添加扫码相关;

app/build.gradle

@@ -81,5 +81,6 @@ dependencies {
     compile 'com.github.ybq:Android-SpinKit:1.1.0'
     compile 'com.youth.banner:banner:1.4.10'
     compile 'cn.jzvd:jiaozivideoplayer:6.0.0'
+    compile 'me.dm7.barcodescanner:zxing:1.9.8'
     compile(name: 'zx_print_library-debug', ext: 'aar')
 }

app/src/main/AndroidManifest.xml

@@ -6,6 +6,8 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.SEND_SMS" />
 
+    <uses-permission android:name="android.permission.CAMERA" />
+
     <application
         android:name=".App"
         android:allowBackup="true"

app/src/main/java/com/xingdata/zzdpos/ui/store/StoreActivity.java

@@ -64,6 +64,9 @@ public class StoreActivity extends BaseActivity<StorePresenter, ActivityStoreBin
         mViewBinding.etSearch.setOnFocusChangeListener((view, b) -> {
             mPresenter.searchBarFocusChanged(b);
         });
+        mViewBinding.btnScan.setOnClickListener(view -> {
+            this.showScanFragment();
+        });
     }
 
     @Override
@@ -121,7 +124,7 @@ public class StoreActivity extends BaseActivity<StorePresenter, ActivityStoreBin
     @Override
     public void showCartDialog(Saleorder saleorder, List<Saledetail> saledetails) {
         mCartDialog.setSaleorder(saleorder).setSaledetails(saledetails).show(this);
-}
+    }
 
     @Override
     public void showMsDialog(List<Ms> mss) {
@@ -143,6 +146,11 @@ public class StoreActivity extends BaseActivity<StorePresenter, ActivityStoreBin
         if (!mSearchFragment.isAdded()) this.start(mSearchFragment);
     }
 
+    @Override
+    public void showScanFragment() {
+        this.start(mScanFragment);
+    }
+
     @Override
     public void resetSearchBar() {
         mViewBinding.etSearch.setText("");

app/src/main/java/com/xingdata/zzdpos/ui/store/StoreContract.java

@@ -102,6 +102,11 @@ interface StoreContract {
          */
         void showSearchFragment();
 
+        /**
+         * 显示扫码页面
+         */
+        void showScanFragment();
+
         /**
          * 重置搜索栏
          */

app/src/main/java/com/xingdata/zzdpos/ui/store/fragment/ScanFragment.java

 package com.xingdata.zzdpos.ui.store.fragment;
 
 
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.os.Handler;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+
+import com.blankj.utilcode.util.ToastUtils;
+import com.google.zxing.Result;
 import com.xingdata.zzdpos.R;
 import com.xingdata.zzdpos.base.BaseFragment;
 import com.xingdata.zzdpos.databinding.FragmentStoreScanBinding;
 import com.xingdata.zzdpos.ui.store.StorePresenter;
 
-public class ScanFragment extends BaseFragment<StorePresenter, FragmentStoreScanBinding> {
+import me.dm7.barcodescanner.core.IViewFinder;
+import me.dm7.barcodescanner.core.ViewFinderView;
+import me.dm7.barcodescanner.zxing.ZXingScannerView;
+
+public class ScanFragment extends BaseFragment<StorePresenter, FragmentStoreScanBinding> implements ZXingScannerView.ResultHandler {
+
+    private ZXingScannerView mScannerView;
+
     @Override
     public int getLayoutId() {
         return R.layout.fragment_store_scan;
@@ -14,6 +32,90 @@ public class ScanFragment extends BaseFragment<StorePresenter, FragmentStoreScan
 
     @Override
     public void initView() {
+        mScannerView = new ZXingScannerView(mContext) {
+            @Override
+            protected IViewFinder createViewFinderView(Context context) {
+                return new CustomViewFinderView(context);
+            }
+        };
+        mViewBinding.contentFrame.addView(mScannerView);
+
+    }
+
+    @Override
+    public void handleResult(Result result) {
+
+        ToastUtils.showShort("Contents = " + result.getText() + ", Format = " + result.getBarcodeFormat().toString());
+
+        // Note:
+        // * Wait 2 seconds to resume the preview.
+        // * On older devices continuously stopping and resuming camera preview can result in freezing the app.
+        // * I don't know why this is the case but I don't have the time to figure out.
+        Handler handler = new Handler();
+        handler.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                mScannerView.resumeCameraPreview(ScanFragment.this);
+            }
+        }, 2000);
+    }
+
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        mScannerView.setResultHandler(this);
+        mScannerView.startCamera();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        mScannerView.stopCamera();
+    }
+
+    private static class CustomViewFinderView extends ViewFinderView {
+        public static final String TRADE_MARK_TEXT = "ZXing";
+        public static final int TRADE_MARK_TEXT_SIZE_SP = 40;
+        public final Paint PAINT = new Paint();
+
+        public CustomViewFinderView(Context context) {
+            super(context);
+            init();
+        }
+
+        public CustomViewFinderView(Context context, AttributeSet attrs) {
+            super(context, attrs);
+            init();
+        }
+
+        private void init() {
+            PAINT.setColor(Color.WHITE);
+            PAINT.setAntiAlias(true);
+            float textPixelSize = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
+                    TRADE_MARK_TEXT_SIZE_SP, getResources().getDisplayMetrics());
+            PAINT.setTextSize(textPixelSize);
+            setSquareViewFinder(true);
+        }
+
+        @Override
+        public void onDraw(Canvas canvas) {
+            super.onDraw(canvas);
+            drawTradeMark(canvas);
+        }
 
+        private void drawTradeMark(Canvas canvas) {
+            Rect framingRect = getFramingRect();
+            float tradeMarkTop;
+            float tradeMarkLeft;
+            if (framingRect != null) {
+                tradeMarkTop = framingRect.bottom + PAINT.getTextSize() + 10;
+                tradeMarkLeft = framingRect.left;
+            } else {
+                tradeMarkTop = 10;
+                tradeMarkLeft = canvas.getHeight() - PAINT.getTextSize() - 10;
+            }
+            canvas.drawText(TRADE_MARK_TEXT, tradeMarkLeft, tradeMarkTop, PAINT);
+        }
     }
 }

app/src/main/res/layout/fragment_scanner.xml

+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <android.support.constraint.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+        
+
+    </android.support.constraint.ConstraintLayout>
+</layout>
\ No newline at end of file

app/src/main/res/layout/fragment_store_scan.xml

@@ -3,11 +3,9 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
 
-    <android.support.design.widget.CoordinatorLayout
+    <FrameLayout
+        android:id="@+id/content_frame"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="@color/gray_zhouyu"
-        android:orientation="vertical">
+        android:layout_height="match_parent" />
 
-    </android.support.design.widget.CoordinatorLayout>
 </layout>
\ No newline at end of file