Android :: Clicking A Rotated ListView Gives Wrong Coordinates

Aug 25, 2010

I have a ListView that can have one or more clickable items. When I apply a rotate animation the coordinates that are clicked correspond to the original position of the ListView items. For example a list with one item in portrait mode rotated 180 degrees will have the item upside down on the bottom of the screen, but the item gets the click event when I click the top of the screen. 180 degrees is just an example I want to be able to move an arbitrary angle.

I've looked through all the listView properties but none seem to have any effect on the clickable coordinates. I would assume willChangeTransformationMatrix would do the trick but it doesn't, neither does invalidate or invalidateViews. Is there a property I'm overlooking or how would I go about moving the coordinates to the right place?

sample code- list items highlight correctly when clicked, rotate with dpad_center, after rotated items highlight when original position is clicked. I've tried animating the animation, animationSet, and layoutAnimationController all same result.

CODE:...............

Android :: Clicking a Rotated ListView gives wrong coordinates


Android : Get Coordinates When Clicking Anywhere On A MapView?

May 7, 2010

I just cant get this working. I tried using the code below with onTouchEventand and it doesn't work.
If i return true at the end of the method, i get the toast with the coordinates but can't move a map, and if i return false, i can move a map but cant display a toast after the user clicks on a map. If i get it right, the other onTap method is used only for clicking on a overlays. code...

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Android :: Motionevent - Multitouch Events Give Wrong Coordinates

Jan 6, 2010

I have been racking my brain to try to figure out what is going wrong here. I wanted to experiment with multi-touch, so I decided to add the controls for LunarLander to the touchscreen.

Instead of adding buttons, I defined regions on the screen that when touched, would act like the buttons on the keyboard (for example, the gas fires as long as you press the screen in the area defined for the gas button, and stops firing when you release.)

To do this, I added the onTouchEvent override to the LunarView class as follows:

CODE:.....................

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Android :: ListView And OnItemSelectedListener And Clicking / Touching

Sep 13, 2009

1. When does OnItemSelectedListener get called?My expectation was that when an element of a ListView was clicked/ touched that the OnItemSelectedListener would be called. My OnItemSelectedListener is not called when a list element is clicked/ touched. (It is called if the list has focus and I move through the list with the arrow keys in the emulator) Is that the way it works? This ListView has an adapter that supplies TextViews for drawing the list elements.

2. With a ListView set up this way who handles display of selected list items? Does the ListView do it or should the adapter configure the views it supplies to make them look "selected?"

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Android : How To Connect URL When Clicking On Droid ListView?

Nov 24, 2009

How do I connect to a URL when clicking on a ListView?

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Android : Change Item In Listview After Clicking?

Apr 10, 2010

I've created a rather complex layout for listview rows where only the first line is visible (the rest use android:visibility="hidden"). When an item is selected, I want all the invisible objects to appear (selected.setVisibility(1)) - checking first if I have to hide again the previous selection.

Here's the (simplified) code..

The problem is that this only retrieves the invisible items in the first Listview row. What's the way to access ListView rows and change 'em?

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Android :: Get Custom Dialog Activity While Clicking On Listview In Droid?

Dec 12, 2009

How to get custom dialog activity while clicking on listview in android?

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Android :: Open A Custom Dialog When Clicking On A Listview Entry

Jun 21, 2010

I would like to open a custom dialog when someone clicks on a listview entry. That dialog will need to know the text that was clicked on in order to display additional information on that particular entry. Can anyone point me in the right direction on how to accomplish that?

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Android :: Mismatch Of Event Coordinates And View Coordinates

Jun 30, 2010

I've been trying to write a little application that recognizes custom events in Android: you hold your finger over a TextView for a certain length of time, and it changes color.I'm using the MotionEvent coordinates and checking if they are within the bounds of a particular TextView, which is within a table.I am just attaching the onTouch listener to the table within the activity.But I get weird errors: the coordinates seem to be off by one view (i.e. if I touch the view below the view above reacts); or sometimes one will react, and the other will not. Any idea what might be going on?

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Android :: Wrong Image Show Up In ListView Rows

Oct 8, 2010

I use this code in my getView:

@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {

LayoutInflater vi = (LayoutInflater)getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.listrow, null);
}
Order o = items.get(position);

if (o != null) {
TextView tt = (TextView) v.findViewById(R.id.toptext);
ImageView thumb = (ImageView) v.findViewById(R.id.icon);

if(o.getOrderDrawable()!=null){
thumb.setImageDrawable(o.getOrderDrawable());
}
else{
tt.setText(o.getOrderTitle());
}

}
return v;}

The problem is when scrolling; sometimes the correct image shows, but sometimes when scrolling back/forward, the images shows randomly and that is not associated with the row. The images are downloaded from the web.

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Android :: Wrong Item Checked When Filtering ListView

Mar 21, 2010

The problem is that when I filter the list the entries switch position in the list view. Take for example three entries: 'A', 'B' and 'C' where 'C' is checked beforehand (i.e. the entry at position 3 in the list). When I type a 'C' on the keyboard, only the 'C' entry is displayed (as intended). Now 'C' is not checked anymore, since the entry has moved from the checked position 3 to the unchecked position 1 in the list.This behavior leads to some not very welcome effects in the app. Is there a way to "move the selection with the filtering", i.e. bind the checked state to the entry and not to its initial position in the list? Or do I need to find a new approach?

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Android :: How To Convert Screen Coordinates To 3d Coordinates?

Aug 5, 2010

i'm created an application where it consists of 3d rotating cube I want to move the cube with respect to the drag on the screen.In the on touch Listener I'm able to get the x,y coordinates but i don Know how to make those coordinates to map to 3d space.

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Android :: Runtime Exception ListView Whose Id Attribute Is 'droid.R.id.list' / What's Wrong?

Jun 14, 2010

I am getting a run time exception
java.lang.RuntimeException: Your content must have a ListView whose id
attribute is 'android.R.id.list'

I don't know what is wrong> code...

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Android :: Rotated Image In ImageView

May 9, 2010

I want to show an arrow that indicates the direction towards a goal, using the orientation sensor and current GPS position. Everything works well, except that I want to rotate the arrow image in my ImageView.

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Android :: Put Rotated Text On An Imageview

Nov 24, 2010

I need to put some text over an imageview.

CODE:..........

But this doesnt displays the text only the picture. And also I have to rotated this text. Is this even possible with TextView?

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Android :: Camera Preview 90 Degree Rotated

Jun 8, 2009

When camera is launched in portrait mode, the viewfinder screen is 90 degrees rotated and stretched out. I read couple of places that this is a known bug with sdk1 but i am still finding this problem with cupcake. Has anyone having any idea is this issue is fixed in cupcake or in donut? any clues how to move ahead. setOrientation and changing the preview size didn't help. Even I read somewhere Surface flinger class needs change: http://groups.google.com/group/android-framework/browse_thread/thread...

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Android :: OpenGL ES 1.1 Vs 2.0 For 2D Graphics - With Rotated Sprites

Mar 14, 2010

I am having trouble finding information related to which i should choose, OpenGL ES 1.1 or 2.0 for 2D graphics.

OpenGL ES 1.1 on Android is a bit limited to my knowledge, and based purely on sprite count the only useful renderer is draw_texture() (as far as i know). However, that does not have rotation and rotation is very important to me.

Now with the NDK adding support for OpenGL ES 2.0, i am trying to figure out if there is anything that preforms as well as draw_texture(), but can handle rotation.

Anyone have any information on if 2.0?

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Android :: Display UI Elements About 180 Degrees Rotated

Oct 5, 2010

I would like to display some UI Elements on a android xml layout file. I try to make an application, where two players can sit at each end of the mobile device, and play against each other.

So need to show some Button 180 degrees rotateted.

Is this possible? I tried android:gravity, but this did not work.

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Android :: Camera Preview Rotated And Stretched

Jun 11, 2009

I am using the code from ApiDemo Camera Preview and it runs fine on my Gphone but the preview is rotated and stretched.

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Android :: What Happens To Thread As On Destroy Is Called When Device Is Rotated

Jun 15, 2010

I would like to know as to what will happen to the thread which has been created by an activity and the device is rotated. I have observed that the onDestroy method is called when this happens. Will the thread be killed too?If the thread is not killed, how can I reassociate the thread with the activity as a new instance of the activity is created on rotation.

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Android :: Crash When Activity Starts Up And Screen Gets Rotated?

Jun 26, 2009

I am getting a crash intermittently when my Activity starts up either initially or when the screen gets rotated I get several log messages which I have been unable to get any insight from: timeout expired mFreezeDisplay=1 mFreezeCount=0 App freeze timeout expired Force clearing freeze then lots of: Lock_layer timed out (is the CPU pegged?) Key dispatching timed out then I get ANR annotation: keyDispatchingTimedOut the trace has alot of sending signal 3 to alot of PIDs

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Android :: Removing / Destroying Objects When Screen Is Rotated

Jan 25, 2010

I am finding that performance degrades after one or more screen rotations, and I presume that this is likely to be because an App's main Activity is destroyed and recreated each time the screen is rotated and that my app must be leaking memory when that happens.I have read that, contrary to what one might expect, not all the objects created by an app's main Activity (or in classes called by that Activity) are destroyed when the activity is destroyed. Specifically, I think I have read (although I can't now find where) that if the View uses a large bitmap member object then the Activity's onDestroy() method should be over-ridden and the bitmap should be explicitly recycled.Are there other objects that need to be destroyed or removed when the Activity is destroyed? What about Listeners? Is there a comprehensive tutorial or guide on this subject?

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Android :: Rotated Map View - Get The Touches Back To Where They Belong

Feb 24, 2010

I am using the MapsDemo example for a mapping application where I rotate the map in direction of travel. This works well even without the canvas smoothing in the example.

However, I haven't yet managed to adjust the dispatchTouchEvent code to counter the map rotation effect for the user touches (right now when the map is rotated 90 degrees a user's horizontal sweep will move the map vertically etc). The sample code only offers the teaser:

CODE:..........

And while I am at it - Is it still possible to position the zoom controls separately, so that they do NOT rotate when the map rotates? I read that the getZoomControls() is deprecated.

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Android :: Don't Want Activity To Be Destroyed/created When Phone Is Rotated.

Apr 18, 2010

I have tried to freeze orientation: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

But thought screen stays in portrait orientation, the activity is still recreated.

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Android :: Bitmaps Loaded From Gallery Are Rotated In ImageView

Sep 5, 2010

When I load an image frome the media gallery into a Bitmap, everything works fine, except that pictures that were shot with the camera while holding the phone vertically, are rotated so that I always get a horizontal picture even though it appears vertical in the gallery. how can I load it correctly?

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Android :: Image Resource Aren't Rotated In Landscape

Sep 30, 2010

This one surely is a simple one but I haven't made sense of is yet. I'm working on an app in opengl es on android. everything goes well except when I load the textures. I manage to open load and create all the textures without any problem, but the image displays itself rotated of 90. it looks as if the application does not consider that its is in landscape when opening the image...I solved the problem by turning all my textures of 90 degrees but I would sure like to figure this one out Because it is the only thing that is not rotated, the top bar is rotated, the touch coordinated are rotated,
the h and w of the surface are good,

Here are some code snippets that I think are relevant:

CODE:...........

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Android :: Button Click Lost On Widget When Screen Rotated

Nov 22, 2010

I have a very simple widget application which consists of a linear layout with a background and an image button. In the AppWidgetProvider on Update method, I register the click of the button to broadcast an intent. When the widget first loads, everything runs fine and the click is captured. The problem occurs when the screen is rotated, and the click is never captured again even if the screen is rotated back. What do I have to do to re-register the click when the screen rotates? below is some segments of code I am using.
AppWidgetProvider
@Override
public void on Receive(Context context, Intent intent)
{super.on Receive(context, intent);
if(intent.getAction().equals("test.CLICK"))
{Closemouthed(context);}}
@Override
public void on Update(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds)final int N = appWidgetIds.length;
// Perform this loop procedure for each App Widget that belongs to this provider for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i]; RemoteViews views=new RemoteViews(context.getPackageName(), R.layout.widget);
Intent click intent=new Intent("test.CLICK");
Pending Intent pendingIntentClick=Pending Intent.getBroadcast(context, 0, click intent, Pending Intent.FLAG_UPDATE_CURRENT);
views.setOnClickPendingIntent(R.id.change_mode, pendingIntentClick);
SetInitialLayout(context);
appWidgetManager.updateAppWidget(appWidgetId, views);}
super.on Update(context, appWidgetManager, appWidgetIds);}
Manifest
<receiver android:name=".Widget" android:label="@string/widget_name">
<intent-filter>
<action android:name="android.appwidget.action.ACTION_APPWIDGET_CONFIGURE" />
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="test.CLICK" />
</intent-filter>
<meta-data android:name="android.appwidget.provider" android:resource="@xml/widget_mode_switcher" />
</receiver

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Android :: Drawings Of View.onDraw Not Shown When Canvas Rotated

Mar 7, 2010

I have create a subclass of View and overwritten onDraw() - see some test code below. It draws a line consisting of some points. Before the line is drawn the canvas is rotated and restore after the drawing. The angle by which the canvas is rotated increases by 5 degrees every time onDraw() is called. The view is invalidated about once a second causing the view to be redrawn. Due to the rotated canvas the line drawn looks like a clock hand rotating counter-clockwise. This works - but not always. Sometimes the line is not drawn for one or more seconds, although I know from the log statement that onDraw() was called. Sometimes means: The line may be not shown after 8 seconds, then again after 35 seconds and so on. If the canvas is not rotated the problem does not occur. This also happens when I use a SurfaceView instead of a View. It does not only occur in the simulator but also on my G1 - both using Android 1.6.

CODE:.............

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Android :: Rotated Screens Compared To Accelerometer On Dell Streak

Sep 16, 2010

I have update our game to be able to handle devices with rotated screens (http://android-developers.blogspot.com/2010/09/one-screen- turn-deserves-another.html#links). I used a Motorola Flipout as a reference device and that one works great. The problem is that when the update with that fix came out I started to get reports that our game had stopped working for Dell Streak.

Do anyone know if there are special problems with screen rotation related to accelerometer output on Dell Streak?

And do anyone know what Dell Streak returns on the android.view.Display.getRotation() function call?

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Android :: Droid Widget ImageButton Loses Image When Screen Rotated / Fix It?

Apr 16, 2010

I have a widget on my home screen with several ImageButtons which have default background images. Through the configuration activity, I can change the image on any of the ImageButtons. The problem is that when the screen is rotated, the image on the ImageButton disapears and it changes back to the default image.

I don't know why this happens or how to fix it

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