Android :: Problem Using Runnable - Handler.postDelayed For Bitmap Marker Animation

Jul 26, 2010

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.

Android :: Problem using Runnable - Handler.postDelayed for bitmap marker animation

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Android :: Remove Runnable From Handler Object Added By PostDelayed?

Sep 2, 2010

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?

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Android :: Updating UI With Runnable & PostDelayed Not Working With Timer App

Sep 21, 2010

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:....................

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Android :: Handler.postDelayed Not Working When Screen Goes Off

Nov 20, 2010

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.

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Android :: UI Doesn't Update Using Stitch In_Time Example For PostDelayed And Handler

Sep 21, 2010

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Android :: Handler From A Runnable Throws Null Pointer Exception

Sep 20, 2010

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.

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Android :: Do Animation When Click On A Bitmap?

Feb 24, 2010

I have bitmap displayed on the top of the screen when the app is started up. When clicking on the bitmap, the image should move to the bottom of the screen.

I have read the AnimateDrawables from ApiDemos, but the animation is done on a Drawable Object. If it can use on bitmap, it will be great!

Here is my code...

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Android :: Storing Bitmap Images For Game Animation

Apr 3, 2009

Just starting a little game project and have a super basic question. what's the best way to store animation images for a game? I looked at the alien bloodbath code and they store multiple frames in a single png file. Is that the preferred way or is there easier/better way to do it? MP4?

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2D Canvas Bitmap Sprite Sheet Animation?

Oct 13, 2011

i want to create a basic animation with a sprite sheet. there is only one row with about 2 pics (that's the first animation).

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Android :: Alpha Animation - Staying In Last Animation Frame When Animation Is Completed

Nov 17, 2010

I'm fading out an imageview with alpha animation. I'd like the image to stay transparent after the animation. Tried with different combinations of fillAfter and fillEnabled, no luck. How can this be achieved?

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Android :: Effect Of PostDelayed() In Activity After OnPause()?

Nov 22, 2009

I 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()?

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Android :: Runnable Interface

Mar 24, 2010

I'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 () { [...] } };

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Android :: Updating UI From Runnable

Oct 3, 2009

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:...............................

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Android : Crop Bitmap Without Reading Entire Bitmap / Cannot Read Image Into Memory

Jul 21, 2010

I have a very large image and I only want to display a section the size of the display (no scaling), and the section should just be the center of the image. Because the image is very large I cannot read the entire image into memory and then crop it. This is what I have so far but it will give OutOfMemory for large images. Also I don't think inSampleSize applies because I want to crop the image, not lower the resolution.

Uri data = getIntent().getData();
Input Stream is = getContentResolver().openInputStream(data);
Bitmap bitmap = BitmapFactory.decodeStream(is, null, null);

Any help would be great?

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Android :: Create Mutable Bitmap From Camera - Draw Another Bitmap On Top - And Save It

Apr 2, 2009

I am 1) taking a picture and 2) then draw another Bitmap on top of it 3) then I store it

I am doing it as follows and it works on the emulator.

On the device I get a OutOfMemoryError: bitmap size exceeds VM budget android.graphics.Bitmap.nativeCopy(Native Method) android.graphics.Bitmap.copy(Bitmap.java:199) in the line copy the Bitmap to get a mutable Bitmap.

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

What I am asking:

a) Is there a better way to do what I am doing? 1) take a picture 2) draw another Bitmap on top of it 3) then I store it

b) What is the best way to create a mutable Bitmap from the picture I just took with the camera?

In my app, resolution is not an issue. If it works better for small photos that would be fine.

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Android :: Runnable Posted Successfully But Not Run / Fix It?

Nov 3, 2010

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)

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Android :: How To Run A Runnable Thread In Droid

Dec 17, 2009

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.

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Android :: Sending Broadcast Intent From Runnable

Jul 10, 2010

I 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.

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Android : Valid Context Inside Runnable That Will Do Insert?

Nov 6, 2009

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?

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Android :: Overlay Bitmap - Draw Over A Bitmap

Oct 8, 2009

I have two questions actually:

Is it better to draw an image on a bitmap or create a bitmap as resource and then draw it over a bitmap? Performance wise... which one is better?

If I want to draw something transparent over a bitmap, how would I go about doing it?

If I want to overlay one transparent bitmap over another, how would I do it?

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Android :: Draw A Bitmap Rotated Onto Another Bitmap

Mar 22, 2009

My goal is the draw a bitmap onto another bitmap but rotated 90 degress. whats the most efficient way to do that. My current method is as follows which is horribly bad because it creates a new bitmap every time.

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

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Android :: Animation.start - Or Animation.startNow - Does Not Start The Animation Immediately

Aug 30, 2010

I have a strange issue - from time to time the animation that should fade out my control (ImageButton) does not kick in immediately. I am using the fadeout animation to hide it and then in myListener on its end (onAnimationEnd) I put new resource as the image on the button.

Somewhere in my app code:

Animation a = AnimationUtils.loadAnimation(this,R.anim.fadeout); a.setAnimationListener(new myListener(location)); buttons[location].setAnimation(a); a.startNow(); // regardless if its start() or startnNow() it will work in most of the cases but not 100% reliable I actually can see in debug Log when its late, happens after few more clicks

Then in myListener.onAnimationEnd(Animation a):buttons[location].setImageResource(R.drawable.standard_button);

Seems there is a rule that the every 4th or 5th animation does not start ...

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Android :: Draw Shape Or Bitmap Into Another Bitmap - Java - Android

Jun 22, 2010

I want to draw a shape(many circles particularly) into a Specific Bitmap. I have never used canvas / 2D graphs etc. As i see it i create a Drawable put the bitmap in it then "canvas-it" to the shapes i want etc.

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Android :: Frame Animation Callback When Animation Is Complete

Jul 29, 2010

Is it possible in Android to get a callback when a Frame Animation (AnimationDrawable) has completed playing its frame sequence? I know when a Tween Animation has completed, it calls onAnimationEnd(), but is there something similar for frame by frame animations?

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Android :: How To Display A Bubble When Tap On Marker?

Oct 27, 2010

I was wondering how can I display a bubble (a bubble like when you use Google map and you click on a marker there is that bubble that appear with a picture ans some informations) when I tap on one of my Marker that are on my Android Google map?

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Android :: Get OnClick() Event From Marker Int Map?

May 20, 2010

i want to add a marker to a position int the map ,so i add a image through canvas by overwrite overlay .But i want to get the other activity through clicking the image,who can tell me what can i do?

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Android :: Gps Marker On Google Maps

Oct 12, 2010

I am developing an application which shows the current location of the user. I want to display a marker on the current location of the user.

I have used an image as marker to display current location. But i want to display an animated arrow showing the range just like in the google maps android app. Can anyone please tell me how to achieve this.

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Android :: Create Map View With A Marker?

Sep 1, 2009

Can any one help to create map view with a marker.

When we are clicking marker it should display info window.

By clicking that info window it shoul goto another layout.

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Android :: Displaying Information Box When Clicked On A Map Marker

Nov 15, 2009

I am looking for code examples of how to draw a description box when clicking on a map marker. Something similar to google map's implementation - http://code.google.com/apis/maps/documentation/examples/icon-custom.html (Click on the marker to see an example)