The returned value of mtext. gettextsize is in pixels (PX ).

Use the followingCodeThe font size will not increase, but will decrease:
Size = (INT) mtext. gettextsize () + 1;
Mtext. settextsize (size );
Later, we found that the returned value of gettextsize is measured in pixels (PX), while that of settextsize () is measured in sp. This result is returned only when the units of the two are inconsistent.

You can use another form of settextsize () to specify the unit:
Settextsize (INT unit, int size)
Typedvalue. complex_unit_px: pixels
Typedvalue. complex_unit_sp: scaled pixels
Typedvalue. complex_unit_dip: Device Independent pixels

The following is normal:
Size = (INT) mtext. gettextsize () + 1;
Mtext. settextsize (typedvalue. complex_unit_px, size );