Most samples that I see appear to use an anonymous method in a call like button.setOnClickListener(). Instead, I'd like to pass in a method defined on the Activity class that I'm working in. What's the Java/Android equivalent of the following event handler wiring in C#?
I need some help with switch/case statement syntax. im trying to use onClick to have different buttons do different things. i have the first one working. it just uses an intent to start a new activity. for the next button, i want it to open a specific url looks like this so far
How do i get the engadget_button to open engadget.com?
I used two image button for Next and Back and i used onclick event for those button i want to which image button fire on onclick and run particular function for next or back in onclick event how will i get which image button fire or onclick event at runtime.
I am very new in android development as well as in java. i had developed an application that gets an image url from a site and wanted to download it into the device and later on i would like to enable users to set it as wallpapers. however, i am met a problem when assigning onclick event to a button. Once i uncomment the line in red, it will pop up a box stating that the application was stopped unexpectedly. Can someone please help me with this? code...
I'm creating my first widget and ran into a snag. I have several buttons on this widget and need a way to register an onClick action for each of the buttons. So far I've only found examples where they start a configuration activity from a widget button. Does someone have example code on using buttons in home screen widgets?
In my application i have a button initially on the screen and in onclick of the button ,popup window should open. In the popup window i have an imagebutton , now on click of this button i want to start an activity. The popup window opens but i dont understand how to handle the onclick of the imagebtn inside popup window.
In main.xml i have a button and in popup_example.xml i have an imagebutton.
I have a an AlertDialog where I inflate a View. In that View is also a Button. But when I add the command setOnClicklistener my Code crash? Can you tell me why.. I guess there was a moment it worked.. but I never got it back
Can't I include an OnClicklistener to a Button in View I like to implement into a AlertDialog?
I'm trying to make it so that as long as a user is touching the button, it shows one image, and when the user releases the button, it goes back to a default image.
I'm trying to use a selector to make this happen:
I've tried a few things with the selector, but it always produces the same behavior: the button starts out with the default image, then I press it and it changes to the "record_on" image and it never goes back to the default image when I let go.
Is there a way to get this kind of behavior with an ImageButton, or should I be using something different?
I am working on an application where I need to go to the next Screen form the Main Actvity when I Click on the Image Button of the Main Activity Screen. I had searched a bit on Net regarding this and found something like the OnClickListener method. I am still stuck for what exactly I want to do actually.
im using cellcom milestone and install a italian rom on it. i get the phone with a button on the keyboard that let u switch between the languages. this button located instead the menu button that on the keyboard after i installed the italian rom this button function is pop up the menu and not switching between the languages can i return the function of this button? from the registry or any other way?
I'm able to add the entire power control widget but I'd just like to add the individual buttons like it had preinstalled in the first left extended home screen (WiFi, 4G, GPS and bluetooth). I'm sure I'm missing something terribly simple here but I've looked everything.
I just cannot believe whats happening with my brand new cell phone. Initially when i purchased it , this device started restarting. And when i complain to the SE they told me the battery connecter is damaged. So they sent my cell phone to Dubai SE. Got it replaced, and no restart yet. BUT the right side screen flickers and the switch on/off button is not working. So i cannot switch off my cell phone. If i remove battery and then again insert it, then phone start automatically without using the switch on button. What must be done, i have purchased this cell phone in Qatar and now i am in India. Please help this is so kinda heartbreaking
Two days back I had upgraded my X10mini to andriod 2.1. 24 hours after upgrade the screen got freezed. Its showing FM screen and the restart button is also not working. If I press the power button, screen lights on for some time and goes off. I can't remove the battery as the battery is fixed. Please let me know if you know some other way to restart the phone.
i am looking for a way to directly switch off my android 4.1 htc desire 600 dual sim phone by long pressing the power button presently, when i long press the power button, a dialog appears with the choices of Reboot, Airplane mode, Power off
i read somewhere that *#*#7594*#*# will disable this dialog box and directly switch off the phone but this is not happening
if you know any way or if there is such an app to do this
The problem I was having was that one of the TextViews would turn grey when it wasn't supposed to. I tried fixing it by always setting the text to black again, but that turned every single one of them grey.
Until I tried:
Don't know why the latter works when setting text grey, but there it is. I guess I'm just a little retarded.
How can I enable assert statement on Android? I have referred to a url: http://android.git.kernel.org/?p=platform/dalvik.git;a=blob_plain;f=d... and done what it said: adb shell setprop dalvik.vm.enableassertions all but nothing happen! The test code is: Log.v("assert 1","1"); assert false; Log.v("assert 2","2"); No matter what I did, "assert 2" will be printed, which means "assert false" does nothing! What should I do? BTW, I use eclipse as IDE.
I'm developing an application that tracks the user's current position and stores it into a SQLite database. Everything works fine, but now I have the problem when querying the database for a track with more than 1000 records it takes nearly 1.5 minutes. On my Desktop it just takes 1 second. I know it's a query with many subselects but I wasn't able to get the right result another way. In my opinion this belongs to the aggregate functions like avg() and sum().
I'm trying to reduce the number of queries I do to the Android's database. Basically I want to get any email or IM address that contains a user defined search term. Right now I'm doing two separate queries:
I know the error will probably be painfully obvious to you but using cursor.getCount() on the result of the following returns a 0 when there are multiple items in the table and trips the error "Invalid statement in fillWindow()".
I have a query that selects rows in a ListView without having a limit. But now that i have implemented a SharedPreferences that the user can select how much rows will be displayed in the ListView, my SQLite query doesnt work. Im passing the argument this way:
When creating my SQLite database in Android I set the database locale - db.setLocale(new Locale("cz_CZ")). This is a Czech locale. A SELECT statement works and takes the locale into account, for example:
SELECT * from table WHERE name='sctzy' COLLATE LOCALIZED
But using LIKE will fail: SELECT * from table WHERE name LIKE '%sctzy%' COLLATE LOCALIZED
BTW. There is no java.text.Normalized class in Android. I thought I could make a second column with a normalized text, stripped of special characters, which would be used for searching - but I am missing a class or way how to normalize the String.
i sometimes see this error in my logcat output, Cursor: invalid statement in fillWindow(). it sometimes happens when i press the back key and then it goes to the default android listview before going to my custom listview. what does it mean? how do i solve it? Because it does not point to any line of code where the problem is coming from?
Does anyone have a statement released from Google or someone within Google telling the consumers to avoid Task Managers on Android devices.I went into VZW, trying to get an additional battery (usually if u complain they send u an additional battery) because I'm getting 5-7 hours out of my battery even when I'm careful and try to stretch my battery. So the women asked questions, do u use Wifi...NEVER, don't even turn it on. Brightness? It's 1/8th of the way on to full brightness, Task manager?No Google said not to use one..So she wouldn't send me a battery because she said that its because I don't use a task manager.I was telling her Google had advised us not to and she said, that's false that Google has approved them to put task managers on people's phones who are having battery problems.(I don't believe that)I looked around Google and could only find it from joe-shomes but couldn't find a statement from Google. Can anyone provide a statement from Google that advises us not to use task managers?
Anyone working with big sqlite tables and trying to match rows using patterns (for example for autocomplete purposes) ? recently i played with LIKE statement and it seems it will never use table index (if any), you have to use GLOB instead. but....... the weird thing is that you cannot use selectionParams in your query: you have to specify your pattern in selection like:
My words table has two TEXT columns: 'key' and 'value' and index on 'key'
For example: i have table with ~28000 rows and when using selectionParams my query took 1500 ms and without selectionParams 20 ms does it have anything to do with android or its sqlite weird feature?
I got problem with register. I use an if-else statement to check whether the user left any blank. If there is any blank, an error message will appear. The problem is, even with no blanks, all filled up, the error message still appears and thus prevents user from registering. I can't find any error.
How do I make the Java assert statement work? By "work" I mean that a failed assertion should either stop program execution or at least log the failure. Currently, neither happens. I understand there is a run- time option to enable this (-ea), but I don't know where to specify it. Changing "PreferencesJavaInstalled JREsEdit JREDefault VM Arguments" has no effect, probably because those settings are not used for the Android execution.
So I have a API issue. So i am creating a class that utilizes AndroidHttpClient to download Bitmap images from my server. Problem is, it's API Level is 8 and I want this to be used FROM API 1 and above, now i know i can use DefaultHttpClient (the API is Level 1) but is there a way i can use both, being distinguished by Build.VERSION.SDK (btw thanx for the quick respose, Konstantin Burov and iandisme). So for example, if my device is 2.2 i use AndroidHttpClient, anything else use DefaultHttpClient. Of Course if I import the library it will give me an error on any device 1.5 to 2.1. Any Suggestions would greatly be appreciated, because in the future I would want to set other preferences based on API.