This simple Activity creates a reflection of the provided image.
package com.coderzheaven.imagereflection;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.LinearGradient;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PorterDuff.Mode;import android.graphics.PorterDuffXfermode;import android.graphics.Shader.TileMode;import android.os.Bundle;import android.view.Menu;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.LinearLayout.LayoutParams;public class ImageReflection extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // setContentView(R.layout.activity_image_reflection); Bitmap originalImage = BitmapFactory.decodeResource(getResources(), R.drawable.coderzheaven_logo); // Create an Image view and add our bitmap with reflection to it ImageView imageView = new ImageView(this); imageView.setImageBitmap(getRefelection(originalImage)); // Add the image to a linear layout and display it LinearLayout linLayout = new LinearLayout(this); linLayout.addView(imageView, new LinearLayout.LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); linLayout.setBackgroundColor(Color.BLACK); // set LinearLayout as ContentView setContentView(linLayout); } public Bitmap getRefelection(Bitmap image) { // The gap we want between the reflection and the original image final int reflectionGap = 4; // 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 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, 0x70ffffff, 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); return bitmapWithReflection; }} |
Download the complete source code for above example from here.