Chintan Rathod’s answer was great solution but there are something wrong when He draws the rectangle. I just edit some lines of code to make it works correctly with user touch event. Now, you can add this view to your layout then touch to draw. import java.util.ArrayList; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; … Read more
As Romain Guy suggests: listView.getBackground().setDither(true); solves my problem If this is not enough especially for AMOLED and/or hdpi devices try this: @Override public void onAttachedToWindow() { super.onAttachedToWindow(); Window window = getWindow(); window.setFormat(PixelFormat.RGBA_8888); }
A ‘simple sample redesign’ per my comment follows. unit Unit4; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs; const NUM_TRIANGLES = 10; COLORS: array[0..12] of integer = (clRed, clGreen, clBlue, clYellow, clFuchsia, clLime, clGray, clSilver, clBlack, clMaroon, clNavy, clSkyBlue, clMoneyGreen); type TTriangle = record X, Y: integer; // bottom-left corner Base, Height: … Read more
motorcycle.jpg motorcycle-03.png ImageOutline.java This code requires some patience (when running). import java.awt.*; import java.awt.image.BufferedImage; import java.awt.geom.Area; import javax.imageio.ImageIO; import java.io.File; import java.util.Date; import javax.swing.*; /* Motorcycle image courtesy of ShutterStock http://www.shutterstock.com/pic-13585165/stock-vector-travel-motorcycle-silhouette.html */ class ImageOutline { public static Area getOutline(BufferedImage image, Color color, boolean include, int tolerance) { Area area = new Area(); for (int x=0; … Read more
You could modify it simply like this GradientDrawable bgShape = (GradientDrawable)btn.getBackground(); bgShape.setColor(Color.BLACK);
Note: Answer has been updated to cover the scenario where background is an instance of ColorDrawable. Thanks Tyler Pfaff, for pointing this out. The drawable is an oval and is the background of an ImageView Get the Drawable from imageView using getBackground(): Drawable background = imageView.getBackground(); Check against usual suspects: if (background instanceof ShapeDrawable) { … Read more