Android :: Detect When User Presses On A Bitmap Which Is Inside Canvas?
Mar 15, 2010Does anyone how I go about detecting when a user presses on a bitmap which is inside a canvas?
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Android :: Detect When User Drag Finger From Any Place In Screen To Inside Of ImageView?
Nov 18, 2010I've an ImageView in a LinearLayout, how can I detect when user drag his finger from any place in the screen to inside of ImageView?
View 1 Replies View RelatedAndroid :: Reset Canvas - Draw A New Bitmap Into The Canvas
Jul 7, 2010My loadMap() method generate a canvas.throwIfRecycled exception when i try to load a new map.
When i start the game, the initial map loads and work fine though,
its only when i try to load a new map that i get the exception ..
How can i "reset" canvas and the bitmap i use to draw into, so i can startover fresh with them ?
here's what i use to create and draw my maps:
CODE:.........
So basicaly once i created and used picDest and canvas, i cannot figure how to reset it all for when i want to load a new map..
Android :: Button Inside List Item - How To Process Long Presses?
Jul 20, 2010I got a ListView item that contains a button inside. Currently the long press of a ListView item does not get processed. I thought that by setting the Button.setLongClickable(false) would allow the long press to be passed along to the ListView item and it's not happening.
View 5 Replies View RelatedAndroid :: How Do I Return To Calling Activity If User Presses Back?
Aug 4, 2010My MAIN activity is spawning a child activity that contains a ListView. While this ListView is being populated (through an AsyncTask), an indeterminate progress bar is shown.However, assuming that I am an impatient user and I press the BACK button, the progress bar is cancelled but I am left with a blank screen. I have to press BACK one more time to go back to the MAIN activity.I would like the app to go back directly to the MAIN activity by pressing BACK only once. Can somebody point me in the right direction? I am thinking I should call finish() somewhere but I don't know where to put it.
View 3 Replies View RelatedAndroid :: Application Crashes When User Presses Back Button / Where To Put Code?
Oct 6, 2010First of all, maybe i went about this the wrong way in the first place. Situation is, i have a listview that when an item is clicked, it creates an intent and calls startActivityForResult() to another activity, to be able to edit the entries in the row. and that other activity after editing the required values, returns back to the calling activity, when the user clicks on a save button. The activity then uses the row Id to update the item.My problem now is that, if the user presses the BACK button instead, the application crashes. i have been looking around and see solutions like using Shared Preferences or onSavedInstanceState(), but i don't know where exactly i should be putting the code?
View 1 Replies View RelatedAndroid : Make An Activity Destory When User Presses 'Back Button?
Sep 27, 2009When I currently have my activity on the font of the screen, how can I make Android to 'destory' my activity when user clicks 'back' button? (i.e. onDestory of my Activity gets called)?
View 4 Replies View RelatedAndroid : How To Blur A Canvas / Bitmap?
Feb 6, 2010Can anyone point me to an example of how to blur a Canvas or Bitmap?
View 2 Replies View RelatedAndroid :: RuntimeException: Canvas: Trying To Use A Recycled Bitmap ..
Aug 22, 2009I am getting the following logs when i am changing the wallpaper for Homescreen. Even i am recycling the bitmap is done when the wallpaper changes in OnWallpaperChanged(). Still i m getting the bellow error.
CODE:.........................
Android :: Difference Between View's And Bitmap's Canvas?
Mar 6, 2009Can anyone explain me the difference between View's Canvas and Bitmaps Canvas
View 2 Replies View RelatedAndroid :: How To Obtain The Current Bitmap Of A Canvas
Nov 16, 2010I want to get the current bitmap associated with my canvas so I can perform operations on it. I can't see how to do this though.
I've seen some examples where you create a bitmap and set the canvas to use this bitmap, so obviously you can then access it later, but I'm using the canvas returned from a SurfaceHolder so there's no constructor.
For instance, examples often show this kind of thing:
CODE:...........
So at this point I can see bmp.
In my case, the canvas is obtained by:
CODE:......
So how can I get the bitmap for c?
In short, my aim is to capture the current canvas contents where I have drawn "stuff", and make a copy of it, reversed, to put underneath. Like a reflection. The example of this that I found performed it all via bitmaps, so I assumed I needed to somehow capture the current canvas to a bitmap to then use it.
Android :: Invert A Bitmap When Using Canvas.DrawBitmap?
May 14, 2010I am starting to develop a game. Right now I got a sprite animation going when a player moves across using sprite sheet. In my sprite sheet the character is always facing the same way, left. Now if I want the character to move right, I want it to be facing right. So is there a quick way in android to invert the bitmap after it has been loaded in? Or do I have to create sprite sheet for character facing right?
View 2 Replies View RelatedAndroid :: Animating A Drawable On A Canvas Inside A Surfaceview
Sep 2, 2010Is there a way to animate drawables on a canvas using the android built-in animation classes?
Ive been modeling my test application, a game, after the example apps lunarlander and jetboy. They contain a lot of reusable code, but they manually update the drawable objects in real time. It seems like using the android animation built ins would be so much easier since they provide the type of animation I need¦a simple linear movement.
Is there a way to do this, or am I better off updating my canvas in real time much like the example apps.
If there is a way, could anyone get me started with some sample code? I am currently inheriting SurfaceView in my class.
Android :: Draw And Scale A Bitmap On A Canvas Using Bicubic Interpolation
Mar 25, 2010I want to draw a bitmap on a canvas with bigger size than it is. I can use canvas.drawBitmap(bitmap, null, destRect, null); but that gives a poor quality, as the result is pixelated, if the source image is sightly smaller than the destination rectangle. How can i draw my bitmap using bilinear or bicubic resampling?
View 1 Replies View RelatedAndroid :: How To Use Multiple Views Inside A Single Activity With A Canvas?
Nov 7, 2010Basically what I am trying to accomplish is I want a canvas I can pass bitmaps to, to be displayed on the screen with the rest of my view objects (buttons, textviews, etc).
View 1 Replies View Related2D Canvas Bitmap Sprite Sheet Animation?
Oct 13, 2011i want to create a basic animation with a sprite sheet. there is only one row with about 2 pics (that's the first animation).
View 3 Replies View RelatedGeneral :: How To Reflect Horizontally On Canvas Image Bitmap
Sep 10, 2013At canvas there are many methods (canvas.rotate (35); canvas.drawBitmap (myBitmap, x, y, null); and many other things), but the method of mirror reflexion of image is absent (or I have not found it). At Bitmap too not that is not. Is it possible to reflect horizontally on canvas the image given Bitmap?
View 1 Replies View RelatedAndroid : Detect Scroll Position Inside A ListView?
Oct 10, 2009I'm building a chat room application where new events are being polled for every X seconds. Every time that happens, this code updates the RoomAdapter (a custom subclass of ArrayAdapter) with the new data and scrolls it to the bottom:
RoomAdapter adapter = (RoomAdapter) getListAdapter();
for (int i=0; i<newEvents.size(); i++)
adapter.add(newEvents.get(i));
getListView().setSelection(events.size()-1);
This is fine, except that if the user is scrolling up to glance at the room's history, it's going to jump her down to the bottom when the poll happens. What I'd like to do is have it so that if the user is already at the bottom of the list, it stays there after a poll for new events. If the user's intentionally scrolled upwards, I'd like the user not to be disturbed.
How do I detect when I'm already scrolled to the bottom of a ListView?
Note: I can't do getListView().getSelectedItemPosition(), because as the docs note, calling setSelection when in touch mode does not actually select the item, just scrolls to it.
Android :: Detect If User Started App Again?
Jan 19, 2009I want a countdowntimer to halt on a menu and also when the user goes from that menu to another activity. When the user comes back from that activity or when the menu is closed, the timer should still halt. However when the user went to the home screen and clicks on the icon again, I want the timer to restart. So my question is, is there a way to detect if the user has just opened your application, or if the user comes back from another activity or menu?
View 4 Replies View RelatedAndroid :: How To Detect When User Switches Tasks?
Aug 5, 2010Say that TaskA is currently in the foreground and my ActivityA is somewhere within its stack. Is there a way for ActivityA to get notified or detect when the user switches from TaskA to TaskB? As a use scenario, when the user launches my app, my ActivityA will always be the root Activity of the newly created Task. ActivityA will make use of Activities from other Apps, which will be pushed on the same Task. I would like to get notified when the user has switched to another application. In this case, onStop() in MyActivityA does not suffice as that will also get invoked if the user navigates to another screen within my app.
View 5 Replies View RelatedAndroid :: How To Detect User Inactivity In Phone?
Nov 17, 2010I want this same behavior even when the app is in the foreground but user doesn't interact with the app for a long-time say 6-7 mins... Assume the screen is ON all the time... I want to detect kind of USER INACTIVITY (No interaction with app even though the app is in the foreground) and kick start my count down timer.
View 4 Replies View RelatedAndroid :: Detect If User Using Application First Time?
Sep 21, 2010I would like to know if the user is using the application for the first time. I am using SharedPreferences, but I am not sure if I have the right logic. How can I set my isFirstLaunched boolean to true when the user first launches, and then immediately set to false after work has been done?
protected void onStart() {
super.onStart();
if(isFirstLaunch()){
populateDefaultQuotes();
//Save the preferences, isFirstLaunch will now be false
SharedPreferences settings = getSharedPreferences(Constants.PREFS_NAME, 0);....................
Android :: Detect User Idle Time
Jul 21, 2010I would like to know if android has some kind of 'idle time broadcast message'. So for example if the user is currently using one activity of my application but haven't touched the screen or used any keyboard (and doesn't have the autolock at phone level or any screensaver) for a while, I would like to be informed (let's say after 60 seconds). I would like to avoid doing it manually (by tracking each user click, touch, activity changes...)
View 2 Replies View RelatedAndroid :: Detect If User Discarded Message
Nov 20, 2010I'm writing an application and I have a feedback screen. When the user presses submit button, it takes him to the default email client and prefills the email address, subject etc. ("mailto:") When the user presses Send, my application appears and I thank the user for giving feedback. However, how can I tell if the user has pressed the Discard button and did not send the email?
View 1 Replies View RelatedAndroid :: Detect When User Taps On View?
Jan 10, 2010I want to detect when a user taps anywhere in a view in my Android application. My code looks like this:
linearLayout = (LinearLayout) findViewById(R.id.linearLayout); // main layout
// ...
linearLayout.setOnTouchListener(this);
// ...
public boolean onTouch(View v, MotionEvent event) {
Toast.makeText(this, "Touch!", 1000);
if (event.getAction() == MotionEvent.ACTION_DOWN) {
Toast.makeText(this, "Down!", 1000);
return true;
}
return false;
}
but when I click on the view, I don't get Toast! Do touch events work in the emulator -- or have I got something wrong in my code?
Android :: Accelerometer Detect User State
Oct 27, 2010I'm currently working on a project which requires the detection of user state (walking, running, driving), I've looked through some of the existing solutions on Android platform such as pedometer or calculating velocity with given acceleration, but I'm still unsure how I can approach this problem. Is there a way to accomplish this without much of data mining/signal processing? How can I solve this with simple logic? Or is this better solved with gps instead of accelerometer? The program will only need to return simple user-state descriptions like walking.
View 1 Replies View RelatedAndroid :: How To Detect User Has Screen Unlock Pattern?
Feb 15, 2010Is there a way, some API one can call to detect if the user has set a screen unlock pattern or not?
View 2 Replies View RelatedAndroid :: Detect User Pressing Home Key In Activity
Feb 5, 2010Can you please tell me how can my activity detect user pressing HOME key?
View 2 Replies View RelatedAndroid :: How To Detect User Has 3G / Wifi On Before Making URL Connection?
Sep 9, 2010I don't want my app to crash if the user doesn't have wifi or 3g connectivity. How can I catch this at runtime in my app?
View 1 Replies View RelatedAndroid :: Detect If Activity Front Most And Visible To User?
Jun 28, 2010I would like to launch an intent when any of my activity is visible, otherwise I will put it up as a notification, and will be fired by the user. To decide this, I need to know if any of my activity is front-most, how do I that?
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