1、支持条形码下方显示Code。
2、优化扫条形码。 3、优化相机预览尺寸遍历策略、从而降低变形的可能性。
This commit is contained in:
jenly1314
@@ -16,19 +16,36 @@
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package com.king.zxing.util;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.support.annotation.ColorInt;
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import android.support.annotation.NonNull;
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import android.text.TextPaint;
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import android.text.TextUtils;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.DecodeHintType;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.MultiFormatWriter;
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import com.google.zxing.RGBLuminanceSource;
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import com.google.zxing.Result;
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import com.google.zxing.WriterException;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.google.zxing.qrcode.QRCodeReader;
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import com.google.zxing.qrcode.QRCodeWriter;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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import com.king.zxing.DecodeFormatManager;
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import com.king.zxing.DecodeHintManager;
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import java.util.HashMap;
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import java.util.Hashtable;
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import java.util.Map;
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import java.util.Vector;
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/**
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@@ -144,17 +161,127 @@ public class CodeUtils {
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canvas.drawBitmap(src, 0, 0, null);
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canvas.scale(scaleFactor, scaleFactor, srcWidth / 2, srcHeight / 2);
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canvas.drawBitmap(logo, (srcWidth - logoWidth) / 2, (srcHeight - logoHeight) / 2, null);
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canvas.save(Canvas.ALL_SAVE_FLAG);
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canvas.restore();
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} catch (Exception e) {
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bitmap = null;
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e.getStackTrace();
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e.printStackTrace();
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}
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return bitmap;
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}
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/**
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* 解析二维码图片
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* @param bitmapPath
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* @return
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*/
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public static String parseQRCode(String bitmapPath) {
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Map<DecodeHintType, Object> hints = new HashMap<>();
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hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
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return parseQRCode(bitmapPath,hints);
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}
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/**
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* 解析二维码图片
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* @param bitmapPath
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* @param hints
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* @return
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*/
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public static String parseQRCode(String bitmapPath, Map<DecodeHintType,?> hints){
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try {
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Result result = new QRCodeReader().decode(getBinaryBitmap(compressBitmap(bitmapPath)), hints);
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return result.getText();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 解析一维码/二维码图片
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* @param bitmapPath
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* @return
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*/
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public static String parseCode(String bitmapPath){
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Map<DecodeHintType,Object> hints = new HashMap<>();
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//添加可以解析的编码类型
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Vector<BarcodeFormat> decodeFormats = new Vector<>();
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decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
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decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
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decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
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decodeFormats.addAll(DecodeFormatManager.AZTEC_FORMATS);
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decodeFormats.addAll(DecodeFormatManager.PDF417_FORMATS);
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hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
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return parseCode(bitmapPath,hints);
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}
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/**
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* 解析一维码/二维码图片
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* @param bitmapPath
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* @param hints 解析编码类型
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* @return
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*/
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public static String parseCode(String bitmapPath, Map<DecodeHintType,Object> hints){
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try {
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MultiFormatReader reader = new MultiFormatReader();
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reader.setHints(hints);
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Result result = reader.decodeWithState(getBinaryBitmap(compressBitmap(bitmapPath)));
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return result.getText();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 压缩图片
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* @param path
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* @return
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*/
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private static Bitmap compressBitmap(String path){
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BitmapFactory.Options newOpts = new BitmapFactory.Options();
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// 开始读入图片，此时把options.inJustDecodeBounds 设回true了
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newOpts.inJustDecodeBounds = true;//获取原始图片大小
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BitmapFactory.decodeFile(path, newOpts);// 此时返回bm为空
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int w = newOpts.outWidth;
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int h = newOpts.outHeight;
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float width = 800f;
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float height = 480f;
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// 缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
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int be = 1;// be=1表示不缩放
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if (w > h && w > width) {// 如果宽度大的话根据宽度固定大小缩放
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be = (int) (newOpts.outWidth / width);
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} else if (w < h && h > height) {// 如果高度高的话根据宽度固定大小缩放
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be = (int) (newOpts.outHeight / height);
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}
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if (be <= 0)
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be = 1;
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newOpts.inSampleSize = be;// 设置缩放比例
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// 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
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newOpts.inJustDecodeBounds = false;
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return BitmapFactory.decodeFile(path, newOpts);
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}
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/**
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* 获取二进制图片
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* @param bitmap
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* @return
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*/
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private static BinaryBitmap getBinaryBitmap(@NonNull Bitmap bitmap){
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int width = bitmap.getWidth();
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int height = bitmap.getHeight();
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int[] pixels = new int[width * height];
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bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
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RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
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//得到二进制图片
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return new BinaryBitmap(new HybridBinarizer(source));
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}
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/**
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* 生成条形码
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* @param content
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@@ -167,6 +294,7 @@ public class CodeUtils {
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return createBarCode(content,format,desiredWidth,desiredHeight,null);
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}
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/**
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* 生成条形码
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* @param content
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@@ -176,7 +304,37 @@ public class CodeUtils {
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* @param hints
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* @return
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*/
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public static Bitmap createBarCode(String content,BarcodeFormat format, int desiredWidth, int desiredHeight,Map<EncodeHintType,?> hints) {
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public static Bitmap createBarCode(String content, BarcodeFormat format, int desiredWidth, int desiredHeight, Map<EncodeHintType,?> hints) {
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return createBarCode(content,format,desiredWidth,desiredHeight,hints,false,40,Color.BLACK);
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}
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/**
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* 生成条形码
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* @param content
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* @param format
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* @param desiredWidth
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* @param desiredHeight
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* @param hints
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* @param isShowText
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* @return
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*/
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public static Bitmap createBarCode(String content, BarcodeFormat format, int desiredWidth, int desiredHeight, Map<EncodeHintType,?> hints, boolean isShowText) {
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return createBarCode(content,format,desiredWidth,desiredHeight,hints,isShowText,40,Color.BLACK);
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}
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/**
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* 生成条形码
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* @param content
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* @param format
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* @param desiredWidth
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* @param desiredHeight
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* @param hints
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* @param isShowText
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* @param textSize
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* @param textColor
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* @return
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*/
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public static Bitmap createBarCode(String content,BarcodeFormat format, int desiredWidth, int desiredHeight,Map<EncodeHintType,?> hints,boolean isShowText,int textSize,@ColorInt int textColor) {
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if(TextUtils.isEmpty(content)){
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return null;
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}
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@@ -201,6 +359,9 @@ public class CodeUtils {
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Bitmap bitmap = Bitmap.createBitmap(width, height,
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Bitmap.Config.ARGB_8888);
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bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
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if(isShowText){
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return addCode(bitmap,content,textSize,textColor,textSize/2);
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}
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return bitmap;
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} catch (WriterException e) {
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e.printStackTrace();
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@@ -208,4 +369,48 @@ public class CodeUtils {
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return null;
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}
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/**
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* 条形码下面添加文本信息
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* @param src
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* @param code
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* @param textSize
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* @param textColor
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* @return
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*/
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private static Bitmap addCode(Bitmap src,String code,int textSize,@ColorInt int textColor,int offset) {
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if (src == null) {
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return null;
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}
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if (TextUtils.isEmpty(code)) {
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return src;
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}
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//获取图片的宽高
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int srcWidth = src.getWidth();
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int srcHeight = src.getHeight();
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if (srcWidth <= 0 || srcHeight <= 0) {
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return null;
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}
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Bitmap bitmap = Bitmap.createBitmap(srcWidth, srcHeight + textSize + offset * 2, Bitmap.Config.ARGB_8888);
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try {
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Canvas canvas = new Canvas(bitmap);
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canvas.drawBitmap(src, 0, 0, null);
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TextPaint paint = new TextPaint();
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paint.setTextSize(textSize);
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paint.setColor(textColor);
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paint.setTextAlign(Paint.Align.CENTER);
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canvas.drawText(code,srcWidth/2,srcHeight + textSize /2 + offset,paint);
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canvas.save(Canvas.ALL_SAVE_FLAG);
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canvas.restore();
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} catch (Exception e) {
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bitmap = null;
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e.printStackTrace();
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}
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return bitmap;
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}
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}
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