B4A根据弧度返回角度.

While
成员详解:

Abs (Number As Double) As Double
返回绝对值.

ACos (Value As Double) As Double
根据弧度返回角度.

ACosD (Value As Double) As Double
根据角度返回弧度.

Array
根据指定的类型，创建一个一维数组.
语法:

Array As type (值列表).
例如:

Dim Days() As String
Days = Array As String("Sunday", "Monday", ...)
Asc (Char As Char) As Int
返回字符或字符串首字符的unicode码

ASin (Value As Double) As Double
根据弧度返回角度.

ASinD (Value As Double) As Double
根据角度返回弧度.

ATan (Value As Double) As Double
根据弧度返回角度.

ATanD (Value As Double) As Double
根据角度返回弧度.

BytesToString (Data() As Byte, StartOffset As Int, Length As Int, CharSet As String) As String
将给定的字节数组转换成字符串