bootlean返回true或false如何比较结果？

Question

How can I compare the bootlean to a string? I have tried to change the bootlean to a string output but I can't because of the checkemail function calls for a bootlean.

The check email states that if its a valid email...which returns "true" or "false".

 boolean sefsd = checkemails(e.getText().toString());

     if(sefsd.toString().equals("false")){ //do something}

Answer 1

if (!sefsd) {
    // sefsd == false
}

Article about if statement.
Try to learn Java before Android programming.

Answer 2

如果checkmails返回boolean类型，则执行

if (sefsd == false) { /*do something */ }