how to start an activity in another module explicitly

Question

I created an aar and i added it to my project as an module. in this module i have a HelloWorldActivity that i want to run.

my module manifest looks like this.

Answer 1

You can use the Class.forName(), it worked for me when i was needed to start activity which is in another module in my project.

 Intent intent = null;
    try {
        intent = new Intent(this, 
           Class.forName("ir.sibvas.testlibary1.HelloWorldActivity"));
        startActivity(intent);
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }

Answer 2

Intent intent = new Intent();
intent.setClassName(context.getPackageName(), "ir.sibvas.testlibary1.HelloWorldActivity");
startActivity(intent);

Answer 3

The explicit assignment:

Intent intent = new Intent(this, HelloWorldActivity.class);
startActivity(intent);

should work fine provided you have added the import for HelloWorldActivity.class with the full package name of your module viz. ir.sibvas.testlibary1.HelloWorldActivity

Answer 4

first module activity launch then second module activity launch and write a line of code is perfectly fine.

 Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.your.packagename");
            if (launchIntent != null) {
                startActivity(launchIntent);//null pointer check in case package name was not found
            }