How to scan the QR code Zxing and zxing

How to scan the QR code Zxing and zxing
Dependency

Compile 'com. journeyapps: zxing-android-embedded: 3.3.0'Permission

<uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.VIBRATE" /> <uses-permission android:name="android.permission.FLASHLIGHT" />

MainActivity. java

Package com.bawei.com. myapplication; import android. content. intent; import android. OS. bundle; import android. support. v7.app. appCompatActivity; import android. view. view; import android. widget. button; import android. widget. textView; import com. google. zxing. integration. android. intentIntegrator; import com. google. zxing. integration. android. intentResult; public class MainActivity extends AppCompatActivity {priva Te Button btnClick; private TextView tvResult; @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); initView (); initEvent ();} private void initView () {btnClick = (Button) findViewById (R. id. btn_click); tvResult = (TextView) findViewById (R. id. TV _result);} private void initEvent () {btnClick. setOnClickListener (ne W View. onClickListener () {@ Override public void onClick (View v) {// if you want to use fragment to redirect to the interface, // IntentIntegrator intentIntegrator = IntentIntegrator. forsuppfrfragment (ShopFragment. this ). setCaptureActivity (CustomScanAct. class); IntentIntegrator intentIntegrator = new IntentIntegrator (MainActivity. this); intentIntegrator. setDesiredBarcodeFormats (IntentIntegrator. ALL_CODE_TYPES ). setPrompt ("add the QR code/barcode In the box, you can automatically scan ") // write the prompt. setOrientationLocked (false) // The Scanning direction is fixed. setCaptureActivity (CustomScanAct. class) // set the custom activity to CustomActivity. initiateScan (); // initialization scan});} // obtain the scan result @ Override public void onActivityResult (int requestCode, int resultCode, Intent data) {IntentResult intentResult = IntentIntegrator. parseActivityResult (requestCode, resultCode, data); if (intentResult! = Null) {if (intentResult. getContents () = null) {} else {// ScanResult is the obtained String ScanResult = intentResult. getContents (); tvResult. setText (ScanResult) ;}} else {super. onActivityResult (requestCode, resultCode, data );}}}

CustomViewfinderView. java

Package com.bawei.com. myapplication; import android. content. context; import android. graphics. canvas; import android. graphics. linearGradient; import android. graphics. rect; import android. graphics. shader; import android. util. attributeSet; import com. google. zxing. resultPoint; import com. journeyapps. barcode=. viewfinderView; import java. util. arrayList; import java. util. list;/*** Created by Wangrx on 2017/1 1/5. */public class CustomViewfinderView extends ViewfinderView {public int laserLinePosition = 0; public float [] position = new float [] {0f, 0.5f, 1f }; public int [] colors = new int [] {0x00ffffff, 0 xffffffff, 0x00ffffff}; public LinearGradient linearGradient; public CustomViewfinderView (Context context, AttributeSet attrs) {super (context, attrs);}/*** Override the draw method to draw your own scan box * @ param canvas */@ Override publi C void onDraw (Canvas canvas) {refreshSizes (); if (framingRect = null | response = null) {return;} Rect frame = framingRect; Rect previewFrame = previewFramingRect; int width = canvas. getWidth (); int height = canvas. getHeight (); // draw four corners of paint. setColor (0 xFFFFFFFF); // defines the paint brush color canvas. drawRect (frame. left, frame. top, frame. left + 70, frame. top + 10, paint); canvas. drawRect (frame. left, frame. t Op, frame. left + 10, frame. top + 70, paint); canvas. drawRect (frame. right-70, frame. top, frame. right, frame. top + 10, paint); canvas. drawRect (frame. right-10, frame. top, frame. right, frame. top + 70, paint); canvas. drawRect (frame. left, frame. bottom-10, frame. left + 70, frame. bottom, paint); canvas. drawRect (frame. left, frame. bottom-70, frame. left + 10, frame. bottom, paint); canvas. drawRect (frame. right-70, fra Me. bottom-10, frame. right, frame. bottom, paint); canvas. drawRect (frame. right-10, frame. bottom-70, frame. right, frame. bottom, paint); // Draw the exterior (I. e. outside the framing rect) darkened paint. setColor (resultBitmap! = Null? ResultColor: maskColor); canvas. drawRect (0, 0, width, frame. top, paint); canvas. drawRect (0, frame. top, frame. left, frame. bottom + 1, paint); canvas. drawRect (frame. right + 1, frame. top, width, frame. bottom + 1, paint); canvas. drawRect (0, frame. bottom + 1, width, height, paint); if (resultBitmap! = Null) {// Draw the opaque result bitmap over the scanning rectangle paint. setAlpha (CURRENT_POINT_OPACITY); canvas. drawBitmap (resultBitmap, null, frame, paint);} else {// paint. setAlpha (SCANNER_ALPHA [scannerAlpha]); // scannerAlpha = (scannerAlpha + 1) % SCANNER_ALPHA.length; int middle = frame. height ()/2 + frame. top; laserLinePosition = laserLinePosition + 5; if (laserLinePosition> frame. height () {laserLinePosition = 0;} linearGradient = new LinearGradient (frame. left + 1, frame. top + laserLinePosition, frame. right-1, frame. top + 10 + laserLinePosition, colors, position, Shader. tileMode. CLAMP); // Draw a red "laser finished" line through the middle to show decoding is active // paint. setColor (laserColor); paint. setShader (linearGradient); // draw a scanned canvas. drawRect (frame. left + 1, frame. top + laserLinePosition, frame. right-1, frame. top + 10 + laserLinePosition, paint); paint. setShader (null); float scaleX = frame. width ()/(float) previewFrame. width (); float scaleY = frame. height ()/(float) previewFrame. height (); List
 
  
CurrentPossible = possibleResultPoints; List
  
   
CurrentLast = lastPossibleResultPoints; int frameLeft = frame. left; int frameTop = frame. top; if (currentPossible. isEmpty () {lastPossibleResultPoints = null;} else {possibleResultPoints = new ArrayList <> (5); lastPossibleResultPoints = currentPossible; paint. setAlpha (CURRENT_POINT_OPACITY); paint. setColor (resultPointColor); for (ResultPoint point: currentPossible) {canvas. drawCircle (frameLeft + (Int) (point. getX () * scaleX), frameTop + (int) (point. getY () * scaleY), POINT_SIZE, paint) ;}} if (currentLast! = Null) {paint. setAlpha (CURRENT_POINT_OPACITY/2); paint. setColor (resultPointColor); float radius = POINT_SIZE/2.0f; for (ResultPoint point: currentLast) {canvas. drawCircle (frameLeft + (int) (point. getX () * scaleX), frameTop + (int) (point. getY () * scaleY), radius, paint) ;}} postInvalidateDelayed (16, frame. left, frame. top, frame. right, frame. bottom); // postInvalidate ();}}}
  
 

Activity_main.xml