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我有2類片段的活動，我有一個按鈕在這一個，我想，當我點擊這個按鈕的viewpager換到另一個類（選項卡/頁）。如何重定向到一個viewpager片段的另一頁？
我該怎麼做？
謝謝。
這是其中一個類代碼：
package com.victor.martin.agenda.app.fragments;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import com.victor.martin.agenda.app.DB.DBManager;
import com.victor.martin.agenda.app.DB.Event;
import com.victor.martin.agenda.app.DatePickerFragment;
import com.victor.martin.agenda.app.R;
import com.victor.martin.agenda.app.TimePickerFragment;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* Created by McFly on 11/05/2014.
*/
public class NewEventFragment extends Fragment implements TimePickerFragment.TimePickerFragmentListener,DatePickerFragment.DatePickerFragmentListener {
int tmp_year, tmp_month, tmp_day, tmp_hour, tmp_minute;
String tmp_description, tmp_location;
Button bt_date, bt_time, bt_clear, bt_save;
EditText et_description, et_location;
Context _c;
// Database Helper
DBManager db;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_new_event, container, false);
_c = getActivity();
db = new DBManager(_c);
bt_date = (Button)v.findViewById(R.id.bt_date);
bt_time = (Button)v.findViewById(R.id.bt_time);
bt_clear = (Button)v.findViewById(R.id.bt_clear);
bt_save = (Button)v.findViewById(R.id.bt_save);
et_description = (EditText)v.findViewById(R.id.et_description);
et_location = (EditText)v.findViewById(R.id.et_location);
bt_date.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDatePickerDialog();
}
});
bt_time.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showTimePickerDialog();
}
});
bt_clear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
bt_date.setText(getResources().getString(R.string.str_date));
bt_time.setText(getResources().getString(R.string.str_time));
et_description.setText(getResources().getString(R.string.str_empty));
et_location.setText(getResources().getString(R.string.str_empty));
}
});
bt_save.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
tmp_description = et_description.getText().toString();
tmp_location = et_location.getText().toString();
long timestamp = convertStringToTimestamp(tmp_year, tmp_month, tmp_day, tmp_hour, tmp_minute);
Event tmp_event = new Event("HARDCODED_USER", timestamp, tmp_description, tmp_location);
db.insertData(tmp_event);
Log.i("SAVED", tmp_event.toString());
}
});
return v;
}
public static NewEventFragment newInstance(String text) {
NewEventFragment f = new NewEventFragment();
Bundle b = new Bundle();
b.putString("msg", text);
f.setArguments(b);
return f;
}
// Methods
//Llamado cuando el usuario pulsa el botón de TimePicker
public void showTimePickerDialog() {
TimePickerFragment newFragment = new TimePickerFragment();
newFragment.setTargetFragment(this, 0);
newFragment.show(this.getFragmentManager(), "timePicker");
}
//Llamado cuando el usuario pulsa el botón de DatePicker
public void showDatePickerDialog() {
DatePickerFragment newFragment = new DatePickerFragment();
newFragment.setTargetFragment(this, 0);
newFragment.show(this.getFragmentManager(), "datePicker");
}
//Llamado cuando el usuario acaba la selección y los datos son enviados a la actividad
@Override
public void onFinishTimePickerDialog(int hourOfDay, int minute) {
// TODO Auto-generated method stub
//Toast.makeText(this, "Hora: " + hourOfDay + minute, Toast.LENGTH_SHORT).show();
tmp_hour = hourOfDay;
tmp_minute = minute;
bt_time.setText(hourOfDay + ":" + minute);
}
//Llamado cuando el usuario acaba la selección y los datos son enviados a la actividad
@Override
public void onFinishDatePickerDialog(int year, int month, int day) {
// TODO Auto-generated method stub
//Toast.makeText(this, "Fecha: " + year + month + day, Toast.LENGTH_SHORT).show();
tmp_year = year;
tmp_month = month;
tmp_day = day;
bt_date.setText(day + "/" + month + "/" + year);
}
public long convertStringToTimestamp(int year, int month, int day, int hour, int minute){
String converted_day = String.format("%02d", day);
String converted_month = String.format("%02d", month);
String converted_year = String.format("%02d", year);
String converted_hour = String.format("%02d", hour);
String converted_minute = String.format("%02d", minute);
String converted_seconds = String.format("%02d", 0);
String str_date= converted_day + "-" + converted_month + "-" + converted_year + " " + converted_hour + ":" + converted_minute + ":" + converted_seconds;
DateFormat formatter = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
Date date = null;
try {
date = (Date)formatter.parse(str_date);
} catch (ParseException e) {
e.printStackTrace();
}
return date.getTime();
}
}