Android 自定义滑动条
作者:互联网
Java代码如下:
滑动条 //
LayoutInflater myInflater = LayoutInflater.from(this);
seekBar = (SeekBar)myInflater.inflate(R.layout.seekbar, null).findViewById(R.id.seekbar);
seekBar.setBackgroundResource(R.drawable.music_back);//设置滑动条的背景,不知道为什么,在XML里面设置背景一直显示不正常,只拉升显示了一部分
Bitmap bitmapSeekBack = BitmapFactory.decodeResource(getResources(),R.drawable.music_back);
//确定这个控件的大小和位置
left = 151*nDisplayWidth/main.nDefaultWidth;
top = 110*nDisplayHeight/main.nDefaultHeigh;
width = bitmapSeekBack.getWidth();
height = bitmapSeekBack.getHeight();
lpParam = new AbsoluteLayout.LayoutParams(width,height,left,top);
abslayout.addView(seekBar, lpParam);
seekBar.setOnSeekBarChangeListener(new OnMusicSeekBarChange());
class OnMusicSeekBarChange implements OnSeekBarChangeListener
{
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
}
public void onStartTrackingTouch(SeekBar seekBar)
{
}
public void onStopTrackingTouch(SeekBar seekBar)
{
mPlayer.seekTo(mPlayer.getDuration()*seekBar.getProgress()/seekBar.getMax());
}
}
layout目录下的seekbar.xml
<?xml version="1.0" encoding="utf-8"?>
<SeekBar xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/seekbar"
android:progressDrawable="@drawable/seekbar"
android:thumb="@drawable/thumb"
/>
drawable目录下的seekbar.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/progress">
<clip android:drawable="@drawable/music_fore" />
</item>
</layer-list>
drawable目录下的thumb.xml
<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- 按下状态-->
<item
android:state_pressed="true"
android:drawable="@drawable/playerslider_down"
/>
<!-- 松开状态 -->
<item
android:state_pressed="false"
android:drawable="@drawable/playerslider_up"
/>
</selector>
标签:xml,自定义,seekBar,seekbar,public,SeekBar,滑动,Android,drawable 来源: https://blog.51cto.com/u_15298588/3034406