Conversion tool classes for PX and DIP,SP and dip in Android

Function

It is usually possible to set the component or text size in the code only with PX, through which we can convert a dip (DP) or SP unit value to a value in PX, guaranteeing the same size. Please refer to http://www.cnblogs.com/wader2011/archive/2011/11/28/2266669.html for the parameters in the method.

Code

/**
* Android Size unit conversion Tool class
*
* @author Wader
*
*/
public class Displayutil {
/**
* Convert PX value to dip or DP value to ensure size unchanged
*
* @param pxvalue
* @param scale (attribute density in Displaymetrics Class)
* @return
*/
public static int Px2dip (float pxvalue, float scale) {
return (int) (Pxvalue/scale + 0.5f);
}

/**
* Convert dip or DP values to PX values to ensure size is constant
*
* @param dipvalue
* @param scale (attribute density in Displaymetrics Class)
* @return
*/
public static int dip2px (float dipvalue, float scale) {
return (int) (Dipvalue * scale + 0.5f);
}

/**
* Convert PX value to SP value, keep text size unchanged
*
* @param pxvalue
* @param Fontscale (attribute scaleddensity in Displaymetrics Class)
* @return
*/
public static int px2sp (float pxvalue, float fontscale) {
return (int) (Pxvalue/fontscale + 0.5f);
}

/**
* Convert SP value to PX value, keep text size unchanged
*
* @param spvalue
* @param Fontscale (attribute scaleddensity in Displaymetrics Class)
* @return
*/
public static int sp2px (float spvalue, float fontscale) {
return (int) (Spvalue * fontscale + 0.5f);
}
}

Ext.: http://www.cnblogs.com/wader2011/archive/2011/11/28/2266684.html

(RPM) Conversion tool class for PX and DIP,SP and dip in Android