Android :: Methods Of Intents Activity?
Jan 8, 2010
I have two applications A and B (in different packages,but it doesn't matter).Application B is an sms application that i have made and contains one activity.This activity has a method called sendSMS(String number,String text).I want to call this method from application A and send an SMS without opening the activity(the GUI) of application B but just send an SMS in the background by calling just the method of the activity.Any ideas?
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Mar 12, 2010
How can i call one activity to other activity without using intents and services?
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Apr 27, 2009
Is it possible to call methods of a Activity from service. I am running a thread from a service and i listening to some external event from that thread. I am not able to call methods from that thread. Is there any way to call methods from a thread.
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Nov 22, 2010
I want see the state of my activity (Pause Stop Resume etc etc) without override each methods like this: Code...
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Sep 15, 2010
I'm binding to a local Service (that is, not using IPC and AIDL) from several activities. I want to ensure that I'm not holding references to this service from activities that the user isn't using. My options are: 1.) to bind to the service in onCreate() and unbind in onDestroy(). 2.) bind in onStart() and unbind in onStop(). 3.) bind in onResume() and unbind in `onPause(). Or some combination of these. Which is the best-practice way of binding and unbinding to a local service? Do I not need to be concerned with holding local connections from stopped activities? Additionally, once bound to this particular service I am retrieving a Cursor which is attached to my ListActivity via a CursorAdapter. The data retrieved by the Cursor may have changed while the Activity was out of view so I want to requery it when the Activity is shown again. If I bind in onCreate() I can requery in onRestart(). If I bind in onResume() each time the data will be fresh because I'll query it in the Service's connected callback.
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Sep 19, 2010
Developers. I am a newbie to Android but a seasoned developer in UI, Java , and ECLIPSE. I am trying to do something I believe is very simple yet I am struggling. I have two tabs, A & B. I want to put an Activity in each tab. I want to have the 'B' Activity live inside 'A' so I can access it within 'A'. 'A' has a clock and every second that passes I need to update information in 'B', even if 'A' is not currently shown. I put 'B' into the 2nd tab as follows:TabSpec mapInfo=tabs.newTabSpec("tag3"); Intent intent = new Intent(this, MathleteMapActivity.class)mapInfo.setContent(intent); mapInfo.setIndicator("Course Map");tabs.addTab(mapInfo); I am totally confused on how to get the "MathleteMapActivity" Activity from the Intent 'intent'. There appears no way to do this. Can anyone please recommend a cleaner way to do this knowing what I am trying to do?
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Aug 9, 2010
I am implementing a simple app. I need to start an activity based on the state of the Activity. Lets take i am using a button to start the activity.
1. If the activity is not started, I need to start XYZ activity.
2. If the XYZ activity is on focus, then i need to close the activity on the button press.
3. If the XYZ activity is not in focus (like onPause) state then, I need to change the button state.Can you please help me in the flags that i need to use for starting the intent. Is it possible to get the state of activity before I start that activity?
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Aug 25, 2009
I have a click listener:
private OnClickListener onMyListener = new OnClickListener() {
public void onClick(View v) {
myMethod();
} };
And my Method:
private String myMethod() {
TextView tv = (TextView) findViewById(R.id.TextView1);
return (String) tv.getText();
}
When it calls this method, at tv.getText() it breaks in the debugger.
With this in the stack --
ViewRoot.handleMessage(Message) line: 1571
ViewRoot(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 3948
Method.invokeNative(Object, Object[],
Class, Class[], Class, int, boolean)
line: not available [native method] Method.invoke(Object, Object...) line: 521 ZygoteInit$MethodAndArgsCaller.run() line: 782 ZygoteInit.main(String[]) line: 540 NativeStart.main(String[]) line: not available [native method]
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Sep 22, 2010
I am trying to start an activity from the notification bar but it needs to get an int. From activity to activity I would just put an int into the intent but I can't seem to figure out where to add the extra for the notification bar? Is this possible? If not is there a better way to do it?public void notifyMe()Code...
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Jan 5, 2010
I know that Android provides some useful methods to be overridden in order to define a menu:
CODE:..............................
I would like to have this menu shared by each Activity and ListActivity of my Android application. This is for having a standard menu in each (List) Activity that lets the user jump to every part of the application within a click.
Right now, the easiest way to achieve this is to copy-and-paste both methods in every (List) Activity of the application. I don't like this redundancy of code written.
Is sub-classing a reasonable choice? I've already seen that sub-classing one of my ListActivity does not work very well (threads that retrieve objects from a database are giving problems). Are there other ways to share a menu though Activities?
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Jul 2, 2010
How to send any message from one activity to another using intent and intent filters?
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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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Mar 30, 2009
How do you pass an intent from a service to a new activity launched from a main activity? There's a passextra( intent src ); but I don't think thats what I am looking for?
activity main > start service( intent wuteverserviceintent );
activity main > start activity( intent newactivityintent );
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Nov 24, 2010
I am pretty new to this but I was told I could get good help here. A friend and myself are playing around with creating Android apps (using ADT)
Here is how we are trying to make the program: in activity, user sets threshold values for the X and Y axis on accelerometer. When user hits button "Start", startService is invoked and starts TiltService.
TiltService is designed to run in the background always on the phone without user interaction. TiltService constantly compares the threshold with the accelerometer values and will vibrate if they are off.
My problem is I can't seem to get the putExtra() data correctly. I have overridden the onStartCommand in my service but I get the message "unreachable code" when I save the getExtras() to a bundle.
Here is the relevant code (I can post the whole thing, just do not want to clog up page) code...
I thought I understood the basic of how Intents could pass data, but I guess I don't. Is it obvious what I am missing?
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Mar 14, 2010
I'm looking into writing simple graphics code in Android and I've noticed some synchronized() blocks. What is the reasoning behind this and how do I know when I should be "synchronizing" my code?
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Nov 7, 2009
I have some code that is creating and removing alarms, and which works great in Android 1.5 and 1.6 but breaks on the Android 2.0 AVD.The code that's giving this exception is: Code...
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May 14, 2010
I have written a number of applications for blackberry and am just starting in Android. It seems to me that android has a lot more built in functions. I am starting by recreating some of my BB apps on Android and on one I take a few xml sites and parse them out. On blackberry I implemented this by creating a class that extended a thread. I would construct a new instance of this class with the parameters of my http request and it would call a function back in my main class, sending it the results. I am tempted to reuse my code, but am curious if android has something better built in. I have been looking at the handler class as well as possible using a service.
Bascially, I would like to start a new thread that will return a document of a specific url.
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Dec 30, 2009
On methods like these kind, onItemClick(AdapterView parent, View view, int position, long id), what's the difference between position and id.
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Oct 10, 2010
So I'm writing an Android app which uses a large c++ library. I have everything working so that the java app can call the c++ delegation methods, but I'm finding myself wishing I could log messages from c++ to the Android log. This is easy from java, but I'm at a loss as to how to call a java method from c++. My searches found methods for opening a jvm from c++, which is not at all what I want to do. Ideally, I'd like to pass a log method pointer to c++, which could then be used whenever I wanted. Of course, java doesn't support method pointers.
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Jun 15, 2010
I have a MapView where I would like to be able to tap the map to create a new item at that location if there is no item there, or display the info about the item if there is.
I tried overriding both the onTap(int) and onTap(GeoPoint, MapView) methods but apparently if the second method is overridden the first never gets called (commenting one or the other lets each one work as I expected).
I thought about just checking if an item was at the location, but there doesn't seem to be any handy methods available to do that (other than iterating through the list of items and checking each manually).
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Nov 1, 2010
I know rule #1 of optimization is: don't do it! But I figured this was an easy question, and if I start using the faster method now I can save a lot of cpu time when I'm finished.Now, the answer to my question may be "there's no difference" and that's fine with me. I just want to know.
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Sep 1, 2010
1. what is the getKeyDownTime() method? What does its return value mean logically? 2. what is the getKeyEventTime() method? What does its return value mean logiccaly? 3. I want to measure the time a key was depressed for. Eg: Key A was pressed for 60 ms. which of the above methods would be useful?
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Aug 11, 2010
Just out of curiosity how many people use Swype vs. Voice to Text vs. other means for text input. If I forgot a method just say it out loud.
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May 28, 2010
is there a methods to keep mobile phone off using code, i have no idea about this,and hope someone give me some advice,or example , code,api
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Jun 20, 2010
I have Activity A and Activity B. I want to access a method in Activity A from Activity B. This is my method:
Activity A extends activity{
public void save(){
} }
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Nov 24, 2010
Need help closing/accessing my views in a simple app (included an img of my program layout) but I might have been too confusing. Basically, I have an app that has a main menu where the user can click a button to open a camera. The user then snaps a photo and it is displayed on a page. The user will then click another button that detects faces. If faces are detected, the user is sent to a final page that shows the cropped face, etc. I give the user the ability to return to the main menu or snap a new photo.
Let's say a new photo is snapped and the user does it a few more times. Now I have multiple saved instances of old snapped photos (presented on the layout). How do I kill the previous instance (the layout from before he decided to snap a new photo)? So when I try to close the app it doesn't go back to the previous instance (displayed layout of said snapped photo). I am so confused on this one thing.
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Oct 1, 2010
I have an Java class with a static final method getAll:
CODE:..............
Now I want to hand in null as a value for the where statemant so that it will just be ignored later on in the code. Anyway in the testcase for this method I have: Vector<Category> categories = Category.getAll(context, null);
Which then in turn gives me a NoSuchMethodError. I don't know exactly why it does that. The only thing I could imagine is that the null I hand in would not match the signature of the above method. But how can I overcome this? I already thought of overloading. But this would just end in rewriting most of the code. At least when I do it, how I think.
This is the stack trace I get:
CODE:.......................
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Jul 21, 2010
I am curious whether the AIDL only serves for inter-process communication between several Android apps on the same device, or AIDL provides much wider functionality. Let's say I have a Java application running on some server, is it possible to remotely call methods on that server through AIDL from an Android phone?If yes, do I need some extra libraries on the server-side Java application?
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Sep 7, 2010
I want to create one method and call the created Thread inside that method in my Android Application, I am new to Java as I had told before. Can anybody giive me an example of how should I create a method and call a Thread inside that method!
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Nov 20, 2009
I've a couple functions that basically parse XML but it's not XML it is parsing something similar. I use them in PHP to break apart large strings so I converted them to Java for this, but when I use them they force close. I use this code to call them....
CODE:..........
That's the gist of it. I know the string "str" is good, checked it, but if I run these lines I get a force close, if I comment them out I do not. The methods are below. See anything wrong?
CODE:...................
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