I want to show a heart shape Image on an Image similar to following image:
I tried createScaledBitmap but it's not working. Here is my code:
#Override
public Bitmap transform(Bitmap bitmap) {
// TODO Auto-generated method stub
synchronized (ImageTransform.class) {
if (bitmap == null) {
return null;
}
Bitmap resultBitmap = bitmap.copy(bitmap.getConfig(), true);
Bitmap bitmapImage = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_heart);
Bitmap.createScaledBitmap(
bitmapImage, 1, 1, true);
Canvas canvas = new Canvas(resultBitmap);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.WHITE);
paint.setStyle(Paint.Style.FILL);
paint.setTextSize(40);
paint.setShadowLayer(2.0f, 1.0f, 1.0f, Color.BLACK);
canvas.drawText("$250", 10, 400, paint);
canvas.drawBitmap(bitmapImage, 460, 45, null);
bitmap.recycle();
return resultBitmap;
}
}
Image is not scaling I can see very big Image. Above code is in Transformation class of Picasso.
Why it should scale your bitmap image?
Lets go through your code:
Bitmap resultBitmap = bitmap.copy(bitmap.getConfig(), true);
ok this is the bitmap that will have hearth added
Bitmap bitmapImage = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_heart);
You read your hearth image here in order to add it to "main" image later
Bitmap.createScaledBitmap(
bitmapImage, 1, 1, true);
This is redundant call because you omit here the result of method call...
Canvas canvas = new Canvas(resultBitmap);
here we got new canvas with mutable bitmap for modifications
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.WHITE);
paint.setStyle(Paint.Style.FILL);
paint.setTextSize(40);
paint.setShadowLayer(2.0f, 1.0f, 1.0f, Color.BLACK);
canvas.drawText("$250", 10, 400, paint);
You draw price here and it is ok
canvas.drawBitmap(bitmapImage, 460, 45, null);
You draw here a bitmap image that you've read from resources without modifications
bitmap.recycle();
This is redundant from Android 3.0
return resultBitmap;
Return of your image...
As you see you have a method call: Bitmap.createScaledBitmap(bitmapImage, 1, 1, true); That really does nothing. Replace it with: bitmapImage = Bitmap.createScaledBitmap(bitmapImage, 1, 1, true); and it should be fine.
If you want to optimize your memory usage here (because you are creating here 3 bitmaps instead of one) read THIS ARTICLE. Hope that helps :)
Related
`
There is an requirement in my project to set any bitmap into mug and also edit bitmap and wright some text on image then past this bitmap to mug just like attached image .
I need a solution in Android or any supported library, Before I have tried to do this with Android Canvas and its method to draw arc But not reached my requirement.
/**
* Draw one image over other using the canvas paint and path drawing.
*/
public Bitmap createMaskedImageInImageCenterRightMug(Drawable back,
Bitmap bitmapToDrawInTheCenter) {
Bitmap backgroundBitmap = ((BitmapDrawable) back).getBitmap();
int hieghtBack = backgroundBitmap.getHeight();
int widthBack = backgroundBitmap.getWidth();
int hieghtFront = bitmapToDrawInTheCenter.getHeight();
int widthFront = bitmapToDrawInTheCenter.getWidth();
int widthToDrawOnMug = widthBack / 2;
backgroundBitmap = Bitmap.createScaledBitmap(backgroundBitmap, (int) canvas_width, hieghtBack, true);
// Create mask
Bitmap backgroundBitmapMask = Bitmap.createBitmap(backgroundBitmap, 7, 0, (int) (canvas_width / 2), hieghtBack);
if (widthToDrawOnMug <= widthFront) {
bitmapToDrawInTheCenter = Bitmap.createBitmap(
bitmapToDrawInTheCenter, (widthFront * 40) / 100, 0,
(widthFront * 60) / 100, hieghtFront);
}
Bitmap backgroundBitmapScaledMask = Bitmap.createScaledBitmap(
backgroundBitmapMask, widthToDrawOnMug, hieghtBack - 50, true);
bitmapToDrawInTheCenter = Bitmap.createScaledBitmap(
bitmapToDrawInTheCenter, backgroundBitmapScaledMask.getWidth(),
backgroundBitmapScaledMask.getHeight(), true);
Bitmap resultBitmap = Bitmap.createBitmap(
backgroundBitmapScaledMask.getWidth(),
backgroundBitmapScaledMask.getHeight(),
backgroundBitmapScaledMask.getConfig());
Canvas canvas = new Canvas(resultBitmap);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(backgroundBitmapScaledMask, 0, 0, null);
canvas.drawBitmap(bitmapToDrawInTheCenter, 0, 0, paint);
return resultBitmap;
}
/**
* Draw one image over other using the canvas paint and path drawing.
*/
public Bitmap pasteOverMugForRightMug(Drawable back,
Bitmap bitmapToDrawInTheCenter) {
Bitmap backgroundBitmap = ((BitmapDrawable) back).getBitmap();
Bitmap resultBitmap = Bitmap.createBitmap(backgroundBitmap.getWidth(), backgroundBitmap.getHeight(), backgroundBitmap.getConfig());
Canvas canvas = new Canvas(resultBitmap);
canvas.drawBitmap(backgroundBitmap, new Matrix(), null);
Paint paint = new Paint();
canvas.drawBitmap(bitmapToDrawInTheCenter, 0, 25, paint);
return resultBitmap;
}
Here is my code . Some hard code values are used according plain Mug image Aspect Ratio.
Also Tried to do this with Open GL but it was very complex .
And and could not find method for cylinder shape in one of the image processing library Image magic.
if any one have an idea please share .
I have a png image which I want to use as a frame for images in ImageView.
Sorry, it's white that's why invisible
Like this but with sides curved
What is the solution?
I've tried by converting png to patch 9, setting background of parent and source of image view, but none worked. Image doesn't fit inside.
I've done it using PorterDuff. Designed an extra image just with curved border and applied PorterDuff.Mode.SRC_OVER inside setImageResource of Custom Image View.
Here is the overriden function
#Override
public void setImageResource(int resId) {
Bitmap rawBmp = BitmapFactory.decodeResource(getContext().getResources(), resId);
Bitmap rawMask = BitmapFactory.decodeResource(getContext().getResources(), R.drawable.image_frame_arc_filled);
Bitmap rawBorderMask = BitmapFactory.decodeResource(getContext().getResources(), R.drawable.image_frame_arc);
Bitmap bmp = Bitmap.createScaledBitmap(rawBmp, rawBmp.getWidth(), rawBmp.getHeight(), true);
Bitmap mask = Bitmap.createScaledBitmap(rawMask, bmp.getWidth(), bmp.getHeight(), true);
Bitmap borderMask = Bitmap.createScaledBitmap(rawBorderMask, mask.getWidth(), mask.getHeight(), true);
Bitmap bitmap = Bitmap.createBitmap(mask.getWidth(), mask.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawBitmap(bmp, 0, 0, null);
Paint maskPaint = new Paint();
maskPaint.setXfermode(
new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
canvas.drawBitmap(mask, 0, 0, maskPaint);
maskPaint = new Paint();
maskPaint.setXfermode(
new PorterDuffXfermode(PorterDuff.Mode.SRC_OVER));
canvas.drawBitmap(borderMask, 0, 0, maskPaint);
this.setImageBitmap(bitmap);
}
I want to be able to use the following image to mask other bitmap. So basically, I'm trying to get the mask image and replace it's black content with another bitmap. Like this for example:
I'm able to use this mask and create a round version of the original bitmap, but that does not retain that orange border around it. Any thoughts on how I can accomplish this effect? Thanks.
The code that I am using (that only creates a round image) is the following:
private static Bitmap applyMask(ImageView imageView, Bitmap mainImage) {
Canvas canvas = new Canvas();
Bitmap result result = Bitmap.createBitmap(50, 50, Bitmap.Config.ARGB_8888);
canvas.setBitmap(result);
Paint paint = new Paint();
// resize image fills the whole canvas
canvas.drawBitmap(mainImage, null, new Rect(0, 0, 50, 50), paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
canvas.drawBitmap(sMaskImage, 0, 0, paint);
paint.setXfermode(null);
return result;
}
I use below code snipped to set masked images, this sample "bm" is my bitmap and "mMaskSource" is the resource id of mask object position in my drawable folder.
Bitmap mask = BitmapFactory.decodeResource(getResources(), mMaskSource);
Bitmap result = Bitmap.createBitmap(mask.getWidth(), mask.getHeight(),
Config.ARGB_8888);
Canvas mCanvas = new Canvas(result);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
bm = Bitmap.createScaledBitmap(bm, mask.getWidth(), mask.getHeight(),
true);
mCanvas.drawBitmap(bm, 0, 0, null);
mCanvas.drawBitmap(mask, 0, 0, paint);
paint.setXfermode(null);
And finally you can use "result" bitmap object however you wish.
Can we construct a bitmap from a rect.
I draw a bitmap in a rect and want strokes drawn on the bitmap image become part of the image.
I am wondering if I can construct a bitmap from a Rect so the new bitmap has the old image and the strokes as a single image.
Thank You
You can always take a canvas to help you create an already decoded bitmap the way you want:
Bitmap originalBmp = null;//Here goes original Bitmap...
ImageView img = null;//Any imageview holder you are using...
Bitmap modifiedBmp = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);//Configure with your proper size and color
Canvas canvas = new Canvas(modifiedBmp);
//At this point the modified bitmap has the original one, starting from here, you can add any overlay you want...
canvas.drawBitmap(originalBmp, 0, 0, new Paint());
//And do all the other modifications you want here...
canvas.drawLines(new float[]{}, null);
canvas.drawCircle(x, y, radius, null);
//At this point the modified bitmap will have anything you added
img.setImageBitmap(modifiedBmp);
// IF YOU ARE OVERRIDING ONDRAW METHOD
public void onDraw(Canvas canvas){
//Here DO your DRAW BITMAP NOTE: paint must be already created...
canvas.drawBitmap(bt, 0, 0, paint);
paint.setColor(Color.BLACK);
paint.setStrokeWidth(3);
canvas.drawRect(30, 30, 80, 80, paint);
super.onDraw(canvas);
}
Regards!
Yes you can , Using canvas you can draw something on your old bimtap .
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());
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
// do some canvas drawing
canvas.drawBitmap(bitmap, rect, rect, paint);
i have two Bitmap[] (for example "BitM1" and BitM2)
Need to cut BitM1[0] from BitM2[0], BitM1[1] from BitM2[1] (using Xfermode mode.xor)... etc
Bitmap[] vk = new Bitmap[25];
int k=0;
for (v=0;v<25;v++)
{
Bitmap bitmap2 = BitM1[v];
Bitmap bitmap1 = BitM2[v];
vk[k]=Bitmap.createBitmap(bitmap2.getWidth(), bitmap2.getHeight(), bitmap2.getConfig());
Canvas canvas = new Canvas(vk[k]);
Paint paint = new Paint();
paint.setFilterBitmap(false);
canvas.drawBitmap(bitmap2, 0, 0, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.XOR));
canvas.drawBitmap(bitmap1, 0, 0, paint);
bitmap2.recycle();
bitmap1.recycle();
}
imgv3.setImageBitmap(vk[5]);
not work... Crashed...
You are never changing the value of K in the code above, so you are always placing the new Bitmap at location vk[0]. Thus when you attempt to get vk[5], it is not defined. BOOM...Crash!