【发布时间】：2016-08-17 06:37:42
【问题描述】：
我创建了带有导航视图的抽屉。我有我正在调用其他活动的导航项。
问题是当我单击导航项时，其他活动启动，如果我回到主活动并打开抽屉，则单击的导航项的标题消失，只有我可以看到该项目的图标。
代码：
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setNavigationIcon(R.drawable.menu_icon);
setSupportActionBar(toolbar);
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, mDrawer , toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
mDrawer .addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
navigationView.setItemIconTintList(null);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_list) {
startActivity(new Intent(MainActivity.this, LaunchVenueServiceActivity.class));
// Handle the camera action
}
else if (id == R.id.nav_dashboard) {
startActivity(new Intent(MainActivity.this, MainActivity.class));
}
else if (id == R.id.nav_config)
{
startActivity(new Intent(MainActivity.this,LaunchYourServiceStep2.class));
}
else if (id == R.id.nav_chat) {
} else if (id == R.id.nav_notes) {
startActivity(new Intent(MainActivity.this,NotesActivity.class));
} else if (id == R.id.nav_user_guide) {
}
else if(id == R.id.nav_log_out)
{
SharedPreferences.Editor editor = getSharedPreferences("username",MODE_PRIVATE).edit();
editor.remove("UserUsername");
editor.commit();
Intent intent1 = new Intent(MainActivity.this,LoginActivity.class);
intent1.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
intent1.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
finish();
startActivity(intent1);
}
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawer.closeDrawer(GravityCompat.START);
return true;
}
}
这可能是什么原因？有人可以帮忙吗？谢谢。。
【问题讨论】：
-
这可能与导航项的选定颜色有关。要检查这一点，请更改导航抽屉的背景颜色。