Android : Need Http Client POST - Null Pointer Exception

Aug 22, 2010

I am new to Android development since my EVO purchase a few months ago. Anyway, I am developing my first Android app using Eclipse and Android SDK emulator. I am trying to do a simple HTTP POST. My real code has my login information hard coded in so I replaced it with test information and I changed the url as well to simply POST to I am getting a NullPointerException when trying to view the HTTP POST request response. I have added the internet permissions to my manifest xml file as well. Code...

Android : Need Http Client POST - Null Pointer Exception

Android :: Why Do I Get Null Pointer Exception From TabWidget?

May 31, 2010

I'm writing an android program in which I have an activity that uses tabs.Anybody have any idea how I can get this content into a tab without crashing my application? My actual program is more complex and has more than one tab but I simplified it down to this in an attempt to find out why it's crashing but it still crashes and I don't know why.If I don't use LayoutInflator my program doesn't crash but I don't get any content either, just tabs.

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Android : Null Pointer Exception When Installing SDK On Mac OS X

Apr 1, 2010

I'm installing the Android SDK on Mac OS X. Following the instructions on the Android Development site, I've downloaded the SDK and modified my .bash_profile to include the path. The next step is to use the Android SDK and AVD Manager to actually download the platforms.
However, when I use the Manager to install the platforms, I get the following error in the Terminal. I've looked around for similar problems in the Eclipse and Android forums and haven't found anything yet. Is something else damaged in the environment and needs to be repaired? Any recommendations on where I should look? Code...

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Android :: Null Pointer Exception At Broadcast Receiver

Sep 4, 2009

I am receiving Text messages from another application sent through broadcast intent. I am displaying these messages to my application's GUI. In my application I had defined <broadcast receiver> in my manifest.xml

<receiver android:name=".HHBroadcastReceiver">
<action android:name="android.demo.test"/>

And also define the logic in the Broadcast receiver class
public class HHBroadcastReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { //TODO: React to the Intent received.
String msg_receive = intent.getStringExtra("message1");
"+msg_receive); } }

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Android :: Null Pointer Exception In Location Manager

Sep 28, 2010

I need to disply current Position latitude and logintude...I tried but it will show Null pointer exception.. here with i attached my code...

I run this application on android emulator


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Android :: Wh Program Is Showing Null Pointer Exception?

Apr 23, 2010

I cant figure out why my program is showing null pointer exception. Plz help me.I have declared the getter and setter methods in a seperate claa named SongsList. Plz help me determine the problem...

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Android :: Null Pointer Exception In Get From Location Function

Sep 8, 2009

I'm trying to get a location from lat /lon values with the getFromLocation function:

adresses = geocoder.getFromLocation(lat, lon, 1); // Search addresses

The function should return a empty List, if it don't find an address, but it throws the NullPointerException. What can/must I do to fix it?

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Android :: SQLiteOpenHelper.getWriteableDatabase() Null Pointer Exception

Nov 16, 2009

I've had fine luck using SQLite with straight, direct SQL in Android, but this is the first time I'm wrapping a DB in a ContentProvider. I keep getting a null pointer exception when calling getWritableDatabase() or getReadableDatabase().

Is this just a stupid mistake I've made with initializations in my code or is there a bigger issue?


But here's LogCat showing the exception:

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Android : Received App.Application Null Pointer Exception

Sep 23, 2010

When my app loads, I fill my with some data. The app runs fine as I use it and all the data is available. However, when I leave the app over night and look at it again the next day, I receive NullPointerExceptions when attempting to use that same data. I do not believe Application objects get garbage collected, so I have no idea what is going on? I also lose static objects in classes used by my Activity classes. I am on Froyo 2.2 on a Google Nexus One. Looks like someone else had a similiar issue:

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Android : Null Pointer Exception While Building Phone App Using Ant

Feb 11, 2010

While building the android app using ant am getting the following exception. Couldn't figure out why these exception are thrown! Code...

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Android : Running An App In Eclipse Causes Null Pointer Exception

Feb 9, 2010

I have been following the Android getting started docs and when I try to run the project I get: !MESSAGE An internal error occurred during: "Launching HelloAndroid". Code...

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Android : Null Pointer Exception In Application Working On GPS

Nov 12, 2010

I have the following very simple class which looks for the last known user coordinates and then prints one of them. But I am getting loc as null variable. That is the application is not reading the data into the loc variable. Still it doesn't fire any toast command in the function. Code...

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Android : Null Pointer Exception When Trying To Connect To Web Service

Jun 2, 2010

My web service should be returning an integer, but every time i run the code i get the NullPointerException error. i think my url string may be the problem, but i've tried using my ip with no luck. Code...

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Android :: Handler From A Runnable Throws Null Pointer Exception

Sep 20, 2010

I have a Thread that downloads data from internet


There is an activity that needs to be updated according to downloaded data.


Whenever I run above code I get NullPointer Exception .Please help me to update the view.

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Android : Null Pointer Exception When Assigned A View To An Activity

Jul 27, 2010

I have built an activity to handle gestures in my Android game and want it to respond to a gesture anywhere on the screen but I am getting this error on the Log:


I understand I need to allocate a view to the activity and as you will see in my XML, a view called gestures will serve this purpose but I keep getting Inflation errors when trying to inflate the view. Before when this happened to me it was a misspelling of the view name in the XML but that's not it this time I don't think.

How would I properly assign the 'gesture' view to this activity to prevent the errors?

I have defined my activity in my code like this:


I have created the activity in the main thread in it's doStart() method by saying:


And my XML layout looks like this:


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Android : Spinner Throwing A Null Pointer Exception Failed

Aug 27, 2010

I'm having trouble with a spiner throwing a nullPointerExpression I'm sure I'm missing something stupid? Code...

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Android : Why Null Pointer Exception When Parsing Xml In Phone Application?

Aug 7, 2010

We have a android application that works fine up to android 2.1, but when we try to release it for android 2.2 we get a nullpointerexception. This happens when we're parsing a xml, on the following line of code...

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Android : Layout Auto CompleteTextView Null Pointer Exception Workaround

Nov 8, 2009

I'm working in with the Android SDK 2.0 / Galileo / ADT 0.9.4 (latest to date). Against Android 1.5 API layer. If I go to the layout editor and add an AutoCompleteTextView the screen immediately gives me a NullPointerException. Does anyone have a documented workaround for this problem? I can't seem to find one. This is obviously a bug in the Android SDK. (It's been filed anyway.)

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Android : Receiving A Null Pointer Exception When Calling A Cursor In Phone

Mar 18, 2010

I am creating an application which tracks the users location using GPS, stores the longitude and latitude in a database using a content provider then output the first long and lat to a mapview. I am able to create the cursor using this line of code...

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Android : Null Pointer Exception While Working With Phone Development In Eclipse

Aug 20, 2010

I'm just getting started with Android app development on a Mac, and I keep getting a NullPointerException everytime I go into Strings.xml to edit it. Here's the steps I followed - The project compiles and runs fine, but if I add even a single character to Strings.xml, a popup comes up that says - "An error has occured. Please see the log for details. An error has occured. Please see the log for details." When I click details, all I see is - "An error has occurred. See error log for more details. java.lang.NullPointerException" Anything I'm missing completely? Code...

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Android : Development Java Null Pointer Exception When Trying To Get String Extra()

Nov 6, 2010

In my main activity, I have the following code that calls my FileBrowser activity: What's wrong? Can I not use putExtra with startActivityForResult? Can putExtra only be used with startActivity? Code...

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Android :: Public Class Preference Extends Activity - Null Pointer Exception

Jun 19, 2010

My app crashes with a null pointer exception on the code below. I have an xml preference file under res/xml/defaults.xml
public class Preference extends Activity {
public Preference() {
} public String getPreference(String key)
{ //it still crashes here
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
String result = settings.getString(key, null); return result;
} }

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Android :: Null Pointer Exception Occurs When Trying To Create File And Write Data

Oct 26, 2010

I am trying to create a file ,if it doesnot exist and tried to write some data to it. The same program I did in java, it was running fine.But when I try to do the same thing in Android I am getting NullPointerException at the place where I am trying to write data to file. And also, I did not find any new file in the current directory .

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Android : Why Does This Phone File Output Stream Throw A Null Pointer Exception?

Aug 16, 2010

There does not seem to be any Android manifest permission that needs to be set for file io. Code...

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Android : Null Pointer Exception In Wyswig Xml Layout In Eclipse For Visual-artifacts

Nov 19, 2010

I'm currently developing an application for Android which needs to use a custom made Tabs. I have encountered two problems: I'm getting this exception when i want to switch from a text mode to wyswig mode in Eclipse. This is the actual xml code that gives me that error...

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Android : Need To Start Bluetooth Settings Activity Force Closes With Null Pointer Exception

Nov 19, 2010

I'm trying to bring up the standard window for Bluetooth Settings (with Device name, Discoverability etc). However, general approach with startActivity(intent) ends with NullPointerException pointing to onCreate:135. Checking with the Android code, I've found that at line 135 they get some extras from the intent. So I prepare the same extras (names I've found in android core BluetoothDevicePicker interface) and issue it -- the same effect with NullPointerException. Might be the wrongs names of the extras I prepare? So is there a way I can see those extras (with names especially) from the intent the system itself submits when I open Bluetooth Settings manually acting like a user. Code...

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Android : Null Pointer Exception In When Building

Sep 26, 2010

I configured my android project to use ant. When building using the keyword release it fails with this message: It looks like there is some problem with but I don't know how/where to get the source of Has anyone run into this problem and found a solution? I'm using android SDK tools revision 7 if that helps. Note: Running "ant debug" or "ant release" all comes out to the same result. Code...

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Android :: Project Using Httpclient - Http.client - Apache - Post/get Method

May 17, 2009

I'm doing a Get and Post method for an android project and I need to "translate" HttpClient 3.x to HttpClient 4.x (using by android).

My problem is that I'm not sure of what I have done and I don't find the "translation" of some methods...

This is the HttpClient 3.x I have done and (-->) the HttpClient 4.x "translation" if I have found it (Only parties who ask me problems) :


I don't know if that is correct. This has caused problems because the packages are not named similarly, and some methods too. I just need documentation (I haven't found) and little help.

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Android :: Apache Http Client Producing CertPath Validator Exception

Nov 6, 2010

I'm developing an Android application for accessing some ( account data (for World of Warcraft) and I'm using the org.apache.http.client.HttpClient to do so. This is the code I'm using: public static final String USER_AGENT = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20100722 Firefox/3.6.8 (.NET CLR 3.5.30729)"; public static class MyHttpClient extends DefaultHttpClient { final Context context; public MyHttpClient(Context context) { super(); this.context = context; }@Override protected ClientConnectionManager createClientConnectionManager() { SchemeRegistry registry = new SchemeRegistry(); registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); // Register for port 443 our SSLSocketFactory with our keystore // to the ConnectionManag registry.register(new Scheme("https", newSslSocketFactory(), 443));......

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Android :: Why Do I Get Null Pointer With FindWiewById ?

Jun 15, 2010

I'm working on an application where I want to add adWhirl to manage adds. The app is working fine until I tryed to use adWhirl. I have try to get the view created with setContentView(R.layout.main) by calling LinearLayout layout.

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