick_settings_bluetooth_secondary_label_battery_level,
                         Utils.formatPercentage(batteryLevel));
@@ -392,7 +392,7 @@ public class BluetoothTile extends QSTileImpl<BooleanState> {
                     if (state == BluetoothProfile.STATE_CONNECTED) {
                         item.iconResId = R.drawable.ic_bluetooth_connected;
                         int batteryLevel = device.getBatteryLevel();
-                        if (batteryLevel != BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
+                        if (batteryLevel > BluetoothDevice.BATTERY_LEVEL_UNKNOWN) {
                             item.icon = new BluetoothBatteryTileIcon(batteryLevel,1 /* iconScale */);
                             item.line2 = mContext.getString(
                                     R.string.quick_settings_connected_battery_level,