Just want to start out by saying this seems like a great site, hope you guys can help! I'm trying to use the structure laid out in LunarLander to create a simple game in which the user can drag some bitmaps around on the screen (the actual game is more complex, but that's not important).
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I' trying to complete an assignment. I need to be able to draw circles with the canvas in Android and also draw the ten previous circles while my finger moves. I have saved the coordinates in an arraylist and tried to use a for loop to draw all of the circles. Here is my code, I'm just looking for suggestions not answers if anyone has any. I will attach my code. Right now it only draws one circle at a time.
`package edu.elon.cs.mobile;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.Paint.Style;............
I am very new to android development and have been trying to draw a square comprised of multiple smaller rectangles of different colours... Like a Mosaic essentially. Basically at the moment I am reading values from a file which assigns the colour to the smaller Rects. I am using a pair of nested for loops to try to draw the small Rects sequentially, line by line. However when the program finishes there is only one small Rect drawn which is the last one to be drawn and its colour corresponds to the first value read from the file. Here is some of my code to show you what I mean:
public SnapshotDraw(Context context) {
super(context);
for(int a = 0; a < 63; a++){
for(int b = 0; b < 63; b++){
fileName = PREFIX + "2" + EXTENSION;..............
Want to draw a line when I touch screen at two points. I can see OnTouch been invoked but after than everything breaks looks, the application crashes
I am using drawLine in Canvas.
CODE:......................
I am working on a paint application for Android. Now I want to implement an eraser to allow erasing parts of a loaded bitmap by using touch input and making the bitmap transparent along the finger's path.
A very good example of what I try to achieve is shown in the application Steamy Window for Android. Steamy Window simulates a fogged window, where a user can wipe parts of the fog via touch input.
UPDATE: I have posted the most important sections of my current code below. I am not really happy with it for the following reasons:
Drawing is quite sluggish. What can I improve here?
I am looking for a way to use an alpha mask in order to set the pixel transparency/alpha of the pixels as I want to simulate a paint brush. Any suggestions how this could be achieved?
CODE:...................
I am trying to use "setClickable(false)" + "setLongClickable(false)" + "setFocusableInTouchMode(false)" to disable Touch Event for every views but failed. When mouse clicks, OnTouchEvent() of some view will still be called. What I want is only to disable Touch event because my application need not Touch and Touch event will disturb the running of app. Is there any way to disable Touch ?
View 6 Replies View RelatedThis work flow is causing Eclipse to give me:
Unhandled event loop exception java.lang.StackOverflowError
Looking at the eclipse log it gives just a bit more information:
Unhandled event loop exception java.lang.StackOverflowError org.eclipse.ui
I am running: ....
I am writing rtsp client using MediaPlayer class , i am showing menu using onCreateOptionsMenu() which popup menu on hardware menu button. Now i want menu popup on touch screen also , i can capture touch screen event but how to popup menu on that event.
View 2 Replies View RelatedI have created ListActivity of images i want touch event just like onItemClickListner how can i do it? i'm not finding any on Item Toch Listener.
View 2 Replies View RelatedI need to make a service that capture all touch events, not in a specific view or when an specific activity is open. This service is started when the boot is completed (and I have an app to stop/play this service when I want it). So it write something (in a Toast) when the user touch any place in the screen.
Can I do this? Or only in specifics things (with OnTouchListener and adding specifics views, for example)?
How handle all input key an touch event incoming to my Android application?
Is any one place where I can catch all this events?
Actually I'm trying to implement an ontouchlistener into my android (1.5) application. therefore i implemented the "ontouchlistener" into the class, and then i put my code into the: So isn't there a way to catch the touch event before it gets to each of those views?
View 1 Replies View RelatedI have a ListView with a setOnItemClickListener. I am trying to prevent the user from pressing an item repeatedly but can't seem to get it to work. I have tried the following. Code...
View 3 Replies View RelatedI'm new to Android, I've followed the hello world tutorial through and have a basic idea of what's going on. I'm particularly interested in the touch screen of my T-Mobile Pulse so just to get me started I want to be able to write the co-ordinates of a tocuh event on the screen, so say the user touched the co-ordinate 5,2 - a textview on the screen would display that.
At present I have a simple program that just loads an xml file which contains the textview I intend to write the co-ordinates in.
Thank you in advance, I did Google for help and searched stackoverflow but everything I found either went way over my head or wasn't suitable for this.
I need your help in differentiate between touch event and drag. since I need to do action when user touch the screen and another action when it touch and drag. I wrote the code below but it only works for touch but not for drag. ret is the return value of the onTouch method. Code...
View 4 Replies View RelatedHere is my problem : I have a view containing a listView. And each row of this listview is composed of a linearLayout, itself composed of three textview and a gridView. Here is a summary of my layout for one row:
......
I want to perform an action when the user click anywere on an item of the listview. So I try these two approaches on the listview : - myActivity.getListView().setOnTouchListener(new View.OnTouchListener () {...}) - myActivity.getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() { ...}) And here is the trouble : - when I click on the textview, it nearly works : the touch listener is called, but not the clicklistener - when I click on the gridView it doesn't work....the event is just dispatched to the element of the gridView.............
I have created a list activity where i have placed some items and i am using OnListItemClick to get the desired actions through D-pad and KeyLeft and KeyRight Buttons, In Emulator TouchEvent is not working , I want to know whether it works in real Handsets? How can i enable the TOuchEvent? also Can anyone please help me out in this.
View 2 Replies View RelatedI'd like to receive a TouchEvent in my Android application any time the screen is touched. Even if my application is not in focus.Is there an general even listener or intent filter I can write to achieve this? The goal is to write system wide gesture engine. So for example, if the user swiped up and then down, a certain application would be launched regardless of where the user is.
View 2 Replies View RelatedI'm working on a simple game: when you press a button on the screen, a character will run to certain direction. It's easy to support keyboard input. But, some phone doesn't go with a keyboard or even no a track ball. So I decided to draw a virtual "run" key on the screen (with opengl). When the user press the virtual key, I apply a velocity to the character. And when the user release the key, I disable the velocity to stop the character but there seems to be some touch event noisy. If my finger cannot press still, I will see millions of touch down and touch up events, instead of a single long pressing.
And occasionally, my program captured the touch down event when I touch the screen, but didn't capture touch up event. So my character will keep moving, even no finger is on the screen. I'm wondering if there is some way to reduce the touch event noisy and tell if the user is currently pressing on the screen, instead of only getting an event when touch up and down happen. It seems the system UI can detect long pressing, for example when you put a finger on one item of the list view widget, the entire item turns to orange. I just don't know how to detect pressing in my opengl game.
I like to know using which version of Android SDK we can develop multi touch handling. Does Android SDK 1.6 support multi touch? If yes, can i get some sample code, where i can have multiple imagebuttons placed on screen and clicking on all the imagebuttons at a time should detect multiple touch events?
View 2 Replies View RelatedWe are developing an application that uses a GLSurfaceView to display 3D objects. We regularly get the "Application Not Responding" dialog. Inspection of the dumped threads reveals something that looks suspiciously like a deadlock. I have added the three thread dumps involved below. The first thread is the main application event thread, and it is waiting on a join with a GLThread.
The second thread is a brand new GLThread that is waiting for a semaphore lock presumably so it knows it has exclusive access to the graphics hardware. The third thread is probably a previous GLThread (the one the main thread is waiting for to finish), that is waiting to be notified. The strange thing is that the main application thread has just done a "mDone=true; notify();" prior to calling "wait()", so the third thread should have been awaken? .........................
Are following touch events supported by android platform or we have to implement them?
Touch event - Used to focus an item Tap - Execute action when finger is released Tap and hold - Long tap for some timeout Double tap - Tap twice without much delay Flick - Touch, hold, move and release quick Drag n drop - Touch, hold and drag Touch and move - Touch, hold, move and release in straight line
I can override onTouchEvent, but there is no x and y coordinates to set in the EditText or usual View.
View 1 Replies View RelatedHow to pass the "Touch" event to the application behind the translucent view? The view is an input view (IMF, implemented by "InputMethodService.setInputView()"). Need help.
View 4 Replies View RelatedI want to get information of how to detect device support multi touch without OnTouchListener triggers event.
View 4 Replies View RelatedI have a TextView with an OnTouchListener. What I want is the character index the user is pointing to when I get the MotionEvent. Is there any way to get to the underlying font metrics of the TextView?
View 1 Replies View RelatedAs a work around to the issue where a list item isn't focusable if it has a focusable child item (a comment by Romain Guy was that this was intended behavior, for accessibility reasons) I simply filled the listItem with two children, each of which is focusable - There's nowhere to directly touch on the listItem anymore, just it's children.
For the most part this is a useable workaround, effectively invisible to the user, except for one thing- Although you can scroll by swiping without issue, touching to *stop* the scroll no longer works- I imagine because the child item is capturing the touch event and not passing it to the parent listitem, at least while the scroll is in effect.
Is there a known workaround for this? Perhaps someway to "pass the baton" of the touch event back up to the parent listItem, or a way to change my design?
BTW- I know there's some built-in functonality for single/multiple choice listviews (checkbox listviews) - That doesn't actually help in my case. The app is a contact list, and the row children are a relativelayout (populated with contact info) and a clickable phone icon (a one-touch dial for the contact), which needs to be visible or invisible depending on whether the stored contact has a phone number.
I'm developing an Android application with OpenGL and JNI (all OpenGL stuff is in C code).
Imagine I've drawn a cube. I want that user can push his finger over the cube and can rotate the cube and move it around the screen.
Is there any way to do that?
How can assign an event listener to touch and move events only when the user touch the cube?
UPDATE I want something like this: Rotate cube with fingers.
In my android application I use this method in "draw" Overlay class for draw route on map. Can someone tell me if this method is good (in terms of performance) for route draw on map or I must to put code in Thread ??
I'm new to android.
public synchronized void draw(Canvas canvas, MapView mapView, boolean shadow) {
if (pointsAndTimes.isEmpty()) {
return;
}
Projection projection = mapView.getProjection();
Paint paint = new Paint();
paint.setARGB(250, 255, 0, 0);.............
I use onLongClick and onClick events of a button to get user inputs. Whenever; the user long click and triggers onLongClick event, the onClick event is also triggered. I couldn't find my problem. The code of two methods are shown in below: Code...
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