Android Question Get file from email attachment

Javier Alonso said:

It is possible. I finally got it. My app opens when the user clics on email attachments of a predefined mimetype (mine ends in ".mb8") and copy the attached file to a local directory. First, we have to assigne the mimetype to our app in the manifest file, adding these lines:

B4X:

AddActivityText(myActivity,
<intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <action android:name="android.intent.action.EDIT" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data
       android:mimeType="application/octet-stream"
       android:host="*"
       android:pathPattern=".*\\.xxx"
    />
</intent-filter>
<intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <action android:name="android.intent.action.EDIT" />
    <category android:name="android.intent.category.DEFAULT" />
    <data
       android:mimeType="application/xxx"
       android:host="*"
       android:pathPattern=".*\\.xxx"
    />
</intent-filter>)

Where xxx is the type chosen and myActivity is the activity that opens when the user clics on the attachment. Then, in the activity, we just write:

B4X:

    Dim Intent1 As Intent
    Intent1 = Activity.GetStartingIntent

    If Intent1.Action = "android.intent.action.VIEW" Then    ' The activity has been called from outside the app
      
        Dim jo As JavaObject
        Dim cd As String = jo.InitializeStatic("anywheresoftware.b4a.objects.streams.File").GetField("ContentDir")
        Dim UriString As String = intent1.GetData

        Dim Inp As InputStream  = File.OpenInput(cd , UriString)
        Dim Out As OutputStream = File.OpenOutput(myFolder, myFile, False)

        File.copy2(Inp, Out)
        Inp.Close
        Out.Close
    End if

What we cannot do, of course, is modifying the original attachment, but it can be copied elsewhere.

Click to expand...

Javier Alonso said:

It is possible. I finally got it. My app opens when the user clics on email attachments of a predefined mimetype (mine ends in ".mb8") and copy the attached file to a local directory. First, we have to assigne the mimetype to our app in the manifest file, adding these lines:

B4X:

AddActivityText(myActivity,
<intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <action android:name="android.intent.action.EDIT" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data
       android:mimeType="application/octet-stream"
       android:host="*"
       android:pathPattern=".*\\.xxx"
    />
</intent-filter>
<intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <action android:name="android.intent.action.EDIT" />
    <category android:name="android.intent.category.DEFAULT" />
    <data
       android:mimeType="application/xxx"
       android:host="*"
       android:pathPattern=".*\\.xxx"
    />
</intent-filter>)

Where xxx is the type chosen and myActivity is the activity that opens when the user clics on the attachment. Then, in the activity, we just write:

B4X:

    Dim Intent1 As Intent
    Intent1 = Activity.GetStartingIntent

    If Intent1.Action = "android.intent.action.VIEW" Then    ' The activity has been called from outside the app
      
        Dim jo As JavaObject
        Dim cd As String = jo.InitializeStatic("anywheresoftware.b4a.objects.streams.File").GetField("ContentDir")
        Dim UriString As String = intent1.GetData

        Dim Inp As InputStream  = File.OpenInput(cd , UriString)
        Dim Out As OutputStream = File.OpenOutput(myFolder, myFile, False)

        File.copy2(Inp, Out)
        Inp.Close
        Out.Close
    End if

What we cannot do, of course, is modifying the original attachment, but it can be copied elsewhere.

Click to expand...