Question

• I am creating an app that requires some settings to be set first
  before starting the display activity.
  I would like the app to check if a preference file (that contains these settings) exists and if it does exist move to a
  particular activity or remain in the main activity(as the settings
  activity is my main activity).

• I tried to use startactivty() on startup, but it shows the settings
  menu for a fraction of a second before moving on to the display
  activity.

• how should I do it?

  I tried the following code:

      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);          
          SharedPreferences prefsfile = getSharedPreferences("myfile",0); 
  
          if( prefsfile!=null & Timetablledisplay.flag==0){
              Intent i=new Intent(ProjectBunkitActivity.this,Timetablledisplay.class);
              startActivity(i);
          }
  

Answer 1

An option for a potential workaround for this problem would be taking a slightly different approach:

Instead of launching into Settings, and then deciding whether or not to go to the Timetablleddisplay activity, you could start in a blank activity that simply decides which activity to launch.

The activity could be something like this:

super.onCreate(savedInstanceState);      
    SharedPreferences prefsfile = getSharedPreferences("myfile",0); 

    if( prefsfile!=null && Timetablledisplay.flag==0){
        Intent i=new Intent(CURRENT.this,Timetablledisplay.class);
        startActivity(i);
        finish();
    }
    else
    {
        Intent i=new Intent(CURRENT.this,ProjectBunkitActivity.class);
        startActivity(i);
        finish();
    }