android 没报错闪退,新手学习Android Studio真机运行闪退，没有报错，求大佬

按照书上写的一个登录欢迎界面，但是真机调试会闪退

WelcomeActivity.java代码

import android.content.Intent;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.TextView;

import com.easybooks.android.loginpage.MainActivity;

import com.easybooks.android.loginpage.R;

public class WelcomeActivity extends AppCompatActivity {

private TextView myWelcome;

private TextView myTime;

private String name,pass;

private int resultCode;

@Override

protected void onCreate(Bundle savedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.welcome);

findViews();

showWelcome();

}

private void findViews(){

myWelcome= (TextView)findViewById(R.id.myLabelWelcome);

myTime &