In my android app, I have a string
<string name="action_upload">Upload Image</string>
in the strings file. Then in a menu file I have
navigation_screen.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context="android.arin.NavigationScreen" >
<item
android:id="#+id/action_upload"
android:orderInCategory="100"
android:showAsAction="never"
android:title="#string/action_upload"/>
<item
android:id="#+id/action_forward"
android:icon="#drawable/ic_action_forward"
android:title="#string/action_forward"
android:showAsAction="ifRoom" />
</menu>
However when I try to run it, I get an error saying:
[2014-06-19 17:26:18 - ARIN] W/ResourceType( 9060): ResXMLTree_node size 0 is smaller than header size 0x100.
[2014-06-19 17:20:26 - ARIN] C:\Users\NAME\Documents\NAME\NAME\ARIN\res\menu\navigation_screen.xml:5: error: Error: No resource found that matches the given name (at 'title' with value '#string/action_upload').
I even tried a Project clean in eclipse, but still problem persists.
Does anyone know how to fix it?
Thanks
This may seem like a weird answer, but did you save the xml file. Hit Ctrl-S and try it again.
If that doesn't work: Are the other strings you declared in the strings.xml file visible?
I'm trying to populate a spinner with a dropdown of real numbers. The contents are defined in Java, but in my spinners.xml, the "double-array" is being rejected. Do I have to convert to String to use spinners?
<string-array name="semester_spinner">
<item>Spring</item>
<item>Summer</item>
<item>Fall</item>
<item>Winter</item>
</string-array>
<double-array name="cred_spinner" />
No, Android has no support for a "double-array." It would be nice, considering they already have a string-array and an integer-array.
Are you sure that they need to be double, or could you use Android's built-in Integer-Array? If that is not possible, perhaps you could consider using a Typed-Array.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<array name="cred_spinner">
<item>2.0</item>
<item>3.0</item>
<item>4.0</item>
...
</array>
</resources>
Is there easy way to manipulate colors in android ?
In dot.net we have color palette to change the color of
objects(button-background,text-color.. etc)
similarly is there any color palette/or/-any-plugins in object
browser of eclipse IDE at design time
Note:: I am aware of changing the color by adding color codes in styles.xml and referencing it in layout.xml
You can do this in some cases directly,
e.g in TextView you can change the Text Color by applying this statement in
Java code
textView1.setTextColor(Color.Red);
for other objects like buttons etc. you can not change their Color Directly like C#.
You have to create different .xml file and then you will store this .xml file inb drawable folder, in your activity_main(where button is created in your layout file) you have to make reference
e.g
<Button
android:background="#drawable/red_button" />
now the colored button .xml file located in
res/drawable/red_button.xml
<?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/red_button_pressed" />
<item android:state_focused="true" android:drawable="#drawable/red_button_focus" />
<item android:drawable="#drawable/red_button_rest" />
</selector>
Check this Link for more Details
I'm getting an error about a string array (located in strings.xml) not being able to be resolved.
I've done everything the internet says:
Restarted Eclipse
Deleted my R.java file inside the gen folder
My values folder is still inside the res folder, not moved
None of my XML files have erros
Ran Project -> Clean
I don't have android.R imported in my class.
Checked the R.java class, it indeed doesn't have an app_categories property (my array's name)
The relevant part of the XML:
<string-array name="app_categories">
<item >Cat 1</item>
<item >Cat 2</item>
<item >Cat 3</item>
<item >Cat 4</item>
<item >Cat 5</item>
<item >Cat 6</item>
<item >Cat 7</item>
<item >Cat 8</item>
<item >Cat 9</item>
</string-array>
The Java code:
String[] categoryNames = getResources().getStringArray(R.string.app_categories);
All my other strings are visible. I have another array defined just like this one, and that one isn't visible either.
Exact error below:
app_categories cannot be resolved or is not a field [class_name].java [path] line 45 Java Problem
Just try out this way :
getResources().getString(R.array.app_categories_list);
Instead of R.string use R.array you will get your arraylist.
Don't put your string arrays in strings.xml You must create a new file called arrays.xml and place them there.
And when calling you need R.arrays.myarray, not R.strings.MyArray
After cleaning your project try restarting the adb server by running adb kill-server and adb start-server from the command line
a solution may be to create the R manually:
just hover over the error in the activity file where the problem was and then manually create it, which will cause R to generate the string array you created in strings.xml
i need to set the defult value for a ListPreference when the Activity starts.
I've tried with ListPreference.setDefaultvalue("value"); but it makes the firts Entry of the List as default. I need it because i must check a condition and set as default the value which satisfies that condition, so I think it can't be done from the xml file (with android:defaultValue)
For example, suppose I have this array of values in the arrays.xml:
<string-array name="opts">
<item>red</item>
<item>green</item>
<item>blue</item>
</string-array>
<string-array name="opts_values">
<item>1</item>
<item>2</item>
<item>3</item>
</string-array>
In the PreferenceScreen xml:
<ListPreference
android:title="Colour select"
android:summary="Select your favourite"
android:key="colour"
android:entries="#array/opts"
android:entryValues="#array/opts_values" />
In the Activity I'd like to do something like this:
String mycolour;
if (something) {
mycolour="1";
} else {
mycolour="2";
}
ListPreference colour = (ListPreference) findPreference ("colour");
colour.setDefaultValue(mycolour);
But it doesn't work, because it makes the first choice as default. Could you explain me how to make another one as default? Thanks.
You don't need to programmatically handle the default value of ListPreferences. You can do this in xml setting file. Below is an example
<string-array name="opts">
<item>red</item>
<item>green</item>
<item>blue</item>
</string-array>
<string-array name="opts_values">
<item>1</item>
<item>2</item>
<item>3</item>
</string-array>
...
<ListPreference
android:title="Colour select"
android:summary="Select your favourite"
android:key="colour"
android:entries="#array/opts"
android:entryValues="#array/opts_values"
android:defaultValue="2" />
here I selected 2 as a default value. Remember defaultvalue will be opts_values element.
Have you tried:
setValueIndex(int index);
Sorry my bad English.
List item
Retrieve the list Check if the value is null. If it is null set to the default value.
Code:
ListPreference dataPref = (ListPreference) findPreference("keyList");
if(dataPref.getValue() == null){
dataPref.setValueIndex(0); //set to index of your deafult value
}
You can set your default value by using the key like this
<string-array name="syncFrequency">
<item name="1">Block All Calls</item>
<item name="2">Block Black List</item>
<item name="3">Block Unknown Calls</item>
<item name="4">Allow White List</item>
<item name="5">Receive All Calls</item>
</string-array>
<string-array name="syncFrequencyValues">
<item name="1">Block_All_Calls</item>
<item name="2">Block_Black_List</item>
<item name="3">Block_Unknown_Calls</item>
<item name="4">Allow_White_List</item>
<item name="5">Receive_All_Calls</item>
</string-array>
<ListPreference
android:key="prefSyncFrequency"
android:entries="#array/syncFrequency"
android:summary="%s"
android:defaultValue="Block_Black_List"
android:entryValues="#array/syncFrequencyValues"
android:title="#string/call_block_options" />
or you can also try colour.setValue(mycolour);
Just for the record if someone else has this problem:
setValueIndex(int X) is setting the value # index X to the default value - so it is probably what you are looking for.
Set this value AFTER you added the Values! (stupid mistake but took me half an hour)
Actually it's because the SharedPreferences will persist after you re-build the app.
Uninstall it and try again.
((ListPreference) findPreference("pref_language")).setValue(Locale
.getDefault().getLanguage());
setValue() is ListPreference's method, and setDefaultvalue is Preference's method
This is an old post, but here's another way to set the default value for ListPreference with the following line of code:
PreferenceManager.setDefaultValues(getActivity(), R.xml.preferences, false);
Use the xml attribute android:defaultValue="<VALUE>" in your list tag to set the default value.
Note: the <VALUE> is the actual value and not the index of string
array.
If still its not working, try below steps.
Clear application data.
Uninstall and reinstall the app
Check the list preference, you will see the default value selected
Strange, I know but it worked in my case.
If you are using Android Jetpack Preference, known as androidx.preference:preference-ktx:1.1.1 in Kotlin, you can use:
app:defaultValue="<Value_in_string-array_with_values>".
Additionally: defaultValue is not an index number, is the actual value from the values array.
I also recommend using a string resource for the default value and clearing the data, uninstalling the app, or removing the file:
<package_name_in_app_manifest>_preferences.xml in data/data/shared_prefs/<package_name_in_app_manifest>. Replace <package_name_in_app_manifest> with real name like com.example.yourapp.
I was having the same issue and the defaultValue wasn't updating because it already had a wrong default value of "true". Solved it by using the Android Studio File Explorer and deleting the file.
And here is my solution example:
res/xml/root_preferences.xml
<ListPreference
app:key="mic"
app:title="#string/select_mic_title"
app:useSimpleSummaryProvider="true"
app:entries="#array/mic_entries"
app:entryValues="#array/mic_values"
app:defaultValue="#string/default_mic"
/>
res/values/arrays
<!-- Mic Preference -->
<string-array name="mic_entries">
<item>#string/default_mic</item>
<item>Headband</item>
</string-array>
<string-array name="mic_values">
<item>#string/default_mic</item>
<item>Headband</item>
</string-array>
res/strings.xml
<string name="default_mic">Integrated</string>
Result:
Setting Fragment with default list value of "Integrated" given by string resource #string/default_mic