Add developer menu to select max number of connected audio devices

The new developer option modifies the system property "persist.bluetooth.maxconnectedaudiodevices"; it allows testing multiple connected devices for A2DP, AVRCP, HFP. Bug: 71603731 Test: Robolectric test Change-Id: Ie7887065f98193f4f34e0ff4a29959694e417124
2018-01-04 16:38:15 -08:00
parent 27e7280b21
commit b2730b7b10
6 changed files with 274 additions and 0 deletions
--- a/src/com/android/settings/development/BluetoothMaxConnectedAudioDevicesPreferenceController.java
+++ b/src/com/android/settings/development/BluetoothMaxConnectedAudioDevicesPreferenceController.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2018 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.development;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+public class BluetoothMaxConnectedAudioDevicesPreferenceController extends
+        DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
+        PreferenceControllerMixin {
+
+    private static final String BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_KEY =
+            "bluetooth_max_connected_audio_devices";
+
+    @VisibleForTesting
+    static final String BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY =
+            "persist.bluetooth.maxconnectedaudiodevices";
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+    private ListPreference mPreference;
+
+    public BluetoothMaxConnectedAudioDevicesPreferenceController(Context context) {
+        super(context);
+
+        mListValues = context.getResources()
+                .getStringArray(R.array.bluetooth_max_connected_audio_devices_values);
+        mListSummaries = context.getResources()
+                .getStringArray(R.array.bluetooth_max_connected_audio_devices);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = (ListPreference) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        SystemProperties.set(BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY, newValue.toString());
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final String currentValue = SystemProperties.get(
+                BLUETOOTH_MAX_CONNECTED_AUDIO_DEVICES_PROPERTY);
+        int index = 0; // Defaults to 1 device
+        for (int i = 0; i < mListValues.length; i++) {
+            if (TextUtils.equals(currentValue, mListValues[i])) {
+                index = i;
+                break;
+            }
+        }
+        mPreference.setValue(mListValues[index]);
+        mPreference.setSummary(mListSummaries[index]);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        mPreference.setEnabled(true);
+        mPreference.setValue(mListValues[0]);
+        mPreference.setSummary(mListSummaries[0]);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        mPreference.setEnabled(false);
+        mPreference.setValue(mListValues[0]);
+        mPreference.setSummary(mListSummaries[0]);
+    }
+}
+