getActivity() where it is defined?

Question

I\'m very new to android and I\'m following this example.

The code says we need to do these steps to get an dialog box:

AlertDialog.Builder builder =         


        

Answer 1

getActivity when you use then no need to put new... such as

PendingIntent pi=new PendingIntent.getActivity(this,0,intent,0); //is wrong

user it as :

PendingIntent pi=PendingIntent.getActivity(this,0,intent,0); //is Right code

here we remove new that provide new allocation but here it provide its allocation via getActivity in with in Activity(this).

Answer 2

getActivity() is implemented in the Fragment class.

See http://developer.android.com/reference/android/app/Fragment.html

Answer 3

// 1. Instantiate an AlertDialog.Builder with its constructor

AlertDialog.Builder builder = new AlertDialog.Builder(yourActivityName.this);

// 2. Chain together various setter methods to set the dialog characteristics

builder.setMessage(R.string.dialog_message).setTitle(R.string.dialog_title);

// 3. Get the AlertDialog from create()

AlertDialog dialog = builder.create();

// 4. Show the AlertDialog

dialog.show();

Answer 4

new AlertDialog.Builder() needs Context as input parameter. So try like

AlertDialog.Builder builder = new AlertDialog.Builder(yourActivityName.this);

Answer 5

The constructor AlertDialog.Builder expects a Context parameter. Context is accessible from Activity, Service etc, since they all extend Context, and can be passed as this.

The method getActivity() is declared as others have mentiond in the Fragment class.