Android自定义SeekBar滑动显示数字

<?xml version="1.0" encoding="utf-8"?><merge xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.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);  } }