What is the basic difference between these two toast?

Question

Toast.makeText(MainActivity.this,"YOUR MESSAGE",Toast.LENGTH_LONG).show();

Toast.makeText(getApplicationContext(),String.valueOf(sum),Toast.LENGTH_LONG).show();

why in the above statement MainActivity.this is used and getApplicationcontext() in another one and what do they do?

Sagar · Answer 1 · 2018-07-18T08:44:36.053

1

There is not much difference as such, Toast.makeText basically needs a Context obj as first parameter. Since deep in the Hierarchy Activity extends Context, passing either activityObj.this or getApplicationContext() should do the trick.

However you need to understand the usage of getApplicationContext() which has key differentiator, based on the documentation for getApplicationContext() :

Return the context of the single, global Application object of the current process. This generally should only be used if you need a Context whose lifecycle is separate from the current context, that is tied to the lifetime of the process rather than the current component.

Where as Activity context is associated with to the activity and can be destroyed if the activity is destroyed -- there may be multiple activities (more than likely) with a single application. You can follow this SO for more details

edited Jul 18 '18 at 08:44

answered Jul 18 '18 at 08:43

Sagar

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Sorry i didn't get your point – Dhruv Jul 18 '18 at 08:44
@Dhruv The point is, `getApplicationContext()` returns `Context` and `MainActivity.this` is also object of type Context since indirectly `MainActivity` extends `Context` – Sagar Jul 18 '18 at 08:45
thanks now i get it. – Dhruv Jul 19 '18 at 13:20
@Dhruv remember to mark answer as accepted if it was useful – Sagar Jul 20 '18 at 00:11

What is the basic difference between these two toast?

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