androidCodeMeasureText.java

// by Chris Banes (http://chris.banes.me/2014/03/27/measuring-text/)
int mTextWidth, mTextHeight; // Our calculated text bounds  
Paint mTextPaint = new Paint();

// Now lets calculate the size of the text
Rect textBounds = new Rect();  
mTextPaint.getTextBounds(mText, 0, mText.length(), textBounds);  
mTextWidth = mTextPaint.measureText(mText); // Use measureText to calculate width  
mTextHeight = textBounds.height(); // Use height from getTextBounds()

// Later when you draw...
canvas.drawText(mText, // Text to display  
        mBounds.centerX() - (mTextWidth / 2f),
        mBounds.centerY() + (mTextHeight / 2f),
        mTextPaint
);