android - 如何将日期选择器文本框日期限制为 future 日期。它应该只允许以前的日期

Question

我想限制日期选择器将日期设置为高于系统当前日期。告诉我如何验证日期选择器日期。

Answer 1

Create Custom Dialog an show toat on date greater then current date


final Dialog dialog = new Dialog(SettingActivity.this);
                dialog.setContentView(R.layout.date_picker_view);
                dialog.setTitle("Select Date");
                final TextView tvTime = (TextView) dialog
                        .findViewById(R.id.tv_time);
                final DatePicker datePicker = (DatePicker) dialog
                        .findViewById`enter code here`(R.id.datePicker1);
                Button set = (Button) dialog.findViewById(R.id.button_time_set);
                Button cancel = (Button) dialog
                        .findViewById(R.id.button_time_cancel);

                datePicker
                        .setDescendantFocusability(DatePicker.FOCUS_BLOCK_DESCENDANTS);

                Calendar  originalDate=Calendar.getInstance();
                 Calendar previousWeekDay = (Calendar) originalDate.clone();
                  previousWeekDay.add(Calendar.YEAR, -35);
                  previousWeekDay.set(Calendar.MONTH, 0);
                  previousWeekDay.set(Calendar.DAY_OF_MONTH, 1);

                  datePicker.init(previousWeekDay.get(Calendar.YEAR), previousWeekDay.get(Calendar.MONTH), previousWeekDay.get(Calendar.DAY_OF_MONTH), null);

                final Calendar calendar = Calendar.getInstance();
                final int mDay = calendar
                        .get(Calendar.DAY_OF_MONTH)+1;

                calendar.set(Calendar.DAY_OF_MONTH, mDay);




                set.setOnClickListener(new OnClickListener() {



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

                      Calendar cal=Calendar.getInstance();
                      cal.set(datePicker.getYear(), datePicker.getMonth(), datePicker.getDayOfMonth());

                      if(cal.after(calendar)){
                        Toast.makeText(SettingActivity.this, "DOB not more then current date", Toast.LENGTH_SHORT).show();
                          handler.etDOB.setText("");
                      }else{
                             date_selected = String.valueOf(datePicker.getDayOfMonth())+"/"+String.valueOf(datePicker.getMonth()+1)+"/"+String.valueOf(datePicker.getYear());

                          handler.etDOB.setText(datePicker.getDayOfMonth()+"-"+AccessRecordForPDF.MONTHS[datePicker.getMonth()+1]+"-"+String.valueOf(datePicker.getYear()));
                          dialog.dismiss();
                      }






                    }
                });
                cancel.setOnClickListener(new OnClickListener() {

                    public void onClick(View arg0) {
                        // TODO Auto-generated method stub
                        dialog.dismiss();
                    }
                });

                dialog.show();


            }
        });


And create dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="270dp"
    android:layout_height="190dp"
    android:background="@android:color/black"
    android:orientation="vertical" >


    <DatePicker
        android:id="@+id/datePicker1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />



    <!--
         <com.amvrin.PillsScheduler.DrumPicker.DateDrumPicker
        android:id="@+id/datepicker"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    -->

    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/black"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/button_time_set"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/button_green"
            android:text="Set"
            android:textColor="@android:color/white" />

        <Button
            android:id="@+id/button_time_cancel"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/button_green"
            android:text="Cancel"
            android:textColor="@android:color/white" />
    </LinearLayout>

</LinearLayout>