Ok, Just for the practice, I'm implementing something very similar to
the Alarm Clock app included in Android by default. I'm going to put
each file in their own post.
First in this post, Alarmsutta.java which includes the main setup, and
the CursorAdapter:
package net.esalazar.alarmsutta;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.database.Cursor;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CursorAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.CompoundButton.OnCheckedChangeListener;
public class Alarmsutta extends Activity {
private Alarm selectedAlarm;
private AlarmDBAdapter dbAdapter;
// Options menu codes
public final int MENU_NEW = Menu.FIRST;
public final int MENU_EDIT = Menu.FIRST + 1;
public final int MENU_DELETE = Menu.FIRST + 2;
// Intent codes for starting activities
public final int NEW_ALARM = 1;
public final int EDIT_ALARM = 2;
ListView alarmsListView;
AlarmCursorAdapter cursorAdapter;
Cursor allAlarmsCursor;
private LayoutInflater layoutFactory;
private class AlarmCursorAdapter extends CursorAdapter {
public AlarmCursorAdapter(Context context, Cursor c) {
super(context, c, true);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup
parent) {
return layoutFactory.inflate(R.layout.alarmlist_item,
parent,
false);
}
@Override
public void bindView(View view, Context context, Cursor cursor)
{
final Alarm item = dbAdapter.getAlarmFromCursor(cursor);
LinearLayout alarmView = (LinearLayout)view;
Date expiry = item.getExpiry();
String title = item.getTitle();
SimpleDateFormat sdf;
sdf = new SimpleDateFormat("MM/dd/yyyy");
String expiryDateString = sdf.format(expiry);
sdf = new SimpleDateFormat("hh:mm");
String expiryTimeString = sdf.format(expiry);
String message = item.getMessage();
final boolean enabled = item.isEnabled();
Calendar calendar = Calendar.getInstance();
calendar.setTime(expiry);
// Get references to all the elements we wish to muck
with
TextView titleTextView =
(TextView)alarmView.findViewById
(R.id.itemTitleTextView);
TextView messageTextView =
(TextView)alarmView.findViewById
(R.id.itemMessageTextView);
TextView timeTextView = (TextView)alarmView.findViewById
(R.id.itemTimeTextView);
// Dim the AM/PM label accordingly leaving the correct
one bright
TextView amTextView = (TextView)alarmView.findViewById
(R.id.itemAMTextView);
TextView pmTextView = (TextView)alarmView.findViewById
(R.id.itemPMTextView);
Resources r = getResources();
int amPmColorOn = r.getColor(R.color.ampm_on);
int amPmColorOff = r.getColor(R.color.ampm_off);
if( calendar.get(Calendar.HOUR_OF_DAY) >= 12 ) {
amTextView.setTextColor(amPmColorOff);
pmTextView.setTextColor(amPmColorOn);
} else {
amTextView.setTextColor(amPmColorOn);
pmTextView.setTextColor(amPmColorOff);
}
CheckBox enabledCheckBox =
(CheckBox)alarmView.findViewById
(R.id.itemEnabledCheckBox);
// Set the title and message accordingly. We prefix
the message
with
// the date just to be coy.
titleTextView.setText(title);
messageTextView.setText( expiryDateString + " " +
message );
timeTextView.setText(expiryTimeString);
enabledCheckBox.setChecked(enabled);
enabledCheckBox.setOnCheckedChangeListener(new
OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton
buttonView, boolean
isChecked) {
item.setEnabled(isChecked);
dbAdapter.updateAlarm(item.getId(),
item);
notifyDataSetChanged();
}
});
LinearLayout alarmSelectionBox = (LinearLayout)
alarmView.findViewById(R.id.alarmSelectionBox);
alarmSelectionBox.setOnClickListener(new
OnClickListener() {
public void onClick(View v) {
startEditAlarm(dbAdapter.getAlarm(item.getId()));
}
});
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
layoutFactory = LayoutInflater.from(this);
// Set up array adapter and viewer for alarms list
dbAdapter = new AlarmDBAdapter(this);
dbAdapter.open();
allAlarmsCursor = dbAdapter.getAllAlarmItemsCursor();
cursorAdapter = new AlarmCursorAdapter(this, allAlarmsCursor);
alarmsListView = (ListView)findViewById(R.id.alarmsListView);
alarmsListView.setAdapter(cursorAdapter);
alarmsListView.setVerticalScrollBarEnabled(true);
alarmsListView.setItemsCanFocus(true);
alarmsListView.setOnItemSelectedListener(new
OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View
view, int
position, long id) {
selectedAlarm = dbAdapter.getAlarm(id);
}
public void onNothingSelected(AdapterView<?> arg0) {
selectedAlarm = null;
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if( resultCode != Activity.RESULT_OK )
return;
Date expiry = new Date(data.getLongExtra("expiryTime", 0));
String title = data.getStringExtra("title");
String message = data.getStringExtra("message");
boolean enabled = data.getBooleanExtra("enabled", true);
int id = data.getIntExtra("id", -1);
Alarm newAlarm = new Alarm(expiry, title, message, enabled, id);
switch( requestCode ) {
case( NEW_ALARM ): {
dbAdapter.insertAlarm(newAlarm);
break;
}
case( EDIT_ALARM ): {
// If we only get the default value of -1 then
something is wrong
if( id == -1 )
throw new RuntimeException();
dbAdapter.updateAlarm(id, newAlarm);
break;
}
}
allAlarmsCursor.requery();
cursorAdapter.notifyDataSetChanged();
}
@Override
public void onDestroy() {
dbAdapter.close();
super.onDestroy();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
// Add menu item for creating a new alarm and
// one for deleting selected alarm
menu.add(0, MENU_NEW, Menu.NONE, R.string.menu_new );
menu.add(0, MENU_EDIT, Menu.NONE, R.string.menu_edit );
menu.add(0, MENU_DELETE, Menu.NONE, R.string.menu_delete );
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
MenuItem editItem = menu.findItem(MENU_EDIT);
MenuItem deleteItem = menu.findItem(MENU_DELETE);
boolean showEditOptions = (selectedAlarm != null);
editItem.setVisible(showEditOptions);
deleteItem.setVisible(showEditOptions);
return true;
}
private void startEditAlarm(Alarm alarm) {
// Tell the NewAlarm activity what to expect
Intent i = new Intent(this,NewAlarm.class);
i.putExtra("expiryTime", alarm.getExpiry().getTime());
i.putExtra("title", alarm.getTitle());
i.putExtra("message", alarm.getMessage());
i.putExtra("enabled", alarm.isEnabled());
i.putExtra("id", alarm.getId());
startActivityForResult(i, EDIT_ALARM);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Figure out which item this is and act accordingly
// If it is to create or edit
switch( item.getItemId() ) {
case( MENU_NEW ): {
Intent i = new Intent(this,NewAlarm.class);
startActivityForResult(i, NEW_ALARM);
return true;
}
case( MENU_EDIT ): {
startEditAlarm(selectedAlarm);
return true;
}
case( MENU_DELETE ): {
dbAdapter.removeAlarm(selectedAlarm.getId());
allAlarmsCursor.requery();
cursorAdapter.notifyDataSetChanged();
return true;
}
}
return false;
}
}
On Jul 23, 6:16 pm, Gregg Reno <[email protected]> wrote:
> It would be great if you could post the code and xml! I'm using a
> SimpleCursorAdapter and would love to see how you are using the
> CursorAdaptor instead. My app is a little tricky because I extend
> TabActivity rather than ListActivity. If I get it working, maybe I'll
> put together a standalone tutorial.
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