Error non-default constructors in fragments

Question

I am dealing with maps apiv2. And I am getting the following error while coding for Dialog Fragment class.

Error : Avoid non-de

Answer 1

if you like to be out of rules just do next

@SuppressLint("ValidFragment")
public PlaceDialogFragment(Place place, DisplayMetrics dm){
        super();
        this.mPlace = place;
        this.mMetrics = dm;
    }

Answer 2

The easier way is to add these to the gradle:

android {
      lintOptions {
          checkReleaseBuilds false
      }
  }

Or you can add this line in each fragment

@SuppressLint("ValidFragment")
public PlaceDialogFragment(Place place, DisplayMetrics dm){
    super();
    this.mPlace = place;
    this.mMetrics = dm;
}

Best solution is add lines in gradle simply.

Answer 3

@SuppressLint({"NewApi", "ValidFragment"})
public PlaceDialogFragment(Place place, DisplayMetrics dm){
        super();
      }

Answer 4

solution worked for me

android {
          lintOptions {
              checkReleaseBuilds false
          }
      }

Answer 5

Because of the nature of fragment and how there managed and shown on your screen it's very recommended not to create a non default constructor and in many cases this would cause problems in run time. In case you should do something like this:

public static final GridFragment newInstance(String tabId)
{
    GridFragment f = new GridFragment();
    Bundle bdl = new Bundle(2);
    bdl.putString(TAB_ID, tabId);
    f.setArguments(bdl);
    return f;
}

and in onCreate extract the needed data from the bundle:

@Override
public void onCreate(Bundle savedInstanceState) 
{
    String tabId = getArguments().getString(TAB_ID);
    }

And take a look at this question as well:

Do fragments really need an empty constructor?