java日期选择器不可见按钮

Question

正如你所知，我使用的是日期选择器（不同的语言，顶部写的是2015年11月）

我使用的是OnClickListener，当单击a1EditText时，会弹出DatePicker对话框，您可以选择日期，完成后会收到EditText中的日期

但是我在对话框的构象按钮和年份选择上遇到了问题，它们是看不见的，我只能点击它们，尽管看不到它们

如何启用/显示确认和年份日期选择按钮

活动。xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
    xmlns:tools="http://schemas.安卓.com/tools"
    安卓:id="@+id/activity_first_entry"
    安卓:layout_width="match_parent"
    安卓:layout_height="match_parent"
    安卓:paddingBottom="@dimen/activity_vertical_margin"
    安卓:paddingLeft="@dimen/activity_horizontal_margin"
    安卓:paddingRight="@dimen/activity_horizontal_margin"
    安卓:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.none.myapplication.firstEntry">
<EditText
        安卓:id="@+id/a1"
        安卓:layout_below="@+id/btn"
        安卓:layout_width="wrap_content"
        安卓:layout_height="wrap_content" />
</RelativeLayout>

活动。爪哇

private EditText a1;
private DatePickerDialog fromDatePickerDialog;
private SimpleDateFormat dateFormatter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_first_entry);


    dateFormatter = new SimpleDateFormat("dd-MM-yyyy");

    findViewsById();

    setDateTimeField();

}
private void findViewsById() {
    a1 = (EditText) findViewById(R.id.a1);
    a1.setInputType(InputType.TYPE_NULL);
    a1.requestFocus();
}

private void setDateTimeField() {
    a1.setOnClickListener(this);

    Calendar newCalendar = Calendar.getInstance();
    fromDatePickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {

        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            Calendar newDate = Calendar.getInstance();
            newDate.set(year, monthOfYear, dayOfMonth);
            a1.setText(dateFormatter.format(newDate.getTime()));
        }

    },newCalendar.get(Calendar.YEAR), newCalendar.get(Calendar.MONTH), newCalendar.get(Calendar.DAY_OF_MONTH));
}


@Override
public void onClick(View view) {
    if(view == a1) {
        fromDatePickerDialog.show();
    }
}

Answer 1

fromDatePickerDialog = new DatePickerDialog(this, R.style.DialogTheme, new DatePickerDialog.OnDateSetListener() {
    //rest of the code
}

还有你的风格。xml

<style name="DialogTheme" parent="Theme.AppCompat.Light.Dialog">
<item name="colorAccent">@color/blue_500</item>
</style>

original answer

Answer 2

检查此代码段-

public void showDatePickerDialog(){

        DatePickerDialog datePickerDialog = new DatePickerDialog(getActivity(), date, myCalendar.get(Calendar.YEAR), myCalendar.get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH));
        datePickerDialog.getDatePicker().setMinDate(System.currentTimeMillis() - 1000);
        datePickerDialog.show();
       //clientDate.setText(""+myCalendar.get(Calendar.DAY_OF_MONTH)+"/"+(myCalendar.get(Calendar.MONTH)+1)+"/"+myCalendar.get(Calendar.YEAR));
    }


    DatePickerDialog.OnDateSetListener date = new DatePickerDialog.OnDateSetListener() {

        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

            myCalendar.set(Calendar.YEAR, year);
            myCalendar.set(Calendar.MONTH, monthOfYear);
            myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            //updateYourLabel(); // or whatever you want
            //Toast.makeText(context, ""+dayOfMonth+"/"+(monthOfYear+1)+"/"+year, Toast.LENGTH_SHORT).show();
            clientDate.setText(""+dayOfMonth+"/"+(monthOfYear+1)+"/"+year);
        }

    };

Answer 3

对于那些没有得到上述解决方案的人，请尝试以下解决方案-

风格。xml:

<!   Date Picker Styles    >
<style name="DialogTheme" parent="Theme.AppCompat.Light.Dialog">
    <item name="colorAccent">@color/titletext_blue</item>           <!  Header Background  >
    <item name="android:colorAccent">@color/titletext_blue</item>
    <item name="android:textColor">@color/titletext_blue</item>
    <item name="android:buttonBarPositiveButtonStyle">@style/DialogButtonStyled</item>
    <item name="android:buttonBarNegativeButtonStyle">@style/DialogButtonStyled</item>
    <item name="android:buttonBarNeutralButtonStyle">@style/DialogButtonStyled</item>
    <item name="android:colorControlActivated">#4971AC</item>        <! selected day >
    <!         <item name="android:textColorPrimary">#89B5F6</item> &lt;!&ndash;days of the month&ndash;&gt; >
    <!         <item name="android:textColorSecondary">#0E3E85</item>    &lt;!&ndash;days of the week&ndash;&gt; >
</style>

<!  Date picker ok/cancel button styles     >
<style name="DialogButtonStyled" parent="Theme.MaterialComponents.Light">
    <item name="android:textColor">@color/titletext_blue</item>
    <item name="android:background">@color/transparent</item>
    <item name="android:textSize">15dp</item>
</style>

和调用日期选择器，如下所示：

new DatePickerDialog(getActivity(), R.style.DialogTheme,(DatePickerDialog.OnDateSetListener) getActivity(), year, month, day);

这应该对您有所帮助：） 干杯