首先，这是我的第一个问题，谢谢你的回复:) 我有一个片段扩展SherlockListFragment，它有一个（事件）列表保存在数据库中，我希望当我点击列表中的任何项目，获取所有事件数据并填写另一个具有editText（s）的活动.... 这是frgment.java代码
public class EventsFragment extends SherlockListFragment {
EditText _eventName_;
EditText next_activty_text;
List<String> presidents = new ArrayList<String>();
public DBAdapter db;
String buf = "";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_events, container, false);
_eventName_ = (EditText) v.findViewById(R.id.editText11);
next_activty_text = (EditText) v.findViewById(R.id.editText12);
// The most Important part in action bar menus :)
setHasOptionsMenu(true);
/*
//This is how to link a button in fragment by its .xml file :Ds
Button create_btn = (Button) v.findViewById(R.id.button1);
create_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//startActivity(new Intent("com.nazmy.CreateEventActivity"));
}
});*/
return v;
}
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
db = new DBAdapter(getActivity());
db.open();
int i = 1;
while(db.getEvent(i).isLast()){
Cursor c = db.getEvent(i);
presidents.add(c.getString(1));
i++;
}
db.close();
setListAdapter(new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, presidents));
setListAdapter(new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, presidents));
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.fragment_events_menu, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.add:
startActivity(new Intent("com.nazmy.CreateEventActivity"));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
//startActivity(new Intent("com.nazmy.CreateEventActivity"));
db = new DBAdapter(getActivity());
db.open();
Cursor c = db.getEvent(id+1);
//populate(c.getString(1));
_eventName_.setText(c.getString(1));
db.close();
}
}
` 这是活动代码
public class CreateEventActivity extends FragmentActivity {
EditText mEdit;
EditText mEdit2;
EditText mEditFromTime;
EditText mEditToTime;
int whichDateBtn;
int whichTimeBtn;
DBAdapter db = new DBAdapter(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_event);
db.open();
Cursor c = db.getAllEvents();
if (c.moveToFirst())
{
do {
DisplayEvent(c);
} while (c.moveToNext());
}
db.close();
Button cancel_btn = (Button) findViewById(R.id.button4);
Button save_btn = (Button) findViewById(R.id.button1); //if clicked -> save in data-base
save_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
db.open();
EditText event_name = (EditText)findViewById(R.id.editText12);
EditText event_place = (EditText)findViewById(R.id.editText13);
EditText from_date = (EditText)findViewById(R.id.editText14);
EditText from_time = (EditText)findViewById(R.id.editText15);
EditText to_date = (EditText)findViewById(R.id.EditText16);
EditText to_time = (EditText)findViewById(R.id.EditText17);
CheckBox share = (CheckBox)findViewById(R.id.checkBox1);
CheckBox alarm = (CheckBox)findViewById(R.id.checkBox2);
long id2 = db.insertEvent(event_name.getText().toString(), event_place.getText().toString(),
from_date.getText().toString(), to_date.getText().toString(),
from_time.getText().toString(),
to_time.getText().toString(),
share.isChecked(),alarm.isChecked());
db.close();
event_name.setText("");
event_place.setText("");
from_date.setText("");
to_date.setText("");
from_time.setText("");
to_time.setText("");
if (share.isChecked()) {
share.setChecked(false);
}
if (alarm.isChecked()) {
alarm.setChecked(false);
}
startActivity(new Intent("com.nazmy.HomeActivity"));
}
});
cancel_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent("com.nazmy.HomeActivity"));
}
});
}
//This method shows the dialog when Button is clicked
public void selectFromtDate(View view) {
DialogFragment mDialog = new SelectDateFragment();
mDialog.show(getFragmentManager(), "DatePicker");
whichDateBtn = 0;
}
public void selectToDate(View view) {
DialogFragment mDialog2 = new SelectDateFragment();
mDialog2.show(getFragmentManager(), "DatePicker");
whichDateBtn = 1;
}
//This method will update the EditText field with the following code.
public void populateSetDate(int year, int month, int day) {
mEdit = (EditText)findViewById(R.id.editText14); //brbt el editText (mEdit) be el text ely hayzhar fel text Field
mEdit2 = (EditText)findViewById(R.id.EditText16);
if(whichDateBtn==0) {
mEdit.setText(month+"/"+day+"/"+year);
}
else if (whichDateBtn == 1) {
mEdit2.setText(month+"/"+day+"/"+year);
}
}
//This subclass includes method to display the datepicker fragment to the user.
//It also has the method to handle the event on setting the date.
public class SelectDateFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
//The onCreateDialog() method creates a calendar object.
//Using this object the current day, month and year that will be retrieved.
//This current instance will return to the activity to display the date picker with the current date by default.
//onDateSet() method calls the populateSetDate() with the selected date parameters.
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Calendar calendar = Calendar.getInstance();
int yy = calendar.get(Calendar.YEAR);
int mm = calendar.get(Calendar.MONTH);
int dd = calendar.get(Calendar.DAY_OF_MONTH);
return new DatePickerDialog(getActivity(), this, yy, mm, dd);
}
public void onDateSet(DatePicker view, int yy, int mm, int dd) {
populateSetDate(yy, mm+1, dd);
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
// Time Pickers
////////////////////////////////////////////////////////////////////////////////////////////////////////
public void selectFromTime(View v) {
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getFragmentManager(), "TimePicker");
whichTimeBtn = 0;
}
public void selectToTime(View v) {
DialogFragment newFragment = new TimePickerFragment();
newFragment.show(getFragmentManager(), "TimePicker");
whichTimeBtn = 1;
}
public void populateSetTime(int hour, int min) {
mEditFromTime = (EditText)findViewById(R.id.editText15); //brbt el editText (mEdit) be el text ely hayzhar fel text Field
mEditToTime = (EditText)findViewById(R.id.EditText17);
if(whichTimeBtn==0) {
mEditFromTime.setText(hour+":"+min);
}
else if (whichTimeBtn == 1) {
mEditToTime.setText(hour+":"+min);
}
}
public class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
// Create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,DateFormat.is24HourFormat(getActivity()));
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// Do something with the time chosen by the user
populateSetTime(hourOfDay, minute);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_create_event, menu);
return true;
}
public void DisplayEvent(Cursor c)
{
Toast.makeText(this,
"id : " + c.getString(0) + "\n" +
"Event Name: " + c.getString(1) + "\n" +
"Place : " + c.getString(2) + "\n" +
"From Date : " + c.getString(3)+ "\n" +
"From Time : " + c.getString(5)+ "\n" +
"To Date : " + c.getString(4)+ "\n" +
"To Time : " + c.getString(6),
Toast.LENGTH_LONG).show();
}
}
` 在此先感谢：）
答案 0 :(得分：1)
你有两个选择。从EventsFragment.onListItemClick()中的数据库中获取数据，并将该数据作为Activity个附加内容传递给第二个Intent。或者，您可以传递所单击项目的ID，并在第二个Activity中执行数据库操作。无论哪种方式，你都必须pass data using Intents
public class EventsFragment extends SherlockListFragment {
.
.
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Intent intent = new Intent(this, CreateEventActivity.class);
// OPTION 1: Fetch data here, and pass it with the intent
db = new DBAdapter(getActivity());
db.open();
Cursor c = db.getEvent(id+1);
intent.putExtra("id", c.getString(1));
intent.putExtra("event_name", c.getString(2));
// Do this for all your values.
db.close();
startActivity(intent);
// OPTION 2: Pass the id of the selected item, and fetch the data in second activity
intent.putExtra("selected_id", id+1);
startActivity(intent);
}
}
在CreateEventActivity中，您必须获得您选择通过Intent传递的额外内容。
@Override
protected void onCreate(Bundle savedInstanceState) {
.
.
Intent intent = getIntent();
// If you chose option 1, you have to get all the extras you attached to the Intent.
long id = intent.getLongExtra("id", -1)
String eventName = intent.getStringExtra("event_name", "defValue");
// Fetch all the values here..
// If you chose option 2, you fetch the id and do the database operations to retrive
// the data
long id = intent.getLongExtra("selected_id", -1);
// DB stuff here..
}