Monica Marcus

I started a tutorial on Cordova (see tutorial) and I just want to create my project. I wrote the command

./create /Users/monicamarcus/Documents/AndroidCourse com.example.tabletapp TabletApp

where the project does not exist yet. The answer was "Segmentation fault: 11". What does it mean? What should I do to get rid of it?

And another question: am I right that I am supposed to write the name of a non-existing project in the create command? Or should it be an existing project in Eclipse? Anyway, I tried it with the name of an existing project in Eclipse and I still get segmentation fault:11.

I want to write a method to change the phone number of a certain contact, identified by name. Here's the method:

protected void updateContact(String newPhoneNr, String name) { //Replace the phone number of the person named name with newPhoneNr cv = new ContentValues(); this.grantUriPermission("com.example.contactsdemo",getTheUri(), MODE_WORLD_WRITEABLE); //cv.put(People.NUMBER, newPhoneNr); cv.put( ContactsContract.CommonDataKinds.Phone.NUMBER, newPhoneNr); Log.i("cv = ", cv.getAsString(ContactsContract.CommonDataKinds.Phone.NUMBER)); int nrOfRows = getContentResolver().update(getTheUri(), cv, ContactsContract.Data.DISPLAY_NAME+"=?", new String[]{name}); //int nrOfRows = getContentResolver().update(getTheUri(), cv, Data.DISPLAY_NAME+"=?", new String[]{name}); //int nrOfRows = getContentResolver().update(getTheUri(), cv, ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME+"=?", new String[]{name}); //int nrOfRows = getContentResolver().update(getTheUri(), cv, null,null); Log.i("Nr rows updated", " = " + nrOfRows); }

As you see I tried several variants, but I always get zero rows updated and the phone number is not changed. Any idea how to get it done? Many thanks in advance for help.

I solved the problem in a very unexpected way. I fancy I should try to import the archive (the zip file containing the google-play-services directory.) And it worked!!! lol!

I re-installed google_play_services successfully and I have google_play_services-lib in my workspace. When I try to import it as a project in eclipse I use File-> Import->Existing Projects into Workspece -> Next -> Select root directory and then I find and select google_play_services-lib but finally it says "no project found to import". Why is that? How can I import this lib into eclipse?

I forgot to mention that I followed the steps at http://developer.android.com/google/play-services/setup.html

I am trying to use Google maps in a very simple app. I get as a warning that Google Play Service is out-of-date and that 3136100 is required. This is only a warning but my application does not show any map. I get again a button to click on it to update Google Play Service and when I click on it I get a Fatal exception:

07-03 06:28:07.472: E/AndroidRuntime(860): FATAL EXCEPTION: main 07-03 06:28:07.472: E/AndroidRuntime(860): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=market://details?id=com.google.android.gms flg=0x80000 pkg=com.android.vending } 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1622) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.Activity.startActivityForResult(Activity.java:3370) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.Activity.startActivityForResult(Activity.java:3331) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.Activity.startActivity(Activity.java:3566) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.Activity.startActivity(Activity.java:3534) 07-03 06:28:07.472: E/AndroidRuntime(860): at com.google.android.gms.internal.bb$5.onClick(Unknown Source) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.view.View.performClick(View.java:4204) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.view.View$PerformClick.run(View.java:17355) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.os.Handler.handleCallback(Handler.java:725) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.os.Handler.dispatchMessage(Handler.java:92) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.os.Looper.loop(Looper.java:137) 07-03 06:28:07.472: E/AndroidRuntime(860): at android.app.ActivityThread.main(ActivityThread.java:5041) 07-03 06:28:07.472: E/AndroidRuntime(860): at java.lang.reflect.Method.invokeNative(Native Method) 07-03 06:28:07.472: E/AndroidRuntime(860): at java.lang.reflect.Method.invoke(Method.java:511) 07-03 06:28:07.472: E/AndroidRuntime(860): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 07-03 06:28:07.472: E/AndroidRuntime(860): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 07-03 06:28:07.472: E/AndroidRuntime(860): at dalvik.system.NativeStart.main(Native Method)

So what can I do to see a map with my application? How do I update Google Play Service?

Sorry for my English ... "it leaves me working on ..."

I discovered which is the line that writes that output on the screen phone: it is the one starting with txt.setText(...
Ok, so this in fact answers my question and lefts me working on the program to get the list of contacts.... hopefully.

However, I decided to post the code for the method I use to list the contacts. Perhaps this way I'll get more chances to receive an explanation.

protected void showContacts() { String [] projection=new String[] { StructuredName.DISPLAY_NAME, Phone.NUMBER, }; int[] to = new int[] { R.id.txtName, R.id.txtNumber, }; txt.setText(ContactsContract.PhoneLookup.CONTENT_FILTER_URI.toString()); Cursor managedCursor = getContentResolver().query(Data.CONTENT_URI, null, null, null, null); startManagingCursor(managedCursor); ListAdapter sca=new SimpleCursorAdapter(this,R.layout.list_entry,managedCursor,projection,to); list.setAdapter(sca); }

Now, after I added three contacts to my list of contacts, I wanted to show (list) them using a cursor and a ListAdapter. I don't get any error but instead of the list of contacts I see written on the screen only the following URI:

content://com.android.contacts/phone_lookup

What does it mean? I might show you the code too, but I'm not sure it is necessary.

Thanks for help!

You are a great programmer, Roland! Thanks a lot. I learned something from this.

Oh, I'm sorry. I must say that I get the NullPointerException when the last line is replaced by the commented-out line. That is, I get NullPointerException from the line
u = getContentResolver().insert(Data.CONTENT_URI, cv);

Thank you, Roland, for the advice. As I mentioned in my post, the NullPointerException occurs in the last line of the method. I tried to see which could be the null pointer, but I saw that none of the objects that appear in this line point to null. Maybe I miss something, but here's the stack trace. I cannot get any more information from the stack trace:

06-24 13:36:32.248: E/AndroidRuntime(6426): FATAL EXCEPTION: main 06-24 13:36:32.248: E/AndroidRuntime(6426): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.contactsdemo/com.example.contactsdemo.MainActivity}: java.lang.NullPointerException 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1970) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.ActivityThread.access$600(ActivityThread.java:128) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1161) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.os.Handler.dispatchMessage(Handler.java:99) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.os.Looper.loop(Looper.java:137) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.ActivityThread.main(ActivityThread.java:4517) 06-24 13:36:32.248: E/AndroidRuntime(6426): at java.lang.reflect.Method.invokeNative(Native Method) 06-24 13:36:32.248: E/AndroidRuntime(6426): at java.lang.reflect.Method.invoke(Method.java:511) 06-24 13:36:32.248: E/AndroidRuntime(6426): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:995) 06-24 13:36:32.248: E/AndroidRuntime(6426): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762) 06-24 13:36:32.248: E/AndroidRuntime(6426): at dalvik.system.NativeStart.main(Native Method) 06-24 13:36:32.248: E/AndroidRuntime(6426): Caused by: java.lang.NullPointerException 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.os.Parcel.readException(Parcel.java:1333) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:182) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:136) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.content.ContentProviderProxy.insert(ContentProviderNative.java:415) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.content.ContentResolver.insert(ContentResolver.java:730) 06-24 13:36:32.248: E/AndroidRuntime(6426): at com.example.contactsdemo.MainActivity.insertContacts(MainActivity.java:62) 06-24 13:36:32.248: E/AndroidRuntime(6426): at com.example.contactsdemo.MainActivity.onCreate(MainActivity.java:41) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.Activity.performCreate(Activity.java:4597) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053) 06-24 13:36:32.248: E/AndroidRuntime(6426): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1934) 06-24 13:36:32.248: E/AndroidRuntime(6426): ... 11 more

Perhaps you or someone else can help me to find out why I get the NullPointerException. Thank you in advance!

I am trying to insert contacts using the following method (in my activity class):

protected void insertContacts(String[] names, String[] numbers, int[] ids) { cv=new ContentValues(); //this.grantUriPermission("com.example.contactsdemo",Uri.parse("content://com.android.contacts/contacts"), MODE_WORLD_WRITEABLE); for (int i = 0; i < names.length; i++) { Log.i("In insertContacts","in the loop " + i); cv.clear(); cv.put(Data.DISPLAY_NAME,names[i]); cv.put(Phone.NUMBER,numbers[i]); cv.put(Phone._ID,ids[i]); //getContentResolver().insert(Data.CONTENT_URI, cv); getContentResolver().insert(getTheUri(), cv); } }

but I get the RunTimeException: aggregate contacts are created automatically. This happens in the last line of the method. If I use instead the commented one, I get NullPointerException. I don't really understand what's happening. How to get rid of the errors? I would very much appreciate your help.

Well, I found the opportunity to try the code on a real device and it works. The emulator is not that reliable... this is my conclusion.

I re-wrote the code so that it does only the downloading. Maybe this way one can give me an idea about what's wrong with it. I really need help. Can't get it to download the file

protected String doInBackground(String... sUrl) { byte[] data = new byte[1024]; int count = 0; FileOutputStream fos = null; BufferedOutputStream output = null; try { URL url= new URL(sUrl[0]); URLConnection connection = url.openConnection(); connection.connect(); Log.v("URL"," " + connection.getURL()); Log.v("File ", "length = " + connection.getContentLength()); // download the file BufferedInputStream input = new BufferedInputStream(connection.getInputStream()); File f = new File(Environment.getExternalStorageDirectory().getPath() + "/twokids.3gp"); f.setWritable(true,true); try { fos = new FileOutputStream(f); } catch (FileNotFoundException fnfe) { fnfe.getStackTrace(); } catch (SecurityException se) { se.getStackTrace(); } output = new BufferedOutputStream(fos); while ((count = input.read(data)) != -1) { Log.v("Count="," " + count); output.write(data, 0, count); } output.flush(); output.close(); input.close(); Log.v("Download","Finished"); } catch (IndexOutOfBoundsException iobe) { iobe.getStackTrace(); } catch (IOException ioe) { ioe.getStackTrace(); } catch (NullPointerException npe) { npe.getStackTrace(); } catch (Exception e) { e.getStackTrace(); } return null; }

And strangely enough, sometimes the method connection.getContentLength() returns -1