Android Cover Flow带有图像阴影效果

Question

我想实现封面流程如下

我尝试过Carousel，但它不是一回事。有些谷歌搜索无法找到甚至在给定示例中实现的封面流程附近的内容。

Answer 1

绝对看看这个FancyCoverFlow。

Play商店中还有一个演示应用程序，可以显示您想要的反射要求。

Answer 2

你尝试过这个：

blog post

public Bitmap getRefelection(Bitmap image) {
  // The gap we want between the reflection and the original image
  final int reflectionGap = 0;

  // Get you bit map from drawable folder
  Bitmap originalImage = image;

  int width = originalImage.getWidth();
  int height = originalImage.getHeight();

  // This will not scale but will flip on the Y axis
  Matrix matrix = new Matrix();
  matrix.preScale(1, -1);

  // Create a Bitmap with the flip matix applied to it.
  // We only want the bottom half of the image
  /*if(bitmapWithReflection!=null && !bitmapWithReflection.isRecycled()){
   bitmapWithReflection.recycle();
   bitmapWithReflection=null;
  }*/
  Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0,
    height / 2, width, height / 2, matrix, false);

  // Create a new bitmap with same width but taller to fit reflection
  Bitmap bitmapWithReflection = Bitmap.createBitmap(width,(height + height / 2), Config.ARGB_8888);
  // Create a new Canvas with the bitmap that's big enough for
  // the image plus gap plus reflection
  Canvas canvas = new Canvas(bitmapWithReflection);
  // Draw in the original image
  canvas.drawBitmap(originalImage, 0, 0, null);
  //Draw the reflection Image
  canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null);

  // Create a shader that is a linear gradient that covers the reflection
  Paint paint = new Paint();
  LinearGradient shader = new LinearGradient(0,
    originalImage.getHeight(), 0, bitmapWithReflection.getHeight()
      + reflectionGap, 0x40ffffff, 0x00ffffff, TileMode.CLAMP);
  // Set the paint to use this shader (linear gradient)
  paint.setShader(shader);
  // Set the Transfer mode to be porter duff and destination in
  paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
  // Draw a rectangle using the paint with our linear gradient
  canvas.drawRect(0, height, width, bitmapWithReflection.getHeight()
    + reflectionGap, paint);
  if(originalImage!=null && originalImage.isRecycled()){
   originalImage.recycle();
   originalImage=null;
  }
  if(reflectionImage!=null && reflectionImage.isRecycled()){
   reflectionImage.recycle();
   reflectionImage=null;
  }
  return bitmapWithReflection;
 }

Answer 3

您是否经历过与您想要的Carousel有点不同的Android Coverflow。

Answer 4

我制作了不依赖于图库的封面流程小工具。 你可以在这里找到它。我稍后会添加一些样本。

http://applm.github.io/ma-components/