draw Text on Canvas with Gravity - Android Graphics

Android examples for Graphics:Canvas

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Description

draw Text on Canvas with Gravity

Demo Code


import android.graphics.Canvas;
import android.graphics.Paint;

public class Main{
    public static void drawText(Canvas canvas, Paint paint, float x,
            float y, String text, Gravity vertical, Gravity horizontal) {
        float sizeX = paint.measureText(text);
        float sizeY = paint.getTextSize();
        float tx = x;
        float ty = y;
        switch (vertical) {
        case GRAVITY_TOP:
            ty += sizeY;/*from   w w  w  .  j  ava  2  s.  co m*/
            break;
        case GRAVITY_CENTER:
            ty += sizeY / 2f;
            break;
        case GRAVITY_BOTTOM:
            // OK
            break;
        }
        switch (horizontal) {
        case GRAVITY_RIGHT:
            tx -= sizeX;
            break;
        case GRAVITY_CENTER:
            tx -= sizeX / 2f;
            break;
        case GRAVITY_LEFT:
            // OK
            break;
        }

        canvas.drawText(text, tx, ty, paint);
    }
}

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