Java tutorial
//package com.java2s; import java.io.IOException; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; import android.net.Uri; import android.provider.MediaStore; import android.util.Log; public class Main { /** * This method gets the contact image from the phone book. * * @param context * @param imageUri * @return Contact's image or null */ public static Bitmap getByteContactImage(Context context, String imageUri, int pixel) { if (imageUri == null) { return null; } if (imageUri != null) { try { Uri image_Uri = Uri.parse(imageUri); Bitmap bitmap = MediaStore.Images.Media.getBitmap(context.getContentResolver(), image_Uri); bitmap = Bitmap.createScaledBitmap(bitmap, pixel, pixel, false); return getRoundedCornerBitmap(bitmap, pixel); } catch (IOException e) { Log.e("EPollUtil", e.getLocalizedMessage()); } } return null; } /** * This method is used to create bitmap with rounded corners. * * @param bitmap * which is to be rouded. * @param pixels * dimension of the resultant image * @return new bitmap with the specified dimension */ public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); final RectF rectF = new RectF(rect); final float roundPx = pixels; paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); canvas.drawRoundRect(rectF, roundPx, roundPx, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } }