android - 在 api 11 之前在 android 中将日期设置为最小值和最大值

Question

我无法将日期纠察对话框设置为最小和最大日期。用户可以无限向上和向后滚动以选择任何年份或日期。但我想使用受限的日期选择器对话框。谁能帮帮我。

提前谢谢你。

Answer 1

久经考验!

DatePickerDialogWithMaxMinRange.java

public class DatePickerDialogWithMaxMinRange extends DatePickerDialog {

static int maxYear = 2005;
static int maxMonth = 11;
static int maxDay = 31;

int minYear = 1955;
int minMonth = 0;
int minDay = 1;

public DatePickerDialogWithMaxMinRange(Context context,
        OnDateSetListener callBack, int minYear, int minMonth, int minDay,
        int maxYear, int maxMonth, int maxDay) {
    super(context, callBack, maxYear, maxMonth, maxDay);
    this.minDay = minDay;
    this.minMonth = minMonth;
    this.minYear = minYear;
    DatePickerDialogWithMaxMinRange.maxDay = maxDay;
    DatePickerDialogWithMaxMinRange.maxMonth = maxMonth;
    DatePickerDialogWithMaxMinRange.maxYear = maxYear;
}

@Override
public void onDateChanged(DatePicker view, int year, int monthOfYear,
        int dayOfMonth) {
    super.onDateChanged(view, year, monthOfYear, dayOfMonth);

    if (year > maxYear || monthOfYear > maxMonth && year == maxYear
            || dayOfMonth > maxDay && year == maxYear
            && monthOfYear == maxMonth) {
        view.updateDate(maxYear, maxMonth, maxDay);
    } else if (year < minYear || monthOfYear < minMonth && year == minYear
            || dayOfMonth < minDay && year == minYear
            && monthOfYear == minMonth) {
        view.updateDate(minYear, minMonth, minDay);
    }
}
}

MyAndroidAppActivity.java

public class MyAndroidAppActivity extends Activity {


DatePickerDialogWithMaxMinRange datePickerDialog= null;
DatePickerDialog.OnDateSetListener datePickerOnDateSetListener;
Calendar myCalendar;

private TextView tvDisplayDate;
private Button btnChangeDate;

static final int DATE_DIALOG_ID = 999;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    tvDisplayDate = (TextView)findViewById(R.id.lblDate);
    setDate();
    addListenerOnButton();

}

public void addListenerOnButton() {

    btnChangeDate = (Button) findViewById(R.id.btnChangeDate);

    btnChangeDate.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            datePickerDialog.show();

        }

    });

}

@Override
protected Dialog onCreateDialog(int id) {
    switch (id) {
    case DATE_DIALOG_ID:
        // set date picker as current date

        return new DatePickerDialog(this, datePickerOnDateSetListener, intCurrentYear, intCurrentMonth,intCurrentDay);
    }
    return null;
}

private int intCurrentYear;
private int intCurrentMonth;
private int intCurrentDay;
private int intMaxYear;
private int intMaxMonth;
private int intMaxDay;
private int intMinYear;
private int intMinMonth;
private int intMinDay;


public void setDate() {
    /*
     * Initialise Listener for date set
     */

    datePickerOnDateSetListener = new DatePickerDialog.OnDateSetListener() {
        public void onDateSet(DatePicker view, int year, int monthOfYear,
                int dayOfMonth) {
            tvDisplayDate.setText(new StringBuilder().append(year)
                    .append("-").append(monthOfYear + 1).append("-")
                    .append(dayOfMonth));
        }
    };

    // initialise DatePicker 

    myCalendar = Calendar.getInstance();

    intCurrentYear = myCalendar.get(Calendar.YEAR);
    intCurrentMonth = myCalendar.get(Calendar.MONTH);
    intCurrentDay = myCalendar.get(Calendar.DAY_OF_MONTH);


    intMaxYear =  intCurrentYear;
    intMaxMonth = intCurrentMonth;
    intMaxDay =  intCurrentDay;

    intMinYear =   2011;
    intMinMonth = intCurrentMonth;
    intMinDay =  intCurrentDay; 

    datePickerDialog = new DatePickerDialogWithMaxMinRange(MyAndroidAppActivity.this, datePickerOnDateSetListener,intMinYear,intMinMonth,intMinDay,intMaxYear,intMaxMonth,intMaxDay);
}

ma​​in.xml

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/btnChangeDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Change Date" />

    <TextView
        android:id="@+id/lblDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Current Date (M-D-YYYY): "
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/tvDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textAppearance="?android:attr/textAppearanceLarge" />


</LinearLayout>