Merge "Fix Wi-Fi QR code decode fail" into qt-dev (55f4c5eb) · Commits · e / os / android_packages_apps_Settings

src/com/android/settings/wifi/qrcode/QrCodeGenerator.java

+17 −1

Original line number	Diff line number	Diff line
		@@ -20,10 +20,16 @@ import android.graphics.Bitmap;
		import android.graphics.Color;

		import com.google.zxing.BarcodeFormat;
		import com.google.zxing.EncodeHintType;
		import com.google.zxing.MultiFormatWriter;
		import com.google.zxing.WriterException;
		import com.google.zxing.common.BitMatrix;

		import java.nio.charset.CharsetEncoder;
		import java.nio.charset.StandardCharsets;
		import java.util.HashMap;
		import java.util.Map;

		public final class QrCodeGenerator {
		/**
		* Generates a barcode image with {@code contents}.
		@@ -34,8 +40,13 @@ public final class QrCodeGenerator {
		*/
		public static Bitmap encodeQrCode(String contents, int size)
		throws WriterException, IllegalArgumentException {
		final Map<EncodeHintType, Object> hints = new HashMap<>();
		if (!isIso88591(contents)) {
		hints.put(EncodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name());
		}

		final BitMatrix qrBits = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE,
		size, size);
		size, size, hints);
		final Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.RGB_565);
		for (int x = 0; x < size; x++) {
		for (int y = 0; y < size; y++) {
		@@ -44,4 +55,9 @@ public final class QrCodeGenerator {
		}
		return bitmap;
		}

		private static boolean isIso88591(String contents) {
		CharsetEncoder encoder = StandardCharsets.ISO_8859_1.newEncoder();
		return encoder.canEncode(contents);
		}
		}

+19 −0

Original line number	Diff line number	Diff line
		@@ -128,4 +128,23 @@ public class QrCameraTest {

		assertThat(mQrCode).isEqualTo(googleUrl);
		}

		@Test
		public void testDecode_unicodePictureCaptured_QrCodeCorrectValue() {
		final String unicodeTest = "中文測試";

		try {
		final Bitmap bmp = QrCodeGenerator.encodeQrCode(unicodeTest, 320);
		final int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
		bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
		LuminanceSource source = new RGBLuminanceSource(bmp.getWidth(), bmp.getHeight(),
		intArray);
		final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
		mCamera.decodeImage(bitmap);
		bmp.recycle();
		} catch (WriterException e) {
		}

		assertThat(mQrCode).isEqualTo(unicodeTest);
		}
		}