How to check whether a known uri file exists in Android storage?

Question

The file uri is known, such as

`file:///mnt/sdcard/Download/AppSearch_2213333_60.apk`

I want to check if this file can open or not in background, how to do?

Answer 1

Check if a file of a path exists like this:

File file = new File("/mnt/sdcard/Download/AppSearch_2213333_60.apk" );
if (file.exists()) {
 //Do something
}

Keep in mind to remove something like "file://" etc. otherwise use:

 File file = new File(URI.create("file:///mnt/sdcard/Download/AppSearch_2213333_60.apk").getPath());
 if (file.exists()) {
  //Do something
 }

Also you have to set proper permissions for your app in the AndroidManifest.xml to access the sdcard:

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />