opening files in my app using intent in android.

[balaedit]

I had files for example 'file.swf'. While opening the file from file manager, file manager should popup my app in the popup list.
And how to get the selected file details in my app.
How it is possible?

[teotigraphix]

Something like:

https://developer.android.com/reference/androidx/core/content/FileProvider

might be what you are looking for. Basically you are registering a uri "type" that your app will handle(AndroidManifest) when open/edit etc is used, depending on your app. See the Google docs for the specifics.

[marchbold]

You need to edit the intent filters your application's main activity can receive. This intent filter determines what system intents you will appear for. Eg to receive a pdf file:

<activity>
  <!-- default launch filter (do not remove) -->
  <intent-filter>
      <action android:name="android.intent.action.MAIN"></action>
      <category android:name="android.intent.category.LAUNCHER"></category>
  </intent-filter>
  
  <!-- intent to receive pdf files -->
  <intent-filter>
    <category android:name="android.intent.category.DEFAULT" />
    <action android:name="android.intent.action.VIEW" />
    <action android:name="android.intent.action.EDIT"/>
    <data android:scheme="content" />
    <data android:mimeType="application/pdf" />
  </intent-filter>
</activity>

Note: this goes in your application descriptor manifest additions, inside the application node. There must be only one application node and one activity with no name / label which will be merged in with the main AIR activity.

You will need to research the values for the filter for your particular case.

[balaedit]

Thanks. Will check and test it.

[pol2095]

Since de last update of Android 13 on Pixel 7 Pro, it doesn't work.
My app is launched inside "Files by Google" (expected result : outside "Files by Google") and appear a black screen.
Other app like Google Chrome work.

[MalacTheLittle]

Android can be and is so confusing to noobs like me...

@marchbold's solution actually works but it has it limitations depending on which file browser app you're using. As I understand, in order the app to be considered to open specific file type from file browser, it depends on the way file browser parse app's <intent-filter>'s or how it query apps <intent-filter>'s.

I tried it on Xiaomi 12 Lite and with ES File Commander my app is offered, and with default File Manager my app isn't offered, but if I long press file and choose "More > Open in another app" my app is offered.

And AIR's File.openWithDefaultApplication() opens "Open with" without offering my app. I concluded that file browser is checking defined mimeType in intent-filter, and AIR wont show app if mimeType is defined.

So, here's my findings after two days of researching (tested od Lenovo Yoga tablet, Huawei P10 and Xiaomi 12 Lite (Android 4.4.2, 9 and 14)):

<activity>
	<!-- you can combine more separated intent-filters in activity to cover all your needs -->
	
	<!-- default launch filter -->
	<intent-filter>
		<action android:name="android.intent.action.MAIN"></action>
		<category android:name="android.intent.category.LAUNCHER"></category>
	</intent-filter>
	
	<!-- to be displayed in "Share via" dialog (specify exact mimeType your app can handle [png,jpeg,mp3...]) -->
	<intent-filter>
		<action android:name="android.intent.action.SEND" />
		<category android:name="android.intent.category.DEFAULT" />
		<data android:mimeType="image/png" />
	</intent-filter>
					
	<!-- to be displayed in file browser app "Open with" dialog (depending on apps settings) -->
	<intent-filter>
		<category android:name="android.intent.category.DEFAULT" />
		<action android:name="android.intent.action.VIEW" />
		<data android:mimeType="application/pdf" />
	</intent-filter>
	
	<!-- to be displayed in AIR "Open with" dialog (can also be used for custom extension) -->
	<!-- Remove all pathPatterns to be displayed in AIR "Open with" for any file extension. -->
	<intent-filter>
		<category android:name="android.intent.category.DEFAULT" />
		<action android:name="android.intent.action.VIEW" />
		<action android:name="android.intent.action.EDIT" />
		<data android:scheme="content" />
		<data android:host="*" />
		<data android:pathPattern=".*\\.pdf" />
		<data android:pathPattern=".*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.pdf" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.pdf" />
	</intent-filter>
	
	<!-- to be displayed in File Manager for custom file extension -->
	<!-- ES File Commander doesn't handle pathPattern, therefore this doesn't work for it. But it works for File Manager. -->
	<intent-filter>
		<category android:name="android.intent.category.DEFAULT" />
		<action android:name="android.intent.action.VIEW" />
		<action android:name="android.intent.action.EDIT" />
		<data android:scheme="content" />
		<data android:scheme="file" />
		<data android:mimeType="*/*" />
		<data android:host="*" />
		<data android:pathPattern=".myCustomExtension" />
		<data android:pathPattern=".*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.myCustomExtension" />
		<data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.myCustomExtension" />
	</intent-filter>
	
</activity>

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In addition, I use custom extension for simple communication between my apps, to pass arguments I combine them in file name:
App_A creates empty file with arguments combined in custom extension file name:

var file:File = File.applicationStorageDirectory.resolvePath("pub5,page81.myCustomCommunicationExtension");
var fs:FileStream = new FileStream();
fs.open(file, "write");
fs.close();
file.openWithDefaultApplication();

App_B is registered to open custom extension file name and when it gets IntentEvent, just read filename and parse arguments from it:

NativeApplication.nativeApplication.addEventListener(InvokeEvent.INVOKE, onInvoke);
function onInvoke(event:InvokeEvent):void{
	if(event.currentDirectory != null && event.arguments.length > 0){
		var invokeFile = event.currentDirectory.resolvePath(event.arguments[0]);
		var invokeArguments = invokeFile.name.split(".")[0];
		// process Invoke arguments...
	}
}