我试过这个片段,但它不起作用
try
{
Integer.parseInt(enteredID.getText().toString());
Log.i("enteredID value", "enterdID is numeric!!!!!!!!!!!^^^");
flag=1;
} catch (NumberFormatException e) {
flag=-1;
Log.i("enteredID value", "enterdID isn't numeric!!!!!!!!!!!^^^");
}
注意它可以接受用户名或 id 来检查值,我不希望它只接受数字!!