如何将日历中的日期传递给其他活动[Android]

问题描述：

我无法将日历从日历传递到其他活动。这不是我想要显示的当前日期，而是用户在我编码的日历上选择的日期。
以下是我的代码。如何将日历中的日期传递给其他活动[Android]

      @Override 
       public void onClick(View view) 
       { 
        String date_month_year = (String)view.getTag(); 
        selectedDayMonthYearButton.setText(new StringBuilder().append("Selected:").append(date_month_year)); 

        Intent k = new Intent(Calendar_Event.this, Create_Events.class); 
       startActivity(k); 

        try 
        { 
         Date parsedDate = dateFormatter.parse(date_month_year); 
         Log.d(tag, "Parsed Date: " + parsedDate.toString()); 
        } 
        catch(ParseException e) 
        { 
         e.printStackTrace(); 
        } 
       } 


       public int getCurrentDayOfMonth() 
        { 
         return currentDayOfMonth; 
        } 

       private void setCurrentDayOfMonth(int currentDayOfMonth) 
        { 
         this.currentDayOfMonth = currentDayOfMonth; 
        } 
       public void setCurrentWeekDay(int currentWeekDay) 
        { 
         this.currentWeekDay = currentWeekDay; 
        } 
       public int getCurrentWeekDay() 
        { 
         return currentWeekDay; 
        } 

     }//end GridCellAdapter

我试着将选定的onClick日期传递给这个类链接到的下一个活动。
任何帮助将不胜感激，谢谢你！

答

使用Intent.putExtra(String date)将活动从一个活动传递到另一个活动。更改按钮单击代码作为Calendar_Event.class：

在Calendar_Event活动：

//Create new Intent Object, and specify class 
Intent intent = new Intent(); 

intent.setClass(Calendar_Event.this,Create_Events.class); 

intent.putExtra("passdate","Date_var_here"); 

Calendar_Event.this.startActivity(intent);

在Create_Events活动：

//obtain Intent Object send from SenderActivity 
    Intent intent = this.getIntent(); 

    /* Obtain String from Intent */ 
    if(intent !=null) 
    { 
    String strdata = intent.getExtras().getString("passdate"); 
    // DO SOMETHING HERE 
    } 
    else 
    { 
    // DO SOMETHING HERE 
    }

嘿它的工作！非常感谢（： – Preeyah 2012-08-02 04:22:35

答

考虑到日历变量转换为长致电getTimeInMillis()

/* GetDateActivity.java */ 

Intent intent = new Intent(); 

Calendar myDate = Calendar.getInstance(); 
myDate.set(Calendar.YEAR, 1970); 
myDate.set(Calendar.MONTH, 1); 
myDate.set(Calendar.DAY_OF_MONTH, 1); 

intent.putExtra("myDateKey", myDate.getTimeInMillis()); 
setResult(RESULT_OK, intent); 
// Terminate current activity 
finish();

然后，内部活动，要求startActivityForResult(intent)，即MainActivity.java

public static final int REQUEST_DATE_CODE = 777; 

... 

Intent i = new Intent(MainActivity.class, GetDateActivity.class); 
startActivityForResult(i, REQUEST_DATE_CODE); 

... 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    switch (requestCode) { 
     case REQUEST_DATE_CODE: 
      if (resultCode == RESULT_OK && data != null) { 

       Calendar myDate = Calendar.getInstance(); 
       myDate.setTimeInMillis(extras.getLong("myDateKey")); 

       Date date = myDate.getTime(); 
       SimpleDateFormat simpleDateFormatter = new SimpleDateFormat("EEE, MMM d, ''yy", Locale.getDefault()); 
       Log.d(tag, "Parsed Date: " + simpleDateFormatter.format(date)); 
      } 
      break; 
    } 
}

如何将日历中的日期传递给其他活动[Android]

相关推荐