I have an "open" animation and am using Handler.postDelayed(Runnable, delay) to trigger a "close" animation after a short delay. However, during the time between open and close, there is possibly another animation triggered by a click...my question is, how would I cancel the "close" animation in the handler?
View 1 Replies
I want to place an animated marker showing a user's current location in an Overlay over a MapActivity. I need to be able to turn the animation on and off.
I thought this could be accomplished as follows:
CODE:..............
The constructor is invoked from the main MapActivity.onResume() using
locationOverlay = MyLocationOverlay(this)
And the animate/draw is invoked by
CODE:.................
However, the run() method never seems to be invoked.
I have looked at every discussion and thread I can find on getting this to work but it is not. I have a simple timer that updates a text view (mTimeTextField in the example below). The mUpdateTimeTask run method is being executed correctly (every second) but the UI/text field is not being updated.
Here is the code:....................
I made a simple countdown timer and it works as expected when plugged in via usb for debugging but when I take it off debugging and the screen goes off either time out or power button the handler fails to fire at the end time. I have created a custom timer class that gets created from the main activity when needed, because its able to have multiple countdowns running at the same time. Am I right in thinking that the handler just gets paused when the screen goes off and if so what are my alternatives. The activity is still in the foreground and I assumed the handler would still fire if the screen goes off.
View 13 Replies View RelatedI have looked at every discussion and thread I can find on getting this to work but it is not. I have a simple timer that updates a text view (mTimeTextField in the example below). The mUpdateTimeTask run method is being executed correctly (every second) but the UI/text field is not being updated.
Here is the code:.........................
I have a Thread that downloads data from internet
CODE:..........................
There is an activity that needs to be updated according to downloaded data.
CODE:............................
Whenever I run above code I get NullPointer Exception .Please help me to update the view.
I need to download an image from the internet,in a different thread,and then send that image object in the handler message, to the UI thread.And by the way, is this the most efficient way to pass an object to the UI Thread?
View 2 Replies View RelatedI have recently hit a snag using the Android plugin to Eclipse. For some reason, ALL of my errors being thrown don't initialize and show me the error. Has anyone ever seen this issue before and if so, what did you do to correct it? In particular, I am seeing it when I try to invoke the HTTPGet in a HTTPClient object. If I have no connectivity, then I should get an error. The Catch block does fire when this occurs...however, when I check my general Exception object, the object is NULL (NULL Pointer). Why would this happen if the catch is grabbing the exception?
My exceptions used to be working and I was able to see the stack trace. However, I can no longer see any stack trace regardless of the Exception class I am using. Can someone please help me understand what the heck is wrong with Eclipse, Android, or both? Is there something I am missing on the configuration side?...is this a bug? Mind you, I have already used Stack Overflow for this question. It has been viewed 40 times but no answer yet.
I like to know how can i clone a view object which is already there in the view hierarchy, so that it can be added to the same view hierarchy again.
View 1 Replies View RelatedI would like to know if it is possible to remove one of the frames I added using addFrame in Android?
View 1 Replies View RelatedI'm new to the Captivate and Droid period. I was on the browser and inadvertantly added a page to my favorites that I didn't want. Is there a way to remove favorites once they are added?
View 1 Replies View RelatedI have added a couple of soft keys through navigation_bar.xml in SystemUI.apk. The soft keys show great, but are also showing on the lockscreen, when the others "disappear".
The added ones are Menu and Search, the order is Home, Menu, Recent Apps, Back, Search. This is to be the same as my desire hard keys. I know, no point in it, but have just got used to the soft keys so much!
Anyway, here is my coding, I have removed the android:visibilty="invisble" attribute to no ill effects...I have also added the relevant strings and ids in their respective places..
Code:
<FrameLayout android:id="@id/rot0" android:layout_width="fill_parent" android:layout_height="fill_parent">
<LinearLayout android:orientation="horizontal" android:id="@id/nav_buttons" android:clipChildren="false" [code]...
Could it be to do with the ID's? (I know that when I made the center clock, I added the "@id/clock" and it made the clock "disappear" on the lockscreen, where taking it out the clock stayed in the status bar!)...
I added a folder to my home screen and i cant remove it. any idea how?
View 2 Replies View RelatedI tried the following from an activity:
@Override public void onPause() { super.onPause();
postDelayed(new Runnable() { public void run() { mTextView.setText("I am paused!"); }, 10000); }
The activity, while in the background, still executes the runnable. Is this incorrect? Should we absolutely call removeCallback() from our onPause() handler to ensure that no postDelayed() runnables execute if we get paused? Or is it necessary to do this only in onDestroy()?
I want to do some automated testcase with Instrumentation . Suggest that my AUT has 2 Activity. After clicking the button in ther first Activity, the second one will be shown with new content base on what we enter in the first Activity.) Instrumentation provides us the function called startActivitySync() and return the Activity object for processing. My question is how we can get the pointer of the second Activity after the it is shown by clicking the button on the first activity.?
View 2 Replies View RelatedI would like to convert a Picture object to Bitmap object in memory, without writing data to disk.
View 2 Replies View RelatedI'm having hard times getting my GL thread (from GLSurfaceView) to trigger some code execution within the UI thread (from Activity). I tried it in every possible way (well not every, I missed at least the good one) none worked.
My idea was to get something called from the UI thread (to update some widgets) when the surface is effectively created. So I added to my onSurfaceCreated method the following call:
CODE:.............
This compiles, but when my GLSurfaceView sub-class is constructed a NoClassDefFound exception is thrown, telling me that the class com.my.package.MyGLSurfaceView$1 is not found.
Here's the log:
CODE:.............
The line 297 in MySurfaceView.java is:
private Runnable mUpdater = new Runable () { public void run () { [...] } };
I didn't found clear answer for why my code does not work. I assume it is because I am trying to update textview from runnable. Anybody know some workaround? Code isn't clean off course, I am happy to get that working so far as I am totally new in java.
CODE:...............................
In an existing Android project I've encountered the following piece of code (where I inserted the debugging litter) code...
with not a trace of the messages from the Runnable. So appearantly the Runnable doesn't run(), although img.post() returns true. Pulling the ImageView in onCreate() and declaring it final doesn't help.
I'm clueless. Simply setting the bitmap directly, while blocking the UI thread, does fix things, but I want to get things right. Does anybody understand what's going on here?
(ps. this was all observed on an Android 1.6 phone and android-3 sdk)
I developed one small application to display some text at defined intervals in the android emulator screen.I am using Handler class, small snippet from my code...
When i run this appication the text is displayed only one time.Please any one knows how to run a thread using Handler.
I have an Activity that running on system. I can get the Intent that is used to start the activity. But i don't know how to get the Activity object from the Intent object or something else. Can anyone tell me how to do this??? Note that, I don't use Instrumentation object.
View 11 Replies View RelatedI want to send a broadcast from a new thread is start.
This is what i tried:
CODE:............
But ofcourse i need context..this won't work. How can i handle this.
I'm trying to do an insert to a DB as a result of a user clicking on a button. I want to do the actual insert in the background, so it seems I should use a Handler to do this. The SQLite insert method takes a Context parameter. My problem is how do I get a valid Context inside the Runnable that will do the insert?
View 4 Replies View RelatedI am trying to get a FileInputStream object on an image that the user selects from the picture gallery.
This is the android URI returned by android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI content://media/external/images/media/3
When I try to construct a java URI object from this object, I get an IllegalArgumentException with the exception description Expected file scheme in URI: content://media/external/images/media/3 whereas the android URI shows the scheme as content
Never found a solution for the original question. But if you want the byte stream of an image in the pictures gallery, this piece of code will do that.
CODE:...................
I'm trying to call a method from inside a Runnable that is running. It waits for a string to be entered and when it is then depending on the string (the strings act as commands) it calls a method and is supposed to run whats inside it. code...
View 2 Replies View RelatedI am working on an application wich has its own URI prefix. (dchub:// in this case) is there a way when someone open his browser, clicks on a link starting with dchub:// my app starts using this address? so far found a lot of examples the otherway around opening the browser from your app but thats not what i'm looking for.
View 1 Replies View RelatedI've got 2 classes GLLayer and GLCamTest. I'm attempting to run a method located in GLCamTest...
CODE:..........
I'm looking to run in on a thread from GLLayer but from what I understand I need a Handler..
CODE:.........
I'm starting the Thread from within public void onDrawFrame(GL10 gl) { my question is how would I implement said handler? I've read http://developer.android.com/reference/android/os/Handler.html but I still don't really understand how I'd implement it.
I am very confused about handlers and looper can anyone plz explain it in simple terms to me any good links would be great.
View 3 Replies View RelatedI'm confused as to when one would choose AsyncTask over a Handler. Say I have some code I want to run every n seconds which will update the UI. Why would I choose one over the other?
View 3 Replies View RelatedI'd like to know if Looper can enable handler to handle one message at a time, instead of handling all the messages in the queue together in one blocking call when Looper.loop() is called.
Because the looper sends all the messages in the queue to the handler one after the other in one blocking call, my application displays the ANR message. Instead, I want to be able to handle one single message, one blocking call at a time - the instant it falls into the queue.
The following code illustrates my problem: (pls note the lines referred: 1,2,3,4&5) Question 1: After calling looper.loop in line3, line4 and 5 don't run. Why is this? I tried quit(), but it doesn't help. Question 2: Instead of displaying 0,1,2,3,4 in one blocking call (at line3), I'd like to have 5 different blocking calls for each. Essentially (sorry, if i sound repetitive), I want to be able to use looper in such a way that each time, it ensures only one message gets handled.
Is there a way to do this?
CODE:..................