XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="br.com.android.AppCalendario"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Selecione a data"
/>
<DatePicker
android:id="@+id/data"
android:layout_width="fill_parent"
android:layout_height="365dp"
/>
<Button
android:id="@+id/btdata"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Mostrar
Data" />
</LinearLayout>
JAVA
package br.com.android;
import
android.support.v7.app.ActionBarActivity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
public class AppCalendario extends
ActionBarActivity {
DatePicker dp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_app_calendario);
Button b = (Button)
findViewById(R.id.btdata);
dp = (DatePicker) findViewById(R.id.data);
dp.updateDate(2015, 10, 16);
b.setOnClickListener(new
View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder
dialogo=new
AlertDialog.Builder(AppCalendario.this);
dialogo.setMessage("Data selecionada: " + String.valueOf(dp.getDayOfMonth())+ "/" + String.valueOf(dp.getMonth()+1)+"/"+ String.valueOf(dp.getYear()));
dialogo.setNeutralButton("OK", null);
dialogo.setTitle("Data");
dialogo.show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.app_calendario, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
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