Android : Get Context Without Having To Pass It As Argument?
Aug 21, 2010
I'm not sure if this is an Android question or just due to my being new to Java as well. I'd like to use the getString method to get strings from my resources (R.string.whatever). I see that this is a method of the Context class, and I can call it directly from within my main Activity class. But I also have some utility classes in their own class files and can't simply call this method from them. What seems to be required is for me to pass the context (the Activity object) into these other classes via their constructors. Then I can call the method e.g., mCtx.getString(). I guess my main question is whether there's another way to get the Context without having to pass it from class to class as an argument.
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Sep 29, 2010
I am having problem while passing string argument using javascript injection in my android application..
I am using the code...
, but m not getting the exact output..
I want to connect my login form (locally created) with website, so that whenever user enter userID & password in my login form, it automatically get added to that website login form..
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Mar 3, 2010
I use the following instrumentation testrunner command line to run JUnit tests on my project :
code:........
and it runs OK.
I am now trying to pass a property value argument to my instrumentation test runner, something equivalent to the eclipse vm argument -Dcom.myApplication.myProperty="String" The value ("String") of a property (com.myApplication.myProperty) must be defined in the command line. I tried to bend my command line to make this work, changing it for example into :
code:..............
but didn't manage to make it work correctly. Is there a way to make this work ?
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Jul 17, 2010
I'm using a timer which needs context..
Now i have the following code ...
Is this safe to use , or may i be leaking the context here?
btw. this is in a broadcastreceiver.
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May 12, 2010
I have this code fragment: Code...
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May 26, 2010
Is is bad practice to pass the Context to a constructor and save it as a private variable for internal use? The other option is to pass the Context as a parameter to methods that need it.
Which is the better option?
I have a feeling that passing to the constructor might result in memory leaks accidentally.
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Jul 13, 2010
I was just on there yesterday i go into browse tonight and now all of a sudden it says pass world invalid from last night till this morning i tried typing in the little letters they had and I cant read it so I go to the google site. I put the info in and it says sorry account has been terminated for terms and conditions I didnt even do any thing to violate them?
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Aug 28, 2009
I have some layout xml that looks like this:
== file1.xml == <?xml version="1.0" encoding="utf-8"?> <LinearLayout ...> ... ... </LinearLayout>
I want to include that in some other layout xml, so I do this --
== file2.xml == <include layout="@layout/file1.xml"/>
The question I have is how to pass arguments (and refer to them) from file2.xml to file1.xml. So, for example:
== file1.xml == <?xml version="1.0" encoding="utf-8"?> <LinearLayout ...>
<TextView android:text="@text" android:layout_width="fill_parent"
android:layout_height="fill_parent"/> ... </LinearLayout>
== file2.xml == <include layout="@layout/file1.xml" text="abc"/>
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Sep 29, 2010
I have the following program i got the exception below.
CODE:.........
I got the Following Exception
CODE:............................
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Jun 12, 2010
When I add the following line to my GLSurfaceView class I get an IllegalArgumentException from some random place. I don't know where the problem is because it doesn't give a stack trace. set EGLContext Client Version(2); What else do I need to do to get an OpenGL ES 2.0 application to work? I have tested this with a completely empty renderer class (and also put breakpoints on every callback, and none of them get hit, indicating that the error occurs before my renderer even gets involved). Does anyone have a complete working example of how to get started with Android OpenGL ES 2.0 development? [There is also a stackoverflow entry here -> http://stackoverflow.com/questions/3026368/illegalargumentexception-w]
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Sep 9, 2009
Simple notification crashing with Illegal Argument Exception, crashes with "Illegal Argument Exception"
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Mar 12, 2010
Yes, I know you need a unique resource id when calling the version of these functions that requires a key, but I cannot for the life of me figure out how to create a resource id that can be used in this way. A final variable in my class wont work and neither will a hard coded value. Both threw an IllegalArgumentException. So what gives, how do you use these methods?
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Sep 22, 2010
Since API 7, PhoneStateListener has a function: void onSignalStrengthsChanged( SignalStrength signalStrength )
Question: how can I override this via reflection so that I can stay backwards compatible with earlier APIs that don't have the SignalStrength class ? If I make the argument an Object, the signature changes of course.
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Nov 8, 2010
I am getting this error automatically sent to me from a lot of beta users. ava.lang. Illegal ArgumentException: View not attached to window manager at android.view. Window Manager Impl.findViewLocked(WindowManagerImpl.java: 355) At android.view.Window Manager Impl. removeView(WindowManagerImpl.java:200) at android.view. Window $LocalWindow Manager . removeView(Window.java:43 2) at android.app.Dialog .dismissDialog(Dialog.java:278) at android. app. Dialog. access $000 (Dialog.java:71) at ndroid.app .Dialog$1.run (Dialog. java:111) at android .os.Handler.handleCallback(Handler.java:587) at android.os. Handler. dispatch Message(Handler.java:92) at android. os.Looper. loop (Looper.java:143) at android.app. Activity Thread . main (Activity Thread.java:4701) at java. lang.reflect .Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:521) At com.android. internal.os. ZygoteInit $Method And Args Caller.run (ZygoteInit .java:868) at com.android.internal. os. ZygoteInit .main(ZygoteInit.java:626) at dalvik . system . Native Start.main(Native Method) Since it comes from external beta users I dont know what they were doing when they got it. Nor do i know how to reproduce it. The stack trace does not list any of our code. Usually, this error means that there was an orientation change while a dialog was open, thereby invalidating the reference to the dialog when android recreates it. All of my activities already uses Android:configChanges="keyboardHidden|orientation" in order to prevent them from doing this. We still get the error. Has anyone else seen this before? What could be the problem?
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Sep 29, 2010
So how can I fix this problem. It seems my DDMS is broken down.
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Sep 1, 2010
While doing normal day-to-day Android development, is it safe to assume that hook methods called by the system will not pass in invalid references (ex.: null), or should I always be double-checking what arguments get passed in?For example, can the method onOptionsItemSelected(MenuItem) ever have a null MenuItem reference passed into it?The reason I ask is because I was working on the Notepad 1 tutorial,I started wondering if I should be testing if item is null before making a getItemId() method call on it, or just trust the system to not ever pass me a null?I don't want to make my code slower by doing null checks when I shouldn't be worried about that happening, etc.
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Jan 21, 2010
How can I launch a contextmenu from a contextmenu? I'm trying to replicate the MediaPlayer action that happens when you long click a song, then click "Add to playlist" in the resulting contextmenu. When you click that menu item, another contextmenu pops up with "Add to playlist" as the title, and "Current playlist", "New", and however-many-playlists-you-have defined after that.
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Oct 31, 2010
I have seen this question answered but the answers do not apply to me. I am a beginner to Android and I am trying to run HelloWorld with the Eclipse Plug-in that I have downloaded Api's 7 (2.1) and 8 (2.2) and have created a virtual devices for each version. I am running eclipse in xp with 1.6.0_22-b04 (32bit) no 64 bit jre installed on the system. I get the following stack trace when the emulator is launched:
IllegalArgumentException: bad version: standalone
com.android.sdkstats.SdkStatsServer.normalizeVersion(SdkStatsService.java:467)
com.android.sdkstats.SdkStatsServer.doPing(SdkStatsService.java:130)
com.android.sdkstats.SdkStatsServer.ping(SdkStatsService.java:85)
com.android.ddms.Main.main(Main.java:85)
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Oct 13, 2010
Everytime I run update.zip, this happens: Can't mount dev/block mmcblk0p1 Invalid argument ****MANUAL MODE****
I think it has something wrong to do this this post at XDA?
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Jul 14, 2010
I created a sql lite database with the following columns:
static final String dbName="demoDB";
static final String tableName="Employees";
static final String colID="EmployeeID";
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE "+tableName+" ("+colID+" INTEGER PRIMARY KEY AUTOINCREMENT, "+
colName+" TEXT, "+colAge+" Integer);");
I want to select all the records in the database like this and display them in a gridview:SQLiteDatabase db=this.getWritableDatabase();Cursor cur= db.rawQuery("Select "+colName+", "+colAge+" from "+tableName, new String [] {});String [] from=new String []{DatabaseHelper.colName,DatabaseHelper.colAge};
int [] to=new int [] {R.id.colName,R.id.colAge};
SimpleCursorAdapter sca=new SimpleCursorAdapter(this,R.layout.gridrow,c,from,to);
GridView grid=(GridView)findViewById(R.id.grid);
grid.setAdapter(sca);but i receive the following exception:java.lang.IllegalArgumentException: column '_id' does not exist.the db table does not have a column with name '_id'so what is wrong with this code
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Nov 9, 2010
I'm writing a small program, it can show and manager all files and folder in the android mobile. Now I get a problem need to help, when I click to a file icon, example a audio, i want the audio player can run and play it.
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Jul 19, 2010
I'm confused about the concept of the Context class. I see that it's a base class of Activity, but the Android docs also mentions the Context storing global information about the app environment. So in my app which has 3 activities, does that mean I have 3 distinct Context objects, or do they actually refer to 1 entity? Also, what is the lifetime of a Context object- does it live until the last component of this activity's process is garbage collected?
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Nov 24, 2010
i have got a stupid question to ask. I created a custom ContextMenu. But when i call the menu, the menu displayed will also have the default menu added in. Is there anyway for the default ContextMenu not to appear as well?Code requested: @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
menu.setHeaderTitle("Recipients");
inflater.inflate(R.menu.menu_contacts, menu);
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Jan 4, 2010
Is there a way to get the current Context instance by using a static method? I'm looking for that way because i hate saving the context instance each time it changes.
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May 15, 2009
When you are developing on an application level(Services, Activities) you always get this Context reference automatically. But what if I am on a lower level and developing a program started with app_process, how can I get hold of a Context then? Its a huge part of the API that need this context. What the proper way to create a Context instance?
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Jun 12, 2009
In an Android app, is there anything wrong with the following approach..
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Nov 8, 2010
I would like to pass a value from the AppWidgetProvider to a service. How can I do that? This value is taken from the widget configuration. If this value changes (by going to the configuration again), how do I pass it back to the service? Is there another way to do this?
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Nov 24, 2010
this is the first class, displays listview from sql and pops up a option on longpress. I wanted to pass the ID number of the current select row to be processed on another class.
CODE:............................
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Apr 21, 2010
I cannot find it anywhere on the droid market place...
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Feb 17, 2010
Class AddText(extends Activity), Grafitti(extends MapActivity) and MarkerOverlay. Grafitti calls AddText, and AddText opens a new Activity that gets an input from user (EditText), then when that is successful Grafitti calls MarkerOverlay. The problem is I can't access the input in AddText. I need to use that input in MarkerOverlay, I tried creating a setter and getter but it won't work. (error) I've tried searching the web and I think the solution is Bundle. I'm having a hard time understanding how Bundle works. Is there any other way? or any code snippet on how to use Bundle. A code snippet would really help me a lot.
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