Android开发实现日期时间控件选择
本文实例为大家分享了Android开发实现日期时间控件选择的具体代码，供大家参考，具体内容如下
前言整合Android原生控件（日期控件DatePicker、时间控件TimePicker）实现选择日期、时间绑定。
本文仅仅是一种参考，不光是时间控件，自定义的Layout一样可以采用这种方式。
涉及技术要点：
1.控件事件绑定
2.弹出框AlertDialog
3.日期格式化SimpleDateFormat
1.1 新建Layout，修改样式为LinearLayout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
1.2 Layout中添加日期和时间控件
注意需要将控件的calendarViewShown指定为false及datePickerMode属性指定为spinner
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<DatePicker
android:id="@+id/dialog_datetime_date_picker"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:calendarViewShown="false"
android:datePickerMode="spinner"/>
<TimePicker
android:id="@+id/dialog_datetime_time_picker"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:calendarViewShown="false"
android:datePickerMode="spinner" />
</LinearLayout>
二、新建DateTimeDialog
创建DateTimeDialog类是为了将方法封装，以便我项目多次调用
public class DateTimeDialog {
}
2.1 创建静态方法
2.1.1 创建SetDateDialog，用于选择日期
public static void SetDateDialog(Context context, Activity activity, TextView textView, String... title) {
}
这里我们将引用控件的context、activity作为参数传入方法中，方便我们动态加载Layout和指定AlertDialog弹出所在的Activity，避免弹出框无法显示。
textView参数为需要绑定选择的控件，并且在选择之后，会将选择的日期返回给textView
titile是可选参数，指定弹出框的标题，不指定的话，会默认为“选择日期”
2.1.2 SetDateDialog中绑定textView的click事件
给textView绑定事件后，在用户点击控件时即可执行相应的事件内容，在此我们需要的是用户点击控件时，弹出日期选择框。
textView.setOnClickListener(view -> {
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setView(view1);
builder.create().show();
});
由于我们的控件中含有时间控件，需要隐藏
View view1 = LayoutInflater.from(context).inflate(R.layout.dialog_datetime, null);
final TimePicker timePicker = view1.findViewById(R.id.dialog_datetime_time_picker);
timePicker.setVisibility(View.GONE);
如果textView有默认值，则在弹出的时候需要将textView的日期带入弹出框中
final DatePicker datePicker = view1.findViewById(R.id.dialog_datetime_date_picker);
Calendar calendar;
String strDate = textView.getText().toString();
calendar = convertDateToCalendar(strDate);
datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DATE), null);
设置弹出框的标题
if (title != null && title.length > 0) {
builder.setTitle(title[0]);
} else
builder.setTitle("选择日期");
实现弹出框的按钮事件：
点击确定时，绑定值给textView，并关闭弹窗；点击取消时，直接关闭天窗；点击现在时，将当前时间传给textView，并关闭弹窗。
builder.setPositiveButton("确 定", (dialog, i) -> {
//日期格式
int year = datePicker.getYear();
int month = datePicker.getMonth() + 1;
int dayOfMonth = datePicker.getDayOfMonth();
textView.setText(String.format(Locale.getDefault(), "%d年%d月%d日 ", year, month, dayOfMonth));
dialog.cancel();
});
builder.setNegativeButton("取 消", (dialog, which) -> dialog.cancel());
builder.setNeutralButton("现 在", (dialog, i) -> {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年M月d日",Locale.getDefault());// HH:mm:ss
//获取当前时间
Date date = new Date(System.currentTimeMillis());
textView.setText(simpleDateFormat.format(date));
dialog.cancel();
});
以下是完整代码：
public static void SetDateDialog(Context context, Activity activity, TextView textView, String... title) {
textView.setOnClickListener(view -> {
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
View view1 = LayoutInflater.from(context).inflate(R.layout.dialog_datetime, null);
final DatePicker datePicker = view1.findViewById(R.id.dialog_datetime_date_picker);
final TimePicker timePicker = view1.findViewById(R.id.dialog_datetime_time_picker);
timePicker.setIs24HourView(true);
Calendar calendar;
String strDate = textView.getText().toString();
calendar = convertDateToCalendar(strDate);
datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DATE), null);
timePicker.setHour(calendar.get(Calendar.HOUR_OF_DAY));
timePicker.setMinute(calendar.get(Calendar.MINUTE));
timePicker.setVisibility(View.GONE);
// datePicker.setCalendarViewShown(false);
//设置Date布局
builder.setView(view1);
if (title != null && title.length > 0) {
builder.setTitle(title[0]);
} else
builder.setTitle("选择日期");
builder.setPositiveButton("确 定", (dialog, i) -> {
//日期格式
int year = datePicker.getYear();
int month = datePicker.getMonth() + 1;
int dayOfMonth = datePicker.getDayOfMonth();
textView.setText(String.format(Locale.getDefault(), "%d年%d月%d日 ", year, month, dayOfMonth));
dialog.cancel();
});
builder.setNegativeButton("取 消", (dialog, which) -> dialog.cancel());
builder.setNeutralButton("现 在", (dialog, i) -> {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年M月d日",Locale.getDefault());// HH:mm:ss
//获取当前时间
Date date = new Date(System.currentTimeMillis());
textView.setText(simpleDateFormat.format(date));
dialog.cancel();
});
builder.create().show();
});
}
同样的方式我们再实现选择日期时间的方法，具体不再赘述，上代码：
public static void SetDateTimeDialog(Context context, Activity activity, TextView textView, String... title) {
textView.setOnClickListener(view -> {
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
View view1 = LayoutInflater.from(context).inflate(R.layout.dialog_datetime, null);
final DatePicker datePicker = view1.findViewById(R.id.dialog_datetime_date_picker);
final TimePicker timePicker = view1.findViewById(R.id.dialog_datetime_time_picker);
timePicker.setIs24HourView(true);
// datePicker.setCalendarViewShown(false);
Calendar calendar;
String strDate = textView.getText().toString();
calendar = convertDateToCalendar(strDate);
datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DATE), null);
timePicker.setHour(calendar.get(Calendar.HOUR_OF_DAY));
timePicker.setMinute(calendar.get(Calendar.MINUTE));
//设置Date布局
builder.setView(view1);
if (title != null && title.length > 0) {
builder.setTitle(title[0]);
} else
builder.setTitle("选择时间");
builder.setPositiveButton("确 定", (dialog, i) -> {
//日期格式
int year = datePicker.getYear();
int month = datePicker.getMonth() + 1;
int dayOfMonth = datePicker.getDayOfMonth();
int hour = timePicker.getHour();
int min = timePicker.getMinute();
// timePicker.getSecond();
textView.setText(String.format(Locale.getDefault(), "%d年%d月%d日 %d:%d", year, month, dayOfMonth, hour, min));
dialog.cancel();
});
builder.setNegativeButton("取 消", (dialog, which) -> dialog.cancel());
builder.setNeutralButton("现 在", (dialog, i) -> {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年M月d日 HH:mm", Locale.getDefault());// HH:mm:ss
//获取当前时间
Date date = new Date(System.currentTimeMillis());
textView.setText(simpleDateFormat.format(date));
dialog.cancel();
});
builder.create().show();
});
}
文中提到的convertDateToCalendar是笔者用于日期转换的，您可以根据自己的需要去灵活实现
private static Calendar convertDateToCalendar(String strDate) {
int year;
int month;
int day;
int hour;
int minute;
Calendar calendar = Calendar.getInstance();
//获取当前时间
Date date = new Date(System.currentTimeMillis());
calendar.setTime(date);
// calendar.add(Calendar.MONTH,1);
year = calendar.get(Calendar.YEAR);
month = calendar.get(Calendar.MONTH);
day = calendar.get(Calendar.DATE);
hour = calendar.get(Calendar.HOUR_OF_DAY);
minute = calendar.get(Calendar.MINUTE);
if (strDate != null && !strDate.equals("")) {
if (strDate.contains("：")) {
strDate = strDate.split("：")[1];
}
strDate = strDate.replace("年", "-").replace("月", "-").replace("日", "").replace(".", "").replace(" ", "-").replace(":", "-");
Log.d("liuwz", "convertDateToCalendar: "+strDate);
if (strDate.split("-").length >= 3) {
year = Integer.parseInt(strDate.split("-")[0]);
month = Integer.parseInt(strDate.split("-")[1]);
day = Integer.parseInt(strDate.split("-")[2]);
if (strDate.split("-").length >= 5) {
hour = Integer.parseInt(strDate.split("-")[3]);
minute = Integer.parseInt(strDate.split("-")[4]);
}
calendar.set(year, month, day, hour, minute);
calendar.add(Calendar.MONTH, -1);
} else if (strDate.split("-").length >= 2) {
hour = Integer.parseInt(strDate.split("-")[0]);
minute = Integer.parseInt(strDate.split("-")[1]);
calendar.set(year, month, day, hour, minute);
}
}
return calendar;
}
至此已经大功告成，下面看下如何引用
2.2 引用
在任意需要用到选择时间的Activity的onCreate方法中添加下面一句代码即可：
DateTimeDialog.SetDateDialog(getApplicationContext(), MainActivity.this, timeSelectView, "请选择日期");
将其中的MainActivity修改为您当前的Activity；将timeSelectView 修改为您页面中的时间TextView或者EditView，“请选择日期”为可选参数，可忽略。
三. 总结本文仅仅为了使用方便而对AlertDialog进行了封装，用的是Android的原生控件，写在此处仅仅给新入门的朋友们以参考。
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