Question

我想在静态参数化方法中调用Intent，并希望从那里开始新的活动。我在我的 MainActivity 中使用了一个名为 zodiacSign 的mathod调用，该调用带有两个参数，它可以正常工作，并调用另一个活动 HoroscopeFinder 。在工作期间，我想打开一个新的活动表格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

您可以将Activity传递给zodiacSign，以便它可以构造和启动意图：

public static void zodiacSign(int day, int month, Activity activity)
{
    if (...) {

        ...

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

然后，回到您的MainActivity类：

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

Answer 2

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方法为

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

如何在静态参数化方法中调用Intent并启动新活动

2 个答案: