解决 Android N 7.0 上 报错：android.os

解决AndroidN 上 安装Apk时报错：android.os.FileUriExposedException: file:///storage/emulated/0/Download/appName-2.3.0.apk exposed beyond app through Intent.getData()

http://blog.csdn.net/yy1300326388/article/details/52787853