내 Recycler보기에서 호출기에 점이있는 방법은 무엇입니까?

Question

페이저에서 Recycler보기에 점을 지정해야합니다. 이미 직사각형 호출기를 얻었지만 서클이 있어야합니다. 필요한 것을 얻기 위해 소스를 수정하려면 어떻게해야합니까? 몇 가지 웹 솔루션을 시도했지만 어느 누구도 저에게 적합하지 않습니다. ViewPager를 사용하여이 작업을 수행 할 수 있음을 알고 있지만이 방법으로 RecyclerView를 사용해야합니다. 이 작동 희망

public class LinePagerIndicatorDecoration extends RecyclerView.ItemDecoration { 

private int colorActive = 0xFFC8C8C8; 
private int colorInactive = 0xFFE0E0E0; 

    private static final float DP = Resources.getSystem().getDisplayMetrics().density; 

    /** 
    * Height of the space the indicator takes up at the bottom of the view. 
    */ 
    private final int mIndicatorHeight = (int) (DP * 16); 

    /** 
    * Indicator stroke width. 
    */ 
    private final float mIndicatorStrokeWidth = DP * 2; 

    /** 
    * Indicator width. 
    */ 
    private final float mIndicatorItemLength = DP * 16; 
    /** 
    * Padding between indicators. 
    */ 
    private final float mIndicatorItemPadding = DP * 8; 

    /** 
    * Some more natural animation interpolation 
    */ 
    private final Interpolator mInterpolator = new AccelerateDecelerateInterpolator(); 

    private final Paint mPaint = new Paint(); 

    public LinePagerIndicatorDecoration() { 
     mPaint.setStrokeCap(Paint.Cap.ROUND); 
     mPaint.setStrokeWidth(mIndicatorStrokeWidth); 
     mPaint.setStyle(Paint.Style.STROKE); 
     mPaint.setAntiAlias(true); 
    } 

    @Override 
    public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) { 
     super.onDrawOver(c, parent, state); 

     int itemCount = parent.getAdapter().getItemCount(); 

     // center horizontally, calculate width and subtract half from center 
     float totalLength = mIndicatorItemLength * itemCount; 
     float paddingBetweenItems = Math.max(0, itemCount - 1) * mIndicatorItemPadding; 
     float indicatorTotalWidth = totalLength + paddingBetweenItems; 
     float indicatorStartX = (parent.getWidth() - indicatorTotalWidth)/2F; 

     // center vertically in the allotted space 
     float indicatorPosY = parent.getHeight() - mIndicatorHeight/2F; 

     drawInactiveIndicators(c, indicatorStartX, indicatorPosY, itemCount); 


     // find active page (which should be highlighted) 
     LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager(); 
     int activePosition = layoutManager.findFirstVisibleItemPosition(); 
     if (activePosition == RecyclerView.NO_POSITION) { 
      return; 
     } 

     // find offset of active page (if the user is scrolling) 
     final View activeChild = layoutManager.findViewByPosition(activePosition); 
     int left = activeChild.getLeft(); 
     int width = activeChild.getWidth(); 

     // on swipe the active item will be positioned from [-width, 0] 
     // interpolate offset for smooth animation 
     float progress = mInterpolator.getInterpolation(left * -1/(float) width); 

     drawHighlights(c, indicatorStartX, indicatorPosY, activePosition, progress, itemCount); 
    } 

    private void drawInactiveIndicators(Canvas c, float indicatorStartX, float indicatorPosY, int itemCount) { 
     mPaint.setColor(colorInactive); 

     // width of item indicator including padding 
     final float itemWidth = mIndicatorItemLength + mIndicatorItemPadding; 

     float start = indicatorStartX; 
     for (int i = 0; i < itemCount; i++) { 
      // draw the line for every item 
      c.drawLine(start, indicatorPosY, start + mIndicatorItemLength, indicatorPosY, mPaint); 
      start += itemWidth; 
     } 
    } 

    private void drawHighlights(Canvas c, float indicatorStartX, float indicatorPosY, 
           int highlightPosition, float progress, int itemCount) { 
     mPaint.setColor(colorActive); 

     // width of item indicator including padding 
     final float itemWidth = mIndicatorItemLength + mIndicatorItemPadding; 

     if (progress == 0F) { 
      // no swipe, draw a normal indicator 
      float highlightStart = indicatorStartX + itemWidth * highlightPosition; 
      c.drawLine(highlightStart, indicatorPosY, 
        highlightStart + mIndicatorItemLength, indicatorPosY, mPaint); 
     } else { 
      float highlightStart = indicatorStartX + itemWidth * highlightPosition; 
      // calculate partial highlight 
      float partialLength = mIndicatorItemLength * progress; 

      // draw the cut off highlight 
      c.drawLine(highlightStart + partialLength, indicatorPosY, 
        highlightStart + mIndicatorItemLength, indicatorPosY, mPaint); 

      // draw the highlight overlapping to the next item as well 
      if (highlightPosition < itemCount - 1) { 
       highlightStart += itemWidth; 
       c.drawLine(highlightStart, indicatorPosY, 
         highlightStart + partialLength, indicatorPosY, mPaint); 
      } 
     } 
    } 

    @Override 
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) { 
     super.getItemOffsets(outRect, view, parent, state); 
     outRect.bottom = mIndicatorHeight; 
    } 
} 

Answer 1

public class temp extends RecyclerView.ItemDecoration { 

private int colorActive = 0xFFC8C8C8; 
private int colorInactive = 0xFFE0E0E0; 

private static final float DP = Resources.getSystem().getDisplayMetrics().density; 

/** 
* Height of the space the indicator takes up at the bottom of the view. 
*/ 
private final int mIndicatorHeight = (int) (DP * 16); 

/** 
* Indicator stroke width. 
*/ 
private final float mIndicatorStrokeWidth = DP * 2; 

/** 
* Indicator width. 
*/ 
private final float mIndicatorItemLength = DP * 16; 
/** 
* Padding between indicators. 
*/ 
private final float mIndicatorItemPadding = DP * 8; 

/** 
* Some more natural animation interpolation 
*/ 
private final Interpolator mInterpolator = new AccelerateDecelerateInterpolator(); 

private final Paint mPaint = new Paint(); 

public LinePagerIndicatorDecoration() { 
    mPaint.setStrokeCap(Paint.Cap.ROUND); 
    mPaint.setStrokeWidth(mIndicatorStrokeWidth); 
    mPaint.setStyle(Paint.Style.STROKE); 
    mPaint.setAntiAlias(true); 
} 

@Override 
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) { 
    super.onDrawOver(c, parent, state); 

    int itemCount = parent.getAdapter().getItemCount(); 

    // center horizontally, calculate width and subtract half from center 
    float totalLength = mIndicatorItemLength * itemCount; 
    float paddingBetweenItems = Math.max(0, itemCount - 1) * mIndicatorItemPadding; 
    float indicatorTotalWidth = totalLength + paddingBetweenItems; 
    float indicatorStartX = (parent.getWidth() - indicatorTotalWidth)/2F; 

    // center vertically in the allotted space 
    float indicatorPosY = parent.getHeight() - mIndicatorHeight/2F; 

    drawInactiveIndicators(c, indicatorStartX, indicatorPosY, itemCount); 


    // find active page (which should be highlighted) 
    LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager(); 
    int activePosition = layoutManager.findFirstVisibleItemPosition(); 
    if (activePosition == RecyclerView.NO_POSITION) { 
     return; 
    } 

    // find offset of active page (if the user is scrolling) 
    final View activeChild = layoutManager.findViewByPosition(activePosition); 
    int left = activeChild.getLeft(); 
    int width = activeChild.getWidth(); 

    // on swipe the active item will be positioned from [-width, 0] 
    // interpolate offset for smooth animation 
    float progress = mInterpolator.getInterpolation(left * -1/(float) width); 

    drawHighlights(c, indicatorStartX, indicatorPosY, activePosition, progress, itemCount); 
} 

private void drawInactiveIndicators(Canvas c, float indicatorStartX, float indicatorPosY, int itemCount) { 
    mPaint.setColor(colorInactive); 

    // width of item indicator including padding 
    final float itemWidth = mIndicatorItemLength + mIndicatorItemPadding; 

    float start = indicatorStartX; 
    for (int i = 0; i < itemCount; i++) { 
     // draw the line for every item 
     // c.drawLine(start, indicatorPosY, start + mIndicatorItemLength, indicatorPosY, mPaint); 
     c.drawCircle(start, indicatorPosY, (mIndicatorItemLength)/2, mPaint); 
     start += itemWidth; 
    } 
} 

private void drawHighlights(Canvas c, float indicatorStartX, float indicatorPosY, 
          int highlightPosition, float progress, int itemCount) { 
    mPaint.setColor(colorActive); 

    // width of item indicator including padding 
    final float itemWidth = mIndicatorItemLength + mIndicatorItemPadding; 

    if (progress == 0F) { 
     // no swipe, draw a normal indicator 
     float highlightStart = indicatorStartX + itemWidth * highlightPosition; 
     // c.drawLine(highlightStart, indicatorPosY,highlightStart + mIndicatorItemLength, indicatorPosY, mPaint); 
     c.drawCircle(highlightStart, indicatorPosY, (mIndicatorItemLength)/2, mPaint); 
    } else { 
     float highlightStart = indicatorStartX + itemWidth * highlightPosition; 
     // calculate partial highlight 
     float partialLength = mIndicatorItemLength * progress; 

     // draw the cut off highlight 
     // c.drawLine(highlightStart + partialLength, indicatorPosY,highlightStart + mIndicatorItemLength, indicatorPosY, mPaint); 
     c.drawCircle(highlightStart + partialLength, indicatorPosY, (mIndicatorItemLength)/2, mPaint); 

     // draw the highlight overlapping to the next item as well 
     if (highlightPosition < itemCount - 1) { 
      highlightStart += itemWidth; 
      // c.drawLine(highlightStart, indicatorPosY,highlightStart + partialLength, indicatorPosY, mPaint); 
      c.drawCircle(highlightStart, indicatorPosY, (mIndicatorItemLength)/2, mPaint); 

     } 
    } 
} 

@Override 
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) { 
    super.getItemOffsets(outRect, view, parent, state); 
    outRect.bottom = mIndicatorHeight; 
} 

}

그것을 시도 줄 : 이 내 자바 사각형 호출기에 대한 코드입니다.