日曆視圖onclick監聽器今天的日期不起作用

Question

如何爲日曆視圖設置onclick監聽器「TODAYS DATE」？該代碼適用於onclick昨天的日期或明天的日期，但它不適用於今天的日期？有人可以幫忙嗎？

代碼：

MainActivity.java：

final CalendarView calendarview=(CalendarView)findViewById(R.id.Calendarview); 
final Button selectDate=(Button)findViewById(R.id.Date_seletcion_btn); 

selectDate.setOnClickListener(new View.OnClickListener() { 

@Override 
public void onClick(View arg0) { 
// TODO Auto-generated method stub 

calendarview.setVisibility(View.VISIBLE); 


} 
}); 

calendarview.setClickable(true); 

//calendarview.getSelectedDateVerticalBar(); 
/*calendarview.setOnDateChangeListener(new CalendarView.OnDateChangeListener() { 

@Override 
public void onSelectedDayChange(CalendarView calendarview, int year, int month, 
int day) { 
// TODO Auto-generated method stub 
int day1, month1, year1; 

day1=day; 
month1=month; 
year1=year; 


Calendar calendar=Calendar.getInstance(); 


clickeddate=calendarview.getDate(); 
calendar.setTimeInMillis(clickeddate); 

//ArrayList<> array=calendar.getTouchables(); 

Toast.makeText(getApplicationContext(), "Date Selected: " + day,Toast.LENGTH_LONG).show(); 


Intent homein=new Intent(getApplicationContext(),HomePageActivity.class); 

homein.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 

homein.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 

startActivity(homein); 
finish(); 

} 
}); */ 

** XML代碼：**

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+id/Calendar_layout" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:layout_marginTop="120dp" 
android:gravity="center_horizontal" 
android:orientation="vertical" > 

<!-- 
<LinearLayout 
android:id="@+id/Calendar_layout" 
android:layout_width="match_parent" 
android:layout_height="match_parent"></LinearLayout> 
--> 

<Button 
android:id="@+id/Date_seletcion_btn" 
style="?android:attr/borderlessButtonStyle" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_marginBottom="20dp" 
android:layout_marginTop="20dp" 
android:background="@drawable/button_states" 
android:text="@string/calendarselection" /> 

<!-- 
<DatePicker 
android:id="@+id/datepicker" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:visibility="gone" 
/> 
--> 

<CalendarView 
android:id="@+id/Calendarview" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:layout_marginBottom="20dp" 
android:layout_marginLeft="20dp" 
android:layout_marginRight="20dp" 
android:visibility="gone" 
android:clickable="true" /> 


</LinearLayout> 

Answer 1

對話框類需要betterpickers libary

public class DateDialog { 

private static final SimpleDateFormat sSDF = new SimpleDateFormat("EEE", Locale.US); 
private CalendarDatePickerDialog mDialog; 
private FragmentManager mFragmentManager; 

public DateDialog(FragmentManager fm, OnDateSetListener listener) { 
    mFragmentManager = fm; 
    Calendar c = Calendar.getInstance(); 
    String EEE = sSDF.format(c.getTime()); 
    if (EEE.contains("Sun")) { 
     c.set(Calendar.DAY_OF_MONTH, -2); 
    } 

    mDialog = CalendarDatePickerDialog.newInstance(listener, c.get(Calendar.YEAR), c.get(Calendar.MONTH), 
      c.get(Calendar.DAY_OF_MONTH)); 
} 

public void show() { 
    mDialog.show(mFragmentManager, "calendarDialog"); 
} 
} 

//否則創建BaseActivity類

public abstract class BaseActivity extends FragmentActivity { 
private final SimpleDateFormat sSDF = new SimpleDateFormat("EEE", Locale.US); 
    public void showCalendarDialog(OnDateSetListener listener, FragmentManager fm) { 
    Calendar c = Calendar.getInstance(); 
    String EEE = sSDF.format(c.getTime()); 
    if (EEE.contains("Sun")) { 
     c.set(Calendar.DAY_OF_MONTH, -2); 
    } 

CalendarDatePickerDialog mDialog = CalendarDatePickerDialog.newInstance(listener, c.get(Calendar.YEAR),c.get(Calendar.MONTH),c.get(Calendar.DAY_OF_MONTH)); 
    mDialog.setCancelable(true); 
    mDialog.show(fm, FRAG_TAG_DATE_PICKER); 
} 
} 

MainActivity.class

MainActivity extends FragmentActivity implements OnDateSetListener{ 
private static final SimpleDateFormat sSDF_dmye = new SimpleDateFormat("dd/MM/yyyy  (EEE)", Locale.US); 
//call method when you want to click this action listener 
     //call this mothod on btn click action 

     e.g showCalendarDialog(this, getSupportFragmentManager()); 


    } 

Answer 2

正如名字setOnDateChangeListener說，這種方法被調用時，更改日曆上的日期。無論今天與否都無關緊要。當您打開日曆視圖時，默認顯示今天的日期。所以當你點擊「今天」時，方法就不會被調用。因爲沒有變化。選擇另一個日期，然後嘗試選擇「今天」。所以這個方法被稱爲變化。 In SO, this question was already answered。只需創建您將在以後使用的自定義CalendarView類。

Answer 3

OnGlobalLayoutListener會做的伎倆。 所以，如果你嘗試：

calendarView.getViewTreeObserver().addOnGlobalLayoutListener(
    new ViewTreeObserver.OnGlobalLayoutListener(){ 
     @Override 
     public void onGlobalLayout() 
     {} 
    }); 

Answer 4

Calendar disabledCal = Calendar.getInstance(); 
disabledCal.set(Calendar.DATE, disabledCal.get(Calendar.DATE) - 1);