Android draw text on canvas. Paint — to describe how to draw the commands.

Android draw text on canvas. NET Multi-platform App UI (. Aug 12, 2015 · Is there another way to draw an object on a canvas in android? This code inside draw() doesn't work: Bitmap bmp = BitmapFactory. trim()); canvas. mPaint. drawText(text, x, y, p Aug 17, 2018 · The android docs suggest that editable text should be entered using DynamicLayout, so I've been attempting to use dynamicLayout. Drawing text on the android canvas heavily depends on text bounds and aligning such text has to be done in-line with the defined bounds. getTypeface(); Typeface bold = Typeface. 09 This is my (shortened) thread: Apr 27, 2017 · I need to implement curved text which draw text on circular path on canvas. Drawing commands — to indicate to the canvas what to draw. When you want to draw shapes or text into a view on Android, you need: Mar 2, 2013 · In this method documentation it's written that: x The x-coordinate of origin for where to draw the text y The y-coordinate of origin for where to draw the text But it doesn't say anything abo Aug 27, 2013 · I am currently creating an image editor and am attempting to draw text on top of on image using canvas. Text which shows is length of line that shows with line when it draws on canvas. sp2px(getResources(), 14)); // set font size Typeface currentTypeFace = currentPainter. drawText(label, width / 4, height / 3, paint_text); Once it is done, user can edit that text so I want to delete the already drawn text from canvas before edit it and write new text. I draw text in canvas with canvas. I’m using a SurfaceView and needed to draw some text on it. getDrawable(R. but from this code i can write text in straight . setBounds(x, y, x + 20, y + 20); background. * * @param paint * the Paint to set the text size for * @param desiredWidth * the desired width * @param text * the text that should be that width */ private static void setTextSizeForWidth(Paint paint, float desiredWidth, String text) { // Pick a reasonably large Mar 25, 2013 · How to draw a filled rectangle with specified bounds and inside that rectangle text to be drawn using Canvas Android ?? I tried . Jul 6, 2019 · To draw onto a canvas in Android, you will need four things: A bitmap or a view — to hold the pixels where the canvas will be drawn. 12. This practical shows you how to create a canvas, associate it with a bitmap, and associate the bitmap with an ImageView for display. Drawing to a canvas is better when your app needs to regularly redraw itself. With the Canvas, you have complete control over every pixel on the screen, allowing you to create stunning visual experiences. ttf"); Nov 18, 2016 · I have an Android project bubbling away. There are different methods that are used to draw different shapes on our Canvas. getAssets(), "myfont. Get access to a Canvas instance. setBounds(left, top, right, bottom); d. onDraw(canvas); this. getResources(), R. Jan 6, 2022 · Canvas works in the co-ordinate system, like how you had back in your school days. Sep 1, 2010 · There are two main ways you can draw a line, by using a Canvas or by using a View. borderWidth=3 and borderColor=black and part within rectangle don't have content or color. public void drawText(float x,float y ,String Text,Canvas canvas,Paint paint1 ,int count ) { float xren =text. So the rest of your drawn elements are not rotated. draw(canvas); it just draws the backgroundDrawable. left, -textBounds. ALERT: This article might be outdated and not fit for your needs. Jun 9, 2015 · This function gives you vertically and horizontally centered text with a background. drawText() method. drawTextOnPath(QUOTE, circle, 485, 20, tPaint); but it is not working for different length of the text. 2023. To draw text in Compose, you can typically use the Text composable. Paint). drawText(text, -textBounds. The CustomPaint widget takes a CustomPainter object as a parameter. More details soon :) I’m using a SurfaceView and needed to draw some text on it. Aug 27, 2013 · Using a vertical textview and drawing text vertically on a canvas are different things. create(currentTypeFace, Typeface. BOLD); currentPainter Mar 20, 2023 · Text Alignment. From the documentation we see that we need to use the following method: Feb 24, 2015 · I am developing a image commenting application. decodeResource(getResources(), R. May 1, 2017 · Here's a much more efficient method: /** * Sets the text size for a Paint object so a given string of text will be a * given width. drawText(). NET MAUI) graphics, in the Microsoft. save(); canvas. Do we have any Method in Canvas which takes TextView as a parameter or any other method to display Text Aug 3, 2019 · In this blog, I list every draw function available in Android Canvas: 23 of them. drawRect(x, y, x + w, y + h, mPaint); but text is not inside of that rectangle. Kindly help me out on this situation. CENTER property in the paint before drawing any text: Draw text inside a filled rectangle using Canvas Android Apr 27, 2017 · I need to implement curved text which draw text on circular path on canvas. BLACK); canvas. I need to break the line to multiline when the text Jul 25, 2012 · I want to remove text from Canvas that I have drawn by using following code. For this give me some code suggestions. Sep 11, 2015 · background. Learn more Explore Teams Jul 28, 2014 · Target: to draw text letter by letter Result: text draws on different layers: Text to draw : Hello World!!! public class DrawThread extends Thread { public static final String TAG = DrawThread. But how can I draw it with the text/the letter inside? That it looks like this: (The background ist the canvas, the orange and white one is the Background and the "A" is the letter/text) EDIT: Code at 21. Dec 13, 2017 · I need to draw some text on a canvas. Sep 6, 2011 · I want to draw text on image ( for saving that image with text ). String, float, float, android. Apr 6, 2018 · The Android Canvas offers a variety of drawing functions for implementing custom graphics in your app. It only works well with monospaced fonts (characters with the same width). drawText("Text",50, 50, paint); canvas. More details soon 🙂. While using this API the screen of the user’s device is called Canvas on which we have to draw different types of shapes and designs. foobar, null); d. Feb 24, 2015 · I am developing a image commenting application. graphics. Jun 30, 2011 · First: If you draw your text at the x and y position you specified, you draw it at the lower right corner, starting with exactly that pixel. WHITE); currentPainter. I have done following code. In order to enjoy its updated version, visit Android Guide To: Drawing Text Over Bitmap. You can put any TTF font in your assets folder and load it using: Typeface. Which function in Canvas to use void drawRect(float left, float top, private Canvas canvas; @Override protected void onDraw(Canvas canvas) { super. Java documentation for android. Apr 26, 2021 · The drawing of the different shapes is done using Bitmap. setTextSize(16); canvas. However, if you are in a DrawScope or you want to draw your text manually with customization, you can use the DrawScope. I have tried the drawTextOnPath() method. . 4 days ago · Draw text. e. Now when I click on a particular text, I need to draw an oval around that text and again when we click on another text, the oval shape should appear on the clicked text. Draw text on Canvas with custom Height - Android. Sep 8, 2011 · how to draw empty rectangle with etc. Works for me Here's what I mean: Apr 1, 2013 · Also, for nicer results, make sure to set the Align. Apr 14, 2013 · I'm doing an Android Game, and I'm using a function like this to show texts on the device screen: public void drawString(String text, int x, int y, Paint paint) { canvas. A common use of Canvas is to draw text to a given region of a custom View, Drawable, Bitmap Nov 23, 2016 · I have an Android project bubbling away. top + yourY, paint); Jul 15, 2010 · For example the width from measure text bounds may actually look too small: However when adding an additional text the bounds for one letter looks normal: Images taken from Android Developers Guide to Custom Canvas Drawing Jul 6, 2019 · It works when drawing text on a Canvas, but applying the shadow to other commands such as drawBitmap doesn’t yield the same results across API levels. Code I have used : May 2, 2023 · The good way to draw a Drawable on a canvas is not decoding it yourself but leaving it to the system to do so: Drawable d = getResources(). Browse the sample. You can also customize the text size, alignment, and other properties. Because of this, we need to look at the different variations of how text could be aligned on the android canvas and how this decision can affect the x & y values on the canvas. drawText(text, x, y, imgPaint); This appears in a single line. Start by creating a Paint object. i tried this before saving. I can open the soft keyboard, but even after setting my view to focusable and requesting focus, the onKeyUp() does not fire. Nothing will be drawn on your canvas. Drawing a Line with Canvas. Following is my Class to draw circular text on the canavs. can't write text at angle . Keep in mind, since you're not attaching it to a layout, you'll need to lay it out manually before drawing it: view. Canvas. drawable. rotate(90f, 50, 50); canvas. One thing I want to make clear that I write text on canvas with image bitmap. i have image view i set bitmap to that image i want to Draw the text on image (text entered by user ). The rest of the app is mostly drawing on the SurfaceView Canvas directly, but I need some text too. drawCircle(xCordinate, yCordinate, RADIUS, drawPaint); } And finally, for every view refresh or new draw on the screen, you need to call invalidate method. Jan 12, 2013 · canvas. 1. draw(canvas). However, in case we want to have a custom view and have better control of the text, we could use the Canvas ' Nov 27, 2023 · Drawing text on a canvas in Jetpack Compose allows for creative and flexible text rendering in your Android app. ANTI_ALIAS_FLAG); currentPainter. To draw text, create a TextMeasurer using rememberTextMeasurer and call drawText with the measurer: Jun 27, 2024 · The Canvas class defines methods for drawing text, lines, bitmaps, and many other graphics primitives. restore(); The save() and restore()methods respectively save the state of the canvas and restores it. Maui. Paint paint = new Paint(); canvas. Aug 3, 2019 · In Android, when we want to have some Text, we would just use TextView. I need to break the line to multiline when the text May 20, 2014 · Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. getWidth()/2, for height the same for test drawing. Canvas in mobile looks like, How to draw different shapes on Canvas using Compose? It is very straightforward to draw on the Canvas of your phone using Compose. layout(0, 0, viewWidth, viewHeight); Mar 19, 2021 · Use native Canvas to draw text. Thanks in advance May 5, 2015 · Yeah, you can do this. canvas = canvas; canvas. Canvas — to run the drawing commands on. In Compose, you can draw text on a canvas by creating a text measure and calling drawText, resulting in the measuring string. I've already added a rectangular box in canvas and my goal is to make this text fit within the box but no matter what I try, text never fits perfectly for all Sep 30, 2024 · In this article. pushpin); canvas. Apps, such as video games, should draw to the canvas on their own. The original Bitmap that you draw on your Canvas with drawBitmap will never be modified. To draw in canvas you need to create Canvas composable, that takes Modifier as a May 10, 2017 · Use new Canvas(Bitmap bitmap) to provide a Canvas with a Bitmap which will contain the result of your drawing operations. Photo by Alexander Andrews on Unsplash Mar 10, 2017 · The text size is automatically scaled by Canvas based on the canvas density, which can be found using Canvas. bitmap, text, paths etc) In the next few articles, we will be diving into other parts of working with Canvas and drawing on Android. A hopefully quick question, but I can't seem to find any examples I'd like to write multi-line text to a custom View via a Canvas, and in onDraw() I have: Jul 6, 2019 · The Paint object is then used for drawing objects (i. drawPaint(paint); paint. createFromAsset(context. The reason for the inconsistency between API levels is because the Canvas APIs are bundled with the Android Platform and therefore are not updated until the OS is updated. GREEN); canvas. The rest of the app is mostly drawing on the SurfaceView Canvas directly it's full function for drawing only text . Jul 29, 2013 · I want a Bitmap icon with bold text to draw it on map. decodeResource(PropertyMapList. Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2. top, paint); And you can move around the text by summing the desired amount of displacement to the two coordinates: canvas. Second: Canvas is not a View (does not extend the View class). You can use these methods in onDraw() to create your custom user interface (UI). In particular, if you need to vertically center-align the drawn text, try getting the boundaries of the text "a" (without quotes), instead of using the text you intend to draw. When setting the text size on a paint object that will be drawn on Canvas, work with a unit value of dp or sp and let Canvas handle the scaling for you. drawText(java. 5 Attribution License. – user2259824. Jul 29, 2016 · I need to draw a text on a circle path. Text Drawing; Color Drawing; Image Drawing; In case you don’t have experience making custom views, you can May 8, 2014 · I believe that if you want to draw text near the upper left corner you should do this: canvas. If you only want to paint the text these two methods are not necessary. Here is an output images that i t Aug 12, 2023 · In conclusion, Android Canvas Drawing is a versatile and powerful tool for implementing custom graphics and visuals in your Android applications. Paint — to describe how to draw the commands. At the moment, you cannot draw text directly on the Jetpack Compose canvas. Graphics namespace, enables you to draw graphical objects on a canvas that's defined as an ICanvas object. I have a snippet to write text on image: Bitmap icon = BitmapFactory. measureText(Text. setColor(Color. draw(canvas); This will work with all kinds of drawables, not only bitmaps. drawText(mText, x, y, mPaint); mPaint. ? We have Canvas. BLACK); paint. drawText("My Text", x, y, paint); Here's the relevant documentation about it: Key points. Feb 13, 2012 · Try this custom textview, I don't remember where I took if from (here in StackOverflow), if any one remembers, please post a link in the comments. so how to modify this function for drawing this text How to Draw TextView on Canvas in android. But for texts like "fertile window" in the image attched, the text rotates and is not readable. Dec 13, 2013 · You can easily change font by loading a new TypeFace. DrawBitmap(), Canvas. Jun 28, 2012 · How can i draw text on canvas as shown in below image highlighted in Green rectangle. canvas. currentPainter = new Paint(Paint. Try bm. To do so, you have to access the native canvas from the Android framework to draw some Jun 8, 2019 · **How can i draw line with text in canvas. setTextSize(Utils. Understanding the Working of Canvas API. You can optimize that later. this. X-Axis and Y-Axis. It does draw circular path using. lang. I want to draw an oval shape around the text on Canvas, I am displaying the 3 texts on Canvas using drawwText() method. By mastering this technique, you can create custom text layouts and integrate text into your graphical designs, enhancing both the functionality and aesthetic of your app’s UI. From the documentation we see that we need to use the following method: Dec 29, 2016 · To paint in Flutter you use the CustomPaint widget. In that class you have to override the paint method, which gives you a canvas that you can paint on. getDensity(). So far I have been successful in doing this but when the user enters text that is Nov 27, 2023 · Drawing text on a canvas in Jetpack Compose allows for creative and flexible text rendering in your Android app. 22. May 18, 2011 · If you already have a font in use and want to use a bold version of that you can do this. left + yourX, -textBounds. Oct 28, 2010 · You will have to use the drawText method of the Canvas class. drawTextOnPath(Text, textPath[count], gipa, -10, text); } Using this function I'm drawing text on my canvas. zzlnub dtuxgs rqu uumucy ukxfdt pokz ldiii daasd kgqq pwgie