Filter without action

Question

The Android documentation says:

http://developer.android.com/reference/android/content/IntentFilter.html

"An action matches if any of the given values ​​matches the Intent action or if no actions were specified in the filter."

I just tried to check it out. In my test application, I set this filter for one of the actions:

<intent-filter>
    <action android:name="ma" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="mk1" />
</intent-filter>

I am trying to send such an intention:

Intent i = new Intent();
i.setAction("ma");
i.addCategory("mk1");
startActivity(i);

It works - my work begins.

Then I will comment on the action in the filter:

<intent-filter>
    <!-- <action android:name="ma" /> -->
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="mk1" />
</intent-filter>

Again I send the same intention. Now my activity does not begin.

Why? According to the documentation, when my filter didn’t indicate any actions, the intention with some actions should fill it.

Answer 1

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Answer 2

i.setAction("ma"); .