【修复&优化】1.修复部分pdf加载与显示逻辑问题。2.优化部分pdf显示加载逻辑。3.尝试修复内存溢出问题。

app/proguard-rules.pro

@@ -35,3 +35,18 @@
     java.lang.String getId();
     boolean isLimitAdTrackingEnabled();
 }
+
+
+# 删除控制台日志打印
+-assumenosideeffects class android.util.Log {
+    public static boolean isLoggable(java.lang.String, int);
+    public static int v(...);
+    public static int i(...);
+    public static int w(...);
+    public static int d(...);
+    public static int e(...);
+}
+-assumenosideeffects class java.io.PrintStream {
+    public *** println(...);
+    public *** print(...);
+}

app/src/main/java/com/base/pdfviewerscannerwhite/ui/document/pdf/PdfActivity.kt

@@ -32,7 +32,6 @@ import com.base.pdfviewerscannerwhite.ads.admob.AdmobInterstitialUtils
 import com.base.pdfviewerscannerwhite.ads.admob.AdmobNativeUtils
 import com.base.pdfviewerscannerwhite.bean.ConstObject.DO_SAVE_PDF
 import com.base.pdfviewerscannerwhite.bean.ConstObject.haveGuideGesture
-import com.base.pdfviewerscannerwhite.bean.PdfPageBean
 import com.base.pdfviewerscannerwhite.databinding.ActivityPdfBinding
 import com.base.pdfviewerscannerwhite.helper.BaseActivity
 import com.base.pdfviewerscannerwhite.helper.MyApplication
@@ -86,6 +85,7 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
         super.onDestroy()
         muPDFCore?.onDestroy()
         AdmobNativeUtils.onDestroy()
+        pdfPageAdapter.release()
     }
 
 
@@ -108,7 +108,7 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
         val file = File(path)
         binding.tvPdfName.text = file.name
 
-        pdfPresenter = PdfPresenter(this, this)
+        pdfPresenter = PdfPresenter(this)
 
         initAdapter()
         changeNormalUI()
@@ -127,7 +127,9 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
                 pdfPresenter.password = pwd
                 pdfPageAdapter.setPassword(pwd)
                 createPdfUI()
-                muPDFCore?.countPages()?.let { pdfPresenter.iniPdfPage(it) }
+                muPDFCore?.countPages()?.let {
+                    //pdfPresenter.iniPdfPage(it)
+                }
                 SpStringUtils.addSpString(LAST_VIEW_KEY, "${path}_/_${System.currentTimeMillis()}")
             } else {
                 toast("unknown error")
@@ -135,7 +137,9 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
             }
         } else {
             createPdfUI()
-            muPDFCore?.countPages()?.let { pdfPresenter.iniPdfPage(it) }
+            muPDFCore?.countPages()?.let {
+                //pdfPresenter.iniPdfPage(it)
+            }
             SpStringUtils.addSpString(LAST_VIEW_KEY, "${path}_/_${System.currentTimeMillis()}")
         }
 
@@ -347,7 +351,9 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
     }
 
     private fun initAdapter() {
-        pdfPageAdapter = PdfPagerAdapter(path, uri)
+        pdfPageAdapter = PdfPagerAdapter(path, uri){
+            iniSetVerticalSeekbar(it)
+        }
         pdfPageAdapter.clickAction = { pageIndex ->
             binding.mupdfReaderView.displayedViewIndex = pageIndex
         }
@@ -361,7 +367,8 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
             isShowTopBottomLayout = false
 
             hideKeyboard(binding.editSearch)
-            val topAnim: Animation = TranslateAnimation(0f, 0f, 0f, -binding.vAnimatorTop.height.toFloat())
+            val topAnim: Animation =
+                TranslateAnimation(0f, 0f, 0f, -binding.vAnimatorTop.height.toFloat())
             topAnim.setDuration(200)
             topAnim.setAnimationListener(object : Animation.AnimationListener {
                 override fun onAnimationStart(animation: Animation) {}
@@ -372,7 +379,8 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
             })
             binding.vAnimatorTop.startAnimation(topAnim)
 
-            val bottomAnim: Animation = TranslateAnimation(0f, 0f, 0f, binding.vAnimatorBottom.height.toFloat())
+            val bottomAnim: Animation =
+                TranslateAnimation(0f, 0f, 0f, binding.vAnimatorBottom.height.toFloat())
             bottomAnim.duration = 200
             bottomAnim.setAnimationListener(object : Animation.AnimationListener {
                 override fun onAnimationStart(animation: Animation) {}
@@ -392,7 +400,8 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
         if (!isShowTopBottomLayout) {
             isShowTopBottomLayout = true
 
-            val topAnim: Animation = TranslateAnimation(0f, 0f, -binding.vAnimatorTop.height.toFloat(), 0f)
+            val topAnim: Animation =
+                TranslateAnimation(0f, 0f, -binding.vAnimatorTop.height.toFloat(), 0f)
             topAnim.setDuration(200)
             topAnim.setAnimationListener(object : Animation.AnimationListener {
                 override fun onAnimationStart(animation: Animation) {
@@ -405,7 +414,8 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
             })
             binding.vAnimatorTop.startAnimation(topAnim)
 
-            val bottomAnim: Animation = TranslateAnimation(0f, 0f, binding.vAnimatorBottom.height.toFloat(), 0f)
+            val bottomAnim: Animation =
+                TranslateAnimation(0f, 0f, binding.vAnimatorBottom.height.toFloat(), 0f)
             bottomAnim.duration = 200
             bottomAnim.setAnimationListener(object : Animation.AnimationListener {
                 override fun onAnimationStart(animation: Animation) {
@@ -602,7 +612,8 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
 
 
     fun switchOrientation() {
-        requestedOrientation = if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
+        requestedOrientation =
+            if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
                 ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
             } else {
                 ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
@@ -631,10 +642,4 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
         const val SAVE_MODE_PAINTING_BRUSH = "Painting Brush"
     }
 
-    override fun initPdfPageRv(items: List<PdfPageBean>) {
-        pdfPageAdapter.submitList(items)
-        pdfPageAdapter.changeSelectPager(0)
-        iniSetVerticalSeekbar(items.size)
-    }
-
 }
\ No newline at end of file

app/src/main/java/com/base/pdfviewerscannerwhite/ui/document/pdf/PdfBoxUtils.kt

@@ -7,7 +7,9 @@ import android.graphics.drawable.Drawable
 import android.net.Uri
 import com.base.pdfviewerscannerwhite.helper.MyApplication.Companion.context
 import com.base.pdfviewerscannerwhite.utils.LogEx
+import com.base.pdfviewerscannerwhite.utils.Paths
 import com.base.pdfviewerscannerwhite.utils.UriUtils.readFileToByteArray
+import com.tom_roush.pdfbox.io.MemoryUsageSetting
 import com.tom_roush.pdfbox.pdmodel.PDDocument
 import com.tom_roush.pdfbox.pdmodel.PDPage
 import com.tom_roush.pdfbox.pdmodel.PDPageContentStream
@@ -25,38 +27,48 @@ import java.io.IOException
 object PdfBoxUtils {
 
     private val TAG = "PdfUtils"
-
-    fun getNumberOfPages(filePath: String, password: String? = null, uri: String? = null): Int {
-        val document =
-            loadPDDocument(path = filePath, password, uri)
-        val number = document.numberOfPages
-        document.close()
-        return number
+    val memoryUsageSetting by lazy {
+        // MemoryUsageSetting.setupMainMemoryOnly()
+        // LogEx.logDebug("ttttttt","${Runtime.getRuntime().maxMemory() / 2}")
+        MemoryUsageSetting.setupMixed(Runtime.getRuntime().maxMemory() / 2, 512 * 1024 * 1024)
+            .also {
+                it.tempDir = Paths.cacheDir(Paths.PdfDir)
             }
 
+    }
 
-    fun getPdfDrawablePage(
-        context: Context,
+    fun getPdfDocument(
         filePath: String,
         password: String? = null,
         uri: String? = null,
+    ): PDDocument {
+        return loadPDDocument(filePath, password, uri)
+    }
+
+    fun getPdfDrawablePage(
+        context: Context,
         pageIndex: Int,
         scale: Float = 1f,
+        renderer: PDFRenderer,
     ): Drawable {
-        val document = loadPDDocument(filePath, password, uri)
-        val renderer = PDFRenderer(document)
-        val bitmap: Bitmap = renderer.renderImage(pageIndex, scale, ImageType.RGB, RenderDestination.EXPORT)
+        val bitmap: Bitmap =
+            renderer.renderImage(pageIndex, scale, ImageType.RGB, RenderDestination.EXPORT)
         val drawable = BitmapDrawable(context.resources, bitmap)
-        document.close()
         return drawable
     }
 
 
-    fun checkPdfEncryption(filePath: String = "", uri: String? = null): Int {
+    @Synchronized
+    fun checkPdfEncryption(
+        filePath: String = "",
+        uri: String? = null,
+        memUsageSetting: MemoryUsageSetting? = null
+    ): Int {
         var state = 0
         var pdfDocument: PDDocument? = null
         try {
-            pdfDocument = loadPDDocument(filePath, null, uri)
+            pdfDocument =
+                loadPDDocument(filePath, null, uri, memUsageSetting ?: memoryUsageSetting)
             pdfDocument.use { document ->
                 if (document.isEncrypted) {
                     println("The PDF is encrypted.")
@@ -80,7 +92,7 @@ object PdfBoxUtils {
             }
         } catch (e: IOException) {
             e.printStackTrace()
-            state = 1
+            state = -1
         } finally {
             pdfDocument?.close()
         }
@@ -171,19 +183,37 @@ object PdfBoxUtils {
     /**
      * 注意一下PDDocument用完都要关闭一下
      */
-    private fun loadPDDocument(path: String, password: String?, uri: String? = null): PDDocument {
+    private fun loadPDDocument(
+        path: String,
+        password: String?,
+        uri: String? = null,
+        memUsageSetting: MemoryUsageSetting? = null
+    ): PDDocument {
+        val memSet = memUsageSetting ?: MemoryUsageSetting.setupMainMemoryOnly()
         return if (uri == null) {
             if (password == null) {
-                PDDocument.load(File(path))
+                PDDocument.load(File(path), memSet)
             } else {
-                PDDocument.load(File(path), password)
+                PDDocument.load(File(path), password, memSet)
             }
         } else {
             if (password == null) {
-                PDDocument.load(readFileToByteArray(context, Uri.parse(uri)) ?: byteArrayOf())
+                PDDocument.load(
+                    readFileToByteArray(context, Uri.parse(uri)) ?: byteArrayOf(),
+                    "",
+                    null,
+                    null,
+                    memSet
+                )
 
             } else {
-                PDDocument.load(readFileToByteArray(context, Uri.parse(uri)) ?: byteArrayOf(), password)
+                PDDocument.load(
+                    readFileToByteArray(context, Uri.parse(uri)) ?: byteArrayOf(),
+                    password,
+                    null,
+                    null,
+                    memSet
+                )
             }
         }
     }

app/src/main/java/com/base/pdfviewerscannerwhite/ui/document/pdf/PdfPagerAdapter.kt

@@ -2,10 +2,8 @@ package com.base.pdfviewerscannerwhite.ui.document.pdf
 
 import android.annotation.SuppressLint
 import android.content.Context
-import android.net.Uri
 import android.view.View
 import android.view.ViewGroup
-import android.widget.ImageView
 import androidx.recyclerview.widget.RecyclerView.ViewHolder
 import com.base.pdfviewerscannerwhite.R
 import com.base.pdfviewerscannerwhite.bean.PdfPageBean
@@ -13,15 +11,23 @@ import com.base.pdfviewerscannerwhite.databinding.ItemPdfPagerBinding
 import com.base.pdfviewerscannerwhite.databinding.ItemPdfPagerSplitBinding
 import com.base.pdfviewerscannerwhite.utils.XmlEx.inflate
 import com.chad.library.adapter4.BaseQuickAdapter
-import java.util.concurrent.LinkedBlockingQueue
-import java.util.concurrent.ThreadPoolExecutor
-import java.util.concurrent.TimeUnit
+import com.tom_roush.pdfbox.pdmodel.PDDocument
+import com.tom_roush.pdfbox.rendering.PDFRenderer
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 
 class PdfPagerAdapter(
     val pdfPath: String,
     val uri: String? = null,
     val itemLayout: Int = R.layout.item_pdf_pager,
+    private val previewScale: Float = 1f,
+    initCallBack: ((itemCount: Int) -> Unit)? = null
 ) : BaseQuickAdapter<PdfPageBean, PdfPagerAdapter.PdfPagerViewHolder>() {
 
     var mPassword: String? = null
@@ -30,16 +36,94 @@ class PdfPagerAdapter(
 
     inner class PdfPagerViewHolder(view: View) : ViewHolder(view)
 
-    var corePoolSize = 4 // 核心线程数
-    var maximumPoolSize = 10 // 最大线程数
-    var keepAliveTime: Long = 120 // 非核心线程空闲存活时间
-    var threadPoolExecutor = ThreadPoolExecutor(
-        corePoolSize,
-        maximumPoolSize,
-        keepAliveTime,
-        TimeUnit.SECONDS,
-        LinkedBlockingQueue()
+    //    var corePoolSize = 4 // 核心线程数
+//    var maximumPoolSize = 10 // 最大线程数
+//    var keepAliveTime: Long = 120 // 非核心线程空闲存活时间
+//    var threadPoolExecutor = ThreadPoolExecutor(
+//        corePoolSize,
+//        maximumPoolSize,
+//        keepAliveTime,
+//        TimeUnit.SECONDS,
+//        LinkedBlockingQueue()
+//    )
+    private val scope = MainScope()
+    private var pdfDocument: PDDocument? = null
+    private var pdfRender: PDFRenderer? = null
+
+    private val selectPayLoad = 0
+
+    private val refreshPayLoad = 1
+
+    init {
+        scope.launch(SupervisorJob() + Dispatchers.IO) {
+            pdfDocument = PdfBoxUtils.getPdfDocument(pdfPath, mPassword, uri)
+            pdfRender = PDFRenderer(pdfDocument)
+            val dataList = mutableListOf<PdfPageBean>()
+            repeat(pdfDocument?.numberOfPages ?: 0) {
+                dataList.add(PdfPageBean(it))
+            }
+            if (dataList.isNotEmpty()) {
+                dataList[0].isSelect = true
+            }
+            withContext(Dispatchers.Main) {
+                submitList(dataList)
+                initCallBack?.invoke(dataList.size)
+            }
+            items.forEachIndexed { index, pdfPageBean ->
+                val render = pdfRender ?: return@launch
+                if (pdfPageBean.pageDrawable != null) return@forEachIndexed
+                if (!isActive) return@launch
+                runCatching {
+                    val drawable = PdfBoxUtils.getPdfDrawablePage(
+                        context, index, previewScale, render
                     )
+                    pdfPageBean.pageDrawable = drawable
+                }.onFailure {
+                    return@launch
+                }
+                withContext(Dispatchers.Main) {
+                    pdfPageBean.pageDrawable?.let {
+                        notifyItemChanged(index, refreshPayLoad)
+                    }
+                }
+            }
+
+        }
+
+    }
+
+    override fun onBindViewHolder(
+        holder: PdfPagerViewHolder,
+        position: Int,
+        item: PdfPageBean?,
+        payloads: List<Any>
+    ) {
+        if (payloads.isNotEmpty()) {
+            if (item == null) return
+            when (itemLayout) {
+                R.layout.item_pdf_pager -> {
+                    val binding = ItemPdfPagerBinding.bind(holder.itemView)
+                    if (payloads[0] == 0) {
+                        binding.tvPagerIndex.isSelected = item.isSelect
+                        binding.tvPagerIndex.text = (item.pageIndex + 1).toString()
+                        binding.flBorder.isSelected = item.isSelect
+                    } else if (payloads[0] == 1) {
+                        binding.ivPager.setImageDrawable(item.pageDrawable)
+                    }
+                }
+
+                R.layout.item_pdf_pager_split -> {
+                    val binding = ItemPdfPagerSplitBinding.bind(holder.itemView)
+                    if (payloads[0] == 0) {
+                        binding.ivSelector.isSelected = item.isSelect
+                    } else if (payloads[0] == 1) {
+                        binding.ivPager.setImageDrawable(item.pageDrawable)
+                    }
+                }
+            }
+        } else
+            super.onBindViewHolder(holder, position, item, payloads)
+    }
 
     @SuppressLint("SetTextI18n")
     override fun onBindViewHolder(holder: PdfPagerViewHolder, position: Int, item: PdfPageBean?) {
@@ -47,16 +131,13 @@ class PdfPagerAdapter(
         when (itemLayout) {
             R.layout.item_pdf_pager -> {
                 val binding = ItemPdfPagerBinding.bind(holder.itemView)
-                val context = holder.itemView.context
                 binding.tvPagerIndex.isSelected = item.isSelect
                 binding.tvPagerIndex.text = (item.pageIndex + 1).toString()
                 binding.flBorder.isSelected = item.isSelect
 
-                if (item.pageDrawable != null) {
+                //if (item.pageDrawable != null) {
                 binding.ivPager.setImageDrawable(item.pageDrawable)
-                } else {
-                    loadPagerDrawable(context, item, binding.root, binding.ivPager)
-                }
+                // }
                 binding.root.setOnClickListener {
                     clickAction?.invoke(item.pageIndex)
                 }
@@ -65,14 +146,12 @@ class PdfPagerAdapter(
             R.layout.item_pdf_pager_split -> {
                 val binding = ItemPdfPagerSplitBinding.bind(holder.itemView)
                 binding.ivSelector.isSelected = item.isSelect
-                if (item.pageDrawable != null) {
+                // if (item.pageDrawable != null) {
                 binding.ivPager.setImageDrawable(item.pageDrawable)
-                } else {
-                    loadPagerDrawable(context, item, binding.root, binding.ivPager, 1.5f)
-                }
+                //}
                 binding.ivSelector.setOnClickListener {
                     item.isSelect = !item.isSelect
-                    notifyItemChanged(position, "aaa")
+                    notifyItemChanged(position, selectPayLoad)
                     selectAction?.invoke(items.any { it.isSelect }, items.all { it.isSelect })
                 }
             }
@@ -81,28 +160,11 @@ class PdfPagerAdapter(
 
     }
 
-    private fun loadPagerDrawable(
+    override fun onCreateViewHolder(
         context: Context,
-        item: PdfPageBean,
-        itemView: View,
-        iv: ImageView,
-        scale: Float = 1f
-    ) {
-        threadPoolExecutor.execute {
-            runCatching {
-                val drawable = PdfBoxUtils.getPdfDrawablePage(context, pdfPath, mPassword, uri, item.pageIndex, scale)
-                item.pageDrawable = drawable
-                itemView.post {
-                    item.pageDrawable?.let {
-                        iv.setImageDrawable(it)
-                    }
-                }
-            }
-        }
-    }
-
-
-    override fun onCreateViewHolder(context: Context, parent: ViewGroup, viewType: Int): PdfPagerViewHolder {
+        parent: ViewGroup,
+        viewType: Int
+    ): PdfPagerViewHolder {
         return PdfPagerViewHolder(itemLayout.inflate(parent))
     }
 
@@ -126,4 +188,11 @@ class PdfPagerAdapter(
         mPassword = password
         notifyDataSetChanged()
     }
+
+    fun release() {
+        scope.cancel()
+        pdfRender = null
+        pdfDocument?.close()
+        pdfDocument = null
+    }
 }
\ No newline at end of file

app/src/main/java/com/base/pdfviewerscannerwhite/ui/document/pdf/PdfPresenter.kt

@@ -7,7 +7,6 @@ import com.artifex.mupdfdemo.MuPDFCore
 import com.artifex.mupdfdemo.OutlineActivityData
 import com.base.pdfviewerscannerwhite.R
 import com.base.pdfviewerscannerwhite.bean.ConstObject.MIME_TYPE_PDF
-import com.base.pdfviewerscannerwhite.bean.PdfPageBean
 import com.base.pdfviewerscannerwhite.ui.document.pdf.PdfMergeActivity.Companion.mergePdfList
 import com.base.pdfviewerscannerwhite.utils.LogEx
 import com.base.pdfviewerscannerwhite.utils.UriUtils.readFileToByteArray
@@ -17,8 +16,7 @@ import java.io.File
 
 
 class PdfPresenter(
-    val context: Context,
-    val pdfView: PdfView? = null
+    val context: Context
 ) {
     private val TAG = "PdfPresenter"
     var password: String? = null
@@ -41,25 +39,6 @@ class PdfPresenter(
         return muPDFCore
     }
 
-
-    fun iniPdfPage(filePath: String, uri: String? = null) {
-        val list = arrayListOf<PdfPageBean>()
-        val number = PdfBoxUtils.getNumberOfPages(filePath, password, uri)
-        repeat(number) {
-            list.add(PdfPageBean(it))
-        }
-        pdfView?.initPdfPageRv(list)
-    }
-
-    fun iniPdfPage(pageCount: Int) {
-        val list = arrayListOf<PdfPageBean>()
-        repeat(pageCount) {
-            list.add(PdfPageBean(it))
-        }
-        pdfView?.initPdfPageRv(list)
-    }
-
-
     fun splitPdf(
         srcPath: String,
         newPath: String,
@@ -118,7 +97,10 @@ class PdfPresenter(
 
     private fun createAppDocumentDir(): File {
         val appName = context.resources.getString(R.string.app_name)
-        val appDir = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS), appName)
+        val appDir = File(
+            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS),
+            appName
+        )
         if (!appDir.exists()) {
             appDir.mkdirs()
         }

app/src/main/java/com/base/pdfviewerscannerwhite/ui/document/pdf/PdfSplitActivity.kt

@@ -4,7 +4,6 @@ import android.content.Intent
 import androidx.activity.addCallback
 import com.base.pdfviewerscannerwhite.R
 import com.base.pdfviewerscannerwhite.bean.ConstObject
-import com.base.pdfviewerscannerwhite.bean.PdfPageBean
 import com.base.pdfviewerscannerwhite.databinding.ActivityPdfSplitBinding
 import com.base.pdfviewerscannerwhite.helper.BaseActivity
 import com.base.pdfviewerscannerwhite.helper.MyApplication
@@ -30,7 +29,7 @@ class PdfSplitActivity : BaseActivity<ActivityPdfSplitBinding>(), PdfView {
     }
 
     override fun initView() {
-        pdfPresenter = PdfPresenter(this, this)
+        pdfPresenter = PdfPresenter(this)
         path = intent.extras?.getString("path", "") ?: ""
         pwd = intent.extras?.getString("pwd", "") ?: ""
         uri = intent.extras?.getString("uri")
@@ -40,7 +39,7 @@ class PdfSplitActivity : BaseActivity<ActivityPdfSplitBinding>(), PdfView {
 
         initAdapter()
 
-        pdfPresenter.iniPdfPage(path, uri)
+        //pdfPresenter.iniPdfPage(path, uri)
     }
 
     override fun initListener() {
@@ -71,7 +70,7 @@ class PdfSplitActivity : BaseActivity<ActivityPdfSplitBinding>(), PdfView {
     }
 
     private fun initAdapter() {
-        pdfPagerAdapter = PdfPagerAdapter(path, null, R.layout.item_pdf_pager_split)
+        pdfPagerAdapter = PdfPagerAdapter(path, null, R.layout.item_pdf_pager_split, 1.5f)
         pdfPagerAdapter.mPassword = pwd
         pdfPagerAdapter.selectAction = { enable, allSelect ->
             binding.tvBtnSplit.isEnabled = enable
@@ -81,8 +80,8 @@ class PdfSplitActivity : BaseActivity<ActivityPdfSplitBinding>(), PdfView {
 
     }
 
-    override fun initPdfPageRv(items: List<PdfPageBean>) {
-        pdfPagerAdapter.submitList(items)
+    override fun onDestroy() {
+        super.onDestroy()
+        pdfPagerAdapter.release()
     }
-
 }
\ No newline at end of file

app/src/main/java/com/base/pdfviewerscannerwhite/ui/document/pdf/PdfView.kt

 package com.base.pdfviewerscannerwhite.ui.document.pdf
 
-import com.base.pdfviewerscannerwhite.bean.PdfPageBean
-
 interface PdfView {
 
-    fun initPdfPageRv(items: List<PdfPageBean>)
-
     fun jumpPage(pageIndex: Int) = Unit
 
     fun jumpSplit() = Unit

app/src/main/java/com/base/pdfviewerscannerwhite/ui/main/MainPresenter.kt

@@ -71,9 +71,10 @@ class MainPresenter(
         var mainRefreshData: Boolean = false
     }
 
-    fun initAllDocumentData() = lifecycleScope.launch(Dispatchers.IO) {
+    fun initAllDocumentData() {
         if (!mainRefreshData) {
             mainRefreshData = true
+            lifecycleScope.launch(Dispatchers.IO) {
                 val start = System.currentTimeMillis()
                 Log.d("glc", "pdfs 清理前:" + pdfDocuments.size)
                 context.upDateDemoStore()
@@ -82,7 +83,17 @@ class MainPresenter(
                     ConstObject.haveSaveDemo = true
                 }
                 val pdfs = initAllPdfData()
-            pdfs.map { it.state = PdfBoxUtils.checkPdfEncryption(it.path) }
+                val largePdf = mutableListOf<DocumentBean>()
+                pdfs.map {
+                    it.state = PdfBoxUtils.checkPdfEncryption(
+                        it.path,
+                        memUsageSetting = PdfBoxUtils.memoryUsageSetting.getPartitionedCopy(pdfs.size)
+                    )
+                    if (it.state == -1) largePdf.add(it)
+                }
+                largePdf.map {
+                    it.state = PdfBoxUtils.checkPdfEncryption(it.path)
+                }
                 pdfDocuments.clear()
                 wordDocuments.clear()
                 excelDocuments.clear()
@@ -93,12 +104,13 @@ class MainPresenter(
                 wordDocuments.addAll(initAllWordData())
                 excelDocuments.addAll(initAllExcelData())
                 pptDocuments.addAll(initAllPptData())
-            mainRefreshData = false
                 withContext(Dispatchers.Main) {
                     val end = System.currentTimeMillis()
                     val time = end - start
                     LogEx.logDebug(TAG, "time=$time")
                     mainView.refreshPageList()
+                    mainRefreshData = false
+                }
             }
         }
     }
@@ -113,10 +125,18 @@ class MainPresenter(
         when (documentType) {
             TYPE_PDF -> {
                 val data = arrayListOf<DocumentBean>()
+                val largeData = mutableListOf<DocumentBean>()
                 data.addAll(pdfDocuments)
 
                 data.forEach {
                     it.isBookmarked = bookmarkList.contains(it.path)
+                    it.state = PdfBoxUtils.checkPdfEncryption(
+                        it.path,
+                        memUsageSetting = PdfBoxUtils.memoryUsageSetting.getPartitionedCopy(data.size)
+                    )
+                    if (it.state == -1) largeData.add(it)
+                }
+                largeData.forEach {
                     it.state = PdfBoxUtils.checkPdfEncryption(it.path)
                 }
                 when (dataType) {

app/src/main/java/com/base/pdfviewerscannerwhite/utils/Paths.kt

+package com.base.pdfviewerscannerwhite.utils
+
+import android.net.Uri
+import androidx.core.net.toUri
+import com.base.pdfviewerscannerwhite.helper.MyApplication
+import java.io.File
+
+object Paths {
+    const val PdfDir = "pdf"
+
+    /**
+     * 应用存储文件的文件夹 (不需要读写权限)
+     * @name 子文件夹名称
+     */
+    fun fileDir(name: String): File? {
+        return runCatching {
+            (MyApplication.context.getExternalFilesDir(name)?.apply {
+                if (!exists() || !isDirectory) {
+                    mkdirs()
+                }
+            }) ?: (MyApplication.context.filesDir?.let {
+                File(it, name).apply {
+                    if (!exists() || !isDirectory) {
+                        mkdirs()
+                    }
+                }
+            })
+        }.getOrNull()
+    }
+
+    /**
+     * 应用缓存文件夹 (不需要读写权限)
+     * @name 子文件夹名称
+     */
+    fun cacheDir(name: String): File? {
+        return runCatching {
+            val dir = MyApplication.context.externalCacheDir ?: MyApplication.context.cacheDir
+            dir?.let {
+                File(it, name).apply {
+                    if (!exists() || !isDirectory) {
+                        mkdirs()
+                    }
+                }
+            }
+        }.getOrNull()
+    }
+
+    fun String.toUriCompat(): Uri {
+        var uri = this.toUri()
+        if (uri.scheme.isNullOrEmpty()) {
+            uri = "file://$this".toUri()
+        }
+        return uri
+    }
+}
\ No newline at end of file