java - 如何在静态参数化方法中调用 Intent 并启动新 Activity

Question

我想在静态参数化方法中调用 Intent 并想从那里开始新 Activity 。我在我的 MainActivity 中使用名为 zodiacSign 的 mathod 调用，它有两个参数，它有效并调用另一个 Activity HoroscopeFinder。在其工作期间，我想打开一个新的 Activity 表单 HoroscopeFinder。如果有人知道请帮助。我的代码如下:

MainActivity 代码

 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 类代码

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);
    }

Answer 1

将您的 zodiacSign 方法更新为

   ........
   ........
   public static void zodiacSign(int day, int month, Context c)
   {
    if (...) {
        ....
        ...

        Intent intent=new Intent(c, AriesActivity.class);
        c.startActivity(intent);
       }
    } 

然后在 MainActivity 中将 context 传递给您的 zodiacSign 方法作为

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