getApplicationContext() as a activity to excute runOnUiThread()?

Question

 ((Activity)getApplicationContext()).runOnUiThread(new Runnable() {
        @Override
        public void run() {

        }
    });

This code is right? I get a trouble to think it!

I think so,but I don't know if this code is excuted successfully @tyczj — zys, Mar 15 '16 at 14:38

score 1 · Answer 1 · edited May 23 '17 at 11:45

1

See this answer: https://stackoverflow.com/a/6760019/923441

You should definitely NOT cast getApplicationContext() to Actvity, it is not guaranteed to work and such programming will lead to crashes down the line.

edited May 23 '17 at 11:45

Community

1
1

answered Mar 15 '16 at 14:43

A. Steenbergen

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score 1 · Accepted Answer · answered Mar 15 '16 at 14:50

runOnUiThread() it's a method from Activity so if you are on an Activity you can avoid this : ((Activity)getApplicationContext()), but if you are on a Fragment, you'll need to get the first your Activity and then call this method, otherwise you won't be able to call it.

You should change this : ((Activity)getApplicationContext())

to this :

getActivity().runOnUiThread(new Runnable() {
    @Override
    public void run() {

    }
});

It can throw you a ClassCastException as Blackbelt said in comments.

getApplicationContext() as a activity to excute runOnUiThread()?

2 Answers2