Android 8.1 设置--声音中增加通话音量

Android 8.1 设置--声音中增加通话音量

近来收到项目需求，想要在设置--声音中增加一项通话音量调节，具体修改参照如下：

/vendor/mediatek/proprietary/packages/apps/MtkSettings/res/values/strings.xml

+    
+    Call volume

/vendor/mediatek/proprietary/packages/apps/MtkSettings/res/values-zh-rCN/strings.xml

+    "通话音量"

/vendor/mediatek/proprietary/packages/apps/MtkSettings/res/drawable/ic_volume_voice.xml

/vendor/mediatek/proprietary/packages/apps/MtkSettings/res/xml/sound_settings.xml

+        
+        

/vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/notification/CallVolumePreferenceController.java

/*
 * Copyright (C) 2016 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.notification;

import android.content.Context;
import android.media.AudioManager;

import com.android.internal.annotations.VisibleForTesting;
import com.android.settings.notification.VolumeSeekBarPreference.Callback;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settings.R;

public class CallVolumePreferenceController extends
    VolumeSeekBarPreferenceController {

    private static final String KEY_CALL_VOLUME = "call_volume";
    private AudioHelper mHelper;

    public CallVolumePreferenceController(Context context, Callback callback,
        Lifecycle lifecycle) {
        this(context, callback, lifecycle, new AudioHelper(context));
    }

    @VisibleForTesting
    CallVolumePreferenceController(Context context, Callback callback, Lifecycle lifecycle,
        AudioHelper helper) {
        super(context, callback, lifecycle);
        mHelper = helper;
    }

    @Override
    public boolean isAvailable() {
        return !mHelper.isSingleVolume();
    }

    @Override
    public String getPreferenceKey() {
        return KEY_CALL_VOLUME;
    }

    @Override
    public int getAudioStream() {
        return AudioManager.STREAM_VOICE_CALL;
    }

    @Override
    public int getMuteIcon() {
        return R.drawable.ic_volume_voice;
    }

}

/vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/notification/SoundSettings.java

    private static List buildPreferenceControllers(Context context,
            SoundSettings fragment, VolumeSeekBarPreference.Callback callback,
            Lifecycle lifecycle) {
        final List controllers = new ArrayList<>();
        controllers.add(new ZenModePreferenceController(context));
        controllers.add(new EmergencyBroadcastPreferenceController(
                context, KEY_CELL_BROADCAST_SETTINGS));
        controllers.add(new VibrateWhenRingPreferenceController(context));

        // === Volumes ===
        controllers.add(new AlarmVolumePreferenceController(context, callback, lifecycle));
+        controllers.add(new CallVolumePreferenceController(context, callback, lifecycle));

重新编译验证，修改生效，设置--声音中已增加通话音量调节项