Develop Reference

Circular ImageView background is actually square and not circular?

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));

Text cutout in bitmap for Android

I want to achieve the following effect in Android:
http://i.imgur.com/SPwQuNq.png
I am pretty close using the method below, but I now need it to clear the background while the text still is there. The overlay text also has a light tint – because of #setColor(Color.WHITE) – but without it no text is shown.
public static Bitmap filterTextLetters(Bitmap bitmap, String text) {
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.WHITE);
paint.setTextAlign(Align.CENTER);
paint.setTypeface(Typeface.DEFAULT_BOLD);
paint.setTextSize(180);
paint.setXfermode(new PixelXorXfermode(Color.BLACK));
Bitmap photo = bitmap.copy(Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(photo);
canvas.drawText(text, Statics.PHOTO_WIDTH / 2, Statics.PHOTO_HEIGHT / 2, paint);
return photo;
}

You can use a BitmapShader:
public static Bitmap filterTextLetters(Bitmap bitmap, String text) {
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setTextAlign(Align.CENTER);
paint.setTypeface(Typeface.DEFAULT_BOLD);
paint.setTextSize(180);
Shader shader = new BitmapShader(
bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(shader);
final int width = bitmap.getWidth();
final int height = bitmap.getHeight();
Bitmap photo = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(photo);
canvas.drawText(text, width / 2, height / 2, paint);
return photo;
}

How to write text more than 10 letters using Canvas and paint on map?

Marking few markers and adding names using Canvas and Paint on map. But am able to see the text only 9 characters rest are hiding (not visible). How to do it?
private Bitmap drawTitleOnMarkerIcon(MarkingInfo markingInfo) {
Bitmap bm = BitmapFactory.decodeResource(getResources(), AddLocationTypeIcon.getIcon(markingInfo.getType())).copy(
Bitmap.Config.ARGB_8888, true);
Canvas canvas = new Canvas(bm);
Paint paint = new Paint();
paint.setColor(Color.BLUE);
paint.setAntiAlias(true);
paint.setFakeBoldText(true);
paint.setTextSize(16);
paint.setTextAlign(Align.LEFT);
canvas.drawText(markingInfo.getName(), 0, 60, paint);
BitmapDrawable draw = new BitmapDrawable(getResources(), bm);
return draw.getBitmap();
}
I should able to see complete text, When I have more than 15 character just I need to wrap it to next line. search many sites and posted query previously but I got no solution. please do help to achieve this task

private Bitmap textAsBitmap(String text, float textSize, int textColor) {
Paint paint = new Paint();
paint.setTextSize(textSize);
paint.setColor(textColor);
paint.setFakeBoldText(true);
paint.setTextAlign(Paint.Align.LEFT);
int width = (int) (paint.measureText(text) + 0.5f); // round
float baseline = (int) (-paint.ascent() + 0.5f); // ascent()is negative
int height = (int) (baseline + paint.descent() + 0.5f);
Bitmap image = Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(image);
canvas.drawText(text, 0, baseline, paint);
return image;
}
MarkerOptions().title(Name()).icon(BitmapDescriptorFactory.fromBitmap(textAsBitmap));

Add Watermark to an image just like flipboard in Android

I want to add watermark to images just like flipboard does.
As you can see text is added at the bottom of the images with black transparent background. I want to do the exact same thing. Till now I've managed to write text on image but I am not able to make it's background black transparent just like the above picture.
Here's my code so far which I found from here.
public Bitmap mark(Bitmap src, String watermark) {
int w = src.getWidth();
int h = src.getHeight();
Shader shader = new LinearGradient(0, 0, 100, 0, Color.TRANSPARENT, Color.BLACK, TileMode.CLAMP);
Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());
Canvas canvas = new Canvas(result);
canvas.drawBitmap(src, 0, 0, null);
Paint paint = new Paint();
paint.setColor(Color.WHITE);
paint.setTextSize(50);
paint.setAntiAlias(true);
paint.setShader(shader);
paint.setUnderlineText(false);
canvas.drawText(watermark, 10 , h-15, paint);
return result;
}

I think it doesn't require gradient, you can draw it using simple color and using drawRect() method.
Sample code is below, i gonna take the black background size as 25% of whole image.
public Bitmap mark(Bitmap src, String watermark) {
int w = src.getWidth();
int h = src.getHeight();
Paint bgPaint=new Paint();
bgPaint.setColor(Color.parse("AA000000")); //transparent black,change opacity by changing hex value "AA" between "00" and "FF"
Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());
Canvas canvas = new Canvas(result);
canvas.drawBitmap(src, 0, 0, null);
Paint paint = new Paint();
paint.setColor(Color.WHITE);
paint.setTextSize(50);
paint.setAntiAlias(true);
paint.setUnderlineText(false);
//should draw background first,order is important
int left=0;
int right=w;
int bottom=h;
int top=bottom-(h*.25);
canvas.drawRect(left,top,right,bottom,bgPaint);
canvas.drawText(watermark, 10 , h-15, paint);
return result;
}

android mask bitmap

I need to create a custom view amd in onDraw method I need to draw some bitmaps, using a mask. I created a paint:
Paint maskPaint = new Paint();
maskPaint.setAntiAlias(true);
maskPaint.setXfermode(new AvoidXfermode(Color.RED, 0, AvoidXfermode.Mode.TARGET));
and I draw my bitmap on canvas using this paint. My problem is that at the corners, my mask have some pixels with alpha less than 255. Is there a way to draw my bitmap's pixels on the mask with the same alpha that mask image has on those pixels with aplha greater than zero?

private Bitmap maskingImage(Bitmap s, int drawable) {
Bitmap original = s;
Bitmap mask = BitmapFactory.decodeResource(getResources(),drawable);
Bitmap result = Bitmap.createBitmap(mask.getWidth(), mask.getHeight(),Bitmap.Config.ARGB_8888);
Canvas mCanvas = new Canvas(result);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
mCanvas.drawBitmap(original, 0, 0, null);
mCanvas.drawBitmap(mask, 0, 0, paint);
paint.setXfermode(null);
return result;
}

Resources resources = this.getResources();
Bitmap mask = BitmapFactory.decodeResource(resources,R.drawable.fx_lightleak2_small);
int width=bMap.getWidth();
int height=bMap.getHeight();
Bitmap resizedbitmap=Bitmap.createScaledBitmap(mask, width, height, true);
Bitmap result = Bitmap.createBitmap(bMap.getWidth(), bMap.getHeight(), Config.ARGB_8888);
Canvas c = new Canvas(result);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setXfermode(new PorterDuffXfermode(Mode.LIGHTEN));
c.drawBitmap(bMap, 0, 0, null);
paint.setAlpha(200);
c.drawBitmap(resizedbitmap, 0, 0, paint);
paint.setXfermode(null);
effect_5.setImageBitmap(result);