“Activity not found” in Android

Question

I am using the navigation-drawer template in eclipse to do a simple Android application. I have some trouble with fragment. I declared a fragment called PresenceL

Answer 1

Please open the manifest file and declare like this:

<activity
        android:name=".MainActivity" //your activity name
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

if this is your lauch activity then do this otherwise do this

<activity
        android:name=".MainActivity"//your activity name
        android:label="@string/app_name" >
    </activity>

type the name of your java file which extends Activity not the Fargment. Means the Fragment which creates from that Activity java file.

Answer 2

 have you declared this activity in your AndroidManifest.xml?  

Look in your manifest and see if you have an <activity> element that has your activity registered. If not, add one.

Have a look here: http://developer.android.com/guide/topics/manifest/activity-element.html

Answer 3

 <activity
        android:name="com.singtel.ricecooker.PresenceLogFragment"
        android:label="@string/app_name" >
    </activity>

add this in your manifest file if com.singtel.ricecooker.PresenceLogFragment represents an activity and if it is a fragment then you are doing it wrong. in second case use below code,

getSupportFragmentManager()
.beginTransaction()
.replace(R.id.content_frame, new PresenceLogFragment())
.commit();

Answer 4

You have created a Fragment so you could not call it like a Activity. You need to replace a container view, properly an FrameLayout with your Fragment.

getSupportFragmentManager()
  .beginTransaction()
  .replace(R.id.content_frame, new PresenceLogFragment())
  .commit();

Answer 5

it is clear.

"have you declared this activity in your AndroidManifest.xml?"

you should check is there a tag。

see this or maybe this

Answer 6

You are trying to use a fragment as an activity. You can either rename PresenceLogFragment to PresenceLogActivity and have it extend Activity instead of Fragment or you can try and use your fragment as a fragment.

Also, any activity you try to use in your app needs to be declared in the manifest (link)

More about fragments and how to use them here