Android :: Starting An Activity By Sending An Internet With Extra Data
Feb 19, 2009
I have a newbie question which is puzzling me regarding using Intents to start a new Activity but passing some data with the Intent for the new Activity to use. My app has (say) MainActivity from which I want to launch a second activity, SecondActivity, within the same app, whilst I pass an integer parameter to SecondActivity. Now my problem is : how do I receive the Intent when SecondActivity gets started and recover the value of the integer parameter ? Which member function of.
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Feb 18, 2010
My app needs to send some data to a server when the device is connected. I have been reading about native Android Broadcast actions. I was willing to find a way to use one as gmail does when the device connects to the Internet. (The "loading" icon on the top while it syncs mails) Is it ACTION_SYNC what I am looking for? If not, how does gmail knows when the device connects to internet?
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Oct 19, 2010
my application is not a service, it's a normal application, with some windows and some stuff. i dont wanna make it a service cos is too munch complicated and i prefeer to avoid it then, if my application is not a service, when it goes to background (home key pressed for example), it continues working (sending/getting data from internet)? i ask this because i read this on a developer guide tutorial: "Because an Activity can perform actions only while it is active and in focus, you should create your status bar notifications from a Service"
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Sep 23, 2009
I am having issue for sending data from service to Activity through notification , I click a notification a activity get invoked but when i try to add some parameters through bundle i am not able to get the parameters in that called intent , I have gone through the link
http://stackoverflow.com/questions/1198558/how-to-send-parameters-from-a-notification-click-to-an-activity. but still no luck has any body occurred with the same issue.
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Feb 16, 2010
I am little confused with the use of intents used for sending data to activity from service. In my application I have to have startactivity from the service and have to pass data ,so that activity can utilize the data while launching.For this i have written the following code Intent intent = new Intent(Service.this,Activity.class); intent.putExtra("data", data); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.start Activity(); I assume that the data is passed to the activity and can be parsed on the oncreate function of the activity.Now the service running in the background has to pass data to the activity continously for UI updates.For this I have written the following codeIntent intent = new Intent(Service.this, Activity.class); intent.putExtra("Data", data); intent.setAction(Intent.ACTION_ATTACH_DATA); sendBroadcast(intent,null); (Do I need to broadcast the intent???) In activity I have done following things:- Implemented broadcast reciever:private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if (Intent.ACTION_ATTACH_DATA.equals(intent.getAction())) { Bundle extra = intent.getExtras(); float Data[] = extra.getFloatArray("Data"); update(Data);
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May 28, 2009
I have two activity Main activity and child activity when I press a button the child activity is lunched. Still now I have no problem. I want to send some data back to the main screen. I used The Bundle class but it is not working. It throw some run time exception.
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Aug 13, 2010
I am a bit new to Android. What I need to do is send data back and forth between an activity and a service locally. The information sent is sensitive and must not be able to be picked up by other apps. This excludes using broadcast and the onBind() function if I understand things correctly? So the activity needs to send some string parameters to the service. Also it somehow needs to tell the service which activity started it so the service can reply to the correct class since many different activities will use this service.
Once the service has fetched the information via a http request it is suppose to send that data (just a long string which will later be parsed) back to the activity that started it. How do I go about doing this? Using static variables/functions is not an option since again many actives will be using this service. Sure it would be possible to use a static array to hold the classes but that just seems ugly. It's only possible to send simple variables (not objects) via the intent? There must be a better way to do this.
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Dec 4, 2009
Need an example of how to create/start a new activity from the main activity. I have a button click event on the main layout. Originally I just used setContentView(R.layout.secondactivity); which brings up the layout but I don't think that is correct since the secondactivity class is not instantiated at this point yet. I have looked for such an example and can not find one.
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Jun 3, 2010
Can "tethering" on the EVO realistically replace a home internet connection on a desktop computer? I have 2 computers at home that rely on AT&T DSL for the internet (which is really slow). If I get an EVO, can I easily drop my DSL and instead use the EVO "tethering" feature? Is it complicated to use? That is, I sometimes just want to quickly check a website, and if it's hard to set up every time I want to use the internet on my desktop, it won't be worth it. Does it cost extra to "tether" the EVO to a home desktop computer?
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Apr 25, 2010
I have a map app which works fine when its stand alone but it causes an unexpected error when I try to add it as part of another app. My current app which extends Activity tries to launch the map activity with the following lines of code Intent m = new Intent(this, HomeSetter.class); startActivity(m); I also have the xml setup correctly <activity android:name=".HomeSetter" android:label="Screen 4"> </activity> <uses-library android:name="com.google.android.maps" /> </application> However when I try to launch it crashes everytime. I've tried searching the net but I've had no joy in finding a solution You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscribe @googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
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Oct 2, 2009
startActivity() displays the new Activity on top of the current one. But how to display it underneath instead? BTW, I'm starting an Activity from another application, if that makes a difference.
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Jun 9, 2010
When I was originally learning about Android a few months ago I swear I read something about a way to immediately launch an activity when starting a task. I am curious about this now because I need to display an intro screen on launch but I don't want the intro screen to be the root activity. Does anyone know if there is something like this and if not what is the best way to handle an intro screen?I tried googling for a few hours to find it but can't for the life of me.
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May 27, 2010
Based on the Searchable Dictionary sample I tried to put extra data to a different activity. In my Map Class Distance is always zero because distance.getSelectedItemPostion() gets the initialized value. How can I put Extra data with a click on a search?
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Feb 2, 2009
I am trying to launch an activity from another activity .. Within the com.android.SingleLauncher..
I have activity launch code as ..
CODE:...........
I have set the android:multiprocess="true" in the AndroidManifest.xml of TargetSL I don't seem to see the multiple instances of TargetSL, which i am expecting ..
All i see is 2 process, where i was hoping to see an instance of TargetSL, for each launch that was invoked by the singleLauncher!
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May 12, 2010
In order to provide the best experience, HTC EVO 4G will use Sprint's industry-leading Everything Data or Business Advantage Messaging and Data plans that include unlimited Web, texting and calling on the Sprint Network to every mobile in America with Any Mobile, AnytimeSM. Everything Data plans start at $69.99 per month. A $10 per month Premium Data add-on will apply allowing customers to take advantage of a richer data experience than ever before.
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May 9, 2010
I'm using the built in sqlite library on the Android platform.
I'm considering adding several general purpose fields that users will be able to use for their own custom applications, but these fields will be blank most of the time.
My question is, how much overhead will these blank fields add to my database? Do null fields even take up per record memory in sqlite? If so, how much? I don't quite understand the inner workings of a sqlite database.
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May 7, 2010
I have four activity in a Tab and after the user clicked on the list I would like to start another one activity, but I can't use startActivity(Intent), because then I lost the TabHost view, and I get an activity witch is reserving the full screen:( So the user won't be able to click on the other tabs. What should I use? BroadCastReciver or What? If anyone have any good idea please help on me.
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Mar 25, 2010
I have the code to get the list of packages installed in phone. I have represented the list in the form of Array List, below is the code snippet. But upon clicking in the package name I want to start that application, but how do I get the respective class name and package name to run? Is there any other method which I can try to start an application? arrayList<String> PackageNames = null; List<PackageInfo> lis = pm.getInstalled Packages(GET_MINIMAL); Pkgs = (ListView) findViewById(R.id.package_list); for (Package Info pi : lis)packages.put(pi.packageName, pi); PackageNames = new ArrayList<String> packages.keySet()); Collections.sort(PackageNames); PackageNames.add(0, "All"); pgs.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple _list_ item_1, PackageNames)); Pkgs.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> arg0, View v, int pos,long rowId) { Intent i = new Intent(); i.setComponent(new ComponentName(class name,packagename)); startActivity(i); I have tried intent to start the activity, but don't know the class name and package name to pass in the ComponentName() to start activity.
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Mar 22, 2010
I'm starting an activity when a button is pressed, and normally (in other apps) haven't had an issue. But when I press the button in this app, I get an "unable to marshal value" error.Exact(ish) error from LogCat:
03-22 02:49:02.883:
WARN/System.err(252):
java.lang.RuntimeException: Parcel:
unable to marshal value
{CLASSNAME}@44dcf1b8
I feel that this might be related to the extra that I'm passing to the intent. I'm passing an ArrayList as a serializable to this new intent. My concern is that the data structure that the ArrayList contains isn't being serialized (as it's a personal data structure).Is the array list content data structure causing this? Something else that I'm missing?
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Aug 19, 2010
I'm working on an app and I want to integrate the Last.fm app into it. Basically, when someone is looking at an artist in my app, I would like to have a button that they can tap to open up Last.fm application with the artist's information.
This intent works, but it loads a menu asking which app I would like to use (Browser or Last.fm):
CODE:..........
However, I just want to start the Last.fm app and skip the dialog asking which app to use, I thought maybe using the setPackage() method would work like this: i.setPackage("fm.last.android");
But it causes the app to crash:
CODE:............
Is it possible to just start the Last.fm app?
Here's a copy of Last.fm's AndroidManifest.xml for reference.
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May 16, 2010
I followed the directions verbatim in this Android tutorial, copying/pasting the code from the site to my app. http://developer.android.com/resources/tutorials/views/hello-tabwidget.html
However, when I try to run in the Android emulator, I get the error: "The application Hello Tab Widget has stopped unexpectedly. Please try again."
I tried debugging by introducing a breakpoint in the first line of the onCreate method, but the error occurs before the breakpoint is even hit. Any idea of what is going wrong, or any other way I can debug this issue? I am using Eclipse.
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Dec 31, 2009
I have 4 Tabs in a TabHost...let them be A,B,C,D.... now each one is just an index page and clicking on any of them shows a different activity...
The problem is that i need to start another activity wen user selects something from the content displayed in the tab... The other activity should also be displayed in the parent tab itself... is it by any chance possible or i'll have to try some other way around?
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Apr 14, 2010
I'm trying to start a floating activity from onStart to retrieve some info from the user right when the initial activity begins.
I have the following:
CODE:............
And callProfileDialog() is just:
CODE:..........
ProfileDialog.class returns a String from an input box. If the result returned is RESULT_CANCELED then I restart the activity.
The problem I'm having is that when the program starts, the screen is just black. If I hit the Back button a RESULT_CANCELED is returned then the initial activity shows as well as the floating activity (since it recalled itself when it got a RESULT_CANCELED). Why can't I get the activities show by calling ProfileDialog.class from onStart()? I got the same result when I called it at the end of onCreate() which is way I switch over to use onStart().
I have also tried the following:
CODE:.........
But this doesn't work either. It all works fine once I hit the back button but without doing that, it's all black.
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Jun 23, 2009
I would like to know the reason behind this behaviour.I have a broadcast reciever and in onrecieve i am trying to start an activity,however if i am not giving the flags it is giving an exception .On declaring the flags it is working perfectly fine,why?
I was under the impression that onRecieve runs in the main UI thread and we can launch an activity in onRecieve.Error given by the emulator is self explanatory but still why do i need to create an activity in a new task(only in onRecieve)?
CODE:....................
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Oct 18, 2010
In my manifest file, I have given the application name as MyApp and the name of the starting activity as Main Menu.code...
When I see the app icon in the default menu screen of android, the name shown is Main Menu. Why is MyApp not the name shown for the app?
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May 15, 2010
Is it possible for me to add this feature in my game? I just need a little storage space somewhere on the internet to put the names and scores of the best players
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Feb 9, 2010
this button is shown on my start activity. After pressing it a new activity will be launched but this takes some time cause on initialization of that new activity some data is gathered from the Internet. This works half. The progress dialoge is shown but the progress wheel is not spinning.
Can somebody tell me why this happens?
Button b4 = (Button) findViewById(R.id.Button01);
b4.setOnClickListener(new View.OnClickListener() {
public void onClick (View view) {
final ProgressDialog pd = ProgressDialog.show(pak.this,
"", "Working..", true);......................
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Jun 2, 2010
I need a way to detect if this is the first time the user is ever opening the application, if so, start an activity. Then all previous application launches wouldn't start that activity. I've read in a few places about using preferences to accomplish this. Anyone got any ideas?
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Aug 18, 2010
I have an activity class(Application Class ) which calls a service class(Service Class) and closes. The service class takes about 5 seconds to complete its task and calls a method which is present in another class(Callback Class). Now according to the result, the callback needs to notify the Application class.Once i get the callback from the service, I tried calling a method defined in the Application class. In this method i create a new intent of Application class and call startActivity(Application Class). But this is not working. Can anyone tell where i am going wrong and what can I do to solve this issue.
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May 28, 2010
I am trying to launch the Main Activity from a broadcast receiver. Can anyone guide me as to how I can do it? I always get "Process is Bad" message.
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