Membuat QRCode Scanner di Android Menggunakan Google Vision Api
Apr 12, 2018
Add Comment
Assalamualaikum Wr.Wb. Selamat malam, pada kesempatan kali ini Saya akan berbagi tutorial mengenai QR Code Scanner. kita akan membuat QR Code Scanner menggunakan Google Vision Api di Android. QR Code Scanner ini bisa diaplikasikan untuk login misalnya seperti login di whatsapp web dan lain-lain.
untuk membuatnya pertama-tama masukan despendency ini di module.gradle
compile 'com.google.android.gms:play-services:10.0.1'
kemudian buat sebuah button untuk membuka camera dan sebuah textview untuk menampilkan hasil scan qrcode nya:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.giviews.qrcodescanner.MainActivity">
<Button
android:id="@+id/scanbtn"
android:layout_marginTop="40dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="scan"
android:layout_centerHorizontal="true" />
<TextView
android:id="@+id/result"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/scanbtn"
android:text="RESULT"
android:textSize="25dp"
android:layout_marginTop="20dp"
android:gravity="center"/>
</RelativeLayout>
kemudian masukan kode ini di javanya:
package com.giviews.qrcodescanner;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.google.android.gms.vision.barcode.Barcode;
public class MainActivity extends AppCompatActivity {
private Button scanbtn;
private TextView result;
public static final int REQUEST_CODE = 100;
public static final int PERMISSION_REQUEST = 200;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, PERMISSION_REQUEST);
}
scanbtn = (Button) findViewById(R.id.scanbtn);
result = (TextView) findViewById(R.id.result);
scanbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), ScanActivity.class);
startActivityForResult(intent, REQUEST_CODE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
if (data != null) {
final Barcode barcode = data.getParcelableExtra("barcode");
result.post(new Runnable() {
@Override
public void run() {
result.setText(barcode.displayValue);
}
});
}
}
}
}
lalu buat activity baru dengan nama Scan Activity. dan masukan kode ini untuk xml nya:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.giviews.qrcodescanner.ScanActivity">
<SurfaceView
android:id="@+id/cameraView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
selanjutnya untuk java di ScanActivity masukan kode dibawah ini:
package com.giviews.qrcodescanner;
import android.*;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;
import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;
import java.io.IOException;
import static com.giviews.qrcodescanner.MainActivity.REQUEST_CODE;
public class ScanActivity extends AppCompatActivity {
SurfaceView cameraView;
BarcodeDetector barcode;
CameraSource cameraSource;
SurfaceHolder holder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan);
cameraView = (SurfaceView) findViewById(R.id.cameraView);
cameraView.setZOrderMediaOverlay(true);
holder = cameraView.getHolder();
barcode = new BarcodeDetector.Builder(this)
.setBarcodeFormats(Barcode.QR_CODE)
.build();
if (!barcode.isOperational()) {
Toast.makeText(getApplicationContext(), "Sorry couldnt setup the detector", Toast.LENGTH_LONG).show();
this.finish();
}
cameraSource = new CameraSource.Builder(this, barcode)
.setFacing(CameraSource.CAMERA_FACING_BACK)
.setRequestedFps(24)
.setAutoFocusEnabled(true)
.setRequestedPreviewSize(1920,1024)
.build();
cameraView.getHolder().addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
try {
if (ContextCompat.checkSelfPermission(ScanActivity.this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
cameraSource.start(cameraView.getHolder());
}
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
}
});
barcode.setProcessor(new Detector.Processor<Barcode>() {
@Override
public void release() {
}
@Override
public void receiveDetections(Detector.Detections<Barcode> detections) {
final SparseArray<Barcode> barcode = detections.getDetectedItems();
if (barcode.size() > 0) {
Intent intent = new Intent();
intent.putExtra("barcode", barcode.valueAt(0));
setResult(RESULT_OK, intent);
finish();
}
}
});
}
}
terakhir tambahkan permission untuk mengakses kamera di manifest
<uses-permission android:name="android.permission.CAMERA" />
dan tambahkan metadata di dalam application
<meta-data
android:name="com.google.android.gms.vision.DEPENDENCIES"
android:value="barcode" />
jika scan berhasil |
Selanjutnya test qr-code scannernya, untuk qr codenya anda bisa mencoba qrcode generator di web. Ok sekianlah tutorial kali ini kurang lebihnya mohon maaf jika ada yang kurang jelas silakan ditanyakan di komentar, jika artikel ini bermanfaat silakan di share
0 Response to "Membuat QRCode Scanner di Android Menggunakan Google Vision Api"
Post a Comment