我正在编写一个应用程序来管理日历应用程序中的警报和事件。当我试图获取有关自定义对话框中报告的事件的所有信息时,我遇到了问题。我尝试了很多东西。我在互联网上看到的最后一件事是使用意图。但是,只要对话框可以发送信息,我就不知道如何接收它。我尝试使用广播接收器,但它没有用......
- >以下是对话框的代码:
public class AddingEventMenu extends Dialog implements OnClickListener {
Event event = new Event();
private Button b;
Context context;
public AddingEventMenu(Context context) {
super(context);
this.context = context;
this.setContentView(R.layout.addbuttonlayout);
this.setTitle("Adding Event");
this.setCancelable(true);
this.b = (Button) findViewById(R.id.addEventButton);
this.b.setOnClickListener(this);
}
public void onClick(View v) {
String color;
DatePicker DP = (DatePicker) findViewById(R.id.datePicker);
TimePicker TP = (TimePicker) findViewById(R.id.timePicker);
EditText ET = (EditText) findViewById(R.id.eventText);
Spinner SC = (Spinner) findViewById(R.id.colorSelector);
Intent intent = new Intent();
intent.setAction("New Event");
color = SC.getSelectedItem().toString();
if (color == "Red") event.eventColor = Color.RED;
if (color == "Green") event.eventColor = Color.GREEN;
if (color == "Blue") event.eventColor = Color.BLUE;
if (color == "Magenta") event.eventColor = Color.MAGENTA;
intent.putExtra("Text", ET.getText().toString());
intent.putExtra("Day", DP.getDayOfMonth());
intent.putExtra("Month", DP.getMonth());
intent.putExtra("Year", DP.getYear());
intent.putExtra("Hour", TP.getCurrentHour() * 100 + TP.getCurrentMinute());
intent.putExtra("Color", color);
context.sendBroadcast(intent);
Log.d("State", "Es un primer paso");
this.dismiss();
}
- >这里是主菜单代码:
public class Timetable extends Activity {
public static List<Event> eventList;
EventManager eventManager;
LinearLayout eventListLayout;
ImageView addButton;
EventDatabaseManager db;
BroadcastReceiver BR;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.layout_timetable);
BR = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() == "New event"){
Bundle extras = new Bundle();
Event event = new Event();
extras = intent.getExtras();
event.eventText = extras.getString("Text");
event.eventDay = extras.getInt("Day");
event.eventMonth = extras.getInt("Month");
event.eventYear = extras.getInt("Year");
event.eventHour = extras.getInt("Hour");
event.eventColor = extras.getInt("Color");
Log.d("State", "Esta funcionando");
saveNewEvent(event);
}
}
};
db = new EventDatabaseManager(this);
eventListLayout = (LinearLayout) findViewById(R.id.eventListLayout);
eventManager = new EventManager(this);
eventList = eventManager.getEvents();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.layout_timetable, menu);
return true;
}
public void onAddButton(View button) {
AddingEventMenu aEM = new AddingEventMenu(this);
aEM.show();
}
public void saveNewEvent(Event event) {
eventList.add(event);
db.addEvent(event);
}
在主要的活动中,我定义了广播接收者,但我认为这是错误的,因为它没有任何东西。
我希望有人可以帮助我。谢谢你的时间。
答案 0 :(得分:1)
您注册了广播接收器。你可以这样做:
IntentFilter filter = new IntentFilter();
filter.addAction( "New Event" );
registerReceiver( BR, observerFilter );
您应该将此代码放在onCreate方法中。不要忘记使用
取消注册接收器unregisterReceiver( BR );
在onDestroy方法中
你还使用
intent.setAction("New Event");
在你的onClick方法中,但在你的onReceive方法中使用
if( intent.getAction() == "New event" )
将其更改为
if( intent.getAction() == "New Event" )
答案 1 :(得分:0)
为了将来兼容,您应该考虑使用DialogFragment代替 Dialog
使用DialogFragment时,您可以向DialogFragment
类添加自定义侦听器,如下所示:
public interface EventAddedListener {
public void onEventAdded(Event event);
}
然后将其添加到您的DialogFragment
。
选择活动后,您拨打listener.onEventAdded(event);
并在Activity
内处理结果。
但即使使用IntentFilter
,您也可以使用sinisha提供的更复杂的DialogFragment
解决方案。