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我一直在尝试使用 PDFView 库显示 PDF。

PDF 首先下载并保存到内存中

我的日志猫：

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.amfstudios.echomagazine/com.amfstudios.PDFViewer}: com.joanzapata.pdfview.exception.FileNotFoundException: /data/data/com.amfstudios.echomagazine/app_magPDF/PDF_1.pdf does not exist.
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2314)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2388)
        at android.app.ActivityThread.access$800(ActivityThread.java:148)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1292)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5312)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:696)
 Caused by: com.joanzapata.pdfview.exception.FileNotFoundException: /data/data/com.amfstudios.echomagazine/app_magPDF/PDF_1.pdf does not exist.
        at com.joanzapata.pdfview.PDFView.fromAsset(PDFView.java:905)
        at com.amfstudios.PDFViewer.onCreate(PDFViewer.java:79)
        at android.app.Activity.performCreate(Activity.java:5953)

尽管使用 Log 我能够看到下载的文件以与 FileNotFoundException 中显示的路径相同的路径保存

保存在片段内，并从活动中读取。

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