在 Android 的 AlertDialog 的 EditText 中确认密码为空

Question

我的方法如下：1，输入新密码，2，确认密码。

public void editPassword(){

    AlertDialog.Builder d = new AlertDialog.Builder(this);
    d.setTitle("New password");

    // Set up the input
    final EditText newPassword = new EditText(this);
    // Specify the type of input expected as a password
    newPassword.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
    d.setView(newPassword);

    Log.d(DEBUG_TAG1,"new password: " + newPassword.getText().toString());
    final Editable changedPassword = newPassword.getText();

    // Set up the buttons
    d.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
        @Override
        public void onClick(DialogInterface dialog, int which) {

            confirmPassword(changedPassword);
        }
    });
    d.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });

    d.show();


}
public void confirmPassword(final Editable password){
    AlertDialog.Builder d = new AlertDialog.Builder(this);
    d.setTitle("Confirm password");

    // Set up the input
    final EditText confirmPassword = new EditText(this);
    // Specify the type of input expected as a password
    confirmPassword.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
    d.setView(confirmPassword);

    Log.d(DEBUG_TAG1,"Password: " + password.toString());
    Log.d(DEBUG_TAG1,"Confirm password: " + confirmPassword.getText().toString());
    final Editable confirm = confirmPassword.getText();

    // Set up the buttons
    d.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
        @Override
        public void onClick(DialogInterface dialog, int which) {
            if(password.equals(confirm)){
                Log.d(DEBUG_TAG1,"passwords match ");
                //TODO send new password to database
            }
            else{
                //TODO dialog/toast saying "passwords don't match"
                Log.d(DEBUG_TAG1,"passwords don't match ");
                confirmPassword(password);
            }

        }
    });
    d.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });

    d.show();

}

在第一种方法editPassword()中，密码被正确地存储在变量changedPassword中，并被正确地传递给confirmPassword(changedPassword)。

然而在方法confirmPassword()中，变量confirm赋值后为空final Editable confirm = confirmPassword.getText();

发生什么事了？？我在这里错过了什么？我看不到那东西，它一定是某物 "stupid"。请问，有什么帮助吗？谢谢

Answer 1

使用 Editable.toString 其中 returns 具有与此序列相同顺序的相同字符的字符串。 如：

第一个选项：

if(password.equals(confirm.toString())){
     Log.d(DEBUG_TAG1,"passwords match "); 
  }
  else{
    ....
  }

第二个选项：

从 password 获取 Editable 对象为：

      Editable editablePassword = new SpannableStringBuilder(password);
      if(editablePassword.equals(confirm)){
         Log.d(DEBUG_TAG1,"passwords match "); 
      }
      else{
        ....
      }

Answer 2

试试这个。

    d.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
    @Override
    public void onClick(DialogInterface dialog, int which) {
        Editable confirm = confirmPassword.getText();
        if(password.equals(confirm)){
            Log.d(DEBUG_TAG1,"passwords match ");
            //TODO send new password to database
        }
        else{
            //TODO dialog/toast saying "passwords don't match"
            Log.d(DEBUG_TAG1,"passwords don't match ");
            confirmPassword(password);
        }

    }
});

在 Android 的 AlertDialog 的 EditText 中确认密码为空

Confirm password is empty in EditText in AlertDialog in Android

passwords

confirm

android

is-empty

android-edittext