<declare-styleable name="MarqueeViewStyle">  
<attr name="textSize" format="dimension" />  
<attr name="textColor" format="color" />  
<attr name="paddingLeft" format="dimension" />  
<attr name="paddingTop" format="dimension" />  
<attr name="paddingBottom" format="dimension" />  
<attr name="paddingTopBottom" format="dimension"/>  
<attr name="startDelayTime" format="integer"/> 动画开始延迟时间
<attr name="reRepeatDelayTime" format="integer"/> 动画重复延迟时间 
<attr name="itemAnimationTime" format="integer"/> 单个动画的执行时间
</declare-styleable>

private void init(Context context, AttributeSet attrs) {  
 TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MarqueeViewStyle);  
 mTextColor = typedArray.getColor(R.styleable.MarqueeViewStyle_textColor, Color.BLACK);  
 mTextSize = typedArray.getDimensionPixelSize(R.styleable.MarqueeViewStyle_textSize, 45);  

 mPaddingLeft = typedArray.getDimensionPixelSize(R.styleable.MarqueeViewStyle_paddingLeft, 15);  
 mPaddingTop = mPaddingBottom = typedArray.getDimensionPixelSize(R.styleable.MarqueeViewStyle_paddingTopBottom, 25);  
 mPaddingTop = typedArray.getDimensionPixelSize(R.styleable.MarqueeViewStyle_paddingTop, mPaddingTop);  
 mPaddingBottom = typedArray.getDimensionPixelSize(R.styleable.MarqueeViewStyle_paddingBottom, mPaddingBottom);  

 itemAnimationTime = typedArray.getInteger(R.styleable.MarqueeViewStyle_itemAnimationTime, 1000);  
 reRepeatDelayTime = typedArray.getInteger(R.styleable.MarqueeViewStyle_reRepeatDelayTime, 1000);  
 startDelayTime = typedArray.getInteger(R.styleable.MarqueeViewStyle_startDelayTime, 500);  
 typedArray.recycle();  

  mPaint = new Paint();  
  mPaint.setAntiAlias(true);  
  mPaint.setTextSize(mTextSize);  
  mPaint.setColor(mTextColor);  
  mPaint.setTextAlign(Paint.Align.LEFT);}

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {  
  if(mTextArray == null || mTextArray.length == 0) {   
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);  
  } else {    
    int width = MeasureSpec.getSize(widthMeasureSpec);  
    int height = MeasureSpec.getSize(heightMeasureSpec);   
    ViewGroup.LayoutParams lp = getLayoutParams();    
    setMeasuredDimension(getViewWidth(lp, width), getViewHeight(lp, height));  
  }
}

public void setTextArray(String[] textArray) {  
  if(textArray == null || textArray.length <= 1) return;  
  mTextArray = textArray;  
  initTextRect();  
  setTextCurrentOrNextStatus(0, 1, true);  
  startAnimation();}

private void startAnimation() {  
 va = ValueAnimator.ofFloat(0, 1);  
 va.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {    
 @Override    
 public void onAnimationUpdate(ValueAnimator animation) {  
   mProgress = (float) animation.getAnimatedValue();      
.   int moveOffset = (int) (mTextMoveOffset * mProgress); 
   mCurrentTextMoveMarginTop = mCurrentTextInitMarginTop - moveOffset;      
   mNextTextMoveMarginTop = mNextTextInitMarginTop - moveOffset;      
   postInvalidate();    
 }  
 });  

 va.addListener(new AnimatorListenerAdapter() {    
   @Override    
   public void onAnimationRepeat(Animator animation) {   
    va.pause();        
    setTextCurrentOrNextStatus(mNextTextPosition, mNextTextPosition + 1, false);      
    handler.postDelayed(new Runnable() {        
     @Override        
     public void run() {          
      va.resume();        
     } 
    }, reRepeatDelayTime);    
   }  
 });  
 va.setRepeatCount(-1);  
 va.setDuration(itemAnimationTime);  
 va.setStartDelay(startDelayTime);  
 va.start();
}

protected void onDraw(Canvas canvas) {  
 if(mTextArray == null || mTextArray.length == 0) {   
  super.onDraw(canvas);  
 } else {    
  canvas.drawText(mCurrentText, mPaddingLeft, mCurrentTextMoveMarginTop, mPaint);  
  canvas.drawText(mNextText, mPaddingLeft, mNextTextMoveMarginTop, mPaint);  
 }
}