如何重用代碼

Question

所以這是我的提醒應用程序屏幕截圖，因爲您可以看到它有一個+按鈕和一個按鈕。當+按鈕被粘住時，將顯示帶有editText的對話框。

@Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 
      case R.id.action_add_task: 
       mClickedPosition = -1; 
       final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
       LayoutInflater inflater = LayoutInflater.from(getActivity()); 
       View promptView = getActivity().getLayoutInflater().inflate(R.layout.dialog_with_edittext, null); 
       Button cancel = (Button) promptView.findViewById(R.id.cancelBtn); 
       Button save = (Button) promptView.findViewById(R.id.okBtn); 
       task = (EditText) promptView.findViewById(R.id.task); 
       time = (EditText) promptView.findViewById(R.id.time); 
       date = (EditText) promptView.findViewById(R.id.date); 
       final AlertDialog alert = builder.create(); 
       date.setOnClickListener(this); 

       time.setOnClickListener(new View.OnClickListener() { 
        public void onClick(View v) { 
         Fragment fragDialog = getActivity().getSupportFragmentManager().findFragmentByTag("TimePicker"); 
         if (fragDialog == null) { // Fragment not added 
          FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction(); 
          tp.show(ft, "TimePicker"); 
         } else { 
          // already active 
         } 
        } 
       }); 

       cancel.setOnClickListener(new View.OnClickListener() { 
        public void onClick(View v) { 
         alert.dismiss(); 
        } 
       }); 

       save.setOnClickListener(new View.OnClickListener() { 
        public void onClick(View v) { 
         String addTask = task.getText().toString(); 
         String time1 = time.getText().toString(); 
         String date1 = date.getText().toString(); 
         if ((time1.trim().equals(""))|| (date1.trim().equals(""))|| (addTask.trim().equals(""))) { 
          Toast.makeText(getActivity(), " Not Completed", Toast.LENGTH_SHORT).show(); 
         } 
         else { 
          if (adapter != null) { 
           if (mClickedPosition == -1) { 
            adapter.add(iD, addTask, time1, date1); 
            insertTask(addTask, time1, date1); 
            listview.setAdapter(adapter); 
            alert.dismiss(); 
            check(); 
            retrieveList(name); 
           } 
          } 

          Calendar alarm = Calendar.getInstance(); 
          Calendar copy = (Calendar) alarm.clone(); 
          alarm.set(Calendar.YEAR, year1); 
          alarm.set(Calendar.MONTH, month1); 
          alarm.set(Calendar.DAY_OF_MONTH, day1); 
          alarm.set(Calendar.HOUR_OF_DAY, hour1); 
          alarm.set(Calendar.MINUTE, min1); 
          int result = alarm.compareTo(copy); 

          if(result < 0) { 
           alarm.add(Calendar.DATE, 1); 
          } 
          else 
          { 
           Intent myIntent = new Intent(getActivity(), MyReceiver.class); 
           pendingIntent = PendingIntent.getBroadcast(getActivity(), 0, myIntent, 0); 
           AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(getActivity().ALARM_SERVICE); 
           alarmManager.set(AlarmManager.RTC, alarm.getTimeInMillis(), pendingIntent); 
          } 
         } 
        } 
       }); 

       alert.setView(promptView); 
       alert.show(); 
       return true; 

如果點擊該按鈕，會打開對話框完全相同的+按鈕。我現在的問題是，有沒有一種方法可以重複使用代碼，以便代碼看起來更短一些，或者我必須複製代碼並粘貼到按鈕onClick？

向您展示我的完整活動代碼。正如你所看到的，大部分代碼是相同的（+按鈕，按鈕也ListView中點擊）

http://pastebin.com/HEKcmVK3

Answer 1

您可以創建這部分代碼的方法，然後就調用該方法的onclicklistener

String addTask = task.getText().toString(); 
String time1 = time.getText().toString(); 
String date1 = date.getText().toString(); 
if ((time1.trim().equals(""))|| (date1.trim().equals(""))|| (addTask.trim().equals(""))) { 
    Toast.makeText(getActivity(), " Not Completed", Toast.LENGTH_SHORT).show(); 
} 
else { 
    if (adapter != null) { 
     if (mClickedPosition == -1) { 
      adapter.add(iD, addTask, time1, date1); 
      insertTask(addTask, time1, date1); 
      listview.setAdapter(adapter); 
      alert.dismiss(); 
      check(); 
      retrieveList(name); 
     } 
    } 

    Calendar alarm = Calendar.getInstance(); 
    Calendar copy = (Calendar) alarm.clone(); 
    alarm.set(Calendar.YEAR, year1); 
    alarm.set(Calendar.MONTH, month1); 
    alarm.set(Calendar.DAY_OF_MONTH, day1); 
    alarm.set(Calendar.HOUR_OF_DAY, hour1); 
    alarm.set(Calendar.MINUTE, min1); 
    int result = alarm.compareTo(copy); 

    if(result < 0) { 
     alarm.add(Calendar.DATE, 1); 
    } 
    else 
    { 
     Intent myIntent = new Intent(getActivity(), MyReceiver.class); 
     pendingIntent = PendingIntent.getBroadcast(getActivity(), 0, myIntent, 0); 
     AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(getActivity().ALARM_SERVICE); 
     alarmManager.set(AlarmManager.RTC, alarm.getTimeInMillis(), pendingIntent); 
    } 
} 

Answer 2

你需要做的是通過創建一個自定義對話框類，寫視圖方法。 然後在+和按鈕單擊中，創建該類的一個實例並顯示它。