Do we need extra information about activity class in manifest?

Question

I am talking about <action android:name="packagename.ImagePagerActivity" />. It's seems unnessesary to add it, because the application works fine without it. But why do some developers write such reference?

<activity
            android:name=".adapter.imageview.ImagePagerActivity"
            android:screenOrientation="portrait"
            android:theme="@android:style/Theme.Light.NoTitleBar" >
            <intent-filter>
                <action android:name="packagename.ImagePagerActivity" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

score 0 · Accepted Answer · edited May 23 '17 at 10:25

0

Using <action android:name="packagename.ImagePagerActivity" /> Says that you can call this Activity Implicitly

Like

Intent intent = new Intent("packagename.ImagePagerActivity");
startActivity(intent);

Read more about What is the different between Explicit and implicit activity call in android?

edited May 23 '17 at 10:25

Community

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answered Jul 08 '13 at 12:47

Pankaj Kumar

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score 0 · Answer 2 · answered Jul 08 '13 at 12:54

0

If you mention

you can invoke your activity from

intent.setAction("packagename.ImagePagerActivity");

and start activity.

Implicit call instead of mentioning current activity and target activity explicitly.

answered Jul 08 '13 at 12:54

Desu

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Do we need extra information about activity class in manifest?

2 Answers2