Display Unit: Px, dip, and SP

Dip: Device Independent pixels (device independent pixels). Different devices have different display effects. This is related to the device hardware. Generally, to support WVGA, hvga, and qvgaWe recommend that you use this,Pixel independent.

Px: pixels (pixels). Different devices have the same display effect. Generally, we use hvga to represent 320x480 pixels, which is usually used.

PT: point, a standard unit of length, 1pt = 1/72 inch, used in the printing industry, very easy to use;

SP: scaled pixels (zoom in pixels). Mainly used for font displayBest for textsize.

Therefore, according to Google's suggestion, it is best to use SP as the unit of textview font size, and to view the textview source code, Android uses SP as the font size unit by default.

Display Unit: Px, dip, and SP