商丘关键词优化推广_搜索引擎优化营销_seo引擎优化怎么做_镇江seo

• 效果图
  

• xml布局 @mipmap/seekbar图片随意一张图都可以，这里我的图就不贴出来了

				 <SeekBarandroid:id="@+id/seekBar"android:layout_marginLeft="8dp"android:layout_width="377dp"android:layout_height="8dp"android:layout_gravity="center"android:layout_centerHorizontal="true"android:progressDrawable="@drawable/seek_bar_voice_bg"android:thumb="@mipmap/seekbar" />

• seek_bar_voice_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-listxmlns:android="http://schemas.android.com/apk/res/android"><item android:id="@android:id/background"><shape><corners android:radius="5dip" /><solid android:color="#D4E3F4" /></shape></item><item android:id="@android:id/secondaryProgress"><clip><shape><solid android:color="#D4E3F4" /></shape></clip></item><item android:id="@android:id/progress"><clip><shape><corners android:radius="5dip" /><solid android:color="#0A68F5" /></shape></clip></item>
</layer-list>

• 逻辑实现

 SeekBar seekBar=findViewById(R.id.seekBar);AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);//获取系统最大音量int maxVolume = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);seekBar.setMax(maxVolume);//获取当前音量int currentVolume = am.getStreamVolume(AudioManager.STREAM_MUSIC);seekBar.setProgress(currentVolume);seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {@Overridepublic void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {//滑动时候调用if(fromUser){//设置系统音量am.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0);int currentVolume = am.getStreamVolume(AudioManager.STREAM_MUSIC);seekBar.setProgress(currentVolume);}}@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {//摁下的时候调用}@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {//松开的时候调用}});