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Android

Posted by Morgan Davis
Morgan Davis
Courses Plus Student 336 Points

Best way to implement a swipe to refresh in the new Stormy weather app?

I'm having issues adding in a swipe to refresh gesture on the weather app course as a little extra credit. I've got the code figured out for the XML file activity_main but I'm having issues setting up the adapter for the MainActivity.java, has anyone else been able to get this accomplished? Please help a newb out! Ben Jakuben

2 Answers

Ben Jakuben
STAFF
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

I have just the thing that might help from another course (later in the track): Adding a SwipeToRefresh Gesture.

Morgan Davis
Morgan Davis
Courses Plus Student 336 Points

Ben, thank you so much for the quick reply! Only question I have is with the changes in the new api 21, will all of this still work? Issue I'm having is 1. It gives me an error using rootView in "mSwipeRefreshLayout = (SwipeRefreshLayout)rootView.findViewbyID(R.id.swipeRefreshLayout);". Might be easier if I just paste what I have, if that's okay.

ListView mListView;
    Adapter mAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mSwipeRefreshLayout = (SwipeRefreshLayout)rootView.findViewbyID(R.id.swipeRefreshLayout);
        mSwipeRefreshLayout.setOnRefreshListener(mOnRefreshListener);
        mSwipeRefreshLayout.setColorSchemeColors(
                R.color.swipeRefresh1,
                R.color.swipeRefresh2,
                R.color.swipeRefresh3);

        mListView = (ListView) findViewById(R.id.activity_main_listview);

        ButterKnife.inject(this);

        mProgressBar.setVisibility(View.INVISIBLE);

        final double latitude = 36.3114;
        final double longitude = -86.6533;

        mRefreshImageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getForecast(latitude, longitude);
            }
        });

........ then at the bottom of the MainActivity.java I have this

    protected SwipeRefreshLayout.OnRefreshListener mOnRefreshListener = new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            Toast.makeText(getActivity());
        }
    };
}
Ben Jakuben
STAFF
Ben Jakuben
Treehouse Teacher
Ben Jakuben
Ben Jakuben
Treehouse Teacher

Since you are calling directly from an Activity class, you don't have or need a rootView in this line of code.

mSwipeRefreshLayout = (SwipeRefreshLayout)rootView.findViewbyID(R.id.swipeRefreshLayout);

Try this instead:

mSwipeRefreshLayout = (SwipeRefreshLayout) findViewbyID(R.id.swipeRefreshLayout);