I keep getting a FileNotFound Exception, and quite frankly, it makes no sense. Here are my files:
custom.xml
<item android:drawable="#drawable/easymode"></item>
main.xml
<Button android:id="#+id/guess"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="20dp"
android:layout_marginBottom="20dp"
android:onClick="myClickHandler"
android:background="#drawable/custom"></Button>
I've tried moving the background tag above the others to see if that was causing it to fail, it didn't work. I've moved the custom.xml file into a drawable folder, and into the ldpi and mdpi folders but it keeps giving me the same error. Why can't it find my custom.xml when it's quite clearly there? R.java also lists it, so I know it's generated the link to it successfully... Help!
Have you tried building the R file again after saving? It can be a little confusing when working with the Android SDK in Eclipse (i'm guessing you are using Eclipse). After adding your new layout xml, are the ids for buttons and strings correctly parsed and identified in your code?
I would do a save all and then compile the project and then run it and see if this sorts your problem out.
The order of the tags makes no difference here as the layout xmls are compiled into a compact resource.
If it still cannot find the xml I suggest deleting the xml, restart Eclipse and create it again under layout, add your code above to the xml, save, compile and run and see if that sorts it out.
Related
I was trying to use an icon from this page in my layout as follows
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_backspace_black_24dp"
/>
but it could not be rendered because of an error
Color value '#drawable/ic_backspace_black_24dp' must start with #
I found two related issues in SO here and here which did not help resolve the issue.
There is no dash ('-') in the filename, the file-format is a 'png' and there is no res/color directory in my project.
All my colors defined in colors.xml start with a #.
So how to fix this error?
Simply rename your file name by removing the numbers and only keep lower case letters or underscores.
Problem solved: I forgot to remember that the android sources on the internet are really outdated, and almost none of the documentation works as-is!
The folder res/drawable as suggested in the android developer guide is deprecated! The folder is now named mipmap! So the simple solution is to have the following layout to fix the problem:
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#mipmap/ic_backspace_black_24dp"
/>
Never trust the android developer documentation ... !
Try removing the '_" underscores and make the name shorter. Not sure why but that worked for me.
Check the file drawable/ic_backspace_black_24dp.
If you downloaded the SVG version you will able to open as a text file. Check if the android:fillColor has the #.
Anyway if you are using Android Studio those icons can be downloaded very easily using Vector Asset Studio:
Right click in drawable
new
vector assets
choose the icon you want
You have more info of this feature here.
I am getting a ClassCastException in android studio while running my project. Can anyone tell me what is causing this error.
ClassCastException: com.intellij.psi.impl.source.PsiPlainTextFileImpl cannot be cast to com.intellij.psi.xml.XmlFile
Thanks.
Sovled this atlast. This Question helped me. Android Studio ClassCastException When Attempting to Open A Layout XML File . I had a 11MB xml file in values. That was the problem. After deleting that, the problem was solved.
And if you want to use a large XML file add the below code in idea.properties and vmoptions in the bin folder of Android Studio.
**Add in idea.properties**
#------------------------------------------------------------- --------
# Maximum file size (kilobytes) IDE should provide code assistance for.
# The larger file is the slower its. editor works and higher overall system memory requirements are
# if code assistance is enabled. Remove this property or set to very. large number if you need
# code assistance for any files available regardless their size.
#---------------------------------------------------------------------
idea.max.intellisense.filesize=999999
**Add in vmoptions**
-Didea.max.intellisense.filesize=999999 # <--- new line
Reference: https://stackoverflow.com/questions/23057988/file-size-exceeds-configured-limit-2560000-code-insightfeatures-not-availabl
It would be better if you can share some code snippets...
Anyways, as far as ClassCastException is concerned, it means you are declaring a variable of some type and assigning it to another type you have defined in a layout xml file...
for example, in the xml you may have had:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:layout_height="wrap_content"
android:id="#+id/btn1"
android:layout_width="wrap_content">
</Button>
</LinearLayout>
but while connecting the component to code:
ImageView img1 = (ImageView)context.findViewById(R.id.btn1);
This will fire a ClassCastException because you are casting a Button to an ImageView variable which is as you understand not possible!
If this doesn't solve your problem then it would be better if you post some code snippets after figuring out which code snippet causes the error!
I Imported one image inside the drawable-mdpi, then implemented the image from button, but an error occurs no resource found here. How do I fix this issue?
I tried this:
main.xml
<Button
android:id="#+id/imageButtonSelector"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable-mdpi/button_focused_orange"/>
All drawables are compiled under a single resource name, i.e. drawable. Android automatically chooses from which folder to take the drawable depending on the screen size, and hence you do not need to specifically point it out. Also, hard coding Android to use resources from a particular folder kind of defeats the purpose of having multiple folders for Android to choose from. To solve this issue, simply change:
android:background="#drawable-mdbi/button_focused_orange"/>
To
android:background="#drawable/button_focused_orange"/>
Should be #drawable/button_focused_orange
Not #drawable-mdpi/button_focused_orange
Try to clean and rebuild your project.
If you are usuing Eclipse you can do this by clicking project -> clean and then project -> Build project
You don't have to mention -mdpi to add background images, simply use drawable only. Here is you revised code. Try this.
<Button
android:id="#+id/imageButtonSelector"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/button_focused_orange"/>
I've been having this problem for a while:
Here is my header.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="vertical">
<ImageView android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="#drawable/logo_text"/>
</LinearLayout>
And this what the Eclipse/Android XML viewer is giving me:
Unable to resolve drawable "C:\Users\Me\MyApp\res\drawable-hdpi\logo_text.png" in attribute "src"
This happens in other projects as well for seemingly random images. Project->Clean doesn't help either. I know this has to be an issue with my machine or eclipse installation because it doesn't happen on my work machine, only my home laptop.
There are no problems when the app is installed, but it would be nice to be able to see layout changes without having to install the app over and over again.
EDIT
I also get these messages anytime I use a custom View in a layout file:
error!
UnsupportedClassVersionError: Bad version number in .class file
Unable to resolve drawable "C:\Users\Me\MyApp\res\drawable-hdpi\logo_text.png" in attribute "src"
Exception details are logged in Window > Show View > Error Log
I sometimes have weird issues like this when importing new images into my project. Do you have any other res-image directories with different versions of this file? You may try removing the png and re-adding to the project.
The error message explicitly mentions the -hdpi version of the drawable directory. Have you got that image in all of the different versions of the drawable directory? Perhaps it is in res/drawable-ldpi or res/drawable-mdpi but not res/drawable-hdpi?
If you don't already have one, you could create a plain res/drawable folder and add the image there, then one would expect the system to fall back to that whenever it didn't find a definition-specific version.
Actually try to put an id tag on ImageView : android:id=:"#+id/imageView".Tell me if it is working or not.
i'm dealing with resources issue for a while and i cannot figure it out. The thing is that my resources(shapes, gradients, layouts) don't load up in application like they should. For instance:
My "layout.xml" file (main layout for activity)
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/favourite_rest"
android:orientation="vertical"
android:layout_width="fill_parent"
android:background="#drawable/activ_favourite_bck"
android:layout_height="wrap_content"
android:layout_weight="1">
...
And layout for background: "activ_favourite_bck.xml"
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#55555555"
android:centerColor="#77777777"
android:centerY="0.5"
android:endColor="#55555555"
android:angle="270" />
</shape>
In this case when i run my application, brackground is pure black like no background is set, but when i rename the file with background definition from activ_favourite_bck.xml to "halabala.xml" ( with changing reference in main layout android:background="#drawable/halabala") the background is there and everything is working fine. I want to name my resources with purpuse so later when i have more of them there is no mess. I know there is naming convention that resource filename can contain only small characters with "_" and that's what i'm fallowing.
Note: the file is recognized by IDE, there are no errors during building and i can reference file from code.
I'm woring with android 1.6 api, but i tried changing to 2.0, 2.2.. with no success. I also tried various phone types and emulator and i tried changing IDE from eclipse to IDEA and nothing helps. I tried rebuilding project, refreshing everything that can be refreshed:) i tried to wipe the application from devices with no effect. Is anybody facing similar issue like me?
Btw. the same thing is going on when i put some picture(png) in drawable folder and i'm referencing it from xml. Some pictures are recognized (and shown in running application) and some not( they are recognized only after renaming to sometning else).
Try adding an arbitrary image called a.png or some such (so it sorts alpha above your real drawable) ...
After couple of hours i worked this out. I probaly accidentally removed folder drawable-mdpi. After creating it and copying images there everything works just fine.