Detailed explanation of special usage cases of split() string segmentation in Android

Split() split string

1. Differentiation under different environments

Java: split string cannot be written as split ("$") / / $as the character to be split

Android: split ("[$]") / / $is the character to be split

2. Special usage -- when split() splits a string and encounters a special symbol

case analysis

The result is a

Cause analysis

|In regular expressions, it is a special symbol that has been used (".", "|", "^" and other characters). Therefore, if you want to use |, you must use \ to escape. In Java strings, \ is also a special symbol that has been used, and you also need to use \ to escape.

So it should be: String [] all = str.split ("\ \ |);

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