通过组内大佬的帮助，实现了登录后进入对应界面的功能
public class splash extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Timer timer = new Timer();
timer.schedule(timertask, 2000);
Bmob.initialize(this,"e575c228703fd6ae7b822919edc18236");
}
TimerTask timertask = new TimerTask() {
@Override
public void run() {
BmobUser currentUser = BmobUser.getCurrentUser(User.class);
//逻辑判断是否登录，登陆了进入对应用户界面
if (currentUser!=null) {
String id=currentUser.getObjectId();
BmobQuery<User> query=new BmobQuery<>();
query.getObject(id, new QueryListener<User>() {
@Override
public void done(User user, BmobException e) {
if(user.getType().equals("student")){
startActivity(new Intent(splash.this, studentinterface.class));
}
else if(user.getType().equals("teacher")){
startActivity(new Intent(splash.this,teacherinterface.class));
}
}
});
}
else {
startActivity(new Intent(splash.this, mobloging.class));
}
}
};
}