Android: Non-static method cannot be referenced from a static context

Question

I have searched the internet high and low for the answer to this error:

Non-static method 'getStringExtra(java.lang.String)' cannot be referenced from a static context

I have not found anything so I have come here. Here is the code I use for adding the info as extras:

Intent OpenList = new Intent(this, ListRandom.class); OpenList.putExtra("ListItem1",List.get(1)); OpenList.putExtra("ListItem2", List.get(2)); OpenList.putExtra("ListItem3", List.get(3)); OpenList.putExtra("ListItem4",List.get(4)); OpenList.putExtra("ListItem5", List.get(5));

And here is getting the Extras, where I get the error:

 Intent OpenList = getIntent(); ListItem1 = Intent.getStringExtra("ListItem1"); ListItem2 = Intent.getStringExtra("ListItem2"); ListItem3 = Intent.getStringExtra("ListItem3"); ListItem4 = Intent.getStringExtra("ListItem4"); ListItem5 = Intent.getStringExtra("ListItem5");

Any help would be appreciated as I am growing as a programmer!

duplicate of What is the reason behind "non-static method cannot be referenced from a static context"? and stackoverflow.com/questions/4922145/… and stackoverflow.com/questions/2694566/… and stackoverflow.com/questions/5972764/… — CommonsWare
– CommonsWare, Commented Jun 17, 2013 at 23:03

codeMagic · Accepted Answer · 2013-06-17 23:09:52Z

Change

 Intent OpenList = getIntent(); ListItem1 = Intent.getStringExtra("ListItem1"); ListItem2 = Intent.getStringExtra("ListItem2"); ListItem3 = Intent.getStringExtra("ListItem3"); ListItem4 = Intent.getStringExtra("ListItem4"); ListItem5 = Intent.getStringExtra("ListItem5");

to

 Intent OpenList = getIntent(); ListItem1 = OpenList.getStringExtra("ListItem1"); ListItem2 = OpenList.getStringExtra("ListItem2"); ListItem3 = OpenList.getStringExtra("ListItem3"); ListItem4 = OpenList.getStringExtra("ListItem4"); ListItem5 = OpenList.getStringExtra("ListItem5");

Use the Intent object that you created here

Intent OpenList = getIntent();

Just like any other class, using Intent.getStringExtra("words"); is calling it in a static way and if you look at the Intent Docs getStringExtra(String name) is not a static method so you create an instance if Intent with Intent OpenLIst = getIntent();

Also, to stick with Java programming standards you should use mixed-case for your variable names so OpenList would be openList and ListItem1 would be listItem1. This isn't necessary for compiling obviously but its a good idea to try and stick to standards

Step_Wisdom · Accepted Answer · 2017-07-12 12:26:33Z

When you write:

 ListItem1 = Intent.getStringExtra("ListItem1");

You are using a method (i.e. getStringExtra(String name)) on a class (i.e. Intent), which is a static approach.

Instead, you should use a method on an object (i.e. OpenList) for a non-static approach.

Thus, your code should be changed to:

 ListItem1 = OpenList.getStringExtra("ListItem1");

And be applied to ListItem2, ListItem3, and so on.

OpenList

Collectives™ on Stack Overflow

Android: Non-static method cannot be referenced from a static context

2 Answers 2

Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Linked

Related