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 manifest, com.WAPP is considered the base package:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.WAPP"
android:versionCode="1"
android:versionName="1.0">
My activities are declared in my manifest as:
<activity android:name=".mainScreenActivity"></activity>
<activity android:name=".SetLocation.setLocationActivity"></activity>
The mainScreen activity displays fine, since it is inside the com.WAPP package. But when I try to run the setLocationActivity, I get the unable to find explicit class error. Here is how I have the intent parameters:
Intent i = new Intent();
i.setClassName("com.WAPP.SetLocation",
"com.WAPP.SetLocation.setLocationActivity");
startActivity(i);
The first parameter is application package not the package where the activity is.
You can invoke the Activity like this.
Intent i = new Intent();
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(new Intent(this, setLocationActivity.class));
It's recommended per java standards to have the package name all lower-cased and the class name as CamelCased.