103 lines
3.1 KiB
Kotlin
103 lines
3.1 KiB
Kotlin
package com.sw.inbound.utils
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import android.graphics.Bitmap
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import android.graphics.Canvas
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import android.graphics.Color
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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.WriterException
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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 com.google.zxing.qrcode.decoder.ErrorCorrectionLevel
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import kotlin.apply
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import kotlin.ranges.until
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import kotlin.text.isEmpty
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/**
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* 二维码生成工具类
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*/
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object QRCodeUtil {
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/**
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* 生成二维码（默认大小）
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* @param content 二维码内容
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* @return 生成的二维码Bitmap
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*/
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@JvmOverloads
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fun generateQRCode(content: String, size: Int = 500): Bitmap? {
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return generateQRCode(content, size, Color.BLACK, Color.WHITE)
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}
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/**
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* 生成二维码（自定义颜色）
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* @param content 二维码内容
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* @param size 二维码边长（像素）
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* @param colorCode 二维码颜色
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* @param backgroundColor 背景颜色
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* @return 生成的二维码Bitmap
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*/
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fun generateQRCode(
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content: String,
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size: Int,
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colorCode: Int,
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backgroundColor: Int
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): Bitmap? {
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if (content.isEmpty()) {
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return null
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}
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return try {
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val hints = mutableMapOf<EncodeHintType, Any>().apply {
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put(EncodeHintType.CHARACTER_SET, "UTF-8")
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put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H) // 纠错级别
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put(EncodeHintType.MARGIN, 1) // 边距
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}
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val bitMatrix = QRCodeWriter().encode(
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content,
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BarcodeFormat.QR_CODE,
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size,
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size,
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hints
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)
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val pixels = IntArray(size * size).apply {
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for (y in 0 until size) {
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for (x in 0 until size) {
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this[y * size + x] = if (bitMatrix.get(x, y)) colorCode else backgroundColor
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}
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}
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}
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Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888).apply {
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setPixels(pixels, 0, size, 0, 0, size, size)
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}
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} catch (e: WriterException) {
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e.printStackTrace()
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null
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}
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}
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/**
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* 生成带Logo的二维码
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* @param content 二维码内容
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* @param size 二维码边长（像素）
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* @param logo Logo Bitmap
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* @return 带Logo的二维码Bitmap
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*/
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fun generateQRCodeWithLogo(content: String, size: Int, logo: Bitmap?): Bitmap? {
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val qrCode = generateQRCode(content, size) ?: return null
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logo ?: return qrCode
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val logoSize = size / 5 // Logo大小约为二维码的1/5
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val scaledLogo = Bitmap.createScaledBitmap(logo, logoSize, logoSize, false)
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val offset = (size - logoSize) / 2
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return Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888).apply {
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val canvas = Canvas(this)
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canvas.drawBitmap(qrCode, 0f, 0f, null)
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canvas.drawBitmap(scaledLogo, offset.toFloat(), offset.toFloat(), null)
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}
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}
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} |