AddProduct

package com.rohim.otrust.scanner_app;

import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import com.rohim.otrust.scanner_app.StartMenu.ProductData;

import java.math.BigDecimal;

public class AddProduct extends AppCompatActivity implements View.OnClickListener {

    private static final int REQUEST_BARCODE        = 0;
    private static final ProductData mProductData   = new ProductData();
    EditText mBarcodeEdit;
    EditText mFormatEdit;
    EditText mTitleEdit;
    EditText mPriceEdit;
    private Button mScanButton;
    private Button mAddButton;
    ProductDatabase mProductDb;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_product);
        mProductDb      = new ProductDatabase(this);

        mBarcodeEdit    = (EditText) findViewById(R.id.et_barcode);
        mFormatEdit     = (EditText) findViewById(R.id.et_format);
        mTitleEdit      = (EditText) findViewById(R.id.et_title);
        mPriceEdit      = (EditText) findViewById(R.id.et_price);

        mScanButton     = (Button) findViewById(R.id.btn_scanbar);
        mScanButton.setOnClickListener(this);

        mAddButton      = (Button) findViewById(R.id.btn_addproduct);
        mAddButton.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.btn_scanbar:
                Intent intent = new Intent("com.google.zxing.client.android.SCAN");
                intent.putExtra("com.google.zxing.client.android.SCAN.SCAN_MODE", "QR_CODE_MODE");
                startActivityForResult(intent, REQUEST_BARCODE);

                //Scann dengan menampilkan kamera...
//                IntentIntegrator scanIntegrator = new IntentIntegrator(AddProduct.this);
//                scanIntegrator.initiateScan();


                break;

            case R.id.btn_addproduct:
                String barcode      = mBarcodeEdit.getText().toString();
                String format       = mFormatEdit.getText().toString();
                String title        = mTitleEdit.getText().toString();
                String price        = mPriceEdit.getText().toString();

                String errors       = validateFields(barcode, format, title, price);

                if (errors.length() > 0){
                    showInfoDialog(this, "Please Fix Errors", errors);
                }else {
                    mProductData.barcode    = barcode;
                    mProductData.format     = format;
                    mProductData.title      = title;
                    mProductData.Price      = new BigDecimal(price);

                    mProductDb.insert(mProductData);
                    showInfoDialog(this, "Success", "Product saved successfully");
                    resetForm();

                }
                break;

        }

    }

    private void showInfoDialog(Context context, String title, String information){
        new AlertDialog.Builder(context)
                .setMessage(information)
                .setTitle(title)
                .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                }).show();
    }

    private void resetForm(){
        mBarcodeEdit.getText().clear();
        mFormatEdit.getText().clear();
        mTitleEdit.getText().clear();
        mPriceEdit.getText().clear();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent intent) {

        if (requestCode == REQUEST_BARCODE){
            if (resultCode == RESULT_OK){
                String barcode  = intent.getStringExtra("SCAN_RESULT");
                mBarcodeEdit.setText(barcode);

                String format   = intent.getStringExtra("SCAN_RESULT_FORMAT");
                mFormatEdit.setText(format);
//
//                Intent result   = new Intent(this.getApplicationContext(), Result.class);
//                Bundle b        = new Bundle();
//
//                b.putString("barcode", barcode);
//                intent.putExtras(b);
//                startActivityForResult(result, REQUEST_BARCODE);

            }else if (resultCode == RESULT_CANCELED){
                finish();
            }
        }
    }

    private static String validateFields(String barcode, String format, String title, String price){
        StringBuilder errors    = new StringBuilder();
        if (barcode.matches("^\\s*$")) {
            errors.append("Barcode required\n");
        }

        if (format.matches("^\\s*$")) {
            errors.append("Format required\n");
        }

        if (title.matches("^\\s*$")) {
            errors.append("Title required\n");
        }

        if (!price.matches("^-?\\d+(.\\d+)?$")) {
            errors.append("Need numeric price\n");
        }

        return errors.toString();

    }
}