扫码登录

compile 'com.journeyapps:zxing-android-embedded:3.5.0'

new IntentIntegrator(MainActivity.this)
                        .setCaptureActivity(MyCaptureActivity.class)     //设置自定义的CaptureActivity，在这里自定义扫描布局
                        .setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES)// 扫码的类型,可选：一维码，二维码，一/二维码
                        .setPrompt("请将二维码放入取景框\n")// 设置提示语
                        .setCameraId(0)// 选择摄像头,可使用前置或者后置
                        .setBeepEnabled(false)// 是否开启声音,扫完码之后会"哔"的一声
                        .setBarcodeImageEnabled(false)// 扫完码之后生成二维码的图片,保存扫描后的图片
                        .initiateScan();// 初始化扫码

@Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
       IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
       if(result != null) {
           if(result.getContents() == null) {
               Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
           } else {
               Intent intent = new Intent(this,SecondActivity.class);
               intent.putExtra("user","pengllrn");
               intent.putExtra("lgToken",result.getContents());
               startActivity(intent);
               //需要震动权限
               Vibrator vibrator = (Vibrator) this
                       .getSystemService(Context.VIBRATOR_SERVICE);
               vibrator.vibrate(VIBRATE_DURATION);
           }
       } else {
           super.onActivityResult(requestCode, resultCode, data);
       }
   }

public class CaptureActivity extends Activity {
    private CaptureManager capture;
    private DecoratedBarcodeView barcodeScannerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        barcodeScannerView = initializeContent();

        capture = new CaptureManager(this, barcodeScannerView);
        capture.initializeFromIntent(getIntent(), savedInstanceState);
        capture.decode();
    }

     //省略代码
}

public class DecoratedBarcodeView extends FrameLayout {
    private BarcodeView barcodeView;
    private ViewfinderView viewFinder;
    private TextView statusView;

    //省略代码
}

public class MyCaptureActivity extends Activity {
    private CaptureManager capture;
    private DecoratedBarcodeView barcodeScannerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_mycapture);
        barcodeScannerView =  (DecoratedBarcodeView) findViewById(R.id.dbv_custom);

        capture = new CaptureManager(this, barcodeScannerView);
        capture.initializeFromIntent(getIntent(), savedInstanceState);
        capture.decode();
    }
	//省略其他代码
}

public class MyFinderView extends ViewfinderView {
    protected final int maskColor;
    protected final int resultColor;
    protected final int laserColor;
    protected final int resultPointColor;

    // 扫描线移动的y
    private int scanLineTop;
    // 扫描线移动速度
    private int SCAN_VELOCITY = 10;
    //扫描线高度
    private int scanLightHeight = 30;
    // 扫描线
    Bitmap scanLight;

    public MyFinderView(Context context, AttributeSet attrs) {
        super(context, attrs);
        Resources resources = getResources();
        scanLight = BitmapFactory.decodeResource(resources, R.drawable.scan_line);

        // Get setted attributes on view
        TypedArray attributes = getContext().obtainStyledAttributes(attrs, R.styleable.zxing_finder);
        this.maskColor = attributes.getColor(R.styleable.zxing_finder_zxing_viewfinder_mask,
                resources.getColor(R.color.zxing_viewfinder_mask));
        this.resultColor = attributes.getColor(R.styleable.zxing_finder_zxing_result_view,
                resources.getColor(R.color.zxing_result_view));
        this.laserColor = attributes.getColor(R.styleable.zxing_finder_zxing_viewfinder_laser,
                resources.getColor(R.color.zxing_viewfinder_laser));
        this.resultPointColor = attributes.getColor(R.styleable.zxing_finder_zxing_possible_result_points,
                resources.getColor(R.color.zxing_possible_result_points));
    }

    @SuppressLint("DrawAllocation")
    @Override
    public void onDraw(Canvas canvas) {
        refreshSizes();
        if (framingRect == null || previewFramingRect == null) {
            return;
        }

        Rect frame = framingRect;
        Rect previewFrame = previewFramingRect;

        int width = canvas.getWidth();
        int height = canvas.getHeight();

        // 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 {
            //画边框
            drawFrameBounds(canvas,frame);
            //画扫面线
            drawScanLight(canvas,frame);

            float scaleX = frame.width() / (float) previewFrame.width();
            float scaleY = frame.height() / (float) previewFrame.height();

            List<ResultPoint> currentPossible = possibleResultPoints;
            List<ResultPoint> 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);
                }
            }

            // Request another update at the animation interval, but only repaint the laser line,
            // not the entire viewfinder mask.
            postInvalidateDelayed(ANIMATION_DELAY,
                    frame.left - POINT_SIZE,
                    frame.top - POINT_SIZE,
                    frame.right + POINT_SIZE,
                    frame.bottom + POINT_SIZE);
        }
    }

    /**
     * 绘制移动扫描线
     *
     * @param canvas
     * @param frame
     */
    private void drawScanLight(Canvas canvas, Rect frame) {
        paint.setColor(laserColor);
        paint.setAlpha(250);

        if (scanLineTop == 0 || scanLineTop + SCAN_VELOCITY >= frame.bottom) {
            scanLineTop = frame.top;
        } else {
            /*缓动动画*/
            SCAN_VELOCITY = (frame.bottom - scanLineTop) / 12;
            SCAN_VELOCITY = (int) (SCAN_VELOCITY > 20 ? Math.ceil(SCAN_VELOCITY) : 20);
            scanLineTop += SCAN_VELOCITY;
        }

        Rect scanRect = new Rect(frame.left, scanLineTop, frame.right,
                scanLineTop + scanLightHeight);
        canvas.drawBitmap(scanLight, null, scanRect, paint);
    }

    /**
     * 绘制取景框边框
     *
     * @param canvas
     * @param frame
     */
    private void drawFrameBounds(Canvas canvas, Rect frame) {

        /*扫描框的四个角*/
        paint.setColor(Color.parseColor("#ffffff"));
        paint.setStyle(Paint.Style.FILL);
        paint.setStrokeWidth(1);

        /*四个角的长度和宽度*/
        int width = frame.width();
        int corLength = (int) (width * 0.07);
        int corWidth = (int) (corLength * 0.2);


        corWidth = corWidth > 15 ? 15 : corWidth;


        /*角在线外*/
        // 左上角
        canvas.drawRect(frame.left - corWidth, frame.top, frame.left, frame.top
                + corLength, paint);
        canvas.drawRect(frame.left - corWidth, frame.top - corWidth, frame.left
                + corLength, frame.top, paint);
        // 右上角
        canvas.drawRect(frame.right, frame.top, frame.right + corWidth,
                frame.top + corLength, paint);
        canvas.drawRect(frame.right - corLength, frame.top - corWidth,
                frame.right + corWidth, frame.top, paint);
        // 左下角
        canvas.drawRect(frame.left - corWidth, frame.bottom - corLength,
                frame.left, frame.bottom, paint);
        canvas.drawRect(frame.left - corWidth, frame.bottom, frame.left
                + corLength, frame.bottom + corWidth, paint);
        // 右下角
        canvas.drawRect(frame.right, frame.bottom - corLength, frame.right
                + corWidth, frame.bottom, paint);
        canvas.drawRect(frame.right - corLength, frame.bottom, frame.right
                + corWidth, frame.bottom + corWidth, paint);
    }
}

public class SecondActivity extends AppCompatActivity {
    Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            // TODO Auto-generated method stub
            switch (msg.what) {
                case 0x2017:
                    String responseMes = (msg.obj).toString();
                    try {
                        JSONObject jobj=new JSONObject(responseMes);
                        String code=jobj.getString("code");
                        if(code.equals("10006"))
                            Toast.makeText(getApplicationContext(),"登录成功",Toast.LENGTH_SHORT).show();
                        else
                            Toast.makeText(getApplicationContext(),"登录失败："+code,Toast.LENGTH_SHORT).show();
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                    finish();
                    break;
                default:
            }
            super.handleMessage(msg);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        Button btn_sure = (Button) findViewById(R.id.btn_sure);
        Intent intent = getIntent();
        final String user = intent.getStringExtra("user");
        final String lgToken=intent.getStringExtra("lgToken");

        btn_sure.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                OkHttp okHttp=new OkHttp(getApplicationContext(),mHandler);
                RequestBody requestBody=new FormBody.Builder().add("user",user).build();
                okHttp.postDataFromInternet(lgToken,requestBody);
            }
        });
    }
}

public final int POSTOK = 0x2017;
   public OkHttp(Context context, Handler handler) {
       this.mContext = context;
       this.handler = handler;
   }

   public void postDataFromInternet(final String path, final RequestBody requestBody) {
       new Thread(new Runnable() {
           @Override
           public void run() {
               try {
                   OkHttpClient client = new OkHttpClient();
                   //用post提交键值对格式的数据
                   Request request = new Request.Builder()
                           .url(path)
                           .post(requestBody)
                           .build();
                   Response response = client.newCall(request).execute();
                   if (response.isSuccessful()) {
                       String responseData = response.body().string();
                       Message msg = new Message();
                       msg.what = POSTOK;
                       msg.obj = responseData;
                       handler.sendMessage(msg);
                   } else {
                       //TODO 错误报告
                       Message msg = new Message();
                       msg.what = WRANG;
                       handler.sendMessage(msg);
                   }
               } catch (IOException e) {
                   Message msg = new Message();
                   msg.what = EXCEPTION;
                   handler.sendMessage(msg);
                   e.printStackTrace();
               }
           }
       }).start();
   }