Java 一周中的某一天

我每周有一天。和2个按钮，我只需要设置第二天和前一天点击

switch (dayOfWeek) {

    case Calendar.MONDAY:

        text1.setText("some text for MONDAY"); 

        break;

    case Calendar.TUESDAY:
        text1.setText("some Text for TU");

        break;
    case Calendar.WEDNESDAY:
        text1.setText("WEn");

        break;
    case Calendar.THURSDAY:
        text1.setText("TH");

    etc..

和按钮

btnPlus.setOnClick...{
//from case1 to case2, from case2 to case3 etc

}
btnMnius.setOnCli..{
//from case1 to case7

}

我需要一个线圈

---

类似这样的事情

如果我能正确理解你，那一定是这样的：

 private void setDay(boolean dayIncrement){

      Calendar cal = Calendar.getInstance(); //get an instance of Calenar
      int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK); //get the current day

switch (dayOfWeek) {

         //if it is monday....
case Calendar.MONDAY:

    text1.setText("some text for MONDAY");

    //if the plus button is pressed, the boolean dayIncrement is true
    if(dayIncrement==true){

         //then set the day of Calendar to the next day
         cal.set(Calendar.DAY_OF_WEEK,Calendar.TUESDAY);

    //if the minus button is pressed, the boolean dayIncrement is false
    }else{

         //then set the day of Calendar to the previous day
         cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
     } 

    break;

case Calendar.TUESDAY:
    text1.setText("some Text for TU");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.WEDNESDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.MONDAY);
     }

    break;

case Calendar.WEDNESDAY:
    text1.setText("WEn");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.TUESDAY);
     }

    break;

case Calendar.THURSDAY:
    text1.setText("TH");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.WEDNESDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.FRIDAY);
     }

    break;

case Calendar.FRIDAY:
    text1.setText("Fri");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY);
     }
    break;

case Calendar.SATURDAY:
    text1.setText("SAT");

     if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.FRIDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
     }
    break;

case Calendar.SUNDAY:
    text1.setText("SAN");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.MONDAY);
     }
    break;
   }
}

创建如下方法：

 private void setDay(boolean dayIncrement){

      Calendar cal = Calendar.getInstance(); //get an instance of Calenar
      int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK); //get the current day

switch (dayOfWeek) {

         //if it is monday....
case Calendar.MONDAY:

    text1.setText("some text for MONDAY");

    //if the plus button is pressed, the boolean dayIncrement is true
    if(dayIncrement==true){

         //then set the day of Calendar to the next day
         cal.set(Calendar.DAY_OF_WEEK,Calendar.TUESDAY);

    //if the minus button is pressed, the boolean dayIncrement is false
    }else{

         //then set the day of Calendar to the previous day
         cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
     } 

    break;

case Calendar.TUESDAY:
    text1.setText("some Text for TU");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.WEDNESDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.MONDAY);
     }

    break;

case Calendar.WEDNESDAY:
    text1.setText("WEn");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.TUESDAY);
     }

    break;

case Calendar.THURSDAY:
    text1.setText("TH");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.WEDNESDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.FRIDAY);
     }

    break;

case Calendar.FRIDAY:
    text1.setText("Fri");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY);
     }
    break;

case Calendar.SATURDAY:
    text1.setText("SAT");

     if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.FRIDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY);
     }
    break;

case Calendar.SUNDAY:
    text1.setText("SAN");

    if(dayIncrement==true){

         cal.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY);

    }else{

         cal.set(Calendar.DAY_OF_WEEK,Calendar.MONDAY);
     }
    break;
   }
}

并在单击按钮的内部调用此方法

     yourPlusButton.setOnClickListener(new OnClickListener(){

              @Override
              public void onClick(View v){

                    setDay(true);
              }

      });



       yourMinusButton.setOnClickListener(new OnClickListener(){

              @Override
              public void onClick(View v){

                    setDay(false);
              }

      });

---

有谁能帮我回答这个问题吗。但是我不懂你的代码。我想简单地把所有天的一些staf和按钮+上，以查看第二天和第二天的数据。在按钮上-为你的时间上一天的人thx了很多。我以前试过这段代码，但现在不行了，我会试试这个。如果你只是把你的活动张贴在你做事情的地方，也许会有帮助。bajra@gmail.com请给我发电子邮件，我会把我的密码发送给thx