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I want to call Intent in a static parameterized method and wants to start new activity from there. I'm using a mathod call named as zodiacSign in my MainActivity with two parameters, it works and throw a call to another activity HoroscopeFinder. During its working I want to open a new activity form HoroscopeFinder. If someone knows please help. my code is given below:

MainActivity Code

 dateSetListener=new DatePickerDialog.OnDateSetListener(){ @Override public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) { //code month=month+1; String date= dayOfMonth+"/"+month+"/"+year; datePicker.setText(date); //from here we can get day and month String getDay= String.valueOf(dayOfMonth); getDayInt=Integer.parseInt(getDay); String getMonth= String.valueOf(month); getMonthInt=Integer.parseInt(getMonth); //method call for deduct sign using DOB zodiacSign(getDayInt, getMonthInt);}

HoroscopeFinder class code

public class HoroscopeFinder { static String astroSign=""; public static void zodiacSign(int day, int month) { //Toast.makeText(, "here done", Toast.LENGTH_LONG).show(); //Log.i("check", "done here...!"); if ((month == 12 && day >= 22 && day <= 31) || (month == 1 && day >= 1 && day <= 19)) { astroSign="Capricorn"; } else if ((month == 1 && day >= 20 && day <= 31) || (month == 2 && day >= 1 && day <= 17)) { astroSign="Aquarius"; //astro_sign="Aquarius"; } else if ((month == 2 && day >= 18 && day <= 29) || (month == 3 && day >= 1 && day <= 19)) { astroSign="Pisces"; } else ((month == 3 && day >= 20 && day <= 31) || (month == 4 && day >= 1 && day <= 19)) { astroSign="Aries"; Intent intent=new Intent(this, AriesActivity.class); startActivity(intent); }
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2 Answers 2

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Update your zodiacSign method as 

 ........ ........ public static void zodiacSign(int day, int month, Context c) { if (...) { .... ... Intent intent=new Intent(c, AriesActivity.class); c.startActivity(intent); } }

And then in MainActivity pass context to your zodiacSign method as

... zodiacSign(getDayInt, getMonthInt, MainActivity.this); // this context will help you there to start a new activity
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Comments

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You can pass an Activity to zodiacSign so it can construct and start the intent:

public static void zodiacSign(int day, int month, Activity activity) { if (...) { ... Intent intent=new Intent(activity, AriesActivity.class); activity.startActivity(intent); } }

Then, back in your MainActivity class:

... zodiacSign(getDayInt, getMonthInt, MainActivity.this);
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5 Comments

I think you only need a Context. You do not need an activity.
@doubleA - True, but then if it's passed a Context that is not an Activity, then the intent must include the Intent.FLAG_ACTIVITY_NEW_TASK launch flag and the activity will run in a new task. If you really want to accept any Context, you need to account for that possibility.
@doubleA i got your point but still didn't know How and which context i would have to pass in my function call?
@IrfanAkram - Pass the activity that is calling the zodiacSign method. The effect would be the same as if you called startActivity() from the main activity itself.
@IrfanAkram check out second answer. It is as intended.

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