修复拆分需要密码的文档，错误。

app/src/main/java/com/all/pdfreader/pro/app/ui/act/PdfResultActivity.kt

@@ -38,15 +38,20 @@ class PdfResultActivity : BaseActivity() {
         private const val EXTRA_SELECTED_LIST = "extra_selected_list"
         private const val EXTRA_FILE_LIST = "extra_file_list"
         private const val EXTRA_SOURCE = "extra_source"
-        private const val EXTRA_PASSWORD = "extra_password"
+        private const val EXTRA_LOCK_UNLOCK_PASSWORD = "extra_lock_unlock_password"
         private const val EXTRA_FILE_PATH = "extra_file_path"
+        private const val EXTRA_SPLIT_PASSWORD = "extra_split_password"
 
         fun createIntentPdfSelectedPagesItem(
-            context: Context, list: ArrayList<PdfSelectedPagesItem>, source: PdfPickerSource
+            context: Context,
+            list: ArrayList<PdfSelectedPagesItem>,
+            source: PdfPickerSource,
+            password: String? = null
         ): Intent {
             return Intent(context, PdfResultActivity::class.java).apply {
                 putParcelableArrayListExtra(EXTRA_SELECTED_LIST, list)
                 putExtra(EXTRA_SOURCE, source)
+                putExtra(EXTRA_SPLIT_PASSWORD, password)
             }
         }
 
@@ -64,7 +69,7 @@ class PdfResultActivity : BaseActivity() {
         ): Intent {
             return Intent(context, PdfResultActivity::class.java).apply {
                 putExtra(EXTRA_FILE_PATH, filepath)
-                putExtra(EXTRA_PASSWORD, password)
+                putExtra(EXTRA_LOCK_UNLOCK_PASSWORD, password)
                 putExtra(EXTRA_SOURCE, source)
             }
         }
@@ -81,7 +86,7 @@ class PdfResultActivity : BaseActivity() {
     private val pdfRepository = getRepository()
     private lateinit var pdfScanner: PdfScanner
     private lateinit var filepath: String
-    private lateinit var password: String
+    private lateinit var lockAndUnlockPassword: String
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -93,7 +98,7 @@ class PdfResultActivity : BaseActivity() {
         selectedList = requireParcelableArrayList(EXTRA_SELECTED_LIST)
         inputFile = requireStringArrayList(EXTRA_FILE_LIST)
         filepath = intent.getStringExtra(EXTRA_FILE_PATH) ?: ""
-        password = intent.getStringExtra(EXTRA_PASSWORD) ?: ""
+        lockAndUnlockPassword = intent.getStringExtra(EXTRA_LOCK_UNLOCK_PASSWORD) ?: ""
         source = getSerializableOrDefault(EXTRA_SOURCE, PdfPickerSource.NONE)
         if (source == PdfPickerSource.NONE) {
             showToast(getString(R.string.pdf_loading_failed))
@@ -113,7 +118,7 @@ class PdfResultActivity : BaseActivity() {
                     return
                 }
             } else if (source == PdfPickerSource.LOCK || source == PdfPickerSource.UNLOCK) {
-                if (filepath.isEmpty() || password.isEmpty()) {
+                if (filepath.isEmpty() || lockAndUnlockPassword.isEmpty()) {
                     showToast(getString(R.string.pdf_loading_failed))
                     finish()
                     return
@@ -139,6 +144,7 @@ class PdfResultActivity : BaseActivity() {
                 binding.processingLayout.visibility = View.VISIBLE
             }
             if (source == PdfPickerSource.SPLIT) {
+                val splitPassword = intent.getStringExtra(EXTRA_SPLIT_PASSWORD) ?: ""
                 binding.progressBar.isIndeterminate = false
                 binding.progressBar.progress = 0
                 binding.progressBar.max = 100
@@ -166,7 +172,8 @@ class PdfResultActivity : BaseActivity() {
                                 binding.progressTv.text = "$percent"
                                 binding.progressBar.progress = percent
                             }
-                        })?.let { resultFile ->
+                        }, splitPassword
+                    )?.let { resultFile ->
                         val thumbnails = generateFastThumbnail(this@PdfResultActivity, resultFile)
                         val result = PdfSplitResultItem(resultFile.absolutePath, thumbnails, false)
                         pdfScanner.addNewPdfToDatabase(result.filePath, result.thumbnailPath) {
@@ -208,7 +215,7 @@ class PdfResultActivity : BaseActivity() {
             } else if (source == PdfPickerSource.LOCK) {
                 binding.congratulationsDesc.text = getString(R.string.set_password_successfully)
                 PdfSecurityUtils.setPasswordToPdfWithProgress(
-                    filepath, password, password
+                    filepath, lockAndUnlockPassword, lockAndUnlockPassword
                 ) { progress ->
                     binding.progressTv.text = "$progress"
                 }.let { it ->
@@ -220,7 +227,7 @@ class PdfResultActivity : BaseActivity() {
                 }
             } else if (source == PdfPickerSource.UNLOCK) {
                 binding.congratulationsDesc.text = getString(R.string.remove_password_successfully)
-                PdfSecurityUtils.removePasswordFromPdfWithProgress(filepath, password) { progress ->
+                PdfSecurityUtils.removePasswordFromPdfWithProgress(filepath, lockAndUnlockPassword) { progress ->
                     binding.progressTv.text = "$progress"
                 }?.let { it ->
                     val result = PdfSplitResultItem(

app/src/main/java/com/all/pdfreader/pro/app/ui/act/SplitPdfActivity.kt

@@ -34,6 +34,7 @@ class SplitPdfActivity : BaseActivity() {
 
 
     private var currentViewState: ViewState = ViewState.SPLIT_LIST
+    var currentPassword : String? = null//拆分只会选择一个文件。直接进行密码传递
 
     private enum class ViewState {
         SPLIT_LIST,     // 拆分页列表
@@ -143,7 +144,8 @@ class SplitPdfActivity : BaseActivity() {
             val intent = PdfResultActivity.createIntentPdfSelectedPagesItem(
                 this,
                 ArrayList(selectedList),
-                PdfPickerSource.SPLIT
+                PdfPickerSource.SPLIT,
+                password = currentPassword
             )
             startActivity(intent)
             finish()
@@ -169,6 +171,9 @@ class SplitPdfActivity : BaseActivity() {
     }
 
     private fun initSplitDataWithPassword(file: File, password: String? = null) {
+        if(!password.isNullOrEmpty()){
+            currentPassword = password
+        }
         lifecycleScope.launch {
             splitList.clear()
             // 先切换到 IO 线程执行删除，等待完成

app/src/main/java/com/all/pdfreader/pro/app/util/PdfUtils.kt

@@ -119,7 +119,8 @@ object PdfUtils {
         selectedPages: List<PdfPageItem>,
         outputDir: File,
         outputFileName: String,
-        onProgress: ((current: Int, total: Int) -> Unit)? = null
+        onProgress: ((current: Int, total: Int) -> Unit)? = null,
+        splitPassword: String? = null
     ): File? = withContext(Dispatchers.IO) {
 
         // 如果没有选中的页，直接返回 null
@@ -127,6 +128,7 @@ object PdfUtils {
         if (!outputDir.exists()) outputDir.mkdirs()
         val outputFile = File(outputDir, outputFileName)
         try {
+            if (splitPassword.isNullOrEmpty()) {
                 PDDocument.load(inputFile, MemoryUsageSetting.setupTempFileOnly()).use { document ->
                     PDDocument().use { newDocument ->
                         // 按页索引排序，保证顺序正确
@@ -143,6 +145,25 @@ object PdfUtils {
                         newDocument.save(outputFile)
                     }
                 }
+            } else {
+                PDDocument.load(inputFile, splitPassword, MemoryUsageSetting.setupTempFileOnly())
+                    .use { document ->
+                        PDDocument().use { newDocument ->
+                            // 按页索引排序，保证顺序正确
+                            val sortedPages = selectedPages.sortedBy { it.pageIndex }
+                            val total = sortedPages.size//总数
+                            sortedPages.forEachIndexed { index, pageItem ->
+                                // 导入原文档的页面到新文档
+                                newDocument.importPage(document.getPage(pageItem.pageIndex))
+                                // 回调进度
+                                onProgress?.invoke(index + 1, total)
+                                delay(1)
+                            }
+                            // 保存新 PDF 文件
+                            newDocument.save(outputFile)
+                        }
+                    }
+            }
             outputFile
         } catch (e: Exception) {
             e.printStackTrace()
@@ -273,7 +294,13 @@ object PdfUtils {
 
                     val pdImage = JPEGFactory.createFromImage(document, bitmap)
                     PDPageContentStream(document, page).use { contentStream ->
-                        contentStream.drawImage(pdImage, offsetX, offsetY, targetWidth, targetHeight)
+                        contentStream.drawImage(
+                            pdImage,
+                            offsetX,
+                            offsetY,
+                            targetWidth,
+                            targetHeight
+                        )
                     }
 
                     bitmap.recycle()