Android : Method In ListView Handling Fling Action (up And Down)?
Mar 24, 2009Which method in ListView is handling the fling action (up and down)? I look at the source of ListView, I don't see a GestureDectector there.
View 10 RepliesWhich method in ListView is handling the fling action (up and down)? I look at the source of ListView, I don't see a GestureDectector there.
View 10 Replieshow can I detect Fling action in my own widget? I have implemented my widget as OnGestureListener.
And like in Gallery, I have a "GestureDetector mGestureDetector = new GestureDetector(this);"
For my onTouchEvent(), I have @Override public boolean onTouchEvent(MotionEvent event) {
// Give everything to the gesture detector boolean retValue = mGestureDetector.onTouchEvent(event); return retValue;
But my public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) is never get claeed.
how implement android's Gallery fling action (with the animation) in my own widget?
View 4 Replies View RelatedIs there a way I can programatically perform a Fling on a listview? I know there is monkey that does all these things but that requires a computer connection with adb etc etc. I want to do it with my app on any phone, without monkey.
View 2 Replies View RelatedIn android, most event listener methods return a boolean value. What is that true/false value mean ? what will it result in to the subsequence events ?class MyTouchListener implements OnTouchListener {@Override public boolean onTouch(View v, MotionEvent event) {logView.showEvent(event);return true;}Regarding to the above example, if return true in onTouch method,I found every touch event(DOWN,UP,MOVE,etc) has been captured according to my logView. On the contrary,if return false, onely the DOWN event been captured. So it's seemd that return false will prevent the event to propagate. Am I correct ?Furthermore, in a OnGestureListener, many methods have to return a boolean value too. Do they have the same meaning ?
View 3 Replies View RelatedI create a CursorAdapter to provide data for my ListView.
I implement the bindView() method to show data in a row of my Listview.
But at the end of my bindView, I add an clickListener to it. But when I run it on emulator, I don't see any print statement.
Can you please tell me how to add event handling in a row in ListView? code...
When I have listview and I use some listadapter provided by android API then when you touch item in list it flashes with orange colour and then action is processed. If I have my own adapter this flash doesn't happen. Instead text color changes to black for a moment (and becomes unreadable). Is there something special I need to do to enable it? My adapter is actually based on cursoradapter and all it does is that it adds onClick handlers to some of controls used in list item layout and sets values of some widgets which are not handled by simplecursoradapter by default.
View 8 Replies View RelatedI have created a tabbed view with four tabs and attached four listviews to the tabs. I have created separate classes with the list views in them and I now want to add a activity to the list view
CODE:.........
I have 24 teams in the listview and I have created a class for each one, but how can I make it so that when the user selects the team in the list it goes to the class in question i.e bury,bradfdord accrington ect.......?
What method should I use and how do I implement it.
I have an Activity which contains a ListView defined in XML (its not subclassing the List Activity class).I want to display a message when the ListView is empty, so I tried doing so with the setEmptyView method: Code...
View 2 Replies View RelatedI have a single screen with a bank of buttons below a ListView. Entries on the ListView light up in orange when I scroll so I assume that are selected. When I then press the "Delete" button I want the onClickListener to remove the currently selected entry. But getSelectedItemPosition() always gives me -1. If I can't hope to use the GUI controls in this way, please give me another way of getting the same result.I have even tried setting the onClickListener of the List View to store the index before the button is pressed (in case pressing the button unselects the entry) but even that is always -1 it seems.
View 1 Replies View RelatedI 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.
View 3 Replies View RelatedI 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?
View 11 Replies View RelatedI'm totally new to this, been tinkering around for a week.
Came up with a simple image viewer app for 2 images.
Feature:
Left and right swipes will switch the images. Dead simple.
What i'd like to do:
Have up to 100 images.
note:
All my images are in my res/drawable folder.
They're named image1.png to image100.png
I obviously don't want to do:
ImageView i = new ImageView(this);
i.setImageResource(R.drawable.image1);
viewFlipper.addView(i);
ImageView i2 = new ImageView(this);
i2.setImageResource(R.drawable.image2);
viewFlipper.addView(i2);
ImageView i3 = new ImageView(this);
i3.setImageResource(R.drawable.image3);
viewFlipper.addView(i3);
all the way to i100. how do I make this into a loop, which is flexible and reads everything from the drawable folder ( and not be limited to 100 images)?
source: Code...
So my application has a large amount of textual data. Up until this point I've been using forward and back buttons to navigate from section to section. I was impressed with the horizontal scrolling of the Ebook reader from Alkido that is available on the store which uses a horizontal fling gesture to flip the pages. Does anyone have any experience doing something like this? I've done it a number of ways, but none seem to be very smooth or efficient.
View 2 Replies View RelatedI am using bitmap image that i have to rotate on fling. its actually a circular image that will act like a spin wheel. so image resolution is like 1000 x 1000 but when i rotate this image and redraw it android give me an exception " java.lang.OutOfMemoryError: bitmap size exceeds VM budget "
View 2 Replies View RelatedI'm trying to override the onBackPressed() method of the ActivityGroup class:
public class MyClass extends ActivityGroup {
@Override
public void onBackPressed() {
// do something
return;
}
but I'm getting the error The method onBackPressed() of type MyClass must override a superclass method. I'm relatively new to Java, I've seen here that people do it and it works for them Why I'm getting this error? I'm writing an app for android 1.5, could the problem be here?
In Eclipse, when I mouse hover over a built-in method, it displays a method definition including stuff like what the method does, input objects, return objects etc. If I have a yellow line (warning) under the method I'm trying to use, I can't get the mouse-over to show the definition. If I try hitting F3, I get a "The Jar of this class file belongs to container "Android 1.6" How do I show the definition of the method I am using when there is a warning?
View 1 Replies View RelatedI am trying to use annotation - method.getAnnotation( ) or method.isAnnotationPresent( ) and it is not working. I am using eclipse emulator for 2.1 OS version with JDK 1.6. Following is information about what I did..................
View 4 Replies View RelatedI have two gallery widgets in same screen. If user flings on top gallery widget I would like to replicate the same fling motion on the other gallery widget thats beneath the first one. Is there a way I can possibly achieve this.
View 2 Replies View RelatedAndroid device is much slower and have much lower memory compare to PC/server, So what is the best way to handling XML in Android? And I have a set of very complex xml needed to parse. both SAX or DOM will cause too much code. Anybody have good suggestion? I want to make it clean and fast.
View 4 Replies View RelatedI created a method called insertTable in a class called Table but i can't use it in my onClick method in the main class :
CODE:.......
I want to do a income.insertTable in the onClick method but eclipse say that i need to create a local variable.
I read somewhere not to exception handle when developing in Android, is that true?
If one does need to exception handle are there any logging tools for 2.1 and above?
If shouldn't exception handle, why is it not recommended to at least use the below?
try {body-code} catch (exception-classname variable-name) {handler-code}
I'm using a PostMethod, and wondering what try/except handling I should use.
The exception handling here seems to work okay in most scenarios, but is there anything I might be missing? In particular, I'm wondering whether this handles the network connection going down midway through the upload.
CODE:...................
I've been wondering if Handcent is supposed to move all my pictures to the top of each thread? And is there anyway to save the pictures with Handcent?
View 2 Replies View RelatedFrom the documentation regarding the android:configChanges='orientation' attribute of the activity tag in the manifest:
Using this attribute should be avoided and used only as a last-resort. Please read Handling Runtime Changes for more information about how to properly handle a restart due to a configuration change.
Why does it say this?
In the case of threads and networking requests via a service API library, a request could be made with a reference to the original Activity, and then an orientation change could occur, leaving the thread pointing to the old Activity.
While this can be fixed, it's tedious and ugly compared to just handling the configuration changes yourself.
Why should it be avoided?
I guess I should also ask: would this be an acceptable reason for doing the orientation configuration changes yourself?
I'm trying to do is draw circles around two points that are being touched, and as the fingers drag along on the screen, have these circles follow each finger.
However, I'm getting some weird behavior that I can't figure out. So when I place two fingers on the screen I get my circles no problem. When I drag around with the two fingers everything works like I want it. However, if I lift the first finger, everything stops redrawing, and the second finger that is still on the screen stops being tracked. If I place the first finger back on, everything behaves good again. I figure I must be handling the two fingers poorly.
Also, if I have two fingers on the screen, and I lift and touch the second finger, everything behaves well. It's only in the case where I have two fingers and I lift the first one do I see a problem.
CODE:........................
I know how to use handlers to update UI elements such as progress bars toasts etc. The problem I am having is when the context goes away such as the user pressing the back button or the Activity finishing for some reason. This causes my application to crash often. I tried using
getApplicationContext()
(Thinking that this would be available throughout my entire application) but this did not work, ever - instead my application crashed! I put try catch blocks around all UI update code, this works but is it necessary? What is the bast way to handle this?
I have some required try/catch statements in my application that in my testing never get called. I have sent them up with:
Log.e("messaage", e.toString());
For my debugging and now that I'm ready to release I am not sure if I should take that out or not. I see in android market you can get error/crash reports and while I do not expect my app to catch any errors, I would like to know if that happens and wondering if I need specific syntax for that. My question is what should I do in the catch statement for these errors? I'm already handling the error from a user standpoint...
I want to handle key press and long key press for the key code KEYCODE_CALL(dial button). can any one suggest me how this in android 1.5(API level 3).
View 2 Replies View Relatedin my app a background service starts and from that service i want to set Status bar notification, that the service has Started following is the Notification is displayed in Status bar But whin i click on that MyClass.class is not fired.And in log cat it shows
"Input Manager Service Window already focused ignoring focusing ...." Code...