app intent is not null on launch

Question

On app launch intent is not null. I don't know why

public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener{

/**
 * Views
 */
private ListView listView;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);



Bundle bundle = getIntent().getExtras();
     if (bundle == null)
        Log.d("***DEBUG****", "Intent was null");
    else
        Log.d("**** DEBUG ***", "Intent not null");

Close and reopen my application throw that intent is not null: D/***DEBUG****: Intent not null

Answer 1

通过添加 if(getIntent().getStringExtra("type")==null) 解决了我的问题