...

app/src/main/java/com/base/scanqrclear/ui/exportpdf/ExportPdfActivity.kt

@@ -95,7 +95,7 @@ class ExportPdfActivity : BaseActivity<ActivityExportPdfBinding>(ActivityExportP
                 binding.tvQr.text = content
                 qrStringArray = content.split("\n").toTypedArray()
 
-                generateQRCode()
+                generateQRCode(0.4f, 3.0f)
             }
 
             KEY_PRODUCT -> {
@@ -116,12 +116,12 @@ class ExportPdfActivity : BaseActivity<ActivityExportPdfBinding>(ActivityExportP
     }
 
 
-    fun generateQRCode() {
+    fun generateQRCode(scale: Float = 0.5f, imageYRate: Float = 2f) {
         Thread {
             val bitmap = generateQRCode(qrString, 735, 735, 5)
             runOnUiThread { binding.ivQr.setImageBitmap(bitmap) }
 
-            bitmap?.let { generatePdfFile(it, 0.5f, 30f) }
+            bitmap?.let { generatePdfFile(it, scale, imageYRate) }
         }.start()
     }
 
@@ -130,11 +130,11 @@ class ExportPdfActivity : BaseActivity<ActivityExportPdfBinding>(ActivityExportP
             val bitmap = QRCodeUtils.generateEAN13Barcode(qrString, 648, 255)
             runOnUiThread { binding.ivQr.setImageBitmap(bitmap) }
 
-            bitmap?.let { generatePdfFile(it, 0.5f, 50f) }
+            bitmap?.let { generatePdfFile(it, 0.5f, 2f) }
         }.start()
     }
 
-    fun generatePdfFile(bitmap: Bitmap, scale: Float = 0.5f, margin: Float = 50f) {
+    fun generatePdfFile(bitmap: Bitmap, scale: Float, imageYRate: Float) {
         val tempPdf = File(this.cacheDir, "${pdfQrName}_${System.currentTimeMillis()}.pdf")
         this.cacheDir.mkdirs()
         tempPdf.createNewFile()
@@ -146,7 +146,7 @@ class ExportPdfActivity : BaseActivity<ActivityExportPdfBinding>(ActivityExportP
             true
         )
 
-        val flag = generatePdfWithTextAndImage(tempPdf, scaledBitmap, qrType, qrStringArray, margin)
+        val flag = generatePdfWithTextAndImage(tempPdf, scaledBitmap, qrType, qrStringArray, imageYRate)
         if (flag) {
             LogEx.logDebug(TAG, "${tempPdf.absoluteFile}")
             pdfTempFile = tempPdf

app/src/main/java/com/base/scanqrclear/utils/ExportPdf.kt

@@ -15,7 +15,7 @@ object ExportPdf {
         bitmap: Bitmap,
         qrType: String,
         qrStrings: Array<String>,
-        marginVertical: Float = 50f
+        imageYRate: Float//图片水平位置比例，2水平居中，小于2偏下，大于2偏上
     ): Boolean {
         // A4纸张大小（单位：点，1英寸=72点）
         val pageWidth = 595
@@ -31,7 +31,7 @@ object ExportPdf {
 
         // 计算图片的绘制位置（水平和垂直居中）
         val imageX = (pageWidth - imageWidth) / 2f
-        val imageY = (pageHeight - imageHeight) / 2f
+        val imageY = (pageHeight - imageHeight) / imageYRate
 
         // 绘制图片
         canvas.drawBitmap(bitmap, imageX, imageY, null)
@@ -43,13 +43,15 @@ object ExportPdf {
         paint.textSize = 25f // 设置文本大小
         paint.textAlign = Paint.Align.CENTER // 文本居中对齐
 
+        //文本距离图片间隔
+        val textVerticalMargin = 30f
 
         // 计算顶部文本的绘制位置
-        val textTopY = imageY - marginVertical - paint.descent() // 图片上方50点
+        val textTopY = imageY - textVerticalMargin - paint.descent() // 图片上方50点
         canvas.drawText(qrType, pageWidth / 2f, textTopY, paint)
 
         // 计算底部文本的绘制位置
-        var currentY = imageY + imageHeight + marginVertical // 图片下方起始位置
+        var currentY = imageY + imageHeight + textVerticalMargin // 图片下方起始位置
         val lineHeight = paint.textSize + 10f // 行高（文本大小 + 间距）
 
         // 遍历字符串数组，逐行绘制