dip,px,sp,px相互转换

public static int dip2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}


public static int px2dip(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}


public static int px2sp(float pxValue, float fontScale) {
return (int) (pxValue / fontScale + 0.5f);
}


public static int sp2px(float spValue, float fontScale) {
return (int) (spValue * fontScale + 0.5f);
}