Android if语句-如果字符串包含数组中的任何字符串

Question

Can you give me a hand please.

I need to do a check, to check if the userCode matches any code in my string array or if the oldUser code also matches any code from the array

String[] code = {"1111", "2222", "3333", "4444", "5555"};

String userCode;
String oldUser;

if (userCode.equals(code) || oldUser.equals(code)) {

RUN 

} else { die }

thanks

Answer 1

To achieve a simple verification you can loop through your array OR Easy way to do it

List< String > code = Arrays.asList( new String[] { "1111", "2222", "3333", "4444", "5555" } );

String userCode;
String oldUser;

if (code.contains(userCode) || code.contains(oldUser)) {

 //doStuff() 

} else { 
    return; 
}

Answer 2

尝试这个

boolean contains = Arrays.asList(arr).contains(str);

Answer 3

Loop the array and check each entry with your user values

 String[] code = {"1111", "2222", "3333", "4444", "5555"};

 for (int i = 0; i < code.length; i++) {
     if (userCode.equals(code[i]) || oldUser.equals(code[i])) {
          //do
     }
 }

Or using Arrays.asList() ,

List<String> codes = Arrays.asList("1111", "2222", "3333", "4444", "5555");

if (codes.contains(userCode) || codes.contains(oldUser)) {
          //do
}

Answer 4

Use a foreach with a boolean var

boolean isTheSame;
For(String myArrayCodes; code;) {
  if (userCode.equals(myArrayCodes) || oldUser.equals(myArrayCodes))
    isTheSame = true;
  break;
  }
}

if (isTheSame) { // usercode or oldUser is on array
 doSomething();
}
else {
}