Set the ID of the button to something you will remember. How to start a new activity using intent? The default settings will name this activity as ‘Main2Activity’. Another really easy way of doing this is from your project sidebar. Menu -> File -> New -> Activity -> Empty Activity. How to create a new activity in Android Studio?

Also check your menifest file for the activities declaration. here while setting the value key is “EXTRA_MESSAGE” and while getting “” so you will get null pointer exception. So key value should be the same at the time of setting and getting the value. Once you have your objects implement Parcelable it’s just a matter of putting them into your Intents with putExtra (): Then you can pull them back out with getParcelableExtra (): Observe that in the case you have more than one field to retrieve from a given Parcel, you must do this in the same order you put them in (that is, in a FIFO approach). How to send an object from one Android activity to another?

That mean we can perform any action that we may need, depending on our application specifications. We just need to register click event with buttons and then implement the onClickListener call back methods. The OnclickListener interface is used by object of mainActivity to call some method or perform some activity when button is clicked. But in this method our inner class, which is MrBoolHandler implements the interface, so we need to pass the object of Mrboolhandler class. I already tried: Intent intent = new Intent (v.getContext (), ShowDefinition.class) But then I startet the intent with startActivit (intent).Īs already discussed setOclickListener () methods takes argument of class that implements the OclickListner Interface. Then implement onClick like this: That actually does the trick. Here, we are creating an object ‘i’ of the class intent, and then we are passing two parameters.Īny view that is already part of the activity (like the ListView) has access to the ListActivity instance via getContext (). I have a button on the first one and I want to show the second when it is clicked, but I get an error.Firstly the function name, ‘buttonClick,’ is the same name you gave the button in the properties under onClick. In my Android application, I have two activity classes.

How to do intent android studio