CODEWITHSUNDEEP
androidcanvasandroid-custom-viewcustom-view
Sarath Vuyyuru
Sarath Vuyyuru

Reputation: 118

android canvas.drawText in custom view

I have a custom view in which i want to drawText with these parameters.

int stopY = 500;

// ...

Log.info("Drawing line " + line + " at " + String.valueOf(stopY));
canvas.drawText(line, 40, stopY, Paint);

i am having a array of text and i am drawing 

 for (int i = startLineNumber; i < (startLineNumber + linesVisible); i++, screenDisplayLine++)
        {
            if (i >= totalLines)
            {
                break;
            }
            int startY = (int) (i*lineSpacing + (screenDisplayLine * lineSpacing));
            int stopY = startY + lineSpacing;
       canvas.drawText(line, 40, stopY, Paint);//stop y increments by 20 every time i use 
    }

it works in straightly but when i needs startnumber as 50

that mean

 stopy = stopY+(linenumber*20)//(stopY + (50 * 20))

but it fails in this case

any help

I can see the correct values in the log through LogCat, but the text is not drawn. Can anyone help me out?

Upvotes: 1

Views: 1691

Answers (3)

Sarath Vuyyuru
Sarath Vuyyuru

Reputation: 118

Thanks to both of your answers; with that I figured out the answer

int stopY = 500;

scrollTo(0,stopY);
canvas.drawText(line, 0, stopY, Paint);

This works fine. As you said it goes to out-off screen size I used 

scrollTo(0,stopY);

So that it scrolls to that point in the screen and when I used 

canvas.drawText(line, 0, stopY, Paint);

It has drawn it there without any problem.

Upvotes: 1

RajaReddy PolamReddy
RajaReddy PolamReddy

Reputation: 22493

I think it goes to out-off screen size, use less value for Y and draw.

or

may be problem with paint function 

canvas.drawText(String.valueOf(angle_Top), 15, 25, new Paint());

Upvotes: 2

MAC
MAC

Reputation: 15847

canvas.drawText(String.valueOf(stopY), 40, stopY, Paint);
                ^^^^^^^^^^^^^^^^^^^^^

have you set the color for paint ? for ex:

mPaint.setColor(Color.RED);

OR

You are using stopY=500; // may be out of your screen

try to stopY=40; and check output

Upvotes: 1

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