ユーザ毎のドメインからQRコードを生成し、プリンターへ印刷指示を出す処理を追加しました。

app/src/main/java/com/example/childguard/QrPrintFragment.java

@@ -0,0 +1,119 @@
+package com.example.childguard;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+import androidx.print.PrintHelper;
+
+import android.util.AndroidRuntimeException;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.WriterException;
+import com.journeyapps.barcodescanner.BarcodeEncoder;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link QrPrintFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class QrPrintFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public QrPrintFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment QrPrintFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static QrPrintFragment newInstance(String param1, String param2) {
+        QrPrintFragment fragment = new QrPrintFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View view=inflater.inflate(R.layout.fragment_qr_print, container, false);
+
+        //固定のドメイン
+        String KoteiURL = "https://practicefirestore1-8808c.web.app/?id=";
+        //User毎のドメイン
+        String userURL="YKjFsZgJBlZmcyvdZ3Ap";
+        //二つのドメインを合成する
+        String AllURL=KoteiURL+userURL;
+
+        int size = 2500;
+        ImageView imageViewQrCode;
+        Bitmap QRGazou;
+        try {
+            //QRコード生成
+            BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
+            Bitmap bitmapqr = barcodeEncoder.encodeBitmap(AllURL, BarcodeFormat.QR_CODE, size, size);
+            imageViewQrCode = (ImageView) view.findViewById(R.id.qr_view);
+            imageViewQrCode.setTranslationX(1000);
+            imageViewQrCode.setTranslationY(1000);
+            imageViewQrCode.setImageBitmap(bitmapqr);
+        } catch (WriterException e) {
+            throw new AndroidRuntimeException("Barcode Error.", e);
+        }
+        //    画像合成の準備
+        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a_group_qr_sos);
+        Bitmap bitmap1 = ((BitmapDrawable) imageViewQrCode.getDrawable()).getBitmap();
+        int width = bitmap.getWidth(); // 元ファイルの幅取得
+        int height = bitmap.getHeight(); // 元ファイルの高さ取得
+        QRGazou = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+        //Canvasの準備
+        Canvas canvas = new Canvas(QRGazou);
+        //画像のサイズの調整
+        int disWidth = (width - bitmap1.getWidth()) / 2;
+        int disHeight = (int) ((height - bitmap1.getHeight()) / 1.3);
+        canvas.drawBitmap(bitmap, 0, 0, (Paint) null); // image, x座標, y座標, Paintインスタンス
+        canvas.drawBitmap(bitmap1, disWidth, disHeight, (Paint) null); // 画像合成
+        //Androidからプリンターへ印刷指示を出すサポートライブラリ
+        PrintHelper printHelper = new PrintHelper(getActivity());
+        printHelper.setColorMode(PrintHelper.COLOR_MODE_COLOR);
+        printHelper.setScaleMode(PrintHelper.SCALE_MODE_FIT);
+        printHelper.printBitmap("job_name", QRGazou);
+
+        return view;
+    }
+}