Android7.0 fileuriexposedexception Problem Solving

First, the reason of fileuriexposedexception

Android7.0 does not recognize URIs beginning with file://, to convert them to content://to recognize URIs

Second, how to solve

Creation of 1.xml:

File_paths.xml the directory in which the provider external file is written: The file is placed under res/xml/. To avoid conflicts with other apps, it's best to bring your app's package name.

File contents:

<?xml version= "1.0" encoding= "Utf-8"?>
<paths>
    <external-path path= "." Name= "External_storage_root"/>
</paths>

The inner element can be a files-path,cache-path,external-path,external-files-path,external-cache-path, corresponding to Context.getfilesdir (), Context.getcachedir (), Environment.getexternalstoragedirectory (), Context.getexternalfilesdir (), Context.getexternalcachedir () and several other methods. Then look at the source code found there is a not written in the document, but also can use the element, is Root-path, directly corresponding to the file system root directory. However, since it is not written into the document, there is a possibility of future removal. Use the words to pay attention to the risk.

Configuration in 2.manifests.xml

<manifest>

　　 ...

<application>

　　　　 ...

<provider
    Android:name= "Android.support.v4.content.FileProvider"
    Android:authorities= "${application_id}"
    Android:exported= "false"
    Android:granturipermissions= "true" >
    <meta-data
        Android:name= "Android.support.FILE_PROVIDER_PATHS"
        Android:resource= "@xml/file_paths"/>
</provider>

...

</application>

</manifest>

3.Uri use

1) Geturiforfile Method conversion:

public static Uri Geturiforfile (context context, file file) {
Return Fileprovider.geturiforfile (Context, Gb.getcallback (). Getapplicationid (), file);
}

The second parameter is the ' authorities ' defined in manifest: Because at the time the assignment in File_paths.xml is., the second argument is: "Com.up366.mobile.fileProvider"

2) Intent plus flags

Intent.addflags (intent.flag_grant_read_uri_permission);

Note: Get local picture, no URI, no need to write

Complete.

Android7.0 fileuriexposedexception Problem Solving