Android Kotlin - Google Play 控制台中的 ArithmeticException

编程问答 2022-04-21

问题描述

我的某些用户导致了这次崩溃：

java.lang.ArithmeticException: 
  at de.xxx.lustigebildervideos.DownloadFile$downloadFile$1.invoke$lambda-1 (DownloadFile.java)
  at de.xxx.lustigebildervideos.DownloadFile$downloadFile$1.lambda$Kbj3agXFd8IQFPtNa8sysNDFn20 (DownloadFile.java)
  at de.xxx.lustigebildervideos.-$$Lambda$DownloadFile$downloadFile$1$Kbj3agXFd8IQFPtNa8sysNDFn20.run (lambda)
  at java.lang.Thread.run (Thread.java:919)

我不知道问题是什么，因为一切对我来说都很好，所以我无法调试它。它似乎发生在这里的某个地方：

    val request = DownloadManager.Request(Uri.parse("$fileURL&android=1"))
        .setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES,"/$path/$fileName")

    val dm = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
    downloadID = dm.enqueue(request)

    val br = object:broadcastReceiver(){
        override fun onReceive(p0: Context?,p1: Intent?) {
            val id:Long? = p1?.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID,-1)
            if(id == downloadID){
                downloadingOK = true
                finish()
                overridePendingTransition(0,0)
            }
        }
    }
    
    registerReceiver(br,IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE))

    Thread {
        var downloading = true
        while (downloading) {
            val q = DownloadManager.Query()
            q.setFilterById(downloadID)
            val cursor: Cursor = dm.query(q)
            cursor.movetoFirst()
            val bytesDownloaded: Int = cursor.getInt(
                cursor
                    .getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR)
            )
            val bytesTotal: Int =
                cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES))
            if(cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) === DownloadManager.STATUS_SUCCESSFUL) {
                downloading = false
            }
            val dlProgress = ((bytesDownloaded * 100L) / bytesTotal).toInt()
            runOnUiThread {
                dlProgressBar.progress = dlProgress
            }
            cursor.close()
        }
    }.start()

有什么问题吗？

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解决方法

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androidandroidarithmeticexceptionkotlinkotlinkotlin