Question

以下是我的方法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，密码已正确存储在变量changedPassword中，并且正确传递给confirmPassword(changedPassword)。

但是在方法confirmPassword()中，变量confirm

后，变量final Editable confirm = confirmPassword.getText();为空

发生了什么事？我在这里失踪了什么？我看不到它的东西，它必须是“愚蠢的”。请帮忙吗？ THX

Answer 1

使用Editable.toString 返回一个字符串，该字符串的顺序与此顺序相同。如：

第一个选项：

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

第二个选项：

从Editable获取password对象：

      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中的EditText中确认密码为空

2 个答案: