基类及主页面登录第二次不显示

基类BaseActivity

package com.example.lll.yuekaomoni;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;

public abstract class BaseActivity extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(initContentView());
        initView();
        initData();
    }

    protected abstract void initData();

    protected abstract void initView();

    protected abstract int initContentView();
}

封面进入主页面，并且下次进入不显示

package com.example.lll.yuekaomoni;

import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends BaseActivity {

    private Button btn;
    private SharedPreferences sharedPreferences;

    @Override
    protected void initData() {
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                SharedPreferences.Editor editor = sharedPreferences.edit();
                editor.putBoolean("isZD",true);
                editor.commit();

                Intent intent = new Intent(MainActivity.this,OneActivity.class);
                startActivity(intent);
                finish();
            }
        });
    }

    @Override
    protected void initView() {
        btn =  findViewById(R.id.btn);
        sharedPreferences = getSharedPreferences("bu", MODE_PRIVATE);
        //自动登录
        boolean isZD = sharedPreferences.getBoolean("isZD", false);
        if (isZD) {
            startActivity(new Intent(MainActivity.this,OneActivity.class));
            finish();
        }
    }

    @Override
    protected int initContentView() {
        return R.layout.activity_main;
    }
}