I am trying to get photos from the server into the gridview, everything looks ok however no images are coming and no error message, below is the custom adapter java file. What is wrong with the codes?
public class PhotoAdapter extends ArrayAdapter<PhotosActivity.Photos>{
ArrayList<PhotosActivity.Photos> photoList;
LayoutInflater vi;
int Resource;
ViewHolder holder;
public PhotoAdapter(Context context, int resource, ArrayList<PhotosActivity.Photos> objects) {
super(context, resource, objects);
vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Resource = resource;
photoList = objects;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
holder = new ViewHolder();
v = vi.inflate(Resource, null);
holder.image = (ImageView) v.findViewById(R.id.grid_item_image);
v.setTag(holder);
} else {
holder = (ViewHolder) v.getTag();
}
Picasso.with(v.getContext()).load(photoList.get(position).getImage()).into(holder.image);
return v;
}
static class ViewHolder {
public ImageView image;
}
}
Actually my codes are working fine. It was my mistake, I didn't set the linear layout correctly, that's why the gridview goes off the screen.
Related
This is the code of MyPageAdapter
public class MyPageAdapter extends PagerAdapter {
int[] images = {R.drawable.img1, R.drawable.img2, R.drawable.img3, R.drawable.img4, R.drawable.img5, R.drawable.img6, R.drawable.img7, R.drawable.img8, R.drawable.img9, R.drawable.img10, R.drawable.img11, R.drawable.img12, R.drawable.img13
, R.drawable.img14, R.drawable.img15, R.drawable.img16, R.drawable.img17, R.drawable.img18, R.drawable.img19, R.drawable.img20, R.drawable.img21, R.drawable.img22, R.drawable.img23, R.drawable.img24
, R.drawable.img25, R.drawable.img26, R.drawable.img27, R.drawable.img28, R.drawable.img29, R.drawable.img30};
private LayoutInflater inflater;
private Context context;
public MyPageAdapter(Context context){
this.context = context;
}
#Override
public int getCount() {
return images.length;
}
#Override
public boolean isViewFromObject(#NonNull View view, #NonNull Object object) {
return view == ((LinearLayout)object);
}
#Override
public Object instantiateItem(ViewGroup container, int position) {
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.fragment_slideshow, container, false);
EditText editText = v.findViewById(R.id.editTextNumberDecimal);
ImageView imageView = (ImageView)v.findViewById(R.id.imageView2);
imageView.setImageResource(images[position]);
int text = position+1;
editText.setText(text);
container.addView(v);
return v;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.invalidate();
}
}
AND this is the code of SlideshowFragment.
public class SlideshowFragment extends Fragment {
public View onCreateView(#NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_slideshow, container, false);
ViewPager2 viewPager2 = (ViewPager2) root.findViewById(R.id.pager);
MyPageAdapter adapter = new MyPageAdapter(this);
viewPager2.setAdapter(adapter);
return root;
}
}
I would like to add a view pager to the slide fragment so that 30 photos can be viewed as a slide show.
But I can't do setAdapter in viewpager.
Really, is there anything other than a way to make and put each fragment for each of the 30 pictures?
Please let me know how to modify my code.
You are mixing Viewpager and Viewpager2 these are implemented in 2 totally different ways.
try
ViewPager viewPager = (ViewPager) root.findViewById(R.id.pager);
MyPageAdapter adapter = new MyPageAdapter(this);
viewPager.setAdapter(adapter);
and change your xml to also be a ViewPager widget.
Alternatively you could probably change your adapter to a RecyclerView.Adapter https://developer.android.com/reference/androidx/recyclerview/widget/RecyclerView.Adapter
As Viewpager2 is just a customised RecyclerView.
Here I'm using Custom Adapter by implementing listAdapter to Support buttons in the list items. When i click the Delete button it deletes currect row. But i can't able to refresh this listView.
File Structure is MainActivity -> FragmentClass-> this Custom class for the listAdpater.
public class Category_ListView_Custom_Adapter extends BaseAdapter implements ListAdapter{
private Realm realm;
private ArrayList<String> list = new ArrayList<>();
private Context context;
public Category_ListView_Custom_Adapter(ArrayList<String> list, Context context){
this.list = list;
this.context = context;
}
#Override
public int getCount() {
return list.size();
}
#Override
public Object getItem(int i) {
return list.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(final int i, View view, ViewGroup viewGroup) {
View view1 = view;
realm = Realm.getDefaultInstance();
if(view == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.category_listview_row, null);
}
TextView listItemText = (TextView) view.findViewById(R.id.item);
listItemText.setText(list.get(i));
ImageView edit = (ImageView) view.findViewById(R.id.image);
ImageView delete = (ImageView) view.findViewById(R.id.delete);
edit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// list.remove(i);
/// Toast.makeText(view.getContext(), "hey "+list.get(i).toString(), Toast.LENGTH_SHORT).show();
// notifyDataSetChanged();
Intent intent = new Intent(context, AddCategory.class);
intent.putExtra("category","expense");
intent.putExtra("subcategory", list.get(i));
context.startActivity(intent);
}
});
delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
RealmResults<Category> categorylist = realm.where(Category.class).equalTo("Id",i+1).and().equalTo("Subcategory",list.get(i)).findAll();
for (Category category : categorylist) {
realm.beginTransaction();
categorylist.deleteFirstFromRealm();
realm.commitTransaction();
try {
context.notifyAll();
}catch (Exception e){
Toast.makeText(context, e.toString(), Toast.LENGTH_SHORT).show();
}
// Expense.call_resume
}
}
});
return view;
}
}
Please Help me. Thank you.
You are .removing from a wrong view. Try to make root List<> static and do Class.list.get(i).remove or something like that.
Also, try to hide a view inside your get view.
when i run my app, i get much more radiobuttons than i need. It seems the radiobuttons repeat themselves in the same group. I don't really understand what is is going on. Here is my custom ArrayAdapter. I would like to know the problem here
public class QuestionsListAdapter extends ArrayAdapter<QuestionProperties> {
List<QuestionProperties> list;
Context test;
public QuestionsListAdapter(Context context, int resource, List<QuestionProperties> list2) {
super(context,resource,list2);
test = context;
list =list2;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
final RadioButton[] rB;
RadioHolder holder = new RadioHolder();
view= convertView;
LinearLayout.LayoutParams layoutParams = new RadioGroup.LayoutParams(
RadioGroup.LayoutParams.WRAP_CONTENT,
RadioGroup.LayoutParams.WRAP_CONTENT);
if(view == null)
{
LayoutInflater inflator = ((Activity) test).getLayoutInflater();
view = inflator.inflate(R.layout.question_list_row, null);
holder.questionTV = (TextView) view.findViewById(R.id.qTextView);
holder.radiogroup = (RadioGroup) view.findViewById(R.id.radio_group);
view.setTag(holder);
}
else{
//view = convertView;
holder = (RadioHolder) view.getTag();
}
holder.questionTV.setText(String.valueOf(list.get(position).getQuestionNo())+"."+" " + list.get(position).getQuestion());
rB=new RadioButton[list.get(position).possibleAns.length];
for(int count = 0; count<(list.get(position).possibleAns.length);count++)
{
rB[count]= new RadioButton(test);
rB[count].setId(count);
rB[count].setText(list.get(position).possibleAns[count]);
layoutParams.weight=1.0f;
layoutParams.setMargins(15, 0, 5, 10);
rB[count].setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
String a = String.valueOf(v.getId());
Toast.makeText(QActivity.context, "Radio Button "+ a,Toast.LENGTH_SHORT).show();
}
});
holder.radiogroup.addView(rB[count],layoutParams);
}
return view;
}
static class RadioHolder {
protected TextView questionTV;
protected RadioGroup radiogroup;
}
Finally after some hacks i solved it! i removed all the radio buttons in the else clause.
The solution..
public class QuestionsListAdapter extends ArrayAdapter<QuestionProperties> {
List<QuestionProperties> list;
RadioButton rB;
Context test;
RadioHolder holder;
String chkBtn;
LinearLayout.LayoutParams layoutParams = new RadioGroup.LayoutParams(
RadioGroup.LayoutParams.WRAP_CONTENT,
RadioGroup.LayoutParams.WRAP_CONTENT);
public QuestionsListAdapter(Context context, int resource, List<QuestionProperties> list2) {
super(context,resource,list2);
test = context;
list =list2;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
holder = new RadioHolder();
view= convertView;
Log.v("ConvertView", String.valueOf(position));
if(view == null)
{
LayoutInflater inflator = ((Activity) test).getLayoutInflater();
view = inflator.inflate(R.layout.question_list_row, parent,false);
holder.questionTV = (TextView) view.findViewById(R.id.qTextView);
holder.radiogroup = (RadioGroup) view.findViewById(R.id.radio_group);
//holder.radiogroup.check(list.get(position).getSelectedAns());
view.setTag(holder);
//((RadioHolder) view.getTag()).radiogroup.setTag(list.get(position));
Log.v("holder setTag", String.valueOf(position));
}
else{
view = convertView;
holder = (RadioHolder)view.getTag();
//((RadioHolder)view.getTag()).radiogroup.getTag();
holder.radiogroup.removeAllViews();
}
holder.questionTV.setText(String.valueOf(list.get(position).getQuestionNo())+"."+" " + list.get(position).getQuestion());
configureRadioButtons(position);
chkBtn = String.valueOf(list.get(position).getSelectedAns());
holder.radiogroup.check(Integer.valueOf(chkBtn));
return view;
}
static class RadioHolder {
protected TextView questionTV;
protected RadioGroup radiogroup;
}
public void configureRadioButtons(int pos){
final int position = pos;
//rB=new RadioButton(test);
for(int count = 0; count<(list.get(position).possibleAns.length);count++)
{
rB= new RadioButton(test);
rB.setId(count);
rB.setText(list.get(position).possibleAns[count]);
layoutParams.weight=1.0f;
layoutParams.setMargins(15, 0, 5, 10);
holder.radiogroup.addView(rB,layoutParams);
rB.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
String a = String.valueOf(v.getId());
list.get(position).setSelectedAns(v.getId());
chkBtn = String.valueOf(list.get(position).getSelectedAns());
Toast.makeText(QActivity.context, "Radio Button "+ a,Toast.LENGTH_SHORT).show();
}
});
rB.setOnCheckedChangeListener(new OnCheckedChangeListener(){
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
}
});
holder.radiogroup.clearCheck();
Log.v("rB added to radiogroup", String.valueOf(position));
}
}
I have a custom listView which contains images and text views. But in getView method, application got crashed.
My code:
#Override
public View getView(final int position, View view, ViewGroup parent) {
if (view == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(layout, null);
}
ImageView removeWatch = (ImageView) view.findViewById(R.id.remove_watch);
removeWatch.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
Log.d("BEFOERE","on click in menuwatchadapter");
}
});
ArrayAdpter :
public class MenuListAdapter extends ArrayAdapter<MenuListModel> {
private Context context;
private int layout;
private List<MenuListModel> Model;
public interface ModelAction {
public void removedModel(MenuListModel removedModel);
}
private ModelAction ModelActions;
public MenuListAdapter(Context context, int resource,
List<MenuListModel> objects, ModelAction ModelActionListener) {
super(context, resource, objects);
this.context = context;
this.layout = resource;
this.Model = objects;
this.ModelActions = ModelActionListener;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(layout, null);
}
ImageView remove = (ImageView) view.findViewById(R.id.remove);
remove.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
Log.d("TEST","CLICKED");
}
});
return view;
}
}
At line removeWatch.setOnClickListener, application got crashed.
Can anyone tell me what can be the issue ?
NOTE : I am using Android-Studio.
LOGCAT :
-13 15:01:25.502 28351-28351/com.example.watch E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.watch, PID: 28351
java.lang.NoClassDefFoundError: com.example.watch.adapter.MenuWatchListAdapter$1
at com.example.watch.adapter.MenuWatchListAdapter.getView(MenuWatchListAdapter.java:95)
at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:220)
at android.widget.AbsListView.obtainView(AbsListView.java:2255)
at android.widget.ListView.makeAndAddView(ListView.java:1790)
at android.widget.ListView.fillSpecific(ListView.java:1337)
at android.widget.ListView.layoutChildren(ListView.java:1620)
at android.widget.AbsListView.onLayout(AbsListView.java:2087)
at android.view.View.layout(View.java:14948)
at android.view.ViewGroup.layout(ViewGroup.java:4631)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14948)
at android.view.ViewGroup.layout(ViewGroup.java:4631)
Change this line view = inflater.inflate(layout, null) to
view = inflater.inflate(R.layout.Your_LAYOUT, null) and give it a try.
I do not know why but i have unistalled whole android-studio and android sdk and re-install it and this is now working.
i m trying giving integer value image using in gridview.bt i couldnt get .
this is my values/string.xml
<integer-array name="anim">
<item >#drawable/goat1</item>
<item >#drawable/lamb1</item>
<item>#drawable/bear</item>
<item>#drawable/lion</item>
</integer-array>
this is my java code:
public class GridViewActivity extends Activity {
**int[] anim=getResources().getIntArray(R.array.anim);**
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));
}
}
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(anim[position]);
return imageView;
}
use TypedArray,
TypedArray icons;
Resources res = getResources();
icons = res.obtainTypedArray(R.array.img);
Then in image adapter, instead of imageView.setImageResource(anim[position]); :
Drawable drawable = icons.getDrawable(position);
imageview.setImageDrawable(drawable);