I need to draw stroke rectangle with rounded corners.
here is my code:
mLinePaint = new Paint();
mLinePaint.setColor(mDotColorTouched);
mLinePaint.setAntiAlias(true);
mLinePaint.setStrokeWidth(mLineWidth);
mLinePaint.setStyle(Paint.Style.STROKE);
mLinePaint.setStrokeCap(Paint.Cap.ROUND);
bitmap = Bitmap.createBitmap(300,
300, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
RectF r = new RectF(0, 0, 300 , 300);
c.drawRoundRect(r, 30, 30, mLinePaint);
but as you can see the line width is bigger in the corners...
any idea why it happens and how to fix this?
here is screen
Try this set of code it's working.
Paint paint = new Paint();
paint.setStyle(Paint.Style.STROKE);
paint.setColor(Color.BLUE);
paint.setStrokeWidth(10);
Bitmap b = Bitmap.createBitmap(300, 300, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b);
RectF rectF = new RectF();
rectF.set(5,5,250,250);
c.drawRoundRect(rectF, 10, 10, paint);
imgView.setImageBitmap(b);
Related
I have a question regarding a circular ImageView. When I try to set the background color of my ImageView, it actually ends up being a square and not a circle when in reality I would want the ImageView to be a simple circular ImageView with some text as the image. Here was my attempt.
ImageView imageView = postViewHolder.fourthCommenter;
Bitmap b=Bitmap.createBitmap(30, 30, Bitmap.Config.ARGB_8888);
BitmapShader shader = new BitmapShader(b, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
Paint paint = new Paint();
paint.setShader(shader);
paint.setAntiAlias(true);
Canvas c = new Canvas(b);
c.drawCircle(b.getWidth()/2, b.getHeight()/2, b.getWidth()/2, paint);
c.drawText("+10",30,30,paint);
imageView.setBackgroundColor(ContextCompat.getColor(context, R.color.material_color_grey_200));
imageView.setImageBitmap(b);
All I want is to have the image show a grey circular Imageview with the word "+10" in it. What shows up is a simple square Imageview with no text in it. I can't see what I am doing wrong.
Any help would be apprecaited.
Thanks!
EDIT: Here is an example of what I would want. I want to have an image that looks exactly like the +16 image shown on this photo:
All I want is to have the image show a grey circular Imageview
Try this code
Bitmap picture = BitmapFactory.decodeResource(getResources(), R.mipmap.add_image);
ImageView imageView = (ImageView) findViewById(R.id.imgProfilePicture);
imageView.setImageBitmap(getRoundedBitmap(picture));
public Bitmap getRoundedBitmap(Bitmap bitmap){
Bitmap circleBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
Paint paint = new Paint();
paint.setShader(shader);
paint.setAntiAlias(true);
Canvas c = new Canvas(circleBitmap);
c.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getWidth() / 2, paint);
return circleBitmap;
}
Your xml file
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/imgProfilePicture"
android:layout_width="110dp"
android:layout_height="110dp"
android:layout_marginBottom="20dp"
app:civ_border_width="3dp"
app:civ_border_color="#color/light_gray" />
and add this in build.gradle
compile 'de.hdodenhof:circleimageview:2.1.0'
Cirular ImageView Done !
Not sure if it's the proper way to do it , but it should work for your case :
First use this to create the bitmap with the required circle shape :
public Bitmap getCircledBmp(Context mContext,Bitmap bmp){
Canvas canvas = new Canvas(bmp);
int color = ContextCompat.getColor(mContext, R.color.material_color_grey_200);
Paint paint = new Paint();
Rect rect = new Rect(0, 0, bmp.getWidth(), bmp.getHeight());
RectF rectFloat = new RectF(rect);
paint.setAntiAlias(true);
paint.setColor(color);
canvas.drawARGB(0, 0, 0, 0);
canvas.drawOval(rectFloat, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bmp, rect, rect, paint);
return bmp;
}
Then add the text that you want :
public Bitmap drawText(String text, Bitmap bmp, int textSize) {
//text dimensions
TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
textPaint.setTextSize(textSize);
textPaint.setColor(Color.BLACK);
textPaint.setTextAlign(Paint.Align.CENTER);
StaticLayout mTextLayout = new StaticLayout(text, textPaint,
bmp.getWidth(), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
Canvas canvas = new Canvas(bmp);
//draw text
canvas.save();
canvas.translate((canvas.getWidth() / 2), (canvas.getHeight() / 2) -
((mTextLayout.getHeight() / 2)));
mTextLayout.draw(canvas);
canvas.restore();
return bmp;
}
In the end you should get your desired image like this :
Bitmap bmp = Bitmap.createBitmap(100,100,Bitmap.Config.ARGB_8888); //change the values whatever you like
ImageView imageView = postViewHolder.fourthCommenter;
imageview.setImageBitmap(drawText("+10",getCircledBmp(this,bmp),30));
This is what I have:
Bitmap result = Bitmap.create(600, 600, Config.ARG_8888);
Canvas canvas = new Canvas(result);
canvas.clipPath(path) // custom path is a rotated rectangle that has an offset x and y within the 600x600 rectangle
canvas.drawBitmap(sourceBitmap, 0, 0, new Paint());
canvas.save();
When I check the result bitmap, I only see the clip path which is I want, but I want the result image to be the same size as the clip path and not still 600x600.
Thanks
as i said in the comment above, you can use drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) to crop your Bitmap result to the cropped one or you can do it directly:
// get the Bitmap
Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
// setup sample Path
Path path = new Path();
path.moveTo(10, 10);
path.lineTo(30, 10);
path.lineTo(30, 20);
path.close();
RectF bounds = new RectF();
path.computeBounds(bounds, true);
Rect pathBounds = new Rect();
bounds.roundOut(pathBounds);
Bitmap outBitmap = Bitmap.createBitmap(pathBounds.width(), pathBounds.height(), Bitmap.Config.ARGB_8888);
Shader shader = new BitmapShader(b, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
Canvas c = new Canvas(outBitmap);
Paint paint = new Paint();
paint.setShader(shader);
c.translate(-pathBounds.left, -pathBounds.top);
c.drawPath(path, paint);
I wants to draw Circle on empty canvas, but not getting how to do.
This is code I'm using to create Empty canvas inside my custom ImageView class.
bmpBase = Bitmap.createBitmap(image_width, image_height, Bitmap.Config.ARGB_8888);
canvas = new Canvas(bmpBase);
Paint paint = new Paint();
paint.setColor(Color.BLUE);
canvas.drawCircle(100, 100, 30, paint);
try this, in your MainActivity first find your imageView and then:
drawingImageView = (ImageView)findViewById(R.id.DrawingImageView);
Paint paint = new Paint();
paint.setColor(Color.BLUE));
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(15);
bmpBase = Bitmap.createBitmap(image_width, image_height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawCircle(100, 100, 30, paint);
drawingImageView.setImageBitmap(bitmap);
Try this:
You need to set the Paint style to stroke if you just want an outline with no fill:
Paint p = new Paint();
p.setStyle(Paint.Style.STROKE);
and if you want filled circle then:
Paint p = new Paint();
p.setStyle(Paint.Style.FILL);
Or you can refer this:
http://android-coding.blogspot.in/2012/04/draw-circle-on-canvas-canvasdrawcirclet.html
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);
In my application I used canvas to draw the text. now I want to set the width of the draw text. I can set only x , y position. I can't set width and height.
My problem
update
for example "India is my Country" or if any length text it goes outside of canvas that is outside of the background image.
i want to print "India is
my country" if i set width mean i think it goes to next line
#Override
protected void onDraw(Canvas canvas1)
{
Paint paint = new Paint();
Bitmap myBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.ban_background);
Bitmap resizeImage1=Bitmap.createScaledBitmap(myBitmap,590,350,false);
canvas1.drawColor(Color.BLACK);
canvas1.drawBitmap(resizeImage1,10,5, null);
paint.setStyle(Paint.Style.FILL);
paint.setAntiAlias(true);
paint.setTextSize(25);
paint.setColor(Color.BLUE);
paint.setFakeBoldText(true);
paint.setTextSize(20);
paint.setStyle(Paint.Style.FILL_AND_STROKE);
canvas1.drawText(CameraText, 100,175, paint);
}
}
i have used to create a bitmap as follows and iam able to set the width and height
Bitmap finalImage = Bitmap.createBitmap(IMAGE_WIDTH, IMAGE_HEIGHT,
Bitmap.Config.RGB_565);
Bitmap tempImage = Bitmap.createBitmap(IMAGE_WIDTH / 2, IMAGE_HEIGHT,
Bitmap.Config.RGB_565);
Canvas g = new Canvas(finalImage);
Canvas gtemp = new Canvas(tempImage);
g.drawColor(Color.WHITE);
gtemp.drawColor(Color.WHITE);
Paint pnt = new Paint();
pnt.setColor(Color.BLACK);
pnt.setTextAlign(Paint.Align.CENTER);
pnt.setTextSize(40);
pnt.setTypeface(font1);
g.drawText(input, IMAGE_WIDTH / 2, 40, pnt);
Rect grct = new Rect(0, 0, IMAGE_WIDTH, IMAGE_HEIGHT);
Rect grctTemp = new Rect(0, 0, IMAGE_WIDTH / 2, IMAGE_HEIGHT);
gtemp.drawBitmap(finalImage, grct, grctTemp, pnt);
`
i am not sure what you mean but you can try the setStrokeWidth(2.0f)
i hope this helps :D