Android Error "unable To Find Explicit Activity Class"

I have an android project with several packages. The structure of the packages in this case is com.WAPP.SetLocation is the package that contains the activity I want to run. In my m

Solution 1:

The first parameter is application package not the package where the activity is.

You can invoke the Activity like this.

Intenti=newIntent();
i.setClassName("com.WAPP",
               "com.WAPP.SetLocation.setLocationActivity");
startActivity(i);

It is preferred as SYLARRR suggested to have Android automatically figure that out for you. Hence the call as..

startActivity(newIntent(this, setLocationActivity.class));

It's recommended per java standards to have the package name all lower-cased and the class name as CamelCased.

Solution 2:

If the new activity not in the same packet with MainActivity(you call from here?), try declare on manifest

<activityandroid:name="com.WAPP.SetLocation.setLocationActivity"></activity>

and in the caller

Intent intent = newIntent(this, setLocationActivity.class);
startActivity(intent);

Hope this helps!

Solution 3:

In additional to the above answers make sure that your activities are declared inside application in manifest

<applicationandroid:allowBackup="true"android:label="@string/app_name"android:supportsRtl="true"><activityandroid:name=".mainScreenActivity"></activity><activityandroid:name=".SetLocation.setLocationActivity"></activity></application>

Solution 4:

If i'm not mistaken, the i.setClassName("com.WAPP.SetLocation","com.WAPP.SetLocation.setLocationActivity"); should be i.setClassName(getBaseContext(),"setLocationActivity");Reference

Also try this syntax:

startActivity(newIntent(MyActivity.this, setLocationActivity.class));

and try removing the starting dot from:

<activityandroid:name=".SetLocation.setLocationActivity"></activity>

Solution 5:

Do it by this way:

Intentintent=newIntent();
intent.setComponent(
        newComponentName("com.WAPP", "com.WAPP.SetLocation.setLocationActivity"));
startActivity(i);