案例：SeekBar的滑块上面带有另外的视图可以跟着一起滚动

<LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical" >
                <TextView
                    android:id="@+id/sb_text"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_below="@+id/sb01"
                    android:background="@drawable/price"
                    android:gravity="center_horizontal"
                    android:text="0"
                    android:textColor="#000000"
                    android:textSize="12sp" />
                <SeekBar
                    android:id="@+id/sb"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_below="@+id/iv01"
                    android:layout_centerInParent="true"
                    android:layout_gravity="center_vertical"
                    android:max="100"
                    android:maxHeight="20px"
                    android:minHeight="20px"
                    android:paddingLeft="20dp"
                    android:paddingRight="20dp"
                    android:progress="0"
                    android:progressDrawable="@drawable/seekbar_define_style"
                    android:thumb="@drawable/sliding_button" />
            </LinearLayout>

		SeekBar sb=(SeekBar) popupWindow.findViewById(R.id.sb);
		final TextView sb_text=(TextView) popupWindow.findViewById(R.id.sb_text);
		
		sb.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
			
			@Override
			public void onStopTrackingTouch(SeekBar arg0) {
			}
			
			@Override
			public void onStartTrackingTouch(SeekBar arg0) {
			}
			
			@Override
			public void onProgressChanged(SeekBar seekbar1, int arg1, boolean arg2) {
				int position=seekbar1.getProgress();
				//seekbar的宽度，一定记得要减去内边距！否则设置textView的位移时会不准
				float seekbarWidth=seekbar1.getWidth()-DensityUtil.dp2px(B1_CarDetailActivity.this, 40);
				float translateX=(position * seekbarWidth)/100;
				sb_text.setText(position+"");
				sb_text.setTranslationX(translateX);
			}
		});

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
        <item
            android:id="@android:id/background"
            android:drawable="@drawable/sliding_region_down"/>
        <item
            android:id="@android:id/progress"
            android:drawable="@drawable/sliding_region"/>
        <!--<item-->
            <!--android:id="@android:id/secondaryProgress"-->
            <!--android:drawable="#FF7E00"/>-->
</layer-list>