为什么死code警告 [英] Why Dead code warning
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问题描述
我在这个位置上死code警告:
如果(电子邮件==+ email.getText()。的toString()+){
Toast.makeText(getApplicationContext(),EMAIL_ID已经可用,Toast.LENGTH_SHORT).show();
}
谁能帮助?
解决方案
如果(电子邮件==+ email.getText()。的toString()+)
块引用>电子邮件永远不可能等于+ email.getText()。的toString()+
您可能想写
如果(电子邮件== email.getText()。的toString())
,你应该使用平等法比较字符串:
如果(电子邮件.equals(email.getText()。的toString()))
您将如何用Java 此处一个比较字符串更多的信息>
I have dead code warning at this position:
if("Email" == "+email.getText().toString()+"){ Toast.makeText(getApplicationContext(), "email_id already available ", Toast.LENGTH_SHORT).show(); }
Can anyone help?
解决方案if("Email" == "+email.getText().toString()+")
"Email" can never be equal to "+email.getText().toString()+"
You probably wanted to write
if("Email" == email.getText().toString())
and you should use the equal-Method to compare Strings:
if("Email".equals(email.getText().toString()))
You'll find more informations about comparing Strings in Java HERE
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