Android自定义SeekBar滑动显示数字

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://scheR_723_11845@as.android.com/apk/res/android"
 xmlns:tools="http://scheR_723_11845@as.android.com/tools">

 <RelativeLayout
  android:id="@+id/wrapper_seekbar_inDicator"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">

  <ImageView
   android:id="@+id/img_seekbar_inDicator"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_alignParentTop="true" />

  <TextView
   android:id="@+id/txt_seekbar_inDicated_progress"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:gravity="center"
   android:textColor="#333333"
   android:textSize="@dimen/space_12"
   tools:text="100" />
 </RelativeLayout>

 <RelativeLayout
  android:id="@+id/wrapper_seekbar"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">

  <SeekBar
   android:id="@+id/seekbar"
   style="@style/Widget.SeekBar.Normal"
   android:layout_width="match_parent"
   android:layout_height="wrap_content" />
 </RelativeLayout>

</merge>

private void init(Context context,AttributeSet attrs,int defStylE) {
  View view = LayoutInflater.from(context).inflate(
    R.layout.view_seekbar_inDicated,this);
  bindViews(view);

  if (attrs != null)
   setAttributes(context,attrs,defStylE);
  mSeekBar.setOnSeekBarchangelistener(this);
  mTextViewProgress.setText(String.valueOf(mSeekBar.getProgress()));

  getViewTreeObserver().addOnGlobalLayoutListener(
    new ViewTreeObserver.onGlobalLayoutListener() {
     @TargetApi(Build.VERSION_CODEs.jeLLY_BEAN)
     @Override
     public void onGlobalLayout() {
      mMeasuredWidth = mSeekBar.getWidth()
        - mSeekBar.getPaddingLeft()
        - mSeekBar.getPaddingRight();
      mSeekBar.setPadding(
        mSeekBar.getPaddingLeft(),mSeekBar.getPaddingTop()
          + mWrapperInDicator.getHeight(),mSeekBar.getPaddingRight(),mSeekBar.getPaddingBottom());
      seTinDicator();
      getViewTreeObserver()
        .removeOnGlobalLayoutListener(this);
     }
    });
  // mWrapperInDicator.setVisibility(View.GONE);
 }

 @Override
 public void onProgressChanged(SeekBar seekBar,int progress,Boolean fromUser) {
  seTinDicator();
  if (mOnSeekBarchangelistener != null)
   mOnSeekBarchangelistener.onProgressChanged(seekBar,progress,fromUser);
 }

 @Override
 public void onStartTrackingTouch(SeekBar seekBar) {
  if (mOnSeekBarchangelistener != null) {
   mOnSeekBarchangelistener.onStartTrackingTouch(seekBar);
   mWrapperInDicator.setVisibility(View.VISIBLE);
  }
 }

 @Override
 public void onStopTrackingTouch(SeekBar seekBar) {
  if (mOnSeekBarchangelistener != null) {
   mOnSeekBarchangelistener.onStopTrackingTouch(seekBar);
   mWrapperInDicator.setVisibility(View.GONE);
  }
 }