Android :: Start A New Activity From A Menu Action - ActivityNotFoundException
Feb 28, 2010
I am trying to start a new activity from a menu action, as follows:
CODE:.............
The class exists, and has the OnCreate method over-ridden, but whenever I try to perform the action in the simulator I get an ActivityNotFoundException raised. I have looked through the documents and as far as I can read, I do not need to create an Intent in the manifest.xml for this to work.
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Dec 9, 2009
I am completely exhausted to think logically right now..... I am sure it is pretty easy to implement
I have a menu item which when selected would call another activity class. I am using switch case to select between menu items. I tried creating an Intent to start activity using the Class name but doesn't work.
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Nov 13, 2009
I want to change the current activity inside a tab in a tab activity, after some research, I know that I need to use activity group to go this.
Then I created a new class extends ActivityGroup with the code below:
CODE:............
Then I run the program, the program throw the ActivityNotFoundException when the intent for the tab is launched.
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Jul 5, 2010
I have a launched android application that works fine most of the time. However 1 in about 1000+ runs I get an android.content.ActivityNotFoundException: Unable to find explicit activity class exception. The activity is declared in my manifest and I've never seen it crash myself. It is declared like this...
CODE:..........
The crash reports show it failing on all OS's from 1.5 to 2.1.
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Aug 8, 2010
I am getting this exception while I am trying to call an activity from another one.. .The complete exception is android.content.ActivityNotFoundException:Unable to find explicit activity class {com.x.y/com.x.y.class};
I am doing an intent.setClass("com.x.y","com.x.y.className") where className is the name of my activity class and com.x.y is the package it resides in.
My AndroidManifest.xml has the following content:
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Jun 23, 2009
The JavaDoc of Context's public abstract void startActivity (Intent intent) said:
This method throws ActivityNotFoundException if there was no Activity found to run the given Intent.
But when I look at the android source code, it does not catch ActivityNotFoundException.
For example in AlarmClock.java:
CODE:..................
what is the code which handles the case when there is no activity for that intent?
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Nov 2, 2010
test.class type is right? How to? What should I do?
CODE:...............
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Feb 7, 2014
I am absolutely new to android and web development. I would like to make an app which I can use to login to my account on a website (URL,,,) and to be able to start and stop the parking time. It should also show the time passed and notify every 30 minutes about it.
I am not looking for code (but of course, it would be nice to have some examples) at this moment but for some tutorial or a list of functions which I need to program to make such an app. If there is an existing application which I can modify for my needs, I can also try it.
I tried to search but the most of the content assumed for people with some knowledge of http post (I even do not know what it is) and others.
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Dec 12, 2009
How to apply on click action on menu in android?
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Jul 23, 2010
I have designed a main menu in android, but now I have no idea how to open that application when I click some specific icon for that application.
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Mar 14, 2010
I need to add an action in the Context Menu that pops up after a Long Press of a Link in the Browser (the one that has 'Open','Open in new window','Bookmark link','Save link', etc.)As a result of choosing my action it should call my service and etc.I don't want my app to overwrite all the context menu of the browser but only add an action to it.I haven't found any information on how to do this. Is it possible?
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Jul 21, 2010
I write a app but it is not doing anything..
code is given below:
CODE:..............................
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Mar 12, 2009
When my application is running, a button is pressed.After my application processes this event, i want to continue to transfer this event to other applications. Is it possible? If yes, how to do that?
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Feb 14, 2010
Can I receive a broadcast event in an activity? I've seen this done in broadcast receivers but not in an activity. In particular I would like to receive an event when a bluetooth device is found. ACTION_DISCOVERY_FINISHED.
Do I need to declare that in the activity intent filters? Should I be using permissions for that? How do I define the callback to handle that in the activity when i get receive the action?
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Jan 26, 2009
I have an application with contains multiple activities. The main activity will start the others ( use startActivity() ) depends on user event, when an activity close, it calls finish() and return back to main activity. It appears to behavior like that.
However, the "problem" I see is main activity's onCreate function is called every time. I think the the main activity should be placed in the activity stack and simply push to front when others exit, therefore only onResume, onStart are called. Is there some flag I need to set or I misunderstand the activity behaviro?
In child activity, besides calling finish() or startActivity for main activity, what is other way to move main activity to front?
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Jan 10, 2010
I created an application which enables the user to set whether he wants to receive notification while the application runs in background mode. If the notifications are enabled an activity should be started (the dialog should appear on the screen).
I tried to enabled it the following way:
CODE:...........
This is the method from main activity. When onPause() is executed isRunningInBackground is set true.
When I tried to debug it when the main application was running in the background the line
startActivity(intent) had no effect (the activity didn't appear).
Does anyone know how to midify the logic in order to start an activity from the main activity when the main activity is running in the background (after onPause() is called)?
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Apr 20, 2010
I have tried to write an Android application with an activity that should be launched from a different application. It is not a content provider, just an app with a gui that should not be listed among the installed applications. I have tried the code examples here and it seems to be quite easy to launch existing providers and so on, but I fail to figure out how to just write a "hidden" app and launch it from a different one.
The basic use case is:
App A is a normal apk launchable from the application list.
App B is a different apk with known package and activity names, but is is not visible or launchable from the application list.
App A launches app B using the package and class names (or perhaps a URI constructed from these?).
I fail in the third step. Is it possible to do this?
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Sep 10, 2010
I need to made an activity (without layout) that on start check if a service is running. if it is true it starts Activity2, if it false it starts Activity1.
I tried with this code:
CODE:............
Enter code here
But when I check, in the onCreate method, if serviceConnect!=null I receive sometime a NullPointerExcption.
I tried also to insert the operation in the method onCreate in an Async Task:
CODE:............
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Apr 22, 2010
I have a huge maze of activities in my application. What I need to do, is that when the user logs in into the system, the activity history should be cleared. I cant just use finish() when I start a new activity, because I want the activities to have a history until the user logs in. I have experimentet with the different flags when starting an activity, but I have had no success.
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Mar 5, 2010
I am trying to launch an activity by specifying only its action(custom) defined in its intent filter from an activity in other application. The activity to be launched is the main activity of its application thus have android.intent.action.MAIN & android.intent.category.LAUNCHER set as action and category in its intent filter. Now according to android doc on Intent and Intent Filter, i do not need to specify DEFAULT category at all in this case. But doing the same i am i am unable to launch the activity.
LogCat says, Activity could not be found...
Am i misinterpreting the text or is there something else missing...?
Code, used for calling the activity
CODE:.............
Definition of Activity being called in the manifest file
COE:....................
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Nov 12, 2010
Can any one suggest some helpful links so that I can get free online tutorial?
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Oct 13, 2010
I have a toolbar view set for most of my activities.
The toolbar has several buttons which all trigger certain intents. Now, the problem is: how can I close current activity before starting another one ?
Problem 1) Activity cones For instance one of the buttons ('A') starts activity A. Activity A also has toolbar. If you press on the 'A' button, a new A activity will be started. I suppose I can look at Activity.getInstanceCount(), right ?
Problem 2) Unnecessary activities The activity X is not needed any more if the opts for A. I just want A then. How can I remove X from toolbar which only has access to context ?
I, of course could find toolbar view inside activity X and override the onClicks, but in general this would mean doing so for all my activities !? Am I on the right track ?
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May 11, 2010
I'm starting with Scala + Android (and using the sbt android plugin). I'm trying to wire a button action to a button without the activity implementing View.OnClickListener.
The button click fails at runtime because the method cannot be found. The document I'm working through says that I need only declare a public void method taking a View on the action, and use that method name in the layout.
What have I done wrong? MainActivity.scala package net.badgerhunt.hwa
import android.app.Activity
import android.os.Bundle
import android.widget.Button
import android.view.View
import java.util.Date. Code...
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Nov 19, 2010
I want to start a new activity from ab activity that (extends from Linearlayout) .. but this code is not right
CODE:..........
public class SearchResultForm extends LinearLayout{ ...
And i get this error ..
No enclosing instance of the type SearchResultForm is accessible in scope.
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Aug 19, 2009
An activity can be called from existing activity through *startActivity(intent); *
Is t possible to call an activity from non Activity class ? and how?
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Apr 8, 2010
I am developing an aplication. This one is designed to login a user, then select how find a place, using simple data or using a map. When I try to set in the event OnClick for select the "Map way" (using intent):
startActivity(new Intent(getApplicationContext(), MapviewController.class));
I have problems and didn't work.
My class and manifest are:
CODE:...........
Do you know any way to call the MapActivity from other?
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Nov 3, 2010
I want to show some notification when android phone is connected to system. I implemented BroadcastReceiver for listening to event android.intent.action.ACTION_UMS_CONNECTED in my application But it is not working. Is it possible to capture this event.
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Oct 31, 2010
I thought that Action was preeminent during intent resolution and if the intent had the same action as the intent filter, it would be considered a match regardless of data, if the filter did not specify anything. So I was very surprised to find that supplying action+data where filter had only action, causes it to fail. In the code below, if you comment out line 47 so that data is *not* sent, only then it resolves correctly. To get it to work with the data (an id that is simply a String), what mime type should I specify in the intent filter?
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Jan 5, 2010
I am working on a travelling application and i am using tabs and each tab has an activity i.e world clock in one tab ,weather data in another tab and so on with in the weather tab i am displaying the users selected cities and the scenario is that when the user selects a city that city's forecast is to be displayed and later to view details as well which is in another activity . how can i launch this new activity from the already started activity with in the same tab ?
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Sep 13, 2010
I'm trying to start an Activity with startActivityForResult, but I keep getting an ActivityNotFound exception, and I can't work out why. I've looked through the code multiple times, and it seems to be identical to some other, working code. Any suggestions?
The newNoteButton that starts the Activity:
CODE:...........
And the beginning of the TypyEdit Activity:
CODE:................
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