Android Studio时间选择器的创建方法

<TextView
  android:id="@+id/consultation_tv_birthdate"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignLeft="@+id/consultation_tv_sex"
  android:layout_alignStart="@+id/consultation_tv_sex"
  android:layout_alignTop="@+id/consultation_et_birthdate"
  android:layout_marginTop="9dp"
  android:text="出生日期："
  android:textColor="@color/black"
  android:textSize="18sp"
  android:textStyle="bold" />

<EditText
  android:id="@+id/consultation_et_birthdate"
  android:layout_width="260dp"
  android:layout_height="40dp"
  android:layout_alignLeft="@+id/consultation_et_sex"
  android:layout_alignStart="@+id/consultation_et_sex"
  android:layout_below="@+id/consultation_et_sex"
  android:layout_marginTop="22dp"
  android:background="@drawable/input_bg"
  android:focusable="false"
  android:ems="10"
  android:inputType="textPersonName"
  android:paddingLeft="15dp"
  android:paddingRight="15dp" />

<ImageView
  android:id="@+id/consultation_iv_birthdate"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_above="@+id/consultation_et_id_card"
  android:layout_alignEnd="@+id/consultation_et_birthdate"
  android:layout_alignRight="@+id/consultation_et_birthdate"
  android:layout_marginBottom="5dp"
  android:layout_marginRight="10dp"
  app:srcCompat="@android:drawable/ic_menu_today" />

EditText consultation_et_birthdate;//出生日期：
ImageView consultation_iv_birthdate;//出生日期点击

consultation_et_birthdate = (EditText) findViewById(R.id.consultation_et_birthdate);
consultation_iv_birthdate = (ImageView) findViewById(R.id.consultation_iv_birthdate);

consultation_iv_birthdate.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
    showDialog(DATE_DIALOG);
  }
});

final Calendar ca = Calendar.getInstance();
mYear = ca.get(Calendar.YEAR);//年
mMonth = ca.get(Calendar.MONTH);//月
mDay = ca.get(Calendar.DAY_OF_MONTH);//日

@Override
protected Dialog onCreateDialog(int id) {
  switch (id) {
    case DATE_DIALOG:
      return new DatePickerDialog(this, mdateListener, mYear, mMonth, mDay);
  }
  return null;
}

/**
 * 设置日期 绑定时间
 */
private DatePickerDialog.OnDateSetListener mdateListener = new DatePickerDialog.OnDateSetListener() {
  @Override
  public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
    mYear = year;
    mMonth = monthOfYear;
    mDay = dayOfMonth;
    consultation_et_birthdate.setText(new StringBuffer().append(mYear).append("-").append(mMonth + 1).append("-").append(mDay).append(" "));
  }
};