Java 我尝试使用导航抽屉在活动之间切换，而不是片段

下面是我申请的代码。我试着做这件事，但没有发现任何对我有效的东西。如果不变成碎片，我能做什么

public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.my_account) {

        } else if (id == R.id.nav_news) {

        } else if (id == R.id.nav_live) {

        } else if (id == R.id.nav_media) {

        } else if (id == R.id.nav_calendar) {

        } else if (id == R.id.nav_results) {

        } else if (id == R.id.nav_about) {

        } else if (id == R.id.nav_shop) {

        } else if (id == R.id.nav_social_media) {

        } else if (id == nav_fanzone) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

---

将您的onNavigationItemSelected（）更改为：

public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        switch(item.getItemId()){
             case R.id.my_account:
               //Do code here
              break;
             case R.id.nav_news:
               //Do code here
             break;
             case R.id.nav_live:
              //Do code here
             break;
             case R.id.nav_media:
              //Do code here
             break;
             case R.id.nav_calendar:
              //Do code here
             break;
             case R.id.nav_results:
              //Do code here
             break;
             case R.id.nav_about:
              //Do code here
             break;
             case R.id.nav_shop:
              //Do code here
             break;
             case R.id.nav_social_media:
              //Do code here
             break;
             case R.id.nav_fanzone:
              //Do code here
             break;

}

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

对于更改活动只需将此添加到所有切换案例中：

Intent intent=new Intent(your_activity.this,your_next_activity.class);
startActivity(intent);

---

谢谢你的回答，布鲁诺。当我使用导航抽屉时，我会在你的活动中放置什么？thanks@A.Nutley如果导航抽屉位于MainActivity中，则只需将您的_活动更改为MainActivity。此，您的_活动是导航抽屉的父活动。