Expression

• Support brackets and the modulo arithmetic functions
• modulo arithmetic: + - * /%
• MIUI7 Added support for:
  • ! : logical negation
  • ** : and
  • || : or
  • == : equal
  • != : not equal
    • Example: ! (# Cur_weather_type-1 == 4 || # cur_weather_type-1 == 5)
• More functions : sin, cos, tan, asin, acos, atan, sinh, cosh, sqrt, abs, min
• len (digital) given the number of digits len (1234) = 4
• digit (digital, the first of several) to take a given number of the first of several digit (12345, 2) = 4 Note: The subscript right to left, and from the beginning
• substr (the original string, the string starting position, the string length) substr ('Today is really hot', 1,2) = 'naive'
• round () rounded to the nearest integer
• int () rounded down
• rand () random number between takes 0-1
• Examples:
  • int (rand () * a + b) is taken to an integer b to b + a between
  • eq (x, y) // x == y 1:? 0
  • ! ne (x, y) // x = y 1:? 0
  • ge (x, y) // x> = y 1:? 0
  • gt (x, y) // x> y 1:? 0
  • le (x, y) // x <= y 1:? 0
  • lt (x, y) // x <y 1:? 0
  • isnull (x) // x == null 1:? 0 // if the expression contains a null variable, usually used to bind variables determine whether the found data
  • not (x) x> 0 0:? 1
  • ifelse (x, y, z) // x> 0 y:? z
  • ifelse (x1, y1, x2, y2, ..., z)
  • if x1> 0 return y1; else if x2> 0 return y2; ...; else return z
• + Can concatenate strings, some of the functions can also support a strin,
• isnull can determine whether the string variable is empty
• ifelse can choose
• eqs (@ string1, @ string2) a string comparison function
• formatDate function ('string', time) MIUI 7 new date format to a string
  • Example:

    <Var name = "time" expression = "formatDate ('2 hours' time was on: H: mm', # time_sys + 2 * 60 * 60 * 1000)" type = "string" />
    <Text x = "120" y = "405" textExp = "@ time" size = "45" color = "# 000000" />
    

• Element is visible expression of support visibility = "expression" <= 0invisible> 0 //visible
• align = left, center, right coordinate point horizontal alignment
• alignV = top, center, bottom vertical alignment coordinate points the way
• Note The properties of Image, Text, Time are also applicable