Android file download function

Android downloads files on the network for your reference. The specific contents are as follows

Steps:

1. Download files using HTTP protocol

-Create an httpurlconnection object: httpurlconnection urlconn = (httpurlconnection) URL. Openconnection()- Get an InputStream object: urlconn. Getinputstream() - access to the network: android.permission.internet

2. Write the downloaded file into the sdcard - get the directory of the SD card of the current device: environment. Getexternalstragedirectory() - access permission to the SD card: android.permission.write_ EXTERNAL_ STORAGE

code:

activity_ main.xml

MainActivity.java

Tools:

HttpDownloader.java

FileUtils.java

If you can't download, please turn off the windows firewall first.