【修复】1.修复空文件路径导致的崩溃。2.修复0不能作为除数的错误。3.修复没有权限导致的查询问题。

app/src/main/java/com/base/pdfviewerscannerwhite/fcm/NotificationUiUtil.kt

@@ -213,7 +213,7 @@ object NotificationUiUtil {
 
             NOTIFICATION_ACTION_APP_PROCESS -> {
                 val pair = MyApplication.context.ramPair()
-                val percent = (pair.first * 100 / pair.second).toInt()
+                val percent =if(pair.second>0) (pair.first * 100 / pair.second).toInt() else 0
 
                 val desc = "Memory is $percent% used"
                 val smallRemoteViewsVar = RemoteViews(context.packageName, R.layout.notification_memory_small_1)

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

@@ -109,7 +109,10 @@ class PdfActivity : BaseActivity<ActivityPdfBinding>(), PdfView {
         binding.tvPdfName.text = file.name
 
         pdfPresenter = PdfPresenter(this)
-
+        if (!file.exists() && uri == null) {
+            finish()
+            return
+        }
         initAdapter()
         changeNormalUI()
 

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

@@ -13,6 +13,7 @@ import com.base.pdfviewerscannerwhite.utils.XmlEx.inflate
 import com.chad.library.adapter4.BaseQuickAdapter
 import com.tom_roush.pdfbox.pdmodel.PDDocument
 import com.tom_roush.pdfbox.rendering.PDFRenderer
+import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.MainScope
 import kotlinx.coroutines.SupervisorJob
@@ -55,7 +56,7 @@ class PdfPagerAdapter(
     private val refreshPayLoad = 1
 
     init {
-        scope.launch(SupervisorJob() + Dispatchers.IO) {
+        scope.launch(CoroutineExceptionHandler { _, _ ->  } + Dispatchers.IO) {
             pdfDocument = PdfBoxUtils.getPdfDocument(pdfPath, mPassword, uri)
             pdfRender = PDFRenderer(pdfDocument)
             val dataList = mutableListOf<PdfPageBean>()

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

@@ -8,6 +8,7 @@ import com.base.pdfviewerscannerwhite.databinding.ActivityPdfSplitBinding
 import com.base.pdfviewerscannerwhite.helper.BaseActivity
 import com.base.pdfviewerscannerwhite.helper.MyApplication
 import com.base.pdfviewerscannerwhite.ui.view.DialogView.showDocumentRenameDialog
+import java.io.File
 
 class PdfSplitActivity : BaseActivity<ActivityPdfSplitBinding>(), PdfView {
 
@@ -70,6 +71,11 @@ class PdfSplitActivity : BaseActivity<ActivityPdfSplitBinding>(), PdfView {
     }
 
     private fun initAdapter() {
+        val file = File(path)
+        if (!file.exists()) {
+            finish()
+            return
+        }
         pdfPagerAdapter = PdfPagerAdapter(path, null, R.layout.item_pdf_pager_split, 1.5f, mPassword = pwd)
         pdfPagerAdapter.selectAction = { enable, allSelect ->
             binding.tvBtnSplit.isEnabled = enable

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

@@ -415,7 +415,11 @@ fun CoroutineScope.queryFiles(context: Context, fileSuffix: String, flow: Mutabl
         } else {
             MediaStore.Files.getContentUri("external")
         }
-        val cursor = context.contentResolver.query(queryUri, projection, selection, null, sortOrder)
+        val cursor =try {
+            context.contentResolver.query(queryUri, projection, selection, null, sortOrder)
+        } catch (e:SecurityException){
+            null
+        }
         if (cursor != null) {
             while (cursor.moveToNext()) {
                 delay(150)