Android : How Might One Create A Large Bitmap In Droid

Aug 10, 2010

I am trying to build an Android application which can take several photos taken by the camera, and merge them into one giant image. For example, I might take three photos and arrange them in a vertical stack for output as a single image. Ideally, I'd like to be able to keep the images at the original size. Unfortunately, using Bitmap.createBitmap() causes an OutOfMemoryException before even approaching the size of one photo of camera dimensions. Is this possible? Or do I just need to resort to scaling the photos before trying to merge them into a single Bitmap?

Android : How might one create a large Bitmap in droid


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 :: Create Small Buttons With Large Text In Droid 2.2?

Sep 28, 2010

I need to create fixed size sqare buttons with relatively large characters on them for a calculator app.
When I increase text size, the character is no more displayed in the center of the button and the button's position gets shifted some pixels to the top (very strange).

http://img9.imageshack.us/i/buttontest.png/

If it's possible I don't want to use images for the buttons.code...

how do I get all buttons equallly arranged with centered text?

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Android :: Work With Large Bitmap - Rotating And Inserting To Gallery

Feb 19, 2010

I need to take a picture with the camera and, if depending on the picture size, rotate it before saving it into the gallery. I'm using

Intent imageCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
imageCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(imageCaptureIntent, IMAGE_CAPTURE);

To take the pic and save it to a temporary file. Then

Bitmap bmp = BitmapFactory.decodeFile(imagePath);
String str = android.provider.MediaStore.Images.Media.insertImage(cr, bmp, name, description);
To save it. This is the code i have tried to use to rotate the bitmap.............

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Android : Out Of MemoryError With Bitmap / Working With Large Images With No Memory

Jul 22, 2010

I'm developing an image editor for Android. When I do some operations with small pictures (600x600 - 1024x768), the program work well. But when I do some operations with big pictures, I always obtain an OutOfMemory Error. I read read many post trying to have the image in memory. Also I looked at the Android's Gallery, trying to simulate the effect of loading the image with lower quality and get the complete quality after a while. But I doesn't get to work with large images.

I thought of using the parameter inSampleSize but I raised the problem of having to perform operations on the image and save it with the original size, so it no longer serves me. The only thing I've done is use the parameter inJustDecodeBounds and display an error to the user if the image exceeds the available memory.

Is there any possibility of working with large images with no memory problems? I need urgent help.

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Android : Create Bitmap From Droid.graphics.Path?

Oct 5, 2009

I am banging my head against the wall trying to create a Bitmap from a Path object (android.graphics.Path). Is there any way to do this? I've browsed through most of the classes now but can't seem to find any way to do it.

Actually, what I have is a Path that consists of many cubic Bezier curves. It is really expensive to draw with canvas.drawPath(). So I figured that I could perhaps "cache" the Bitmap of this Path by converting the Path to a Bitmap once and then just drawing the Bitmap every time instead of calling canvas.drawPath().

Is there any way to create a Bitmap from this Path?

Or is there a smarter way to draw tha Path multiple times without having to recalculate all of the Beziers? For example, if I created a ShapeDrawable from PathShape from the Path, and just draw the ShapeDrawable objects every time, would that be more efficient than drawing the Path every time?

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Android :: Resize Large Bitmap File To Scaled Output File

Jul 26, 2010

I have a large bitmap (say 3888x2592) in a file. Now, I want to resize that bitmap to 800x533 and save it to another file.I normally would scale the bitmap by calling Bitmap.createBitmap method but it needs a source bitmap as the first argument, which I can't provide because loading the original image into a Bitmap object would of course exceed the memory (see here, for example).Is there a way to read a large image file with 10MP or more and save it to a new image file, resized to a specific new width and height, without getting an OutOfMemory exception?I also tried BitmapFactory.decodeFile(file, options) and setting the Options.outHeight and Options.outWidth values manually to 800 and 533, but it doesn't work that way.

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Android :: Create A Large Background And Moving It With Your Finger?

Feb 23, 2010

I am designing a Game and have a large background. The background it a lot bigger than the phone display so the user will only have a small "View" of the background. They will be able to move around by scrolling with their finger.

How do i go about this?

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Android : Want To Create Bitmap From BitmapDrawable?

May 26, 2009

How can i convert a BitmapDrawable into a Bitmap (hopefully it keeps the Alphachannel from the BitmapDrawable)..

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Android : Create Bitmap From Byte[]?

May 4, 2010

How do I create a Bitmap from a byte[]?

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Android : Can I Create Bitmap From An Image (.png)?

Aug 18, 2010

I have an image in .png format in "drawable" folder and need to create Bitmap from it, so can use in public void drawBitmap (Bitmap<http://developer.android.com/reference/android/graphics/Bitmap.html>bitmap, float left, float top, Paint <http://developer.android.com/reference/android/graphics/Paint.html>paint)

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Android : Need To Create A New File ( To Be Sent ) From A Bitmap

Jul 30, 2010

I have a bitmap "picPrev" which I got from my online server. I want to turn it into a file so I can send it. I was exploring this method. code...

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Motorola Droid :: How To Create Large "next" Button At Bottom Of Page?

Nov 16, 2009

Would it be possible to create a large "next" button at the bottom of the page? When using the touchscreen, it is difficult to flip to the next page of a thread...I find myself having to zoom in a lot in order to press the little > correctly. I can't keep track of how many times I get routed to Amazon for missing the button.

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Android : Way To Create Byte Array From Bitmap?

Jul 20, 2009

Is it possible to create a byte array from bitmap?How can I do so?

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Android :: Cannot Create New Map View To Draw To Off Screen Bitmap

Oct 29, 2010

I'm trying to create a MapView in a service (live wallpaper), but have it hidden so that I can render it to a Bitmap, and then map it to a texture to render in opengl. I have a Canvas and a Bitmap, and I intended to call myMap.draw(myCanvas) in order to get it into the correct bitmap so that I could then bind it as a texture.

When I Initialize I do the following:
myMap = new MapView(ctx, APPSTATICS.MAP_API_KEY);
I get an error:
java.lang.RuntimeException: stub at com.google.android.maps.MapView.<init> (Unknown Source)
Why I can't create a new mapview which I can use to draw to a offscreen bitmap?

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Android :: How To Create Bitmap Thumbnail So Speed Improves?

Nov 12, 2010

I am using MediaStore.Images.Thumbnails.getThumbnail to create bitmap of thumbnail in htc hero , it takes lots of time to execute this. I other device it works faster. Please suggest any alternative to this method to create bitmap thumbnail so speed improves.

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Android :: Alternatives To Create Scaled Bitmap When Adding 3D

Dec 4, 2009

I have a problem - I am writing an application that displays up to 12 images on screen, and moves them around, plus reads touch events. I am using a sample code I found, and it works great. Now I need adding 3D - meaning emulating the objects moving in the Z axis, too (in/out of screen). To do this, I need to resize the images as they move. To test this, I changed the following line in my onDraw (Panel) code: canvas.drawBitmap(bitmap, coords.getX(), coords.getY(), null); to: Bitmap bmpScaled = Bitmap.createScaledBitmap(bitmap, 112, 112, false); canvas.drawBitmap(bmpScaled, coords.getX(), coords.getY(), null); Which works, BUT - movement on screen, plus response to touch events becomes real Jiggly. Checking the log I see that every call to createScaledBitmap causes garbage collection of around 90mS, which causes the total app to respond jiggly. Tried preparing 20 sized bitmaps beforehand, but since that moves the calls to those createScaledBitmap to the beginning of the app - it takes forever to load. Can you think of any workaround or other way to achieve the scaling effect?

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Android : Need To Create Bitmap From Integer Array In C / OpenGL

Nov 29, 2009

I am trying to move my code from Java to C, and I have encountered a problem while trying to find a function in C that can take an array of ints and create a bitmap from it for OpenGL. In Java, I used

bitmap = Bitmap.createBitmap( {int array name} , w, h, Config.RGB_565);

Is there a similar function that I can use in C, or a workaround that I could use?

Also, if it matters, I am programming for Android.

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Android :: Large Screen On 1.6 - All XML Files Of Layouts In Layout-large Can't Load

Oct 23, 2009

I want make it support multiple screens(small,normal and large).I am 100% sure the all of layouts are working perfectly now, but large screen,the problem is that all XML files of layouts in layout-large can't load,The platform always load default XML file(these are under layout folder) at large screen environment.

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Android :: How To Create Bitmap From Image File In Android?

Mar 2, 2010

How to load an image file (on SD card) into a Bitmap on Android?

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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 :: 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 :: 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 :: Way To Deploy Large Database With Droid Application

Feb 11, 2010

I am in need to write an application for Android devices that needs to access a large (~200MB) database.
What would be the best way to do this? Can I just stick the database in the assets folder? I have read of various limitations that apply to the entire application size and to individual resources within, especially on some devices... What are exactly these limits?

Is there any way to do this apart from a post-installation download from an external server?

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Android :: Droid Shrink Large Image Size / Fix It?

Nov 24, 2010

If there is a image on my phone that I want to send up to a server thats 1mb or higher I want to take that image and shrink it to a smaller size without messing with original image in anyway. I know how to get a from the phone and I also know how to send it up to a server, I just need to know how to make the image smaller because large files higher than 1mb are giving me issues.

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Android : How To Install Large Size Apk App On Droid Phone?

May 24, 2010

I have an application which is of size 130MB. when i try to install its displaying insufficient memory error. but i have around 170MB left in available space in internal memory. How can i Install this app? The size of the app is large because it contains many media files. In Motorolla droid its getting installed. but on Nexus One its giving this error.

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Android :: Best Way To Save Large Number Of Checkboxes State In Droid?

Sep 11, 2010

I have some 34 checkboxes on one Activity which i have to mark and unmark. and I want to save the status of the each checkbox.

I want this persistently. So should i have a sqlite table or preferences ?

If sqlite table is recommended, then what should be the ideal table structure design?

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Android :: How To Break A Large Image Into 8 Equal Parts In Droid

Nov 16, 2010

I just want to break a large image into some equal parts like 4, 6 or 8.
can we do it?
actually i want to store every parts of image as a separate image in my
drawable folder for future use.

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Android :: Include Large Videos Files In Droid Applications?

Jul 2, 2010

I was wondering if the Android had any limitations that would prevent 300+ MB's worth of videos to be included in the application?

Currently, I have several iPhone apps that do this, and due to demand, I am looking at the possibility of porting them over to the Android.

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