DatePicker、DatePickerDialog的使用

佈局文件 ：

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"        tools:context="com.example.administrator.calendardialog.MainActivity">

    <TextView
        android:id="@+id/text"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:gravity="center"
        android:text=" "/>


    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/text"
        android:layout_centerHorizontal="true"
        android:text="彈出Google自帶的日曆"
        android:textAllCaps="false"/>

    <DatePicker
        android:id="@+id/datePicker"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/button"
        android:layout_centerHorizontal="true"/>

</RelativeLayout>

上代碼：

/**
 * 一個Google自帶的日曆(高版本、低版本顯示效果不一致)
 */
public class MainActivity extends Activity {
    //使用註解
    @InjectView(R.id.button)
    Button mButton;
    @InjectView(R.id.datePicker)
    DatePicker mDatePicker;
    @InjectView(R.id.text)
    TextView mText;
    private DatePickerDialog pickerDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.inject(this);
        /**
         * 初始化年月日
         */
        mDatePicker.updateDate(2015, 3, 10);// 參數1.年 2.月 3.日
        mDatePicker.setEnabled(true); // 設置組件是否可用
        chooseData();
    }

    @OnClick(R.id.button)
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.button://彈出對話框選擇日期
                dialogCalend();
                break;
        }
    }

    //選擇日期
    private void chooseData() {
        // 給DatePicker加監聽
        mDatePicker.init(mDatePicker.getYear(), mDatePicker.getMonth(), mDatePicker.getDayOfMonth(),
                new DatePicker.OnDateChangedListener() {
                    public void onDateChanged(DatePicker view, int year,
                                              int monthOfYear, int dayOfMonth) {
                        String datat = mDatePicker.getYear() + "年" + (mDatePicker.getMonth() + 1) + "月" + mDatePicker.getDayOfMonth() + "日";
                        Toast.makeText(MainActivity.this, "日期是" + datat, Toast.LENGTH_SHORT).show();
                        mText.setText(datat);
                    }
                });
    }

    //彈出對話框選擇日期
    private void dialogCalend() {
        Calendar calendar = Calendar.getInstance();
        pickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
                String dates = i + "年" + (i1 + 1) + "月" + i2 + "日";
                Toast.makeText(MainActivity.this, "選擇的日期是" + dates, Toast.LENGTH_SHORT).show();
                mText.setText(dates);
            }

        }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
        pickerDialog.show();//顯示
    }
}