Android custom Seekbar dynamically change hardware volume size and volume key synchronization

1,:

2, Code:

Mainactivity.java

 PackageCom.hero.zhaoq.seekbarchangeddemo;ImportAndroid.content.BroadcastReceiver;ImportAndroid.content.Context;ImportAndroid.content.Intent;ImportAndroid.content.IntentFilter;ImportAndroid.database.ContentObserver;ImportAndroid.media.AudioManager;ImportAndroid.os.Handler;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.os.Bundle;ImportAndroid.util.Log;ImportAndroid.widget.SeekBar;/** * Android implements Seekbar update volume and synchronizes with hardware */ Public  class mainactivity extends appcompatactivity {    PrivateSeekBar Seekbar_video;PrivateContentobserver Mvoiceobserver;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.activity_main); Audiomanager Audiomanager = (audiomanager) getsystemservice (Context.audio_service);//Get Media system Servicesseekbar_video= (Seekbar) Findviewbyid (R.id.seekbar_video);//Registration IDSeekbar_video.setmax ( the);//Set Maximum volumeSeekbar_video.setprogress (Audiomanager.getstreamvolume (audiomanager.stream_music));//Current Media volumeMyregisterreceiver ();//Register for simultaneous updates of the broadcastLOG.I ("Lyj_ring","Mvoiceseekbar max voluem ="+audiomanager.getstreammaxvolume (Audiomanager.stream_system)); Seekbar_video.setonseekbarchangelistener (NewSeekbar.onseekbarchangelistener () { Public void Onstoptrackingtouch(SeekBar arg0) {            } Public void Onstarttrackingtouch(SeekBar arg0) {            } Public void onprogresschanged(SeekBar arg0,intArg1,BooleanARG2) {Audiomanager Audiomanager = (audiomanager) getsystemservice (Context.audio_service); LOG.V ("Lyj_ring","Mvoiceseekbar max progress ="+ARG1);//System volume and Media volume update simultaneouslyAudiomanager.setstreamvolume (Audiomanager.stream_system, Arg1,0); Audiomanager.setstreamvolume (3, Arg1,0);//3 for Audiomanager.stream_music}        }); Mvoiceobserver =NewContentobserver (NewHandler ()) {@Override             Public void OnChange(BooleanSelfchange) {Super. OnChange (Selfchange);                Audiomanager Audiomanager = (audiomanager) getsystemservice (Context.audio_service); Seekbar_video.setprogress (Audiomanager.getstreamvolume (Audiomanager.stream_system));//or you can use the media volume to listen for changes, the effect is the same.                 //mvoiceseekbar.setprogress (Audiomanager.getstreamvolume (Audiomanager.stream_music));}        }; }Private void Myregisterreceiver() {Myvolumereceiver mvolumereceiver =NewMyvolumereceiver (); Intentfilter filter =NewIntentfilter (); Filter.addaction ("Android.media.VOLUME_CHANGED_ACTION") ;    Registerreceiver (mvolumereceiver, filter); }/** * Interface display when handling volume changes * @author Long * *    Private  class myvolumereceiver extends broadcastreceiver {        @Override         Public void OnReceive(context context, Intent Intent) {//Change the position of the Seekbar if the volume has changed            if(Intent.getaction (). Equals ("Android.media.VOLUME_CHANGED_ACTION") {Audiomanager Maudiomanager = (audiomanager) context.getsystemservice (Context.audio_service);intCurrvolume = Maudiomanager.getstreamvolume (Audiomanager.stream_music);//Current Media volumeSeekbar_video.setprogress (Currvolume); }        }    }}

Main_activity.xml:

<?xml version= "1.0" encoding= "Utf-8"?><linearlayout  xmlns: Android  = "http://schemas.android.com/apk/res/android"  android:id  =" @+id/ringtone_seekbar_parent " android:layout_width  =" match_parent " android:layout_height  =" 160px " android:layout_margintop  = "0dip"  android:layout_weight  = "1"   android:gravity  = "center_vertical"  android:o Rientation  =;     <seekbar  android:id  = "@+id/seekbar_video"  android:layout_width< /span>= "match_parent"  android:layout_height  = "25DP"  android:max  =         "0"  android:progress  = "0"  android:progressdrawable  =" @drawable/seekbar_progress_layer_ List " android:thumb  =" @mipmap/play_seekbar_ Icon " android:layout_weight  =" all "/ </linearlayout>

Seekbar_progress_layer_list.xml

<?xml version= "1.0" encoding= "Utf-8"?><layer-listxmlns:android="Http://schemas.android.com/apk/res/android">         <!--unchecked State --    <item android:id="@android: Id/background"android:drawable= "@mipmap/volumn_bg" />            <!--&lt;! &ndash; checked status &ndash;&gt;-->    <item android:id="@android: id/progress">        < scale android:drawable="@mipmap/volumn_primary" android:scalewidth= "100%" />    </Item></layer-list>

Not you, not just you don't know ...
The entire code implementation is simple. The author does not repeat.

Note: Open the demo and open the song. Swipe Seekbar to change the volume size.

Maybe you need this more:

Source:
Https://github.com/229457269/SeekBarChangedVoiceDemo

Reference: http://blog.csdn.net/lyjit/article/details/51538951

Android Custom Seekbar dynamically changes the hardware volume size and volume keys synchronization