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java - Android 安装应用程序：SecurityException: content://.fileprovider///Android/data/PK/files/Download/apk

问题描述

Fatal Exception: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.VIEW dat=content://packageName.fileprovider///Android/data/packageName/files/Download/apkName typ=application/vnd.android.package-archive flg=0x10000001 cmp=com.google.android.packageinstaller/com.android.packageinstaller.PackageInstallerActivity } from ProcessRecord{f4e79d 20872:packageName/u0a207} (pid=20872, uid=10207) not exported from uid 10027
   at android.os.Parcel.readException(Parcel.java:2005)
   at android.os.Parcel.readException(Parcel.java:1951)
   at android.app.IActivityManager$Stub$Proxy.startActivity(IActivityManager.java:4386)
   at android.app.Instrumentation.execStartActivity(Instrumentation.java:1615)
   at android.app.Activity.startActivityForResult(Activity.java:4569)
   at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
   at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:68)
   at android.app.Activity.startActivityForResult(Activity.java:4527)
   at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:751)
   at android.app.Activity.startActivity(Activity.java:4888)
   at android.app.Activity.startActivity(Activity.java:4856)
   at packagename.util.DownUtil.AndroidNInstallApk(DownUtil.kt:83)
   at packagename.util.DownLoadApkManager.isClearApk(DownLoadApkManager.kt:91)
   at packageName.util.DownLoadApkManager.startDownLoad(DownLoadApkManager.kt:49)
   at packageName.home.HomeFragment.downLoadApk(HomeFragment.kt:1429)
   at packagename.home.HomeFragment.access$downLoadApk(HomeFragment.kt:69)
   at packageName.home.HomeFragment$showForceUpdateDialog$1.onClick(HomeFragment.kt:1482)
   at android.view.View.performClick(View.java:6304)
   at android.view.View$PerformClick.run(View.java:24803)
   at android.os.Handler.handleCallback(Handler.java:790)
   at android.os.Handler.dispatchMessage(Handler.java:99)
   at android.os.Looper.loop(Looper.java:164)
   at android.app.ActivityThread.main(ActivityThread.java:6597)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:518)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:818)

：</p> 

val intentN = Intent(Intent.ACTION_VIEW)

    intentN.flags = Intent.FLAG_ACTIVITY_NEW_TASK

    val apkUri = FileProvider.getUriForFile(context,
            "${context.packageName}.fileprovider", file)

    intentN.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
    intentN.setDataAndType(apkUri, "application/vnd.android.package-archive")
    context.startActivity(intentN)

结果：</p>

context.startActivity(intentN)

并非所有Android N以上设备都会发生，目前在小米8 Android8.0.1设备上发现

我究竟做错了什么 ？

标签： java

解决方案

如果您在棉花糖 6.0 之后运行应用程序，则需要授予运行时权限以从 sd 卡访问数据

检查本教程。 https://developer.android.com/training/permissions/requesting

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