I am following developer.android to do their training. I am in the process of "Adding the Action Bar", however, i encountered a problem.
In the section "Respond to Action Buttons" here (http://developer.android.com/training/basics/actionbar/adding-buttons.html#Respond), the line "case R.id.action_search:" has error which says "action_search cannot be resolved or is not a field".
[Delete] In fact, the line "openSearch();" and "openSettings();" have red lines as well, saying "The method openSettings() is undefined for the type MainActivity". [/Delete]
(I know what is wrong here, I need to declare those two methods by myself.)
what should I do? Thx for the help first.
<item android:id="#+id/action_search"
android:icon="#drawable/ic_action_search"
android:title="#string/action_search"
android:showAsAction="ifRoom" />
Firstly, the attribute android:id="#+id/action_search has no problem.
There are two things you need to do that the tutorial seems to have taken for granted
Add an image called "ic_action_search.png" to all the res/drawable directories in your project.
Add the definition for the string resource "action_search" which is being assigned to the android:title attribute. Open the res/values/strings.xml file and add
<string name="action_search">Search</string> over there.
Secondly,
The functions openSearch() and openSettings() need to be defined in the same class by you. Something like :
public void openSearch()
{
//Do something here.
}
public void openSettings()
{
//Do something here.
}
their functionality is not important for the tutorial as they are trying to show how you can control what happens when an option on the action menu is selected.
Go Project->Clean
It worked for me
I tried it and had the same problem. I removed android:icon="#drawable/ic_action_search" (instead of adding the images because I'm lazy) and added the action_search string in the resource file to make sure the menu file wasn't referring to anything that didn't exist. After that, I tried changing android:id to android:title because I saw that it had worked for you, and this was curious. It caused an error after saving, and so I changed it back. After changing it back and saving, the original error in the MainActivity.java file disappeared, and R.id.action_search was resolved. I think the problem is just that R.java is not being updated, and you have to basically hit it with a hammer by forcing an error and fixing it, at least in my case. I don't know why using android:title worked for you. Hope this helps somehow.
Related
I need to see the description of the JFoenix component JFXTextField.
This should usually be possible with CTRL + clicking on "JFXTextField" somewhere in the code.
In this video it works, see 3:20
https://www.youtube.com/watch?v=MU0MCdk3i7s.
However when I do this, this is what I get:
class description
I don't know what's the cause of this so can anybody tell me how I get access to this description?
Thank you!!
So I'm pretty new to the whole Android Studio thing and I've been using the internet to help me with a lot of the things I am doing and needed help on something.
I'm not sure if it's possible to connect this to either a string or an SQL database but I have a Main Layouts with a bunch of buttons that allow me to click on them and choose what external player I would like to use to watch the video. In my MainActivity java class, this is how it finds the button.
case R.id.button3:
intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("http://videoname.mp4"), "video/*");
startActivity(Intent.createChooser(intent, "Choose an External Player"));
break;"
I wanted to know if "http://videoname.mp4" url can be connected to like a string where I can always update or change the URL instead of manually going to find the URL in the MainActivity java and changing it. As of now I have to manually do it but a different way to do it would be helpful.
I'm sorry if it's all confusing, but if you know, please let me know as soon as.
Thank you.
you just need write your string URL :
open your directory folder /res/values/strings.xml -> write your string : <string name="yourStringName>yourStringURL</string>. to use your string do this
getContext().getString(R.string.yourStringName) in fragment
getString(R.string.yourStringName) in Activity
or you can write directly on your code, put your cursor on your string, then press key alt + enter choose extract string resource fill the resource name with your string name
wherever you need to use it, just do point 1 or 2. also in your Intent
hope this help you, never stop learning!
Add it to strings.xml in your project. That is the recommended way of using strings anyway.
I have never really had to ask a question here. Almost any question I can think of has already been asked and answered. Thus the reason I have never registered.
However, I have finally run across something that I cannot find an answer for. I assume it would be fairly simple.
I am trying to implement in app billing for an android project I am working on. I typically code in C# and use Unity to build the .APK.
However, this time I have to make modifications in Eclipse to some PreferenceScreens.
I have an xml file with some string-arrays set up for a ListPreference under my PreferenceScreen. These ListPreference values are then passed to UnityPlayer for a method. That's all set up.
I am trying to figure out a way to set up in app billing to trigger on selection of one of my list preference, or preference items.
I can probably figure a lot of it out on my own, but I need help with a function to do something pulling from a string value in the list preferences. Does this make sense?
I don't expect to be spoon fed, so if I can just get help on a few lines for this I would appreciate it. Of course I won't complain if anyone wants to write up a little 20 liner function to do it for me.
Thanks in advance,
John
** edit **
Here is the xml from the preferenceScreen I need to address with android In App Billing from Java
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:key="wallpaper_settings"
android:title="#string/wallpaper_settings" >
<!-- Ad Placeholder -->
<CheckBoxPreference
android:defaultValue="true"
android:key="rotate"
android:summary="#string/rotateSummary"
android:title="#string/rotateTitle" />
<CheckBoxPreference
android:defaultValue="true"
android:key="doubleTap"
android:summary="#string/doubleTapSummary"
android:title="#string/doubleTapTitle" />
<CheckBoxPreference
android:defaultValue="false"
android:key="swipeEmul"
android:summary="#string/simulateSwipeSummary"
android:title="#string/simulateSwipeTitle" />
<ListPreference
android:entryValues="#array/cameraValues"
android:defaultValue="MainCamera"
android:entries="#array/whichCam"
android:summary="#string/cameraSummary"
android:dialogTitle="#string/cameraTitles"
android:title="#string/cameraTitles"
android:key="whichCam"/>
</PreferenceScreen>'
This question is very generic, on an Android application you might do this by creating an Activity, then starting that activity from your preference "onClick" method and then, once the activity starts, you load all your in app billing stuff (showing a progress dialog) and finally present the "buy" dialog. Is this what you need?
Situation:
I have a TextView that have the property
android:textAlignment="center"
I am generating another TextView dinamically, based on my TextView from XML Layout, using a clone, cloning all the basic properties to work the way above.
Problem:
To do this i need to use this method:
this.myTextView.setMyTextViewProperty(MyTextView.getMyTextViewProperty());
for example:
this.MyTextView.setText(MyTextView.getText());
Note that this.MyTextViewis a local variable and MyTextView is a private var declared on the top of the file, under class name.
I do this on all the properties of the TextView but when i hit the following line of code from the TextAlignment property...:
this.myTextView.setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
I tried to set it to a Custom Aligment instead of getting from my XML TextView It gives me an error:
11-20 15:27:04.460: E/AndroidRuntime(9185): FATAL EXCEPTION: main
11-20 15:27:04.460: E/AndroidRuntime(9185): java.lang.NoSuchMethodError: android.widget.TextView.setTextAlignment
But i see on Ctrl + Space that the method exists, so i cant understand what is happening.
A second try was, to set my TextView property to the property that comes from my TextView:
this.myTextView.setTextAlignment(MyTextView.getTextAlignment());
With no success, too.
Obs: i do not want a Android XML Layout solution, i want a solution on code, because i generate the TextView dinamically on the Activity
I'm using API Level 15
Any help?
The setTextAlignment method was added in API level 17. Maybe your compiler in the IDE is above 17 and the device/emulator which you are testing is less than that. Here the link to setTextAlignment.
Added from the comments:
For API level 15 and below, you want setGravity, per this question.
I'm trying to use UISpec4J to test a file chooser.
A button is supposed to make the file chooser pop up. I found an example for a file chooser that pops up from a menu option:
WindowInterceptor
.run(openMenu.triggerClick())
.process(FileChooserHandler.init()
.titleEquals("Select a template file")
.assertAcceptsFilesOnly()
.select("/home/bond/file.txt"))
.run();
But I can't seem to get it to work with a simple button click instead - I know this is probably a really simple question but I can't seem to find other documentation to get this to work and I am pretty stuck... Can someone explain how to test this? Thanks!
I've also tried example from documentation and failed. Little change could help:
WindowInterceptor
.init(openMenu.triggerClick())
.process(FileChooserHandler.init()
.titleEquals("Select a template file")
.assertAcceptsFilesOnly()
.select("/home/bond/file.txt"))
.run();
I've replaced first instance of run to init.
Probably, it's a typo in docs.