Intent Filters & Receiving

[yttrium]

I've looked up how to receive content from an app when it wants to share something. This usually involves "Intent Filters". For my app, I want it to be able to accept pictures, and then launch the app and save the picture to memory when it's launched (via the share).

How do I go about doing this? Explanations I've seen involve adding something resembling the following to my Manifest file:

AddApplicationText(
<intent-filter>
    <action android:name="android.intent.action.SEND" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:mimeType="image/*" />
</intent-filter>)

My app doesn't show up in the stock Gallery's share function with this. How can I make it work, and how can I reference what to do when the app is launched this way? There's nice documentation on this for Android, but not for Basic4Android.

 

[yttrium]

As I said before you need to post what is returned by:

Log(In.ExtrasToString)

You cannot pass that directly to GetPathFromContentResult.

Sorry, I figured that since the content chooser worked that the intent would as well. I'll get a printout for you in a little bit.

 

[yttrium]

The printout of Msgbox(Log(In.ExtrasToString)) is:

Bundle[{android.intent.extra.STREAM=content://media/external/images/media/7859}]

Obtained by using the share function on a screenshot in the AOSP4.1 Gallery app.

 

[thedesolatesoul]

Okay, so now you get the value of Uri using:

Dim UriString as String
UriString = In.GetExtra("android.intent.extra.STREAM")
' Now UriString should contain a value similar to content://media/external/images/media/7859
'And now you can call the function to get the filepath
Preview.SetBackgroundImage(LoadBitmap("", GetPathFromContentResult(UriString)))

 

[yttrium]

I'm still getting these exceptions.

Error occurred:
An error has occured in sub:
main_getpathfromcontentresult
(java line: 415)
java.lang.RuntimeException:
Object should first be initialized (Cursor).
Continue?

Only difference is from line 408 to 415.

 

[Erel]

Try to open the Uri directly.

Add a RingtoneManager object from the Phone library and call:

LoadBitmap(Ringtone.GetContentDir, UriString)

 

[thedesolatesoul]

For some reason I cannot understand this code always returns null.

Dim UriString as String
UriString = In.GetExtra("android.intent.extra.STREAM")

I worked around it, not very elegant, but it would work.

      Log(In.ExtrasToString)
      Dim MyUriString As String 
      MyUriString = In.ExtrasToString
      MyUriString = MyUriString.SubString2(MyUriString.IndexOf("=")+1,MyUriString.IndexOf(","))
      Log(MyUriString)
      Activity.SetBackgroundImage (LoadBitmap("", GetPathFromContentResultString(MyUriString )))

 

[yttrium]

Try to do:

To figure out what is sent back in return and which extra is which.

For some reason I cannot understand this code always returns null.

Dim UriString as String
UriString = In.GetExtra("android.intent.extra.STREAM")

I worked around it, not very elegant, but it would work.

      Log(In.ExtrasToString)
      Dim MyUriString As String 
      MyUriString = In.ExtrasToString
      MyUriString = MyUriString.SubString2(MyUriString.IndexOf("=")+1,MyUriString.IndexOf(","))
      Log(MyUriString)
      Activity.SetBackgroundImage (LoadBitmap("", GetPathFromContentResultString(MyUriString )))

GetPathFromContentResultString isn't valid, do you mean GetPathFromContentResult?

 

[thedesolatesoul]

GetPathFromContentResultString isn't valid, do you mean GetPathFromContentResult?

Yes.

 

[yttrium]

Yes.

Your new snippet of code gives the following error:

Error Occurred
An error has occurred in sub: main_activity_resume (java line: 337)
java.lang.StringIndexOutOfBoundsException: length=80; regionStart=36; regionLength=-37
Continue?

 

[thedesolatesoul]

Your new snippet of code gives the following error:

Error Occurred
An error has occurred in sub: main_activity_resume (java line: 337)
java.lang.StringIndexOutOfBoundsException: length=80; regionStart=36; regionLength=-37
Continue?

It works fine for me. Maybe your intent is delivered differently.
You will have to figure out that yourself.

 

[yttrium]

It works fine for me. Maybe your intent is delivered differently.
You will have to figure out that yourself.

It was a really simple error with this line:

MyUriString = MyUriString.SubString2(MyUriString.IndexOf("=")+1,MyUriString.IndexOf(","))

I don't know where you thought a comma existed in

Bundle[{android.intent.extra.STREAM=content://media/external/images/media/7859}]

but changing the line of code to

MyUriString = MyUriString.SubString2(MyUriString.IndexOf("=")+1,MyUriString.IndexOf("}"))

fixed it immediately.

Thanks!

 

[thedesolatesoul]

It was a really simple error with this line:

MyUriString = MyUriString.SubString2(MyUriString.IndexOf("=")+1,MyUriString.IndexOf(","))

I don't know where you thought a comma existed in

Bundle[{android.intent.extra.STREAM=content://media/external/images/media/7859}]

but changing the line of code to

MyUriString = MyUriString.SubString2(MyUriString.IndexOf("=")+1,MyUriString.IndexOf("}"))

fixed it immediately.

Thanks!

The intent returned on my device, had another extra after this one, so it had a comma.
So you have to careful otherwise your code will not run on all devices (my code was only a demonstration not meant to be used in production-grade code).
Either way, the correct way is to use In.GetExtra which is not working for some reason.

 

[yttrium]

The intent returned on my device, had another extra after this one, so it had a comma.
So you have to careful otherwise your code will not run on all devices (my code was only a demonstration not meant to be used in production-grade code).
Either way, the correct way is to use In.GetExtra which is not working for some reason.

Can you show me the syntax of your Log(In.ExtrasToString) on your device?

 

[thedesolatesoul]

Can you show me the syntax of your Log(In.ExtrasToString) on your device?

Here:

Bundle[{android.intent.extra.STREAM=content://media/external/images/media/7935, exit_on_sent=true}]

 

[yttrium]

Here:

Bundle[{android.intent.extra.STREAM=content://media/external/images/media/7935, exit_on_sent=true}]

So then perhaps this?

MyUriString = In.ExtrasToString
MyUriString = MyUriString.SubString2(MyUriString.IndexOf("STREAM=")+1,MyUriString.IndexOf("}"))
If MyUriString.Contains(",") Then MyUriString = MyUriString.SubString2(0,MyUriString.IndexOf(","))

 

[thedesolatesoul]

Yes, that seems reasonably safe.

 

[yttrium]

Awesome. I'll probably put the comma line in a loop until there are no commas left.

And ugh, for some reason (I didn't change any code there!) I'm now getting the following error yet again:
http://www.b4x.com/forum/basic4andr...67-intent-filters-receiving-2.html#post164404

 

[yttrium]

Yes, that seems reasonably safe.

Turns out it's not. I am incredibly stupid:

MyUriString = In.ExtrasToString
MyUriString = MyUriString.SubString2(MyUriString.IndexOf("STREAM=")+1,MyUriString.IndexOf("}"))
If MyUriString.Contains(",") Then MyUriString = MyUriString.SubString2(0,MyUriString.IndexOf(","))

STREAM= is not 1 character.

MyUriString = In.ExtrasToString
MyUriString = MyUriString.SubString2(MyUriString.IndexOf("STREAM=")+7,MyUriString.IndexOf("}"))
If MyUriString.Contains(",") Then MyUriString = MyUriString.SubString2(0,MyUriString.IndexOf(","))

Error fixed and works perfectly, though I'm experimenting with Erel's answer as well (which replaces the whole GetPathFromContentResult function).