main activity @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = getApplicationContext();
recyclerView = findViewById(R.id.recyclerview_student);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
buttonAddTask = findViewById(R.id.Fbutton_add);
buttonAddTask.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, addStudent.class);
startActivity(intent);
}
});
final getStudents getstudents = new getStudents(getApplicationContext());
getstudents.execute();
}
async task:
public class getStudents extends AsyncTask<Void, Void, List<Student>>
{
private Context mContext;
public getStudents(Context context)
{
mContext=context;
}
@Override
protected List<Student> doInBackground(Void... voids)
{
List<Student> studentList=
DatabaseClient.getInstance(mContext.getApplicationContext().);
return studentList;
I want to pass application context from main activity to a different java class file that implements asynctask. This is done in order to take away the adapter attaching from onPostExecute() in async task since doing that creates an while creating apk. what should i do ??
Pass it in the constructor, not as a method parameter. Then you don't need to depend on the generic parameters.
After Passing a Context object into the AsyncTask's constructor, like you already done and then, when you are constructing your AsyncTask
:
getStudents stud= new getStudents (this);
stud.execute(...);
another suggestion is to put your AsyncTask
class as a private inner class to your activity - that way I am pretty sure you will have access to getApplicationContext
().
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