zxing生成二維碼

implementation 'com.google.zxing:core:3.3.1' implementation(name: 'zxing-1.0.1', ext: 'aar') implementation 'com.github.bumptech.glide:glide:4.9.0' annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'

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private Bitmap getCodeBitmap(String content, int logoId) {BitmapFactory.Options opt = new BitmapFactory.Options();opt.inPreferredConfig = Bitmap.Config.RGB_565;opt.inPurgeable = true;opt.inInputShareable = true;// 獲取資源圖片 // @SuppressLint("ResourceType") InputStream is = getResources().openRawResource(logoId); // Bitmap bitmap = QRCodeEncoder.syncEncodeQRCode(content, (int) getResources().getDimension(R.dimen.normal_200dp), getResources().getColor(R.color.color_333), null/*BitmapFactory.decodeStream(is, null, opt)*/); // Bitmap bitmap = QRCodeEncoder.syncEncodeQRCode(content, (int) getResources().getDimension(R.dimen.normal_200dp), getResources().getColor(R.color.color_333), BitmapFactory.decodeStream(is, null, opt));Bitmap bitmap = QRCodeEncoder.syncEncodeQRCode(content, (int) getResources().getDimension(R.dimen.normal_290dp), getResources().getColor(R.color.color_333));return bitmap;} Glide.with(gsewmimg).load(getCodeBitmap(response.data.skip, R.mipmap.zhifuicon)).into(gsewmimg); //gsewmimg.setImageBitmap(getCodeBitmap(response.data.skip, R.mipmap.zhifuicon));

方法二：

添加zxing依賴：

compile 'cn.yipianfengye.android:zxing-library:2.2' Bitmap mBitmap = CodeUtils.createImage("sssss77777", 400, 400, null);//無logo mBitmap = CodeUtils.createImage("ssss6666", 400, 400, BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));//logo imageView.setImageBitmap(mBitmap);

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方法一：

zxing.jar下載地址：https://pan.baidu.com/s/1_XLBnj7daO6bzP-tlRwKzg

下載下來復制到libs文件夾下，并Add As Library

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<ImageViewandroid:id="@+id/iv_qrcode"android:scaleType="fitXY"android:layout_width="150dp"android:layout_height="150dp"/>

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ImageView ivQrCode = (ImageView)findViewById(R.id.iv_qrcode);Bitmap bitmap = strTo2DCode("aabbbb", 800, 800);ivQrCode.setImageBitmap(addLogo(bitmap,BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher)));//有logo// ivQrCode.setImageBitmap(bitmap);//無logo

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1、生成二維碼方法：

/*** 字符串生成二維碼** @param strEncode 要生成二維碼的字符串* @param width 要生成圖片的寬度* @param height 要生成圖片的高度* @return*/ public static Bitmap strTo2DCode(String strEncode, int width, int height) {Bitmap bitmap = null;try {BitMatrix bitMatrix = new MultiFormatWriter().encode(new String(strEncode.getBytes("UTF-8"), "iso-8859-1"), BarcodeFormat.QR_CODE, width, height);// 二維矩陣轉為一維像素數組,也就是一直橫著排了int[] pixels = new int[width * height];for (int y = 0; y < height; y++) {for (int x = 0; x < width; x++) {if (bitMatrix.get(x, y)) {pixels[y * width + x] = 0xff000000;} else {pixels[y * width + x] = 0x00000000;}}}bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);// 通過像素數組生成bitmap,具體參考apibitmap.setPixels(pixels, 0, width, 0, 0, width, height);} catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (WriterException e) {e.printStackTrace();}return bitmap; }

2、向二維碼中心添加logo方法：

/*** 在二維碼中間添加Logo圖案*/ private static Bitmap addLogo(Bitmap src, Bitmap logo) {if (src == null) {return null;}if (logo == null) {return src;}//獲取圖片的寬高int srcWidth = src.getWidth();int srcHeight = src.getHeight();int logoWidth = logo.getWidth();int logoHeight = logo.getHeight();if (srcWidth == 0 || srcHeight == 0) {return null;}if (logoWidth == 0 || logoHeight == 0) {return src;}//logo大小為二維碼整體大小的1/5float scaleFactor = srcWidth * 1.0f / 5/ logoWidth;Bitmap bitmap = Bitmap.createBitmap(srcWidth, srcHeight, Bitmap.Config.ARGB_8888);try {Canvas canvas = new Canvas(bitmap);canvas.drawBitmap(src, 0, 0, null);canvas.scale(scaleFactor, scaleFactor, srcWidth / 2, srcHeight / 2);canvas.drawBitmap(logo, (srcWidth - logoWidth) / 2, (srcHeight - logoHeight) / 2, null);canvas.save();canvas.restore();} catch (Exception e) {bitmap = null;e.getStackTrace();}return bitmap; }

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3、條形碼

添加依賴

implementation "com.google.zxing:core:3.3.1"

工具方法

public class CodeUtils {/*** 生成條形碼（不支持中文）** @param content* @return*/public static Bitmap createBarcode(String content) {try {BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.CODE_128, 3000, 700);int width = bitMatrix.getWidth();int height = bitMatrix.getHeight();int[] pixels = new int[width * height];for (int y = 0; y < height; y++) {int offset = y * width;for (int x = 0; x < width; x++) {pixels[offset + x] = bitMatrix.get(x, y) ? 0xff000000 : 0xFFFFFFFF;}}Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);bitmap.setPixels(pixels, 0, width, 0, 0, width, height);return bitmap;} catch (WriterException e) {e.printStackTrace();}return null;}/*** 生成二維碼** @param content* @return*/public static Bitmap createQrcode(String content) {Map<EncodeHintType, Object> hints = new HashMap<>();// 支持中文配置hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);try {BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, 1000, 1000, hints);int width = bitMatrix.getWidth();int height = bitMatrix.getHeight();int[] pixels = new int[width * height];for (int y = 0; y < height; y++) {int offset = y * width;for (int x = 0; x < width; x++) {pixels[offset + x] = bitMatrix.get(x, y) ? 0xff000000 : 0xFFFFFFFF;}}Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);bitmap.setPixels(pixels, 0, width, 0, 0, width, height);return bitmap;} catch (WriterException e) {e.printStackTrace();}return null;}}

調用

ImageView ivBarcode = findViewById(R.id.iv_barcode); ImageView ivQrcode = findViewById(R.id.iv_qrcode); ivBarcode.setImageBitmap(CodeUtils.createBarcode("This is a barcode"));//條形碼 ivQrcode.setImageBitmap(CodeUtils.createQrcode("This is a qrcode"));//二維碼

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