Android :: Include Library Based On API Level Or If Statement?
Aug 17, 2010
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.
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Nov 11, 2010
I have an Android library project that makes calls to PreferencesManager.getDefaultSharedPreferences.
I have 2 version of my app, paid/free, and they are not able to access the preferences stored by the library code.
Can someone tell me the right way to store values in SharedPreferences in library code and have the values available to projects that include the library?
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Aug 14, 2009
I am new to the concept of ZXing,so i want to know the step by step process to use the ZXing in android and i am using eclipse as IDE.
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Apr 22, 2010
I am developing a library for Android applications which does not use native code (JNI). I have tried suppling the library as an external jar in my Android projects but this method does not include the library contents in the apk and thus throws class not found errors when run in the emulator or device. I have also tried creating the library as an Android project in itself and this does work, but only for public static properties (not methods). With the library and application both being in separate apk's I can see that the VM notices references to the library and can read some properties, but when an attempt to instantiate a class in the library is executed I get class not found even though I can read the public static properties from it.
I realize that Davlik byte code is not the same as Java byte code but I am having trouble even finding good information about how to solve what would seem to be a very simple issue in Android. I am looking into the old PlatformLibrary stuff right now but I am not convinced this will work either since the sample has been removed from the Android site.
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Aug 18, 2010
I am new to the android programming environment. I am currently working on a project which deals with the user's phone battery level.I am showing the current battery level left on the phone.now i want to display the amount of duration of "idle time, talk time, video playback, audio playback and web surfing" that can be done based on the current battery level. What kind of approach shall i follow.(or) What available API shall i use to get those.
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Jul 16, 2010
I have a cross-platform C library that I need to compile for Android as a *.so file. The library consist of many .c and .h files, and it use autotools as it's buid system. (./configure && make dep && make). Afaik, the library does not depend on other libraries, other than libc and OpenSSL (which should be present on Andriod).
I'm trying to find the simplest (read fastest in terms or not needing to read hundreds of pages of manuals and then apply try && fail brute-force approaches to complete the task) way of getting the library off my machine in source code form, and into the Android phones as a .so. The library will eventually be accessed from Java's native library interface. For development, I have both Windows and Debian machines on my desk.
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Jul 2, 2012
I'm having trouble developing an app, while it works in API level 10, it does not in API level 7. I wondery why and I've been looking for a site that summarizes the differences, or the new features from one API level to another and cannot find it.
09-04 04:24:21.485: E/AndroidRuntime(6834): Uncaught handler: thread main exiting due to uncaught exception
09-04 04:24:21.510: E/AndroidRuntime(6834): java.lang.VerifyError: [code]....
There seems to be a problem with an uncaught exception and reflection, although....why does it work on API level 10?
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Aug 17, 2010
According to this SDK guide, unit-testing a Library project can be achieved by creating a standard application project, reference the Library project and then instrument the application for unit testing. However, when I do this and launch the test application I get the message.No tests found with test runner 'JUnit 3".I'm using Eclipse and the Android ADT plugin, all latest versions.the projects compile just fine. The test project also installs fine to the emulator. But in the console I can see that it looks for <library>.apk, which of course doesn't exist since I'm compiling this as a library into the test project.
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Aug 26, 2009
I created a jni library which depends the third shared library, I must copy the third shared library to /system/lib, otherwise, Java application can't load jni library. But you know, on G1 with official OS image, /system/lib is readonly. I tried to call System.setProperty to set java.library.path to the location stored the thired shared library before load jni library, but the issue still exists.
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Jul 15, 2010
As I understand, the three ways of distributing my application are via Jar, Android Library and Android Library Project.Jar - cannot contain resources or XML layouts (so this is out for me)Android Library - I don't really know how this works but the Google API uses it..Android Library Project - includes resources but allows the client free rein on the code as it is distributed as source.If I am to create a closed source application that requires drawables and XML files that I want to distribute to other Android programmers, what should I use? And can someone direct me to a tutorial on creating an Android Library?
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Feb 16, 2010
I have a strange issue. I am new to java/android but come from a programming background maybe I am just missing or doing something stupid with syntax here. I have a string variable called reportlength
String reportlength;
I then go: reportlength = intent.getExtras().getString("ReportLengt");
Now in my debug console for the variable reportlength it has it set as "d" (that is the correct value it should have)
At this point I have my if statement:
CODE:......................
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Jul 20, 2010
So I've got this code (updated for solution).
CODE:.............
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:
CODE:................
Don't know why the latter works when setting text grey, but there it is. I guess I'm just a little retarded.
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Jan 26, 2010
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.
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Jul 23, 2010
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().
Here's my query:.................
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Sep 27, 2010
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:
Email:...............
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Mar 1, 2010
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()".
CODE:...............
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Jul 15, 2010
CODE:...........................
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Mar 23, 2010
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:
CODE:...................
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Jul 28, 2010
I'm getting unexpected behavior in my Android 1.5 application under the Windows emulator and debugging with Eclipse. Here's a generalization of what the code is doing:
if (someCondition) {
System.out.println("got here");
return "a";
}
if (someOtherCondition)....................
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Aug 13, 2010
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.
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Aug 25, 2010
I have a central activity that can be launched from two separate classes. I was hoping that in this central activity I could have an IF statement like
if(this.getIntent() == MainMenu.class)
{
// Do something here
}
But obviously that isn't legal so how could I structure an expression to check from what class an intent was started.
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Nov 16, 2010
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?
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Aug 1, 2010
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?
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Nov 2, 2010
I cannot figure out why I can't get this method to enter the if statement.
CODE:.........
Note that the log and debug mode shows that "start = 0"
I also tried
if (start == 0l) {
if (start == 0L) {
What the heck am I missing here? Does 0 != 0?
I'm developing in Eclipse with Java for Android. Thanks.
@methodin - no sorry, that does not work.
@Aioobe - I have a breakpoint under the IF statement, that never gets made.
Here is the actual code I'm running since you've asked.
CODE:................
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Nov 7, 2010
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
CODE:..............
How do i get the engadget_button to open engadget.com?
Is it just something like this:
CODE:....................
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Apr 25, 2009
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:
CODE:........
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?
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Jul 29, 2010
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.
Please help me spot my error.
CODE:..................
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Oct 15, 2010
CODE:............................
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May 26, 2010
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.
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Oct 1, 2009
Let's say I have a few buttons in a LinearLayout, 2 of them are:
mycards_button = ((Button)this.findViewById(R.id.Button_MyCards));
exit_button = ((Button)this.findViewById(R.id.Button_Exit));
I register setOnClickListener() on both of them:
mycards_button.setOnClickListener(this);
exit_button.setOnClickListener(this);
How do I make a SWITCH to differentiate between the two buttons within the Onclick ?
public void onClick(View v) {................
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