Draw text on new canvas android

Here is an example of how to draw text on a new canvas in Android:

Step 1: Create a new Canvas

First, you need to create a new Canvas object. You can do this by getting a reference to a SurfaceView or a View and calling its getHolder() method, which returns a SurfaceHolder object. Then, you can call the lockCanvas() method on the SurfaceHolder object to get a new Canvas object.

Here is an example:

SurfaceView surfaceView = new SurfaceView(this);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
Canvas canvas = surfaceHolder.lockCanvas();

Step 2: Set the Text

Next, you need to set the text you want to draw on the canvas. You can do this by creating a Paint object and setting its setTextSize() method to the desired font size. Then, you can call the setText() method on the Paint object to set the text.

Here is an example:

Paint paint = new Paint();
paint.setTextSize(24);
paint.setColor(Color.BLACK);
String text = "Hello, World!";

Step 3: Draw the Text

Finally, you can draw the text on the canvas by calling the drawText() method on the Canvas object. You need to pass the Paint object, the text, and the coordinates where you want to draw the text.

Here is an example:

canvas.drawText(text, 10, 20, paint);

Step 4: Unlock the Canvas

After drawing the text, you need to unlock the canvas by calling the unlockCanvas() method on the SurfaceHolder object.

Here is an example:

surfaceHolder.unlockCanvas();

Here is the complete code:

SurfaceView surfaceView = new SurfaceView(this);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
Canvas canvas = surfaceHolder.lockCanvas();

Paint paint = new Paint();
paint.setTextSize(24);
paint.setColor(Color.BLACK);
String text = "Hello, World!";

canvas.drawText(text, 10, 20, paint);

surfaceHolder.unlockCanvas();

Note that this code assumes you are running this code in a separate thread, such as a Thread or an AsyncTask. If you are running this code in the main thread, you will need to use a Handler to draw the text on the canvas.

Also, this is just a basic example, you can customize the text drawing by using different font styles, colors, and sizes.