將參數從Activity.onCreate傳遞到其他方法

Question

我目前在學習Java，並且是Android的新手。下面是我的onCreate方法，在它的最後我有兩個EditText字段，passT（純文本）和keyT（加密密鑰）。我想將這兩個參數作爲參數傳遞給我的加密方法（也在下面），並檢索結果並將其設置爲密碼EditText。

我想將該值設置爲用戶將輸入的電子郵件地址（emailT，當前沒有設置爲EditText的字段）。

public class ScreenNext extends Activity { 

    int key = 0; 
    static char ch; 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_screen_next) 

     EditText emailT;//Import EditTexts (Key and Email) 
     Button send = (Button) findViewById(R.id.bSend);//Import button1 (Send) 
     final EditText passT = (EditText) findViewById(R.id.etTogg);//passT variable for Password Text for EditText field 
     final EditText keyT = (EditText) findViewById(R.id.etKey); 
     final EditText passT = (EditText) findViewById(R.id.etTogg);//passT variable for Password Text for EditText field 

     send.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       String keyText = keyT.getText().toString(); 
       String passText = passT.getText().toString(); 
      } 

     }); 

    }//End onCreate 
    ... 
} 

我的加密方法（包括他人的情況下，他們需要爲我的解決方案來觀察）：

public static String message(String choice, String subKey, String message) { 
    int Option = Integer.parseInt(choice);//Must pareseInt 
    int key = Integer.parseInt(subKey); 
    message = message.toLowerCase(); 

    //If the key is 26, prompt the user to change the key 

    if (key % 26 == 0) { 

     //Toast.makeText(getApplicationContext(), "You can't use a modulus of 26 as a key", Toast.LENGTH_LONG).show(); 

    } 

    ScreenNext subcipher_1 = null; 
    String CipherTxt = subcipher_1.encrypt(message, key); 
    return CipherTxt; 
} 

// Message prompt method finished, now we create the method that has the 
// encrypting algorithms 

public static String encrypt(String Txt, int key) { 

    //local var cipherText of type string is init empty 
    String CipherTxt = "";//May be able to remove this'un 
    String cText=""; 
    //enhanced for loop 
    // start at 0, go until "as long as input text" 
    for (int i = 0; i < Txt.length(); i++) { 
     //get a char from the string at index i (start at 0 work through to end of string) 
     // and store in local var extractedChar for type char 
     char extractedChar = Txt.charAt(i); 
     /* enhanced for loop 
     * start at 0, go until end of user entered cipherKeyValue 
     * either set to lowercase a or add one to the char 
     * uses the checkifz method 
     */ 
     for (int j = 0; j < key; j++) { 
      ScreenNext subcipher_1 = null; 
      if (subcipher_1.checkIfZ(extractedChar) == true) { 
       extractedChar = 'a'; 
      } else { 
       extractedChar++; 
      } 
      CipherTxt= new StringBuilder().append(extractedChar).toString(); 
     } 
     //add extracted char to builder object 
     //change object builder to string and assing to cipherText of type String 
     //create new object builder from StringBuilder class 
     cText = cText.concat(CipherTxt); 
    } 
    //Pass the cipherText value out of the method to whom ever called it 

    return cText; 
} 

Answer 1

在一流水平

public class ScreenNext extends Activity { 

    int key = 0; 
    static char ch; 
    String keyText = null; 
    String passText = null; 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     // .... 
     send.setOnClickListener(new OnClickListener() { 
      public void onClick(View v) { 
       keyText = keyT.getText().toString(); 
       passText = passT.getText().toString(); 
      } 
     }); 
     // ... 
    } 
    // ... 
}