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  • Listview with alternating resources in Android

    - by Fran
    Hi! I have a ListView and an adapter that sets alternating background colors to the list items overwriting getView Method in my adapter. I want to go further and I would to set to each row a Resource background. I try in getView call the method setBackgroundResource: private int[] messages = new int[] {R.layout.message,R.layout.message2}; //... public View getView(int position, View convertView, ViewGroup parent) { View v = super.getView(position, convertView, parent); int MessagePos = position % messages.length; v.setBackgroundResource(messages[MessagePos]); return v;} But this not work, and I the message throws by exception is File res/layout/message.xml from drawable resource ID #0x7f030004 Any ideas? Thanks!

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  • change view with onSensorChanged result

    - by tipu
    I have a view, set by setContentView(new CompassView(this)); I have the onDraw and update methods filled out. What I need to do with the view CompassView is update my view with the new data at the end of the call in the onSensorChanged method. The methods I have to fill out, I believe, are the surfaceChanged and surfaceCreated. They are normally using threads which takes care of the update and onDraw calls but I removed the thread because when the thread was enabled, in the infinite while loop I was never getting any azimuth value what so ever.

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  • List view and list adapters for displaying json

    - by Rahul Varma
    Hi, I am trying to display the text from json in a list view. I got help for retrieving the json text from the following... http://www.josecgomez.com/2010/04/30/android-accessing-restfull-web-services-using-json/comment-page-1/#comment-498.... But my problem is that i cant figure out how to display them in list view. I also want to get only some of the text from url(for example, alerttext and date). Can anyone help me in declaring the list adapter and list view in order to display the data in the way i want... Plzzzz...

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  • Android RelativeLayout spacing

    - by fordays
    Hi, I'm just putting the finishing touches to my Android app. Unfortunately, I dug straight into development without reading the documentation and built my layout with AbsoluteLayout and it turned out to look terrible when I loaded the app on my phone. Now I'm redoing the UI in a RelativeLayout and I want to put empty canvas space in between my ViewGroups in the y-direction. I am currently achieving this by putting random TextView sentences that are of the same color as my View's background in order to make psuedo-empty space. Is there a better way to do this, because right now when I define a specific ViewGroup to be placed below another View, it gets stuck right below the top View. As I was writing this, it dawned upon me that using padding might be the answer.... Any other suggestions?

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  • How do I programmatically add an Android Gestures view to a custom view?

    - by user351201
    I have a custom view that works fine and I'm trying to get gestures into it. The most common technique I see is to add XML, such as this (from Android docs: My view is within a RelativeView and when I attempt to reference this GetureOverlayView, I get an exception. I've also tried to connect within my existing custom view class, like this: mGestures = new GestureOverlayView(context, attrs); mGestures.addOnGesturePerformedListener(this); But the callback is never invoked. Can someone see my errors or suggest a better way that will allow me to get gesture callbacks?

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  • change background color of the layout in Android

    - by qwerty
    Hello, I have a simple Android application, with 3 buttons. When i click on the 1st button, i wanna change the background color of the layout (which is now white... i wanna change in other color, when i press the button). How can i do this? On that button, i have a myClickHndler event public void myClickHandler(View view) { switch (view.getId()) { case R.id.Button01: text.setText("Button 1 was clicked"); break; case R.id.Button03: //text.setText("Button 3 was clicked"); .................... // ? break; } } Thanks!

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  • custom ListView --Null pointer exception

    - by raghs
    this code throws a Null pointer exception. It was thrown by getChildAt(i). The getCount() returns the number of items in listView. But getChildAt(i) returns only if item is present in current list view. For example in a scrollable list view assume that there are 20 items. The getCount() returns 20. But getChildAt(20) returns null. Because it doesnot fit in listview. How to solve this problem?? int i,j=object.getCount(); View v=getListView(); CheckBox chk=null; for(i=0;i<j;i++) { chk=((CheckBox)((ViewGroup) v).getChildAt(i).findViewById(R.id.checkBox1)); if(chk.isChecked()) { //download the contents to specific folder in sd card } }

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  • Android font out of view on small screen

    - by user581949
    Hi Everyone I have several text views that take up the majority of the screen in landscape view in a relativelayout and the font size i have set is quite big (150dp). The text views are all timers and the furthest to the right is the "seconds" textview. My problem is that when testing on a phone with a small screen res the seconds are way outside the limit of the screen and can't be seen. They are in perfect place on normal to large screen resolutions just not on a small screen. Is there any way i can force the "seconds" text view to stay on screen, without adjusting the font size or margins between each text view? Even if it means looking cramped on a small screen i can live with that. Any help is greatly appreciated. Thanks This is the corresponding code:

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  • Expand Expandable Listview in android on button Click

    - by user3146145
    I am implementing expandable list view with its custom adapter. The group element needs to have 2 buttons, first as a parent group element and a button below it. My problem is, I want to expand the list view on click of the button below instead of the group element. Also, The group element onClick needs to call another activity. I can disable the expanding of the expandablelistview by `mainExpListView.setOnGroupClickListener(new OnGroupClickListener() { @Override public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) { return false; }` So my questions: Is there any way to disable the group element and get it to perform other functions (Like navigate to another activity?) How to set an onclick method on them bottom image to expand? Thank you.

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  • Android TranslateAnimation resets after animation

    - by monmonja
    I'm creating something like a SlideDrawer but with most customization, basically the thing is working but the animation is flickering at the end. To further explain, I got an TranslateAnimation then after this animation it returns back to the original position, if i set setFillAfter then the buttons inside the layout stops working. If i listen to onAnimationEnd and set other's layout to View.GONE the layout fickers. Judging from it is that on animation end, the view goes back to original position before the View.GONE is called. Any advice would be awesome. Thanks

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  • Help making a button open another app with Java/Android

    - by user569503
    I am trying to learn to make a simple app that opens a couple of other apps to eliminate the need for another apps. I just can't figure it out. From reading here and other places it seems this should work. Button batteryhistory = (Button)findViewById(R.string.BatteryHistoryButtonDialog); batteryhistory.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent i = new Intent(); ComponentName n = new ComponentName("com.android.settings", "com.android.settings.BatteryHistory"); i.setComponent(n); startActivity(i); Thanks so much for the help :D

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  • Can't remove a view included using a include tag

    - by Julio Rodrigues
    Removing a view that was included using a <include> tag seems to have no effect. ViewGroup currentPersonContainer = (ViewGroup) root.findViewById(R.id.propria_pessoa_container); if (dto.occupation!= null) { . . . } else { root.removeView(currentPersonContainer); } After the root.removeView(currentPersonContainer); I can still find it in root and the view is still visible. How can I remove a view included in a xml layout resource file?

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  • HTC Android Fails to mount- Mount from computer?

    - by Ben Franchuk
    I Have an HTC Incredible S (S-Off, Rooted, ViperVIVO 1.3.0 ICS) that has seemingly ceased to posses the ability to mount its SD Storage to my computer. For whatever reason, whenever I plug in my device to transfer files from computer to phone and vice versa, the computer, for some reason, cannot actually aces the phone. I get prompted with a window on my phone when I first plug it in, asking me which mode I want to put the device into (Charge mode, tether mode, etc.), and even if I select the "Disk Drive" function, the phone still cannot successfully mount to my computer. The phone itself unmounts itself from the SD and says that the computer is connected, but again, it doesn't work. Is there any way to force mount the device from my computer- either via command or otherwise? This should help in that if I unmount the SD from the phone I should be able to mount it to my computer, from my computer, Correct?

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  • Android tethering via bluetooth keeps disconnecting

    - by Ian
    I'm currently using a Google Nexus tablet tethered via Bluetooth to a Samsung S3 for internet. Two things are annoying me. First, if I take the phone away from the tablet (go out for lunch), the tablet disconnects and has to be manually reconnected. Is there a way to have that happen automatically? Second, Bluetooth tethering, i.e. the internet sharing part needs to be switched on each time the bluetooth is switched on (or perhaps just after power cycling) on the S3. Is there no way to have that default to on? Thanks

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  • error Caused by: java.lang.OutOfMemoryError Load Image

    - by user2493770
    This is my method to load images in background, the first and second load normally. But after these loading, a memory error appears. How can I fix this? public class MainArrayAdapterViewHolder extends ArrayAdapter<EmpresaListaPrincipal> { private final Context context; private ArrayList<EmpresaListaPrincipal> data_array; public DisplayImageOptions options; public ImageLoader imageLoader = ImageLoader.getInstance(); public MainArrayAdapterViewHolder(Context context, ArrayList<EmpresaListaPrincipal> list_of_ids) { super(context, R.layout.main_list_rowlayout, list_of_ids); this.context = context; this.data_array = list_of_ids; //------------- read more here https://github.com/nostra13/Android-Universal-Image-Loader options = new DisplayImageOptions.Builder().showImageForEmptyUri(R.drawable.ic_launcher).showImageOnFail(R.drawable.ic_launcher).resetViewBeforeLoading() .cacheOnDisc().imageScaleType(ImageScaleType.IN_SAMPLE_INT).bitmapConfig(Bitmap.Config.RGB_565).delayBeforeLoading(0).build(); File cacheDir = StorageUtils.getCacheDirectory(context); ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).memoryCacheExtraOptions(720, 1280) // default = device screen // dimensions .discCacheExtraOptions(720, 1280, CompressFormat.JPEG, 100).threadPoolSize(3) // default .threadPriority(Thread.NORM_PRIORITY - 1) // default .memoryCacheSize(2 * 1024 * 1024).discCache(new UnlimitedDiscCache(cacheDir)) // default .discCacheSize(50 * 1024 * 1024).discCacheFileCount(100).discCacheFileNameGenerator(new HashCodeFileNameGenerator()) // default .imageDownloader(new BaseImageDownloader(context)) // default .tasksProcessingOrder(QueueProcessingType.FIFO) // default .defaultDisplayImageOptions(options) // default .build(); imageLoader.init(config); } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewholder; View v = convertView; //Asociamos el layout de la lista que hemos creado e incrustamos el ViewHolder if(convertView == null){ LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); //View rowView = inflater.inflate(R.layout.main_list_rowlayout, parent, false); v = inflater.inflate(R.layout.main_list_rowlayout, parent, false); viewholder = new ViewHolder(); viewholder.textView_main_row_title = (TextView) v.findViewById(R.id.textView_main_row_title); viewholder.imageView_restaurant_icon = (ImageView) v.findViewById(R.id.imageView_restaurant_icon); viewholder.textView_main_row_direccion = (TextView) v.findViewById(R.id.textView_main_row_direccion); v.setTag(viewholder); } ImageLoadingListener mImageLoadingListenr = new ImageLoadingListener() { @Override public void onLoadingStarted(String arg0, View arg1) { // Log.e("* started *", String.valueOf("complete")); } @Override public void onLoadingComplete(String arg0, View arg1, Bitmap arg2) { // Log.e("* complete *", String.valueOf("complete")); } @Override public void onLoadingCancelled(String arg0, View arg1) { } @Override public void onLoadingFailed(String arg0, View arg1, FailReason arg2) { // TODO Auto-generated method stub } }; try { viewholder = (ViewHolder) v.getTag(); viewholder.textView_main_row_title.setText(data_array.get(position).getNOMBRE()); viewholder.textView_main_row_direccion.setText(data_array.get(position).getDIRECCION()); String image = data_array.get(position).getURL(); // ------- image --------- try { if (image.length() > 4) imageLoader.displayImage(image, viewholder.imageView_restaurant_icon, options, mImageLoadingListenr); } catch (Exception ex) { } //textView_main_row_title.setText(name); //textView_main_row_address.setText(address); } catch (Exception e) { // TODO: handle exception } return v; } public class ViewHolder { public TextView textView_main_row_title; public TextView textView_main_row_direccion; //public TextView cargo; public ImageView imageView_restaurant_icon; } }

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  • Android save Checkbox State in ListView with Cursor Adapter

    - by Ricardo
    I cant find a way to save the checkbox state when using a Cursor adapter. Everything else works fine but if i click on a checkbox it is repeated when it is recycled. Ive seen examples using array adapters but because of my lack of experience im finding it hard to translate it into using a cursor adapter. Could someone give me an example of how to go about it. Any help appreciated. private class PostImageAdapter extends CursorAdapter { private static final int s = 0; private int layout; Bitmap bm=null; private String PostNumber; TourDbAdapter mDbHelper; public PostImageAdapter (Context context, int layout, Cursor c, String[] from, int[] to, String Postid) { super(context, c); this.layout = layout; PostNumber = Postid; mDbHelper = new TourDbAdapter(context); mDbHelper.open(); } @Override public View newView(Context context, final Cursor c, ViewGroup parent) { ViewHolder holder; LayoutInflater inflater=getLayoutInflater(); View row=inflater.inflate(R.layout.image_post_row, null); holder = new ViewHolder(); holder.Description = (TextView) row.findViewById(R.id.item_desc); holder.cb = (CheckBox) row.findViewById(R.id.item_checkbox); holder.DateTaken = (TextView) row.findViewById(R.id.item_date_taken); holder.Photo = (ImageView) row.findViewById(R.id.item_thumb); row.setTag(holder); int DateCol = c.getColumnIndex(TourDbAdapter.KEY_DATE); String Date = c.getString(DateCol); int DescCol = c.getColumnIndex(TourDbAdapter.KEY_CAPTION); String Description = c.getString(DescCol); int FileNameCol = c.getColumnIndex(TourDbAdapter.KEY_FILENAME); final String FileName = c.getString(FileNameCol); int PostRowCol = c.getColumnIndex(TourDbAdapter.KEY_Post_ID); String RowID = c.getString(PostRowCol); String Path = "sdcard/Tourabout/Thumbs/" + FileName + ".jpg"; Bitmap bm = BitmapFactory.decodeFile(Path, null); holder.Photo.setImageBitmap(bm); holder.DateTaken.setText(Date); holder.Description.setText(Description); holder.cb.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { CheckBox cBox = (CheckBox) v; if (cBox.isChecked()) { mDbHelper.UpdatePostImage(FileName, PostNumber); } else if (!cBox.isChecked()) { mDbHelper.UpdatePostImage(FileName, ""); } } }); return row; }; @Override public void bindView(View row, Context context, final Cursor c) { ViewHolder holder; holder = (ViewHolder) row.getTag(); int DateCol = c.getColumnIndex(TourDbAdapter.KEY_DATE); String Date = c.getString(DateCol); int DescCol = c.getColumnIndex(TourDbAdapter.KEY_CAPTION); String Description = c.getString(DescCol); int FileNameCol = c.getColumnIndex(TourDbAdapter.KEY_FILENAME); final String FileName = c.getString(FileNameCol); int PostRowCol = c.getColumnIndex(TourDbAdapter.KEY_Post_ID); String RowID = c.getString(PostRowCol); String Path = "sdcard/Tourabout/Thumbs/" + FileName + ".jpg"; Bitmap bm = BitmapFactory.decodeFile(Path, null); File x = null; holder.Photo.setImageBitmap(bm); holder.DateTaken.setText(Date); holder.Description.setText(Description); holder.cb.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { CheckBox cBox = (CheckBox) v; if (cBox.isChecked()) { mDbHelper.UpdatePostImage(FileName, PostNumber); } else if (!cBox.isChecked()) { mDbHelper.UpdatePostImage(FileName, ""); } } }); } } static class ViewHolder{ TextView Description; ImageView Photo; CheckBox cb; TextView DateTaken; } }

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