Android :: How To Render Full Resolution Image With WebView?
Jun 23, 2010
I want to use a WebView to enable dynamic loading of ads in my app. I'm currently running on a HDPI device, and images width a width of 480px are clipped/scrolled. If I use images with a size of 320px, they are zoomed in and rendered at too low a resolution.The content of the loaded WebView url is a simple web page with just an image tag wrapped in a link, as well a simple head. I've tried playing with the viewport meta-tag, but without any luck.
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May 21, 2009
I am trying to display 480*320 image in fill_parent width and height but it doesn't fit on full screen. image seems a bit smaller in width.
do i need to change resolution or something else..
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Jun 26, 2010
I have a program that should work on Android 1.5, but when it's run on newer devices with higher resolution screens, it should support the full resolution and not emulate a lower resolution screen. As far as I can tell from the documentation, this should be simple.
I just specify
code:.........
The problem is that if I tell Eclipse to compile for 1.5, it refuses to accept this. It reports an error (targetSdkVersion is an unknown tag) and refuses to compile or run. If I tell it to compile for 1.6 it works fine, of course. But if I then try to install on a 1.5 AVD, the program immediately crashes with a java.lang.VerifyError. I'm clearly missing something simple. How do I get it to compile an apk that works under 1.5, but still includes the targetSdkVersion tag?
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Apr 21, 2010
I'm using a WebViewClient that overrides shouldOverrideUrlLoading so the browsing stays inside the WebView. I initially call loadDataWithBaseURL with some HTML I have in memory, which has links in it. When I click the links, they load correctly in the webView. Everything is good up till now, but when I press back, effectively calling webView.goBack(), the webView loads the failUrl I passed to loadDataWithBaseURL. Why does it work going forward, but not going backward?
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Oct 30, 2010
I know you can't take a screenshot without having root access, but is there a way to render an activity and all the contents to an image file?
anyone have code to do this? it would be nice to have any dialogs, menus, etc... as well, but not required.
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Jul 10, 2010
I have an application which is basically a surfaceview, where height/ width is set to fill_parent. I run it on a htc desire, but when I check the size of the view (or the canvas I obtain), it says 340x533, so some kind of scaling seems to be done. Also, I load a bitmap, which seems to be scaled. Do I have to do anything special to run my app in full resolution?
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May 22, 2009
I am working with big png images, 6000x6000 pixels, for example. I want to show a fragment, 320x480 pix for example, with full resolution, without scaling first the whole image. But I can't create an initial 6000x6000 bitmap because an obvious out of memory problem, and then extract a fragment. How can I do that with android API? Is it posible? or, I need an external advanced image API. or I need to write my own png decoder (I think that it should not be easy).
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Jul 5, 2010
I searched all over and cannot find something about this issue: My problem is all my photos in gallery look really low resolution until I zoom in slightly on the photo. At that point the detail snaps in. But when I just open it up it looks to be about half res. Any idea what is causing this and how to prevent it?
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Mar 31, 2012
I am trying to write a fractal drawer on my Milestone 2, it works well, but for some reason the screen resolution is 569X320 and not the full resolution of the screen.I've already added the targetSdkVersion="4" in the manifest file, but it didn't make a difference.
I'm basically creating a bitmap based on the view dimensions inside the surfaceChanged(SurfaceHolder, int, int, int) callback using the reported width and height parameters.When I print the width and height parameters received by the surfaceChanged method, those are 569x320.
For reference, the native screen resolution of the phone is 854x480.What am I missing?
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Mar 26, 2012
My current mobile phone is an LG/Sprint Optimus S, whose camera has 3.2 mpx resolution. My previous (and first) smart phone was an HTC Pure which runs Windows Mobile 6.5 and is perhaps better known as the Topaz, Pure being its AT&T edition. The camera on that phone does 5.0 mpx, so it's obviously much better. Even on just the small device screens, you can see the quality difference at a glance.
For a particular objective, I need to be able to take good pictures on the go, but have the Internet connection provided by my current Android device. In other words, I want to take pictures with the HTC, beam them to my Optimus, and then use that to send out the pictures. I was having a bit of trouble getting the devices to work well together in their native states, so I flashed a version of Froyo onto the old HTC. Having done that, I found that the Bluetooth connection between the devices worked quite well. But when I try to use one of the Android camera apps to take pictures on the HTC, it's not taking full advantage of the lens' capability. The photos show up on the screen about the size of a large postage stamp; in fact not much bigger than a thumbnail picture.
Do Android camera apps not work at any better resolution than 3.2?
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Jul 20, 2010
I'm trying to capture an image by calling camera utility from "MeidaStore.ACTION_IMAGE_CAPTURE". However, it seems there is only on resolution available 640x480, while the native camera support 8MB resolution.Any permission or extra param needed to get larger resolution option? It'd much appreciated if anyone can help on this.
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Sep 24, 2010
I am attempting to create a very graphically intensive android application. Almost all of the UI is based on bitmaps and I would like to support as many different devices as possible and to have the app look great in all of them.Is it possible to embed different resolutions for each image and have a different image displayed on each device. I am aware of stuff like hdpi folders etc. as well has units like dip etc., but that still leaves too many variables as to how the image is displayed. I would like to not have the images scaled at all to avoid losing image quality.For instance on my high resolution device I would like an image to be exactly 100px and then on a medium resolution device I would like a lower resolution image to display and be exactly 80px. If I use display independent units, I cannot ensure that the images will be of a particular size.
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Nov 24, 2010
I want to place three button images of same size equal to screen it is working fine in size 320 x 480,it occupies full 320 size but android is having different resolutions of phones of different sizes 480 x 800 and 240 x 320 how I has to place same image for all resolutions equally to occupy full screen ?
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Apr 13, 2010
As Android supports multiple devices from different manufacturers there are different screen resolutions supported.It shows WVGA and FWVGA in MDPI for Large Screens and HDPI for Normal screens. So, if the image is kept in drawable-mdpi and its resolution is 320 * 480 then which image will be taken by Large Screens device of MDPI.Moreover, there are two screen resolutions for HDPI i.e. 480 * 800 and 480 * 854. So, with what screen resolution the image should be built.
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Jun 1, 2009
Can i resize an image to a lower resolution as i am getting an OutOfMemoryException when trying to display image with 2048x1536 resolution or more?
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Nov 11, 2010
I was wondering which resolution I should convert my videos to in order to be able to view them in full screen on the X8?
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Mar 9, 2010
The Android documentation says that best practices are to make two drawable directories - one for HDPI and one for MDPI. It also says that if the MDPI directory doesn't exist and a MDPI device is running the app, it will scale down the HDPI ones so everything looks good. Is there any reason not to just make one high resolution set of graphics? One con that I can think of is performance issues and one pro I can think of is only having one set of images for your app.
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Jan 6, 2010
Works like a champ. I'm now trying to make my app work on small screen devices, so I created a res/drawable-ldpi directory, and populated it with the two pngs plus the corresponding selector file.Isn't this the right way to specify ldpi specific button images? If default device xmls and pngs go in drawable, then ldpi xmls and pngs go in drawable-ldpi, right? Could these errors be the result of an inappropriate <supports-screens> element in my manifest file? Neither the api-demos in the samples (for any SDK version), or the newer samples including multires, have any multi res image button examples. In fact, I couldn't find any example where there was an xml file in a res/drawable-.
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Mar 29, 2009
I'm trying to load an image (tried both gif and png) from my assets directory, into a webview. In my assets folder, I have an image called myImage.gif
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Jan 22, 2010
Every time I try to add a contact icon (from a saved image on my phone), my Magic saves a low-resolution version of the crop I make.
When I dial the contact, the picture looks HORRIBLE (it seems like the resolution is about 50x50px or something). I tried making contact icons from photos made with the phone or from high-res images that I transferred from my PC, but the outcome is always the same: the resolution of the icon is too small.
Is there a way to solve this problem? There's no point having a low-res image in a high-resolution image placeholder.
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Dec 10, 2009
If this is a repeat of another thread then i apologize .i need a video player that will play mp4 video in full resolution for the droid.m coming from bb.can you help me with this.i don't care if it is free or not.
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Mar 29, 2010
I'm trying to draw an image in an ImageView, but i want it to be unscaled, with scrollbars as necessary. How can I accomplish this? Right now I just have a drawable set as the android:src of the ImageView in the XML. This autoscales the image to fit the screen width.
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Jul 13, 2010
When I started to display an image from the SDCARD in WebView, I got errors like:
" Not allowed to load local resource: file://".
I�ve found a solution for this, and you don�t even have to care about ContentProviders�
Here�s an example:
/* Using WebView to display the full-screen image */
WebView full = (WebView)findViewById(R.id.webview);
/* Set up the Zoom controls */
FrameLayout mContentView = (FrameLayout) get Window().
getDecorView().findViewById(android.R.id.content);
final View zoom = this.full.getZoomControls();
mContentView.addView(zoom, ZOOM_PARAMS);
zoom.setVisibility(View.VISIBLE);
/* Create a new Html that contains the full-screen image */
String html = new String();
html = ("<html><center><img src=""+fileName+""></html>" );
/* Finally, display the content using WebView */
full.loadDataWithBaseURL("file:///sdcard/data/data/com.youproject.example "utf-8",
""); Hope you found it useful, let me know how it works for you!
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Jan 3, 2010
I used webView to show javaScript,one image was included in the javaScrip,but the webView not run the image on the contrary appear a "?"image.
My code:
CODE:..............
I put android_normal.png and android_waving.png in the assets and drawable folder
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Jun 3, 2010
My app uses a WebView widget to load ads from Google AdManager. AdManager gives you an HTML snippet, which is 90% javascript to call their server for the image to load.
I put their html snippet into a string and use String.format to add in several variables that AdManager requires.
I enable javascript on the WebView (webView.getSettings().setJavaScriptEnabled(true);)
I load the string into the WebView (webView.loadData(myString, "text/html", "UTF-8");
result: the ad never loads (although the WebViewClient shows serveral .js resources loading).
If I take that exact string and create a file and then use webView.loadUrl("file:///android_asset/test.html"), the image loads properly.
Why would loadUrl work but loadData does not?
I've verified that javascript is running. I injected a little script to write out a text string and it works.
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Jul 13, 2010
I have an image that I want to be able to display full size but when I place it in my imageview it scales. I would like it to display full size with scroll bars. Is there a way I can make my main view that the image view is in have scroll bars vertical and horizontal or how can I do this. The images are local on the SD card. I would really like to get the same effect that the webview offers if i were to look at these image from a URL.
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Sep 3, 2009
My application required to draw image on full screen. now the phone screen size will be different. So will i have to make different image for each phone or i can use just one image and it can display on full screen in any device.
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Jul 28, 2010
I have set image in AbsoluteLayout but it'll not display in full screen on G1 but when i run the same application in Nexus it is working properly.
I have set setContentView(new Test(this)) in my activity class. Test is my AbsoluteLayout class.
My code looks like...
Can anyone tell me that why i am not getting full image on G1 mobile screen?
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Sep 28, 2010
I am dynamically serving an image from my server, and attempting to display it in an img tag on an Android phone. This works perfectly in the normal Android browser, but when I try it in my app's Webview I just get a question mark. Running Android 2.1.1 on a Nexus One
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Aug 30, 2010
I'm using the following code which only zooms the loadData. How is it possible to zoom the image inside? code...
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