package com.hdl.photovoltaic.other;
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import android.graphics.Bitmap;
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import android.text.TextUtils;
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import com.dcloud.zxing2.WriterException;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.qrcode.QRCodeWriter;
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import java.util.Hashtable;
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/**
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* 公共逻辑
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*/
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public class HdlCommonLogic {
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private static volatile HdlCommonLogic sHdlCommonLogic;
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/**
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* 获取当前对象
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*
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* @return HdlCommonLogic
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*/
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public static synchronized HdlCommonLogic getInstance() {
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if (sHdlCommonLogic == null) {
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synchronized (HdlCommonLogic.class) {
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if (sHdlCommonLogic == null) {
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sHdlCommonLogic = new HdlCommonLogic();
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}
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}
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}
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return sHdlCommonLogic;
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}
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/**
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* 生成二维码
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*
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* @param content 字符串内容
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* @param width 二维码宽度
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* @param height 二维码高度
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* @param character_set 编码方式（一般使用UTF-8）
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* @param error_correction_level 容错率 L：7% M：15% Q：25% H：35%
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* @param margin 空白边距（二维码与边框的空白区域）
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* @param color_black 黑色色块
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* @param color_white 白色色块
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* @return BitMap
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*/
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public Bitmap createQRCodeBitmap(String content, int width, int height,
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String character_set, String error_correction_level,
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String margin, int color_black, int color_white) {
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// 字符串内容判空
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if (TextUtils.isEmpty(content)) {
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return null;
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}
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// 宽和高>=0
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if (width < 0 || height < 0) {
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return null;
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}
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try {
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/** 1.设置二维码相关配置 */
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Hashtable<EncodeHintType, String> hints = new Hashtable<>();
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// 字符转码格式设置
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if (!TextUtils.isEmpty(character_set)) {
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hints.put(EncodeHintType.CHARACTER_SET, character_set);
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}
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// 容错率设置
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if (!TextUtils.isEmpty(error_correction_level)) {
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hints.put(EncodeHintType.ERROR_CORRECTION, error_correction_level);
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}
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// 空白边距设置
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if (!TextUtils.isEmpty(margin)) {
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hints.put(EncodeHintType.MARGIN, margin);
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}
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/** 2.将配置参数传入到QRCodeWriter的encode方法生成BitMatrix(位矩阵)对象 */
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BitMatrix bitMatrix = new QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
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/** 3.创建像素数组,并根据BitMatrix(位矩阵)对象为数组元素赋颜色值 */
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int[] pixels = new int[width * height];
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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//bitMatrix.get(x,y)方法返回true是黑色色块，false是白色色块
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if (bitMatrix.get(x, y)) {
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pixels[y * width + x] = color_black;//黑色色块像素设置
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} else {
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pixels[y * width + x] = color_white;// 白色色块像素设置
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}
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}
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}
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/** 4.创建Bitmap对象,根据像素数组设置Bitmap每个像素点的颜色值,并返回Bitmap对象 */
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Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
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bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
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return bitmap;
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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}
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