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Android Android Lists and Adapters (2015) Using Parcelable Data Retrieving Parcelable Data

Linton Mackereth
Linton Mackereth
4,764 Points

NullPointerException

Hi, I have received a Null Pointer Exception, when I click the 7 day button after implementing the Parcelable methods. The Log hints this relates to

Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
        mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);

However I think the issue relates to my onClickListener. I haven't been able to get ButterKnife to work so have tried to find alternatives to some of the videos...

Here is my onclicklistener:

dailyButton.setOnClickListener(new View.OnClickListener(){
            public void onClick(View v){
                startActivity(new Intent(MainActivity.this, DailyForecastsActivity.class));
                getIntent().putExtra(DAILY_FORECAST, mForecast .getDailyForecast());
            }
        });

Any ideas?? This has really stumped me!

Thanks,

Linton

1 Answer

Seth Kroger
Seth Kroger
56,405 Points

When you want to pass data to the next Activity you need to create the Intent and add the data to it first before calling startActivity. Otherwise you are starting a new Activity without any extra data.