无法通过settext更新textview的值

Question

我从数据库更新它的值后，我的settext不更新。但是，如果我注销并登录到我的应用程序，则会刷新settext。通过SharedPreferences获得settext的值。

公共类MySettingsActivity扩展了AppCompatActivity {

private TextView settingsDisplayName;
private TextView settingsDisplayStatus;

private User user = SharedPrefManager.getInstance(this).getUser();

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

    settingsDisplayName = (TextView) findViewById (R.id.settings_username);
    settingsDisplayStatus = (TextView) findViewById(R.id.settings_status);



    settingsChangeUsername.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String old_name = settingsDisplayName.getText().toString();
            Intent usernameIntent = new Intent(MySettingsActivity.this, UsernameActivity.class);
            usernameIntent.putExtra("user_name",old_name );
            startActivity(usernameIntent);

        }
    });


}

@Override
protected void onStart() {


    MySettingsActivity.this.runOnUiThread(new Runnable() {
        @Override
        public void run() {
            settingsDisplayName.setText(user.getName());

            settingsDisplayStatus.setText(user.getEmail());
        }
    });
    super.onStart();
}

}