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如何在Android中从日历中提取日期?

android-calendar android-activity android-studio android-fragments android

Karan Saxena · 技术社区 · 8 年前

我正在尝试在 Android 。我已添加日历 widget 现在我想要的是,每当用户单击addevent按钮时,它都会转到一个新的 Activity 屏幕和用户在上一个日历中选择的日期 活动 精确复制到文本字段。有人能帮我写这个代码吗?
附言-我加了两个 Fragments 在主屏幕上,一个用于日历,另一个用于 Buttons .

提前谢谢。

2 回复 | 直到 8 年前

dumb_terminal 8 年前

如果你的意思是 DatePicker 然后,通过注册日期选择侦听器,您就可以获得选定的日期

datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() {

    @Override
    public void onDateChanged(DatePicker datePicker, int year, int month, int dayOfMonth) {
                    Log.d("Date", "Year=" + year + " Month=" + (month + 1) + " day=" + dayOfMonth);

                }
            });

或通过以下方式随时获得所选日期:

 DatePicker datePicker = (DatePicker) findViewById(R.id.datePicker1);
 int day = datePicker.getDayOfMonth();
 int month = datePicker.getMonth() + 1;
 int year = datePicker.getYear();

或者如果您正在使用 CalendarView 然后是一个简单的 getDate() 打电话就行了。现在从中提取日期、月份、年份,并通过将其传递给下一个活动 Intent

如果您正在使用其他东西,请告诉我们。

Ashish Tiwari 8 年前

// Declaration

 private int mDay;
 private int mMonth;
 private int mYear;


// Creating click listener of button

button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

     // Getting values from DatePicker

     DatePicker datePicker = (DatePicker) findViewById(R.id.datePicker1);
     mDay = datePicker.getDayOfMonth();
     mMonth = datePicker.getMonth() + 1;
     mYear = datePicker.getYear();

    // Here you have to write the code to start new Activity
    // If your second activity name is "SecondActivity" then use below code

    Intent intent = new Intent(FirstActivity.this,SecondActivity.class);

    // Put the date values to the intent
    intent.putExtra("Day",mDay);
    intent.putExtra("Month",mMonth);
    intent.putExtra("Year",mYear);

    startActivity(intent);

}
});

以秒为单位 Activity

int day;
int month;
int year;

EditText dateEditText;

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

    dateEditText = (EditText)findViewById(R.id.dateEditText);

    Intent intent = getIntent();

    if(intent != null){
         day = intent.getIntExtra("Day",0);
         month = intent.getIntExtra("Month",0);
         year = intent.getIntExtra("Year",0);

         Calendar calendar = Calendar.getInstance();
         calendar.set(2013,5,23);


         SimpleDateFormat format = new SimpleDateFormat("EEEE, MMMM d, yyyy 'at' h:mm a");
        dateEditText.setText(format.format(calendar.getTime()));

    }

}

编辑

// If you are using Calendar View

calendarView.setOnDateChangeListener(new OnDateChangeListener() {

@Override
public void onSelectedDayChange(CalendarView arg0, int year, int month,
    int date) {

     mDay = date;
     mYear = year;
     mMonth = month;
     // Now you can uses year, month date to sent 
}

});

 // Click Listener of Button in case of CalenderView

button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

    // Here you have to write the code to start new Activity
    // If your second activity name is "SecondActivity" then use below code

    Intent intent = new Intent(FirstActivity.this,SecondActivity.class);

    // Put the date values to the intent
    intent.putExtra("Day",mDay);
    intent.putExtra("Month",mMonth);
    intent.putExtra("Year",mYear);

    startActivity(intent);

}
});