背景：

随着移动互联网的普及以及智能终端设备的广泛应用，移动支付变得越来越便捷，通过扫描二维码代替传统的刷卡行为。那么作为开发者而言生成二维码成为了一项必备技能。

准备：

使用zxing包

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

核心代码：

package com.wangpengpro.h5test.utils;import android.graphics.Bitmap;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 com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;import java.util.HashMap;import java.util.Map;/** * @author Created by Mr.Wang on 2019/10/10 15:05. * usage: */public class CodeUtils { /** * 生成条形码（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; } /** * 生成二维码 * * @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; }}

使用：

ImageActivity.javapublic class ImageActivity extends AppCompatActivity { @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_image); ImageView ivBarcode = findViewById(R.id.iv_barcode); ImageView ivQrcode = findViewById(R.id.iv_qrcode); ivBarcode.setImageBitmap(CodeUtils.createBarcode("This is a barcode")); ivQrcode.setImageBitmap(CodeUtils.createQrcode("This is a qrcode")); }}

activity_image.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".ImageActivity"> <ImageView android:id="@+id/iv_barcode" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ImageView android:id="@+id/iv_qrcode" android:layout_width="wrap_content" android:layout_height="wrap_content" /></LinearLayout>

运行效果：

总结

以上所述是小编给大家介绍的Android生成条形码和二维码功能,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
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