如何为Intent.ACTION_GET_CONTENT提供内容

Question

The web and stackoverflow contain several examples how to get a file from another Android app (eg, to use it as email attachment) using an ACTION_GET_CONTENT intent. But what kind of class do I have to implement to create an application providing content for the ACTION_GET_CONTENT event such as I can choose this app (eg, for selecting an email attachment).

Is a ContentProvider the right solution? And what do I have to add to my AndroidManifest.xml?

Answer 1

After some hours of web search I found the following solution.

1. Implement an Activity handling intents. Within, use the following or more specific code:

    Uri resultUri = // the thing to return Intent result = new Intent(); result.setData(resultUri); setResult(Activity.RESULT_OK, result); finish(); 

2. Add the following to the Manifest:

    <activity android:name="ActivityName" android:label="Some label" > <intent-filter> <action android:name="android.intent.action.GET_CONTENT" /> <category android:name="android.intent.category.OPENABLE" /> <category android:name="android.intent.category.DEFAULT" /> <data android:mimeType="*/*" /> </intent-filter> <intent-filter> <action android:name="android.intent.action.PICK" /> <category android:name="android.intent.category.DEFAULT" /> <data android:mimeType="*/*" /> </intent-filter> </activity> 

Answer 2

starting from api level 18 incoming intent can also have EXTRA_ALLOW_MULTIPLE set to true and in this case you can send back in result more than one file. To do so you need to set it as ClipData:

resultIntent.setClipData(clipData)