[Android Studio] ถามเรื่อง Error นี้หน่อยครับ หรือพอมีวิธีสั่งปิดหน้า layout หน่อยครับ

package com.example.namwanta.midtermproject;

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.util.Base64;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.Spinner;
import android.widget.Toast;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Hashtable;
import java.util.Map;

public class Addpromotion extends AppCompatActivity implements LocationListener {

    protected LocationManager locationManager;
    protected LocationListener locationListener;


    private Button btHome, btLogout, btMenu, btProfile;
    private Button buttonChoose;
    private Button buttonUpload;
    private Button btnStart;
    private Button btnEnd;

    private ImageView imageView;

    private EditText editTextName;
    private EditText editTextDetail;
    private EditText editTextStart;
    private EditText editTextEnd;

    private RadioButton rCustomer;
    private RadioButton rOwner;

    private Spinner spin1;

    private String memberID = "";
    private String StatusMember = "";
    private Double Latitude;
    private Double Longitude;


    private int mYear;
    private int mMonth;
    private int mDay;
    private int i = 0;

    static final int DATE_DIALOG_ID = 0;

    private Bitmap bitmap;

    private int PICK_IMAGE_REQUEST = 1;

    private String UPLOAD_URL = "http://202.28.94.32/Photoupload/upload2.php";

    private String KEY_IMAGE = "image";
    private String KEY_NAME = "name";
    private String KEY_DETAIL = "detail";
    private String KEY_START = "start";
    private String KEY_END = "end";
    private String KEY_Status = "status";
    private String KEY_Type = "type";
    private String KEY_Lat = "latitude";
    private String KEY_Long = "longitude";
    private String KEY_MemberID = "memberid";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_addpromotion);

        spin1 = (Spinner) findViewById(R.id.spinner1);

        btHome = (Button) findViewById(R.id.btHome);
        btLogout = (Button) findViewById(R.id.btLogout);
        btMenu = (Button) findViewById(R.id.btMenu);
        btProfile = (Button) findViewById(R.id.btProfile);
        buttonChoose = (Button) findViewById(R.id.btChoose);
        buttonUpload = (Button) findViewById(R.id.btAddpro);
        btnStart = (Button) findViewById(R.id.btnStart);
        btnEnd = (Button) findViewById(R.id.btnEnd);

        editTextName = (EditText) findViewById(R.id.etName);
        editTextDetail = (EditText) findViewById(R.id.etDetail);
        editTextStart = (EditText) findViewById(R.id.etStart);
        editTextEnd = (EditText) findViewById(R.id.etEnd);

        rCustomer = (RadioButton) findViewById(R.id.radioCustomer);
        rOwner = (RadioButton) findViewById(R.id.radioOwner);


        imageView = (ImageView) findViewById(R.id.imageView);
        // Permission StrictMode
        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }
        //Get Session Login
        final UserHelper usrHelper = new UserHelper(this);

        //Get Login Status
        if (!usrHelper.getLoginStatus()) {
            Intent newActivity = new Intent(Addpromotion.this, Login.class);
            startActivity(newActivity);
        }

        //Get member id from session
        memberID = usrHelper.getMemberID();

        //เงื่อนไขเมื่อกดปุ่มให้ทำอะไร
        buttonChoose.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                showFileChooser();
            }
        });
        buttonUpload.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                upload();
                if (rCustomer.isChecked()) {
                    StatusMember = "Customer";
                } else if (rOwner.isChecked()) {
                    StatusMember = "ShopOwner";
                }
                Intent main = new Intent(Addpromotion.this, MainActivity.class);
                startActivity(main);
                finish();
            }
        });
        btHome.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Intent main = new Intent(Addpromotion.this, MainActivity.class);
                startActivity(main);
                finish();
            }
        });
        btLogout.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                finish();
            }
        });
        btMenu.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Intent main = new Intent(Addpromotion.this, Menu.class);
                startActivity(main);
                finish();
            }
        });
        btProfile.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Intent main = new Intent(Addpromotion.this, Profile.class);
                startActivity(main);
                finish();
            }
        });
        btnStart.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                showDialog(DATE_DIALOG_ID);
                i = 1;
            }
        });
        btnEnd.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                showDialog(DATE_DIALOG_ID);
                i = 2;
            }
        });


        // get the current date
        final Calendar c = Calendar.getInstance();
        mYear = c.get(Calendar.YEAR);
        mMonth = c.get(Calendar.MONTH);
        mDay = c.get(Calendar.DAY_OF_MONTH);

        // display the current date
        updateCurrentDate();


        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);

    }


    @Override
    public void onLocationChanged(Location location) {
        Latitude = location.getLatitude();
        Longitude = location.getLongitude();
    }

    @Override
    public void onProviderDisabled(String provider) {
        // Log.d("Latitude","disable");
    }

    @Override
    public void onProviderEnabled(String provider) {
        // Log.d("Latitude","enable");
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // Log.d("Latitude","status");
    }

    //เปิดหน้าปัดเวลา
    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
            case DATE_DIALOG_ID:
                return new DatePickerDialog(this,
                        mDateSetListener,
                        mYear, mMonth, mDay);
        }
        return null;
    }

    // อัพเดทเวลาลงใน edittext
    private void updateCurrentDate() {
        if (i == 0) {
            editTextStart.setText(
                    new StringBuilder()
                            // Month is 0 based so add 1
                            .append(mYear).append("-")
                            .append(mMonth + 1).append("-")
                            .append(mDay).append(""));
            editTextEnd.setText(
                    new StringBuilder()
                            // Month is 0 based so add 1
                            .append(mYear).append("-")
                            .append(mMonth + 1).append("-")
                            .append(mDay).append(""));
        }
        if (i == 1) {
            editTextStart.setText(
                    new StringBuilder()
                            // Month is 0 based so add 1
                            .append(mYear).append("-")
                            .append(mMonth + 1).append("-")
                            .append(mDay).append(""));
        }
        if (i == 2) {
            editTextEnd.setText(
                    new StringBuilder()
                            // Month is 0 based so add 1
                            .append(mYear).append("-")
                            .append(mMonth + 1).append("-")
                            .append(mDay).append(""));
        }

    }

    //หน้าปัดเวลา
    private DatePickerDialog.OnDateSetListener mDateSetListener =
            new DatePickerDialog.OnDateSetListener() {

                public void onDateSet(DatePicker view, int year,
                                      int monthOfYear, int dayOfMonth) {
                    mYear = year;
                    mMonth = monthOfYear;
                    mDay = dayOfMonth;
                    updateCurrentDate();
                }
            };

    //บีบรูป
    public String getStringImage(Bitmap bmp) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        byte[] imageBytes = baos.toByteArray();
        String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
        return encodedImage;
    }

    //เซฟไฟล์ไปmysql
    private void upload() {
        //Showing the progress dialog
        final ProgressDialog loading = ProgressDialog.show(this, "Uploading...", "Please wait...", false, false);
        StringRequest stringRequest = new StringRequest(Request.Method.POST, UPLOAD_URL,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String s) {
                        //Disimissing the progress dialog
                        loading.dismiss();
                        //Showing toast message of the response
                        Toast.makeText(Addpromotion.this, s, Toast.LENGTH_LONG).show();
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError volleyError) {
                        //Dismissing the progress dialog
                        loading.dismiss();

                        //Showing toast
                        Toast.makeText(Addpromotion.this, volleyError.getMessage().toString(), Toast.LENGTH_LONG).show();
                    }
                })
                //ส่งค่าไปphp
        {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                //Converting Bitmap to String
                String image = getStringImage(bitmap);

                //Getting Image Name
                String name = editTextName.getText().toString().trim();
                String detail = editTextDetail.getText().toString().trim();
                String start = editTextStart.getText().toString().trim();
                String end = editTextEnd.getText().toString().trim();
                String status = StatusMember;
                String type = String.valueOf(spin1.getSelectedItem());
                String latitude = Latitude.toString();
                String longitude = Longitude.toString();
                String memberid = memberID;

                //Creating parameters
                Map<String, String> params = new Hashtable<String, String>();

                //Adding parameters
                params.put(KEY_IMAGE, image);
                params.put(KEY_NAME, name);
                params.put(KEY_DETAIL, detail);
                params.put(KEY_START, start);
                params.put(KEY_END, end);
                params.put(KEY_Status, status);
                params.put(KEY_Type, type);
                params.put(KEY_Lat, latitude);
                params.put(KEY_Long, longitude);
                params.put(KEY_MemberID, memberid);

                //returning parameters
                return params;
            }
        };

        //Creating a Request Queue
        RequestQueue requestQueue = Volley.newRequestQueue(this);

        //Adding request to the queue
        requestQueue.add(stringRequest);

    }

    //โชว์รูปในอัลบั้ม
    private void showFileChooser() {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
            Uri filePath = data.getData();
            try {
                //Getting the Bitmap from Gallery
                bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
                //Setting the Bitmap to ImageView
                imageView.setImageBitmap(bitmap);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

}