DatePickerActivity.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 |
import java.util.Calendar; import android.app.Activity; import android.app.DatePickerDialog; import android.app.Dialog; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.DatePicker; import android.widget.TextView; public class DatePickerActivity extends Activity { private TextView mDateDisplay; private Button mPickDate; private int mYear; private int mMonth; private int mDay; static final int DATE_DIALOG_ID = 0; // the callback received when the user "sets" the date in the dialog private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() { public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { mYear = year; mMonth = monthOfYear; mDay = dayOfMonth; updateDisplay(); } }; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // capture our View elements mDateDisplay = (TextView) findViewById(R.id.dateDisplay); mPickDate = (Button) findViewById(R.id.pickDate); // add a click listener to the button mPickDate.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { showDialog(DATE_DIALOG_ID); } }); // get the current date final Calendar c = Calendar.getInstance(); mYear = c.get(Calendar.YEAR); mMonth = c.get(Calendar.MONTH); mDay = c.get(Calendar.DAY_OF_MONTH); // display the current date (this method is below) updateDisplay(); } // updates the date in the TextView private void updateDisplay() { mDateDisplay.setText( new StringBuilder() // Month is 0 based so add 1 .append(mMonth + 1).append("-") .append(mDay).append("-") .append(mYear).append(" ")); } @Override protected Dialog onCreateDialog(int id) { switch (id) { case DATE_DIALOG_ID: return new DatePickerDialog(this, mDateSetListener, mYear, mMonth, mDay); } return null; } } |
main.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 |
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <TextView android:id="@+id/dateDisplay" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="" android:textSize="24sp" /> <Button android:id="@+id/pickDate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Change the date" android:textSize="24sp" /> </LinearLayout> |