参考下拉栏的屏幕亮度调节，添加媒体音量调节。
平台信息：
MSM8909.LA.3.1.2_AOSP
PLATFORM_VERSION=9
BUILD_ID=PKQ1.190903.001
效果图
布局文件与音量图标
Index: frameworks/base/packages/SystemUI/res/layout/quick_settings_media_volume_dialog.xml
===================================================================
--- frameworks/base/packages/SystemUI/res/layout/quick_settings_media_volume_dialog.xml (不存在的)
+++ frameworks/base/packages/SystemUI/res/layout/quick_settings_media_volume_dialog.xml (版本 12429)
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2012 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.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:systemui="http://schemas.android.com/apk/res-auto"
+ android:layout_height="wrap_content"
+ android:layout_width="match_parent"
+ android:layout_gravity="center_vertical"
+ android:paddingLeft="16dp"
+ android:paddingRight="16dp">
+
+ <ImageView
+ android:id="@+id/media_volume_icon"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_gravity="center_vertical"
+ android:layout_marginEnd="8dp"
+ android:src="@drawable/ic_media_stream"
+ android:contentDescription="@null"
+ android:visibility="visible" />
+
+ <SeekBar
+ android:id="@+id/media_volume_seekbar"
+ android:layout_width="0dp"
+ android:layout_height="48dp"
+ android:layout_gravity="center_vertical"
+ android:layout_weight="1" />
+
+</LinearLayout>
Index: frameworks/base/packages/SystemUI/res/drawable/ic_media_stream.xml
===================================================================
--- frameworks/base/packages/SystemUI/res/drawable/ic_media_stream.xml (不存在的)
+++ frameworks/base/packages/SystemUI/res/drawable/ic_media_stream.xml (版本 12429)
@@ -0,0 +1,25 @@
+<!--
+ 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ android:width="24dp"
+ android:height="24dp"
+ android:viewportWidth="24.0"
+ android:viewportHeight="24.0"
+ android:tint="?android:attr/colorControlNormal">
+ <path
+ android:fillColor="#FF000000"
+ android:pathData="M12,3l0.01,10.55c-0.59,-0.34 -1.27,-0.55 -2,-0.55C7.79,13 6,14.79 6,17c0,2.21 1.79,4 4.01,4S14,19.21 14,17V7h4V3H12zM10.01,19c-1.1,0 -2,-0.9 -2,-2c0,-1.1 0.9,-2 2,-2s2,0.9 2,2C12.01,18.1 11.11,19 10.01,19z"/>
+</vector>实现
Index: frameworks/base/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java
===================================================================
--- frameworks/base/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java (版本 12424)
+++ frameworks/base/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java (版本 12429)
@@ -20,10 +20,14 @@import static com.android.systemui.qs.tileimpl.QSTileImpl.getColorForState;import android.annotation.Nullable;
+import android.content.BroadcastReceiver;import android.content.ComponentName;import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;import android.content.res.Configuration;import android.content.res.Resources;
+import android.media.AudioManager;import android.metrics.LogMaker;import android.os.Handler;import android.os.Message;
@@ -32,6 +36,8 @@import android.view.LayoutInflater;import android.view.View;import android.widget.LinearLayout;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;import com.android.internal.logging.MetricsLogger;import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -62,7 +68,7 @@protected final Context mContext;protected final ArrayList<TileRecord> mRecords = new ArrayList<>();
- protected final View mBrightnessView;
+ protected final View mBrightnessView, mMediaVolumeView;private final H mHandler = new H();private final MetricsLogger mMetricsLogger = Dependency.get(MetricsLogger.class);private final QSTileRevealController mQsTileRevealController;
@@ -87,6 +93,9 @@private BrightnessMirrorController mBrightnessMirrorController;private View mDivider;+ private AudioManager mAudioManager;
+ private SeekBar mMediaVolumeSeekBar;
+public QSPanel(Context context) {this(context, null);}
@@ -101,6 +110,12 @@R.layout.quick_settings_brightness_dialog, this, false);addView(mBrightnessView);+ mMediaVolumeView = LayoutInflater.from(mContext).inflate(
+ R.layout.quick_settings_media_volume_dialog, this, false);
+ addView(mMediaVolumeView);
+mTileLayout = (QSTileLayout) LayoutInflater.from(mContext).inflate(R.layout.qs_paged_tile_layout, this, false);mTileLayout.setListening(mListening);
@@ -123,9 +138,42 @@findViewById(R.id.brightness_icon),findViewById(R.id.brightness_slider));+ mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
+ mMediaVolumeSeekBar = findViewById(R.id.media_volume_seekbar);
+ mMediaVolumeSeekBar.setMax(mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC));
+ mMediaVolumeSeekBar.setProgress(mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC));
+ mMediaVolumeSeekBar.setOnSeekBarChangeListener(mSeekListener);
+ IntentFilter filter = new IntentFilter(AudioManager.VOLUME_CHANGED_ACTION);
+ mContext.registerReceiver(mMediaVolumeReceiver, filter);
+updateResources();}+ private final OnSeekBarChangeListener mSeekListener = new OnSeekBarChangeListener() {
+ @Override
+ public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+ mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0);
+ }
+
+ @Override
+ public void onStartTrackingTouch(SeekBar seekBar) { }
+
+ @Override
+ public void onStopTrackingTouch(SeekBar seekBar) { }
+ };
+
+ private final BroadcastReceiver mMediaVolumeReceiver = new BroadcastReceiver() {
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ int currentMediaVolumeValue = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
+ mMediaVolumeSeekBar.setProgress(currentMediaVolumeValue);
+ }
+ };
+protected void addDivider() {mDivider = LayoutInflater.from(mContext).inflate(R.layout.qs_divider, this, false);mDivider.setBackgroundColor(Utils.applyAlpha(mDivider.getAlpha(),
