Why is only 'else' part getting executed, even if 'if' is true?

Why is only 'else' part getting executed, even if 'if' is true?

Here is my main activity:
package com.santosh.sampleapp;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
public class Main extends Activity
{
EditText password_field;
TextView tv_err;
Button login;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// the password of the app
password_field = (EditText) findViewById(R.id.password_field);
tv_err = (TextView)findViewById(R.id.tv_err);
login = (Button)findViewById(R.id.login);
final String password = password_field.getText().toString();
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
if (password.equals("password")) {
tv_err.setText("good pass");
} else {
tv_err.setText("wrong pass");
}
} catch (Exception e) {
tv_err.setText(e.toString());
}
}
});
}
}
Even if I type password at the textview, it shows me a wrong pass message.
Here is my src/layout/main.xml if it helps:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText android:id="@+id/password_field"
android:hint="@string/password_hint"
android:inputType="textPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button android:id="@+id/login"
android:text="@string/get_message"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:onClick="launchAfterPassword"
/>
<TextView android:id="@+id/tw_err"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
/>
</LinearLayout>