Android :: Bitmap Image From File Does Not Scale On High Density Device / Display It?

Sep 24, 2010

I have problem with displaying bitmap image on imageview on high density screen (480x800). When the bitmap image loaded from file on sdcard, the image does not scale to fit hdpi screen. On medium density screen it works normal (320x480).code...

Android :: Bitmap image from file does not scale on high density device / Display it?


Android : How To Support Devices With Normal Screen - High Density Or Low Density?

Nov 15, 2010

I read the official document about supporting multiple screens http://developer.android.com/guide/practices/screens_support.html

According to that document, I should just create different directories for different resolultion.

Now the question. How to support devices with normal screen and high density or low density?

I ask it because, there are two posibilities (WVGA800 (480x800) and WVGA854 (480x854)) and (WQVGA400 (240x400) and WQVGA432 (240x432)) and I don't know where to store some background images for them.

I would take drawable-normal-hdpi or drawable-normal-ldpi, but how to make difference between 480x800 and 480x854 or between 240x400 and 240x432?!

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Android : Display Bitmap Image On Another With Text

Feb 9, 2010

I want display image on another bitmap image with text.please send me the code if you are having solution.

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Android :: Imageview Scrolling To Display Full High Quality Image

Feb 17, 2010

I am working on displaying an image and placing an icon on top of it... clicking the icon will show an enlarged version of the image...

though putting the imageview holding the image in a LinearLayout scales the image to the width of the dialog, the problem is that i need to display the image in a dialog but the image is very high resolution and hence is far bigger than the width of the dialog...

I need to show the actual image with scrolling for both ways to see the whole image... But whenever i try putting the imageView in a scrollview the top of my imageview is blank... and again though image scrolls downwards the width is scaled to the width of the dialog...

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Android :: Make ImageButton Automatically Scale Based On Screen Density?

Jan 12, 2010

I have an image put on an ImageButton, which looks good on a mdpi (medium-dpi) screen. However, when the device has a hdpi (high-dpi) screen, the image is still pixel-by-pixel accurate, which look small on the device screen.How do I make such that the image (and therefore the ImageButton) scaled based on the density-independent pixels (dp or dip) instead of pixels?

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Saving Bitmap Image To Device?

Nov 26, 2013

I have a basic application that uses just squares and circles that appear when the screen is toched. I want to be able to save this created image, the design is build on a bitmap image, and displayed on the canvas so I want to be able to save that as an image to the mobile device.

code for saving this?

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Android : Get Bitmap Infomation Before Decode An Image File?

Jun 4, 2009

I want to know an image's width before decode it, so that I can set Options.inSampleSize if the image is too large. Any advice to do that?

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Android :: Application Doesn't See High Density's Images / Fix This?

Sep 3, 2010

My project contains three drawable's folders: drawable-hdpi, drawable-mdpi and drawable. I build it with android:minSdkVersion="3". When it runs on Andriod 1.6 or higher it always uses images from drawable-mdpi on high density screens.

How to fix this?

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Android :: What Is Size Of High Density WVGA854 Launcher Icon?

Feb 15, 2010

I have created the launcher icon(48x48 px) for 320x480 screen resolution and it's working fine. but while using same icon in WVGA854(480x854 px) it's displaying small compare to other default launcher icon. i want to know, what is the size of High Density WVGA854 launcher icon?

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Android :: Best Way To Scale A Bitmap In A View?

Mar 24, 2010

I have a custom view which is drawing some bitmaps on screen. I want to scale the bitmaps depending on some sensor data. Can anyone suggest to me the best way (performance wise) to scale the bitmaps.

Right now I'm creating the bitmaps in the constructor of the view but if I start to scale it in the onDraw method I believe I'll just be re-drawing the bitmaps (Which will be a memory / cpu hog).

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Android : How To Scale A Bitmap Object In Java

Apr 14, 2009

I have constructed a Bitmap object in Java. Can you please tell me how can I scale it (x, y with a different ratio) on android?

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Android :: Native Sdk Function To Scale Bitmap?

Jan 27, 2010

Is there some native android SDK function which takes bitmap and desired new bitmap dimensions and then returns scaled bitmap?

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Android : Display Image By File Name?

Feb 25, 2009

I need to display an image by specifying the file name instead of by using resource. E.g showImage("background.png") instead of showImage(R.drawable.background). Any one knows how?

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Android :: Draw And Scale A Bitmap On A Canvas Using Bicubic Interpolation

Mar 25, 2010

I 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?

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Android :: Display Image That Is Of Type File

May 8, 2010

I have an image that is currently stored in variable of type "File". File img; What is the easiest way to display this image onto the screen so I can verify it is working correct?

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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 : Preventing Scale On Bitmap Created In Execution Time For ImageView

Sep 23, 2010

I have a ImageView acting as a top banner on top of a webview. The image of this banner is created in execution time dependending on the resolution of the device. The height of the banner is always the same for each resolution. The only thing that changes is the width, which changes according to the orientation. But, since the width changes and the height doesn't, I end up having sort of 2 images with different proportion. And this is way the scale down/up won't work out for me.

Another problem is that everytime the user rotates the screen, the banner image is created again but Android seems not to update the image and thus I have a banner missing part of it.

I thought about having a real big image that will fit for both landscape and portrait orientation. But this seems not to be a good idea since Android keeps resizing the image everytime so it will fit on the space of the ImageView.

I'm running out of ideas here. Can someone suggest something?

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Will Android Be Able To Display Image If Name Of File Stored In Database?

Aug 11, 2012

Here is what I am trying to do:

- have a database that contains a word, and the name of an image file associated with that word.
- the words from the database will be displayed in a listview
- when the word is selected, a new activity will start displaying the word and the image in an image view.

Would it be best to store the terms in an array and have the list view populate from this array and then pull from the database onitemclick? Or can the list view be populated with the terms from the database?

Will android be able to display the image if the name of the file is stored in the db?

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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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PNG File Not Display In Image View When SRC Set Programmatically

Jun 8, 2012

I have a png file in my res/drawable-ldpi folder. I'm working in Eclipse with the emulator, but I've tried this on my 2.2.1 Android phone and I get the same behavior. I have an ImageView and I want to set the src programatically, based on a database call. If I just put

Code:

src="@drawable.norusdpyr"
in the Activity's XML file, the file displays fine. BUT, if I put

Code:

String imageresource = "R.drawable." + parsedData[4].toString();
chart.setImageURI(Uri.parse(imageresource));
where parsedData[4].toString() = "nor_usdpyr" I don't see anything. I've also tried

Code:
String imageresource = "android.resource://" + getPackageName() + "/R.drawable." + parsedData[4].toString();
chart.setImageURI(Uri.parse(imageresource));
and

Code:

InputStream is = getClass().getResourceAsStream("/drawable/" + parsedData[4].toString());
chart.setImageDrawable(Drawable.createFromStream(is, ""));
and

Code:

String imageresource = "R.drawable." + parsedData[4].toString();
File file = new File(imageresource);
chart.setImageDrawable(Drawable.createFromPath(file.getAbsolutePath()));
and

Code:

Context context = getApplicationContext();
int ResID = context.getResources().getIdentifier(imageresource, "drawable", "com.KnitCard.project");
chart.setImageResource(ResID);
finally,

Code:

chart.setImageURI(Uri.parse("android.resource://" + getPackageName() + "/R.drawable.nor_usdpyr"));
doesn't work.

None of these work. What am I doing wrong?

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Android :: High Density Emulator Use Drawable Mdpi Folder Instead Of Drawable Hdpi

Oct 19, 2010

I am running my application in the emulator using a high density skin (like WVGA800). However the ressources in my application are loaded from the drawable- mdpi folder instead of drawable-hdpi ... what else should I do so that android use the correct folder ?

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Android :: Rendering Scaled Bitmap With High Fps

Apr 15, 2010

I'm in the following situation: I have a large bitmap (~1280x1024) that I'd like to display on screen, scaled down in a view that fits the phone's screen (~480x320). This bitmap is frequently updated (couple of tiles per frame at 15 FPS). I first wanted to implement the rendering with a SurfaceView but figured out that all the scaling would be done in software due to limitations in the Android SDK. The second solution would be to load and render textures in an OpenGL context. Would that accelerate the resizing? If yes, isn't the cost of loading textures going to offset what I'll win on the scaling side?

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Android :: Change Tab Image Scale?

Nov 3, 2010

I have a tab layout with drawable resources as tab images.
In landscape mode everything fine. But in portrait mode images doesn't have some margin from tabs. How I can change images scale or how to set some margin to image? I don't want use fixed size, don't think that it is right way.

Here is my layout code...

Here is tab creation code...

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Android :: Scale A Drawable Or Background Image?

Sep 9, 2009

On a layout I want to scale the background image (keeping its aspect ratio) to the space allocated when the page gets created. I am using layout.setBackgroundDrawable() and am using a BitmapDrawable to setGravity for clipping and filling, but don't see any option for scaling.

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Android :: Scale A Background Image Or Drawable?

Sep 9, 2009

On a layout I want to scale the background image (keeping it's aspect ratio) to the space allocated when the page gets created. Anyone have any idea how to do this?

I am using layout.setBackgroundDrawable() and am using a BitmapDrawable to setGravity for clipping and filling, but don't see any option for scaling.

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Android :: How To Scale An Image In ImageView To Keep Aspect Ratio?

Mar 26, 2010

In android, I defined an ImageView's layoutWidth to be 'fill_parent' (which takes up the full width of the phone). My question is if the Image i put to ImageView is bigger than the layoutWidth, android will scale it, right? But what about the height? when android scale it, will it keeps the aspect ratio? What I find out is, there is some 'white space' at the top/bottom of the ImageView when android scales an image which is bigger than the ImageView. Is that true? If yes, how can I eliminate that white spaces?

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Android :: Scale A Background Image Of A TextView For Droid?

Aug 13, 2010

I'm battling with extending a TextView for my Android app. I'd like to create "bubbles" to display text messages in a conversation, similar to the native iPhone SMS conversations.

Is there a way to implement the resizing of a background image without just stretching it? I'd like to have a single background image that keeps it's corners but get stretched only in defined areas. I think this should be possible because I've seen it in a SMS app, but I wonder how to implement that.

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Android :: Unable To Scale Down Image For Better Quality On Droid / Way To Do

Oct 19, 2010

Now I'm using the follow code to scale down the image downloaded from internet at runtime. But the result is not good enough.

Bitmap.createScaledBitmap(srcBitmap, dstWidth, dstHeight, true);

Any help?

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Android :: Scale Image To Maximum Size In Dialog-style Activity

Nov 24, 2010

I have an activity which uses android:theme="@android:style/Theme.Dialog". The activity contains an ImageView which can show images of different dimensions. The ImageView should scale the Image so that it entirely fits into the window, at least on axes fits entirely and maintains the original aspect ratio. The size of the dialog should only be as large as the ImageView (plus its border width).

I tried the following but the dialog window always uses the whole available space:

code:............................

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Android : Takes Drawable Object - Scale Image - Save Memory?

Aug 23, 2010

I need to know how he takes drawable object. I'm collecting some ImageView objects in array, they have background images that are rather big in resolution so they take lot of memory...

I have read somewhere that it will automatically create image with resolution that my imageView have, so i think it will take less memory than first one. Please tell me, if i set scaleType property, will it scale that image? Will that help me to save memory?

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