Develop Reference

Android GridView getItem Color

I have a custom GridView populated by array of colors.
Now when I click the item I want to get the color of cell.
I have this code, but when I click the item, get the java.lang.NullPointerException.
public class Colori_picker extends Activity {
private GridView grColori;
private ColorPickerAdapter mAdapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.color_picker);
grColori= (GridView) findViewById(R.id.gridViewColors);
grColori.setAdapter(new ColorPickerAdapter(this));
grColori.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Object color = mAdapter.getItem(position);
finish();
}
});
}
the adapter
public class ColorPickerAdapter extends BaseAdapter {
private Context context;
// list which holds the colors to be displayed
private List<Integer> colorList = new ArrayList<Integer>();
// width of grid column
int colorGridColumnWidth;
public ColorPickerAdapter(Context context) {
this.context = context;
String colors[][] = {
{ "83334C", "B65775", "E07798", "F7A7C0", "FBC8D9", "FCDEE8" },
{ "000000", "434343", "666666", "999999", "CCCCCC", "EFEFEF" } };
colorList = new ArrayList<Integer>();
// add the color array to the list
for (int i = 0; i < colors.length; i++) {
for (int j = 0; j < colors[i].length; j++) {
colorList.add(Color.parseColor("#" + colors[i][j]));
}
}
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(context);
// set the width of each color square
imageView.setLayoutParams(new GridView.LayoutParams(colorGridColumnWidth, colorGridColumnWidth));
} else {
imageView = (ImageView) convertView;
}
imageView.setBackgroundColor(colorList.get(position));
imageView.setId(position);
return imageView;
}
public int getCount() {
return colorList.size();
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
}

What is happening is that you are declaring the instance variable mAdapter but never instantiating it. All you need to do is change this
grColori.setAdapter(new ColorPickerAdapter(this));
To this
mAdapter = new ColorPickerAdapter(this);
grColori.setAdapter(mAdapter);

Highlight effect while pressing item in custom ListView adapter

There's a system visual effect everytime you click a view in Android. In Lollipop it's the ripple effect. When I created a ListView and associated it to an ordinary ArrayAdapter, this effect was present. Now that I've added a custom ListView, this effect is lost.
Now, I've tried to isolate what the problem is, and since using the same list item layout with a default adapter worked nicely, I would say that the problem is on my custom adapter.
I've seen many solutions related to this case that just implemented the ripple effect calling some drawables; this is not what I'm trying to do. The ripple effect shows only because I'm running the app on Android 5, now what I want to do is to have the default system highlight effect for my items when they're being clicked.
Here are the (hopefully) related pieces of my custom adapter:
public class CustomCardSetsAdapter extends BaseAdapter {
List<Card> totalList;
ArrayList<Boolean> hiddenItems;
ListView parentLV;
Integer curPosition = -1;
public static int selectedRowIndex;
public CustomCardSetsAdapter(CardSets cardList, ListView parentListView)
{
this.parentLV = parentListView;
assignSetValues(cardList);
totalList = cardList.getBlackrockMountain();
totalList.addAll(cardList.getClassic());
totalList.addAll(cardList.getCurseofNaxxramas());
totalList.addAll(cardList.getGoblinsvsGnomes());
Collections.sort(totalList,
new Comparator<Card>() {
public int compare(Card f1, Card f2) {
return f1.toString().compareTo(f2.toString());
}
});
hiddenItems = new ArrayList<>();
for (int i = 0; i < totalList.size(); i++) {
if(!totalList.get(i).getCollectible())
hiddenItems.add(true);
else
hiddenItems.add(false);
}
}
#Override
public int getCount() {
return (totalList.size() - getHiddenCount());
}
#Override
public View getView(final int position, View convertView, final ViewGroup parent) {
final int index = getRealPosition(position);
if(convertView == null) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
convertView = inflater.inflate(R.layout.card_list_item, parentLV, false);
}
convertView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Integer prevPosition = curPosition;
curPosition = position;
if(prevPosition >= parentLV.getFirstVisiblePosition() &&
prevPosition <= parentLV.getLastVisiblePosition())
{
View view = parentLV.getChildAt(prevPosition- parentLV.getFirstVisiblePosition());
parentLV.getAdapter().getView(prevPosition,view, parentLV);
}
v.setBackgroundColor(Color.WHITE);
}
});
Card curCard = totalList.get(index);
TextView cardName = (TextView) convertView.findViewById(R.id.cardName);
cardName.setText(curCard.getName());
setRarityColor(curCard,cardName);
TextView manaCost = (TextView) convertView.findViewById(R.id.manaCost);
manaCost.setText((curCard.getCost()).toString());
ImageView setIcon = (ImageView) convertView.findViewById(R.id.setIcon);
setSetIcon(curCard,setIcon);
if(position == curPosition)
convertView.setBackgroundColor(Color.WHITE);
else
convertView.setBackgroundColor(Color.TRANSPARENT);
return convertView;
}
#Override
public int getItemViewType(int position) {
return R.layout.card_list_item;
}
#Override
public int getViewTypeCount() {
return 1;
}
#Override
public boolean isEmpty() {
return false;
}
private int getHiddenCount()
{
int count = 0;
for(int i = 0;i <totalList.size();i++)
if(hiddenItems.get(i))
count++;
return count;
}
private int getRealPosition(int position) {
int hElements = getHiddenCountUpTo(position);
int diff = 0;
for(int i=0;i<hElements;i++) {
diff++;
if(hiddenItems.get(position+diff))
i--;
}
return (position + diff);
}
private int getHiddenCountUpTo(int location) {
int count = 0;
for(int i=0;i<=location;i++) {
if(hiddenItems.get(i))
count++;
}
return count;
}
}
Thanks in advance.

in your ListView XML, add:
android:drawSelectorOnTop="true"
I also think you are using your adapter wrong...
Use the ViewHolder Pattern on your Adapter:
public class CustomCardSetsAdapter extends BaseAdapter {
List<Card> totalList;
ArrayList<Boolean> hiddenItems;
ListView parentLV;
Integer curPosition = -1;
public static int selectedRowIndex;
private class ViewHolderRow{
TextView cardName;
TextView manaCost;
ImageView setIcon;
}
public CustomCardSetsAdapter(CardSets cardList, ListView parentListView)
{
this.parentLV = parentListView;
assignSetValues(cardList);
totalList = cardList.getBlackrockMountain();
totalList.addAll(cardList.getClassic());
totalList.addAll(cardList.getCurseofNaxxramas());
totalList.addAll(cardList.getGoblinsvsGnomes());
Collections.sort(totalList,
new Comparator<Card>() {
public int compare(Card f1, Card f2) {
return f1.toString().compareTo(f2.toString());
}
});
hiddenItems = new ArrayList<>();
for (int i = 0; i < totalList.size(); i++) {
if(!totalList.get(i).getCollectible())
hiddenItems.add(true);
else
hiddenItems.add(false);
}
}
#Override
public int getCount() {
return (totalList.size() - getHiddenCount());
}
#Override
public View getView(final int position, View convertView, final ViewGroup parent) {
final int index = getRealPosition(position);
ViewHolderRow theRow;
if(convertView == null) {
theRow = new ViewHolderRow();
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
convertView = inflater.inflate(R.layout.card_list_item, parentLV, false);
// Cache your views
theRow.cardName = (TextView) convertView.findViewById(R.id.cardName);
theRow.manaCost = (TextView) convertView.findViewById(R.id.manaCost);
theRow.setIcon = (ImageView) convertView.findViewById(R.id.setIcon);
// Set the Tag to the ViewHolderRow
convertView.setTag(theRow);
}else{
// get the Row to re-use
theRow = (ViewHolderRow) convertView.getTag();
}
//... Removed convertView.setOnClickListener
Card curCard = totalList.get(index);
// Set Items
theRow.cardName.setText(curCard.getName());
setRarityColor(curCard,theRow.cardName);
theRow.manaCost.setText((curCard.getCost()).toString());
setSetIcon(curCard,theRow.setIcon);
if(position == curPosition){
convertView.setBackgroundColor(Color.WHITE);
}else{
convertView.setBackgroundColor(Color.TRANSPARENT);
}
return convertView;
}
#Override
public int getItemViewType(int position) {
return R.layout.card_list_item;
}
#Override
public int getViewTypeCount() {
return 1;
}
#Override
public boolean isEmpty() {
return false;
}
private int getHiddenCount()
{
int count = 0;
for(int i = 0;i <totalList.size();i++)
if(hiddenItems.get(i))
count++;
return count;
}
private int getRealPosition(int position) {
int hElements = getHiddenCountUpTo(position);
int diff = 0;
for(int i=0;i<hElements;i++) {
diff++;
if(hiddenItems.get(position+diff))
i--;
}
return (position + diff);
}
private int getHiddenCountUpTo(int location) {
int count = 0;
for(int i=0;i<=location;i++) {
if(hiddenItems.get(i))
count++;
}
return count;
}
}
Set an onListItemClickListener instead of using this on the entire convertView...
yourListView.setOnItemClickListener(ListListener);
private final OnItemClickListener ListListener = new OnItemClickListener{
#Override
public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) {
// ... Do something on click
}
}

android - How to check how many elements are present in a GridView?

I am dynamically adding images to a GridView.
I want to have a counter to check how many images are present in a GridView.
The purpose is to restrict the user to add maximum of "n" images.
Therefore I want to have a counter which will count this number and I will check accordingly.
public class ExistingDetailedActivity extends Activity {
public String images,audiopath,name,assignedTo;
TextView ringtonename,assigned;
public GridView gridView;
public String [] imgpath;
CustomBaseExistAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_existing_detailed);
Intent i = getIntent();
if(i.hasExtra("BNDL")){
Bundle bdl = getIntent().getBundleExtra("BNDL");
if(bdl.get("IMAGEPATH") != null){
images = bdl.getString("IMAGEPATH");
}
if(bdl.get("AUDIOPATH") != null){
audiopath = bdl.getString("AUDIOPATH");
}
if(bdl.get("RINGTONENAME") != null){
name = bdl.getString("RINGTONENAME");
}
if(bdl.get("ASSIGNEDTO") != null){
assignedTo = bdl.getString("ASSIGNEDTO");
}
}
Typeface FONT_NAME = Typeface.createFromAsset(this.getAssets(), "komika-title-brush-1361511399.ttf");
imgpath=images.split("\\*") ;
ringtonename=(TextView) findViewById(R.id.textView2);
ringtonename.setText(name);
ringtonename.setTypeface(null, Typeface.BOLD);
ringtonename.setTypeface(FONT_NAME);
assigned=(TextView) findViewById(R.id.textView4);
assigned.setText(assignedTo);
assigned.setTypeface(null, Typeface.BOLD);
assigned.setTypeface(FONT_NAME);
gridView=(GridView) findViewById(R.id.gridview1);
adapter = new CustomBaseExistAdapter(this,imgpath);
//adapter.notifyDataSetChanged();
gridView.invalidateViews();
gridView.setAdapter(adapter);
}
}
Another one is
public class CustomBaseExistAdapter extends BaseAdapter{
private final Activity context;
public String[] imagepath;
private String[] imagepath1=null;
private String[] imagepathBackUp=null;
public CustomBaseExistAdapter(Activity context,
String[] imagepath) {
this.context = context;
this.imagepath = imagepath;
this.imagepathBackUp =imagepath;
List<String> nonBlank = new ArrayList<String>();
for(String s: imagepath) {
if (!s.trim().isEmpty()) {
nonBlank.add(s);
}
}
imagepath1 = (String[]) nonBlank.toArray( new String[nonBlank.size()] );
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return imagepath.length;
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public int getViewTypeCount() {
return 1;
}
#Override
public int getItemViewType(int position) {
return 0;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
convertView = null;
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.custom_image_with_checkbox, null);
CheckBox cb=(CheckBox) convertView.findViewById(R.id.checkBox1);
final ImageView imageView = (ImageView) convertView.findViewById(R.id.imgThumb);
cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
int id = buttonView.getId();
if(isChecked){
/*String newList[] = new String[imagepath.length - 1];
int count = 0;
for (int i = 0; i < imagepath.length; i++) {
if (imagepath.length - 1 > 0) {
if (imagepath[i] == imagepath1[position]) { // itemPath[1] as the range starts from 0, so 1 would be ITEM2
// SKIP IF MATCHES THE ITEM YO WANT TO REMOVE
} else {
newList[count] = imagepath[i];
count++;
}
}
}
imagepath=new String[newList.length];
imagepath= newList;*/
List<String> newlist= new ArrayList<String>(Arrays.asList(imagepath));
newlist.remove(imagepath1[position]);
imagepath=null;
imagepath = newlist.toArray(new String[newlist.size()]);
/*new String[newlist.size()];
for(int j =0;j<newlist.size();j++){
imagepath[j] = newlist.get(j);
}*/
notifyDataSetChanged();
}
}
});
imageView.setImageBitmap(BitmapFactory.decodeFile(imagepath[position]));
}
return convertView;
}
}

To know number of Elements in GridView, here ,
put int count = (position + 1); in your GridView Adapter getView(..) method. It is callback method, called number of times to populate your Gridview. Starts from 0.
int count = 0; // define count as global instance var.
public View getView(final int position, View convertView, ViewGroup parent){
...
count = position + 1;
...
}
count is what you want.

Adding a new row dynamically using a button

I am trying to add rows in a list view when a button is clicked , but my application is getting crashed everytime .
Here is my code :
public class MTCRichGraphicsActivity extends Activity {
int ELEMENT_COUNT = 3;
int position=0;
Button bAddView;
String[] elements = new String[ELEMENT_COUNT];
int r =0 ;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bAddView = (Button) findViewById(R.id.bNewEvent);
final ListView list = (ListView) findViewById(R.id.list3d);
bAddView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId())
{
case R.id.bNewEvent :
for (int i = 0; i< ELEMENT_COUNT; i++) {
elements[i] = String.valueOf(i);
}
final MyAdapter adapter = new MyAdapter(MTCRichGraphicsActivity.this,elements);
adapter.notifyDataSetChanged();
//list.setScrollY(currentPosition);
//list.setTranslationY(currentPosition);
list.setDivider( null );
list.setAdapter(adapter);
adapter.notifyDataSetChanged();
ELEMENT_COUNT = ELEMENT_COUNT + 3;
}
}
});
}
}
Here I want to add 3 rows everytime a button(i.e. bNewEvent) is clicked , so I am incrementing ELEMENT_COUNT by 3 everytime. It works fine for first time , but when I press button second time it crashes.
Here is my adapter class :
public class MyAdapter extends BaseAdapter {
private final LayoutInflater mInflater;
private final String[] mItems;
TextView t;
ViewHolder holder;
public MyAdapter(Activity c,String[] objects) {
mInflater = c.getLayoutInflater();
mItems = objects;
}
public int getCount() {
return mItems.length;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView t;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.listitem2, parent,false);
}
holder = new ViewHolder();
holder.t1 = (TextView) convertView.findViewById(R.id.tv1);
holder.t2 = (TextView) convertView.findViewById(R.id.tv2);
holder.t3 = (TextView) convertView.findViewById(R.id.tv3);
holder.t4 = (TextView) convertView.findViewById(R.id.tv4);
holder.t1.setText("Title"+position);
position = position + 3;
//((ImageView)convertView).setTextAlignment(1);
return convertView;
}
#Override
public Object getItem(int position) {
return mItems[position];
}
#Override
public long getItemId(int position) {
return position;
}
}

you can't use an array like this..
String[] elements = new String[ELEMENT_COUNT];
causes the array to have the same number of elements as the initial value of ELEMENT_COUNT, you can't then just increment ELEMENT_COUNT by 3 and try
for (int i = 0; i< ELEMENT_COUNT; i++) {
elements[i] = String.valueOf(i);
}
as the array only contains as many elements are initially defined. You need to change 'elements' to an ArrayList.
ArrayList<string> elements;

U define
int ELEMENT_COUNT = 3;
String[] elements = new String[ELEMENT_COUNT];
But u can't Resize Array
for (int i = 0; i< ELEMENT_COUNT; i++) {
elements[i] = String.valueOf(i);
}
this So u got Exception
Change Array To List
Like
List<String> element =new ArrayList<String>();
for (int i = 0; i< ELEMENT_COUNT; i++) {
element.add("String.valueOf(i)")
}
and Change Adapter also Like This

Display images in grid view of View pager

I am working on image gallery for which i have made use of ViewPager addon api. I am loading images from a specific folder in sdcard. My goal is to display only 9 images per screen in ViewPager, which i am not able to achieve. The below code is the mainactivity.
public class AndroidSwipeGalleryActivity extends Activity {
private int size;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.image_gallery);
File file = new File(Environment.getExternalStorageDirectory()+"/xxxxxxx/images");
if (file.exists()) {
size = file.listFiles().length;
System.out.println("=====File exists====Length is====="+size);
double quo = (double)size/9;
System.out.println("====Dividing by 9====" + quo);
size = (int) Math.ceil(quo);
System.out.println("===Math===== "+size);
} else {
System.out.println("======File does not exists====");
}
MyPagerAdapter adapter = new MyPagerAdapter(this);
adapter.setScrCount(size);
ViewPager myPager = (ViewPager) findViewById(R.id.viewpager);
myPager.setAdapter(adapter);
myPager.setCurrentItem(0);
}
}
The Pager Adapter and Image adapter are in the below class:
public class MyPagerAdapter extends PagerAdapter {
private TextView tv;
private GridView gv;
private int scrCount;
private int count;
public int imageCount;
private Cursor cursor;
private int columnIndex;
private Activity act;
public MyPagerAdapter(Activity act) {
this.act = act;
}
public int getCount() {
return getScrCount();
}
public Object instantiateItem(View collection, int position) {
// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Create the cursor pointing to the SDCard
String uri = MediaStore.Images.Media.DATA;
String condition = uri + " like '%/beverlyhills/images%'";
cursor = act.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, condition, null, null);
count = cursor.getCount();
System.out.println("Cursor count::::"+count);
// Get the column index of the Thumbnails Image ID
columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);
// ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
LayoutInflater inflater = (LayoutInflater) collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
int resId = 0;
for (int i = 0; i < getScrCount() ; i++) {
if (count > 9) {
if (position == i) {
int num = 0;
num = count - 9;
count = num;
imageCount = 9;
}
} else {
imageCount = count;
}
}
resId = R.layout.number_one;
View view = inflater.inflate(resId, null);
((ViewPager) collection).addView(view, 0);
tv = (TextView) collection.findViewById(R.id.swipeTitleTextView);
tv.setText("Swipe Gallery");
gv = (GridView) collection.findViewById(R.id.galleryGridView);
ImageAdapter imageAdapter = new ImageAdapter(collection.getContext(), imageCount);
gv.setAdapter(imageAdapter);
// Set up a click listener
gv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(#SuppressWarnings("rawtypes") AdapterView parent, View v, int position, long id) {
// Get the data location of the image
String[] projection = {MediaStore.Images.Media.DATA};
cursor = act.managedQuery( MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
projection, // Which columns to return
null, // Return all rows
null,
null);
columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToPosition(position);
// Get image filename
String imagePath = cursor.getString(columnIndex);
// Use this path to do further processing, i.e. full screen display
System.out.println("=====Image Path:::::"+imagePath);
}
});
return view;
}
#Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
#Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
#Override
public Parcelable saveState() {
return null;
}
#Override
public void finishUpdate(View arg0) {
// TODO Auto-generated method stub
}
#Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
// TODO Auto-generated method stub
}
#Override
public void startUpdate(View arg0) {
// TODO Auto-generated method stub
}
public int getScrCount() {
return scrCount;
}
public void setScrCount(int scrCount) {
this.scrCount = scrCount;
}
private class ImageAdapter extends BaseAdapter {
private int count;
public ImageAdapter(Context ctx, int count) {
this.count = count;
}
#Override
public int getCount() {
return count;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView picturesView;
if (convertView == null) {
picturesView = new ImageView(act);
// Move cursor to current position
cursor.moveToPosition(position);
// Get the current value for the requested column
int imageID = cursor.getInt(columnIndex);
// Set the content of the image based on the provided URI
picturesView.setImageURI(Uri.withAppendedPath(
MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, "" + imageID));
picturesView.setScaleType(ImageView.ScaleType.FIT_CENTER);
picturesView.setPadding(8, 8, 8, 8);
picturesView.setLayoutParams(new GridView.LayoutParams(100, 100));
}
else {
picturesView = (ImageView)convertView;
}
return picturesView;
}
}
}
The problem is I am able to load the images and display them on screen but not able to display exactly 9 images per screen. Please go through the code, it's not complex.

i have create the other demo example of view pager to manage the page and also load images. follow the steps wise, its perfectly works..
its a Pager adapter and mDataHolder(List of images) and
Set the property of gridview android:numColumns="3"
private int size;
private int start;
private int end;
private int MATRIX = 9;
public int getCount() {
int size = 0;
if (mDataHolder != null)
modular = mDataHolder.get_Listholder().size() % MATRIX;
if (modular != 0)
size++;
return ((mDataHolder.get_Listholder().size()) / MATRIX) + size;
}
#Override
public Object instantiateItem(ViewGroup container, final int pageIndex) {
mRelativeLayoutInflater = (RelativeLayout) mMasterFragmentActivity.getLayoutInflater().inflate(R.layout.member_pager_adapter, container, false);
mGridView = (GridView) mRelativeLayoutInflater.findViewById(R.id.member_gridView_list);
Calculation of pages<
size = MATRIX;
start = pageIndex * MATRIX;
end = 0;
int temp = 0;
if ((start + MATRIX) < mDataHolder.get_Listholder().size()) {
end = start + MATRIX;
} else {
temp = mDataHolder.get_Listholder().size() - start;
end = start + temp;
size = temp;
}
... and then pass the variable to gridview adapter to set other content in pager.
mAdapterMember = new AdapterMember(mContext, start, end, size);
mGridView.setAdapter(mAdapterMember);
((ViewPager) container).addView(mRelativeLayoutInflater);
return mRelativeLayoutInflater;
}
Below Manage pages variables also use the Gridview adapter to set the postion.
when the set page content position to be like (start + position)
private class AdapterMember extends BaseAdapter {
private ViewHolder mViewHolder;
private Context mContext;
private int start;
private int end;
private int size;
private AdapterMember(Context mContext, int start, int end, int size) {
this.mContext = mContext;
this.start = start;
this.end = end;
this.size = size;
}
#Override
public int getCount() {
if (size > 0)
return size;
else
return 0;
}
#Override
public Object getItem(int position) {
if (mMemberListVO.getMember().size() > 0)
return mMemberListVO.getMember().get(position);
else
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = ((Activity) mContext).getLayoutInflater().inflate(R.layout.row_member_list, null);
mViewHolder = new ViewHolder();
mViewHolder.mImageViewMemberPhoto = (NetworkImageView) convertView .findViewById(R.id.row_member_list_imageView_person);
mViewHolder.mTextViewMemberName = (TextView) convertView .findViewById(R.id.row_member_list_textview_person_name);
mViewHolder.mTextViewMemberDesignation = (TextView) convertView .findViewById(R.id.row_member_list_textview_person_designation);
mViewHolder.mTextViewMemberAddress = (TextView) convertView .findViewById(R.id.row_member_list_textview_person_address);
mViewHolder.mTextViewMemberNotification = (TextView) convertView .findViewById(R.id.row_member_list_imageview_msg_notification);
convertView.setTag(mViewHolder);
} else {
mViewHolder = (ViewHolder) convertView.getTag();
}
mViewHolder.mTextViewMemberName.setText(mDataHolder.get_Listholder().get(start + position) .get(DBHelper.mFieldMember_First_Name)
+ getString(R.string.double_quate_with_space)
+ mDataHolder.get_Listholder(). get(start + position).get(DBHelper.mFieldMember_Last_Name));
mViewHolder.mTextViewMemberDesignation.setText(mDataHolder.get_Listholder().get(start + position)
.get(DBHelper.mFieldMember_Occupation));
mViewHolder.mTextViewMemberAddress.setText(mDataHolder.get_Listholder().get(start + position) .get(DBHelper.mFieldMember_Block_No)
+ "," + getString(R.string.double_quate_with_space)
+ mDataHolder.get_Listholder().get(start + position).get(DBHelper.mFieldMember_House_No) + ","
+ getString(R.string.double_quate_with_space)
+ mDataHolder.get_Listholder().get(start + position).get(DBHelper.mFieldMember_Home_Address) + ".");
return convertView;
}
private class ViewHolder {
private NetworkImageView mImageViewMemberPhoto;
private TextView mTextViewMemberName, mTextViewMemberDesignation, mTextViewMemberAddress,
mTextViewMemberNotification;
}
}
its perfectly Working with your requirement...
The problem is solve to load the images and display them on screen its display exactly 9 images per screen.