Android :: Drawable Resource Images - JPEG Files Supported
May 28, 2010
Can I have sub-folders to hold my drawable resources. For example can I store an image in, say, 'res/drawable/content/images/myimage.jpg' and then find that resource via a call to:
id = context.getResources().getIdentifier("com.mycompany.myprog:drawable/ content/images/myimage", null, null);
I have tried this and it doesn't seem to be working (but I may have something wrong). Is it supposed to work or do all the resources need to be in the root drawable folder? Also, are jpeg files supported and drawable resources?
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Jun 23, 2010
1.myJpegFile = new File("images/jpegImage.jpg");
2.output = new BufferedOutputStream(new FileOutputStream(myJpegFile));
3.encoder = JPEGCodec.createJPEGEncoder(output);
4.encoder.encode(myJpegImage); Please could you give me the equivalent code for line no. 3 and 4 in Android?
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Jul 23, 2009
Android does not provide an Exif Reader or Exif Writer in its SDK (it has a native implemenation, though, but that API is private).
The Sanselan library, however, does provide a full fledged set of functionality for reading and writing Exif metadata.
However, Sanselan pur sang cannot be included in an Android Project. It references classes and packages that do not exist under the current version of Android (e.g. ImageIO).
Therefore, I made a quick cut of Sanselan 0.97, cutting out all the classes that prevent it from being used on the Android platform. It is a quick cut and it may have some issues. However, I got its exif reading and writing to work for my application and it looks like its working quite well. Reading and writing raw image-data is, however, not possible in this cut. This has been cut out.
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Oct 10, 2009
I need to use some inbuild drawable I found in
http://developer.android.com/reference/android/R.drawable.html
I set drawable @drawable/ic_input_add to a button in my layout xml file. The add icon appears on the button of layout editor. But there is a error of that xml file said that
Description Resource Path Location Type ERROR Error: No resource found that matches the given name (at 'drawableLeft' with value '@drawable/ic_input_add'). spend_list.xml / AccountBook/res/layout line 5 Android AAPT Problem. How to use a inbuild drawable?
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Aug 21, 2009
I have some image names stored in a database, but the images themselves are in the /res/drawable folder of the application. I need to assign these images to some views at runtime, and I'm currently doing it this way:
// public static final String DRAWABLES_PATH = ":drawable/";
int resId = getResources().getIdentifier(packageName+DRAWABLES_PATH +imageName,null,null); mButtonX.setBackgroundResource(resId); //
Is there a more efficient way to do it? Or should I be storing the images directly in the database (they are many)?
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Dec 17, 2009
I need to create a tiled drawable using BitmapDrawable but I need to create it from xml resource rather than code.
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May 13, 2010
I would like to get a byte array from an jpeg image located in my res/drawable file?
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Feb 28, 2010
I have:
String uri = "@drawable/myresource.png";
How can I load that in ImageView? this.setImageDrawable?
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Oct 19, 2010
Does all resource (all in res folder if on eclipse IDE), specially drawable image, is loaded to memory during runtime? Or it is just like a file which is available when the application need it?
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May 2, 2010
I am trying to create a drawable in code and change the color based on some criteria. When I try and set the Drawable as the background of the ImageView it displays but won't let me set any padding. I realized I need to set the ImageView image via the setImageDrawable() function in order to be able to set the padding. The problem I am running into is that when I set it via the setImageDrawable() function nothing is displayed.
Here is what I have written:
<?xml version="1.0" encoding="utf-8"?>
ImageView icon = (ImageView) row.findViewById(R.id.icon);
ShapeDrawable mDrawable; int x = 0; int y = 0;
int width = 50; int height = 50;
float[] outerR = new float[] { 12, 12, 12, 12, 12, 12, 12, 12 };
mDrawable = new ShapeDrawable(new RoundRectShape(outerR, null, null));
mDrawable.setBounds(x, y+height, x + width, y);
switch(position){ case 0: mDrawable.getPaint().setColor(0xffff0000); //Red break;
case 1: mDrawable.getPaint().setColor(0xffff0000); //Red break;
case 2: mDrawable.getPaint().setColor(0xff00c000); //Green break;
case 3: mDrawable.getPaint().setColor(0xff00c000); //Green break;
case 4: mDrawable.getPaint().setColor(0xff0000ff); //Blue break;
case 5: mDrawable.getPaint().setColor(0xff0000ff); //Blue break;
case 6: mDrawable.getPaint().setColor(0xff696969); //Gray break;
case 7: mDrawable.getPaint().setColor(0xff696969); //Gray break;
case 8: mDrawable.getPaint().setColor(0xffffff00); //Yellow break;
case 9: mDrawable.getPaint().setColor(0xff8b4513); //Brown break;
case 10: mDrawable.getPaint().setColor(0xff8b4513); //Brown break;
case 11: mDrawable.getPaint().setColor(0xff8b4513); //Brown break;
case 12: mDrawable.getPaint().setColor(0xffa020f0); //Purple break;
case 13: mDrawable.getPaint().setColor(0xffff0000); //Red break;
case 14: mDrawable.getPaint().setColor(0xffffd700); //Gold break;
case 15: mDrawable.getPaint().setColor(0xffff6600); //Orange break;
} icon.setImageDrawable(mDrawable); icon.setPadding(5, 5, 5, 5);
This results in a space for the ImageView but no image.
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Aug 18, 2009
I tried doing a ProgressBar and I wanted to change the background and the progress bar using my own drawables from the drawable resource. Is this possible? I just don't want to spend time creating my own custom component if can be done relatively easy.
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Nov 2, 2010
I'm going to be using
setBackgroundResource(R.drawable.background)
in my onCreate() method.
When I create the XML file with the and its colors, what type of resource am I creating? "values", "layout"?
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Oct 5, 2009
Is it possible to have subfolders in the /res/drawable directory. I would like my resources to be organized in a tree view and not in a flat dir. If it is possible so how do I reference the resource from the code?
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Apr 14, 2010
I manage a project where users upload JPEG images for processing. Generally the images are taken with Nikon cameras, but recently one user took images with a Droid and the client software did not recognize the Droid JPEG images for upload. The client software developer said it's because they read images written in the standard JPEG file interchange format (JFIF), and Droid JPEGs are not in this format. Why, and can this be corrected?
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Sep 1, 2010
I have an app with locally stored .jpg files. I would like to be able to send the images (1 at a time, on user interaction) to the Gallery app's activity using an explicit intent.
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Oct 3, 2010
When i have an ImageButton and a drawable and i want to do something like the Drawer or Twitter where when i press the button and the corner of the image is highlighted over the edge, in drawer its yellow, in twitter its white. Like the one below.How do i set my drawable without using a lot of images?
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Dec 15, 2009
Android framework has variety of icons and images - accessible as R.drawable.* - that can be used by applications for common tasks. Their names give some hint about what they are, but in many cases that's not sufficient. One has to use trial-n-error to find the right icon that fits one's purpose.
My question: Is there a way where I can preview all these images in one place, so that I can quickly decide which ones to use? I have looked inside android source code, but couldn't locate the root of these drawables.
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Jul 30, 2010
I am presently using the following piece of code to load in images as drawable objects form a URL.
Drawable drawable_from_url(String url, String src_name) throws java.net.MalformedURLException, java.io.IOException { return Drawable.createFromStream(((java.io.InputStream)new java.net.URL(url).getContent()), src_name); }
This code works exactly as wanted, but there appears to be compatibility problems with it. In version 1.5, it throws a FileNotFoundException when I give it a URL. In 2.2, given the exact same URL, it works fine. The following URL is an sample input I am giving this function.
http://bks6.books.google.com/books?id=aH7BPTrwNXUC&printsec=frontcover&img=1&zoom=5&edge=curl&sig=ACfU3U2aQRnAX2o2ny2xFC1GmVn22almpg
How would I load in images in a way that is compatible across the board from a URL?
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Mar 25, 2010
I am getting an error from Eclipse when I use this xml file (res / drawable/btnswitch.xml) to designate different button conditions
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable/btn_st_rd" />
<!-- pressed --> <item android:state_focused="true"
android:drawable="@drawable/btn_st_gr" /> <!-- focused --> <item android:drawable="@drawable/btn_st_gr" /> <!-- default --> </selector>
I call it in my layout file with this code:
<Button android:id="@+id/startTimer_btn" android:src="@drawable/btnswitch"" android:layout_width="wrap_content" android:layout_height="fill_parent" />
Eclipse says it can't run the configuration because I have errors but does not show any errors. And when I remove the xml code (to go back to my original code which just sets a background image for the Button) it says that now has errors. I have to restart Eclipse to get the original code to run again.
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Jan 11, 2010
Is there an app to open files in yahoo and gmail?
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Jul 16, 2010
I was working on Android 1.5, but now moved to the latest version. So there is only "drawable" folder in Android 1.5, but now There are 3 different folder for storing images in android project. And as i have found some articles for these 3 folders that
hdpi means High-dpi
mdpi means medium-dpi
ldpi means low-dpi
But still in confusion that what is the exact purpose of these 3 folders and when to use particular folder to store images in that?
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Oct 18, 2010
I recently rebuilt my project to target 2.2 from 2.1. In the old project, I did not specify a target SDK (the manifest did not contain something like:
<uses-sdk android:minSdkVersion="8" />).
This gave me an error in the console when running, but everything worked fine so I didn't fool with it.
The new project now uses <uses-sdk android:minSdkVersion="8" /> in the manifest. But now my drawables from the /drawable-nodpi/ folder are loading with scaling, making them much smaller and significantly changing the desired visuals. If I cut out the <uses-sdk android:minSdkVersion="8" /> tag from my manifest, they load properly without scaling.
Even when loading my images like so:
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inScaled = false; Bitmap bm = BitmapFactory.decodeResource(_resources, resId, opts);
They are still scaled when I declare the minimum SDK in the manifest, but not scaled if I remove that tag. How can I load them without scaling while still declaring the minimum SDK?
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Jul 22, 2010
I try to save a unique image to each object but I get this error, how should the constructor look for it to work that way? The constructor Beer(String, int, int) is undefined
m_beer = new ArrayList<Beer>();
final Beer b1 = new Beer("Tuborg", 7, R.drawable.tuborg);
final Beer b2 = new Beer("Carlsberg", 7, R.drawable.carlsberg);
final Beer b3 = new Beer("Urquel", 9, R.drawable.urquel);
public class Beer { //Members private String name;
private int color; //1 = Very dark 10 = Very light private R.drawable icon;
//Methods public Beer(String name, int color, R.drawable icon) {
this.name = name; this.color = color; this.icon = icon;
} public String getName() { return name;
} public void setName(String name) { this.name = name;
} public int getColor() { return this.color;
} public void setColor(int color) { this.color = color;
} public R.drawable getIcon() { return icon;
} }
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Sep 28, 2010
I have some images (.png format) that I use as drawables on the surface of canvas in my android app. The problem I have is mspaint only allows a rectangular image file, so whatever I draw on the screen always shows up in a box. Is there a (free) program or way I can edit the png files so that when they are drawn on the surface of my canvas, they are drawn to shape?
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Feb 16, 2010
I have a small project in which I download images from Internet in the form of drawable and use them in Imageview for which I have provided functionality similar to an Imagebutton but without the gray edges. The question is that is there any functionality in Android (similar to IPhone) by which we can crop the drawable from edges to make them rounded edged drawable. Even if its a "not-tested-neither-recommended" method, do let me know. I would like to work on this a bit.
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May 19, 2009
Are the images in android.R.drawable considered safe for third-party developers to use?
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Apr 19, 2010
Set the image background path as package:imageName Example. At runtime , my package is com.test.android .Inside that i have an image whose path i want to mention in the XML layout file as android:src = com.test.android/img1 for an ImageButton.I saw an SDK reference for ImageView as android:src = @[+][package:]type:name.But i am not getting how to use it.I think it must not be possibe , but if there is any way , please specify.The reason why i want to do this is that,when i specify a drawable at runtime for my image buttons, i change the images according to Focus received, or onKeyup, KeyDown.. but its not working as expected.When i mention the same thing as style under drawable, it works fine. So if my theme is going to change at runtime, i want to set the drawable at runtime, keepnig the path same in the xml.
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Sep 17, 2010
Is there any way for us to store remote image in apk resource folder. I developed one application for showing list of images.user have interaction with the images. Now I done this by place image before packaging. Now I want to supply image from remote server. Which way is better and how to do?
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Aug 9, 2010
How would I edit this tutorial so that it will grab images from the SD card? code...
Alternatively is it possible to make subfolders within R.drawable?
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Jan 5, 2010
My 1.6 app works fine in both portrait and landscape modes on the default HVGA device. I'm now trying to support it on QVGA devices and am encountering build-time errors I don't understand. In my res/drawable-ldpi directory I have:
startstopin.png startstopout.png and a selector file
startstopbuttonimageselector.xml
which contains:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable-ldpi/startstopin" />
<!-- pressed --> <item android:drawable="@drawable-ldpi/startstopout" />
<!-- default --> </selector>
I've 'fixed project properties' and done a 'clean' build, to no avail. The error I get is:
Error: No resource found that matches the given name (at 'drawable' with value '@drawable-ldpi/startstopin').
Error: No resource found that matches the given name (at 'drawable' with value '@drawable-ldpi/startstopout').
I've tried adding a layout file in res/layout-small that explicitly references this selector file, but this triggers a similar build error and fails to address the original problem:
Error: No resource found that matches the given name (at 'src' with value '@drawable-ldpi/startstopbuttonimageselector').
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