I have set up a GridView Successfully, however I want to be able to change the Images within the the GridView dependent upon a variable. For example:
int a = 2
if (a == 2){
Integer[] images = {
R.drawable.image1
R.drawable.image3
}
} else {
Integer[] images = (
R.drawable.image2
R.drawable.image4
}
}
However I can't find a way to do this. The code I am working with at the moment is:
GridView cardList = (GridView) findViewById(R.id.cardList);
cardList.setAdapter(new ImageAdapter(this));
cardList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(Create.this, "" + position,
Toast.LENGTH_SHORT).show();
}
});
}
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return images.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) {
// if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(215, 215));
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(images[position]);
return imageView;
}
private Integer[] images = {
R.drawable.iamge1, R.drawable.image2
};
}
Try something like this:
The activity:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridView = (GridView) findViewById(R.id.gridView);
int images[] = {R.drawable.ic_action_name};
ImageAdapter imageAdapter = new ImageAdapter(getApplicationContext(),images);
gridView.setAdapter(imageAdapter);
}
}
Your adapter class:
public class ImageAdapter extends BaseAdapter {
private int images[];
Context context;
public ImageAdapter(Context context, int images[]){
this.context = context;
this.images = images;
}
private class Holder{
ImageView imageView;
}
#Override
public int getCount(){
return images.length;
}
#Override public Object getItem(int position){
return null;
}
#Override
public long getItemId(int position){
return 0;
}
#Override
public View getView(final int position, View view, ViewGroup parent){
//All of this Holder stuff is so that the View doesn't jump around wildly
final Holder holder;
LayoutInflater inflater;
if (view == null){
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.singleimage,null);
holder = new Holder();
holder.imageView = (ImageView) view.findViewById(R.id.singleImage);
view.setTag(holder);
}
else {
holder = (Holder) view.getTag();}
holder.imageView.setImageResource(images[position]);
return view;
}
}
You also need a simple xml file for the single image in the gridView. Name this "singleimage.xml"
<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/singleImage"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
Activity xml file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.ri.emily.testapp.MainActivity">
<GridView
android:layout_width="match_parent"
android:id="#+id/gridView"
android:layout_height="match_parent" />
</RelativeLayout>
Related
I'm trying to implement a selection activity for a given list of items. Each item is checkable, so I have an item with a TextView and a CheckBox. I implemented a ListView for displaying all the options and a Spinner for showing only the "Top Ten" choices, as a subset of the same list. For now I'm showing all the items in both ListView and Spinner.
I want for the items in the ListView to update when the user selects an item in the Spinner (Note: The reverse path works fine, as the Spinner grabs the updated ArrayList each time it dropsdown).
I tried to implement setOnItemSelectedListener for my Spinner, and to call notifyOnDataSetChanged() for my ListViewAdapter inside the Listener. But the Listener is only called on collapse and I get a weird (maybe unrelated) warning message.
The onItemSelectedListener for the Spinner only runs when the Spinner gets collapsed. But notifyOnDataSetChanged() seems to ignore the checked status of the items as a change. How can I make the first option run everytime I check an item and have the change get properly received by the ListAdapter?
Here's the Activity.java code:
public class TriageReasonActivity extends BaseActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_triage_reason);
final String[] select_qualification = {
"Select Qualification", "10th / Below", "12th", "Diploma", "UG",
"PG", "Phd"};
Spinner spinner = (Spinner) findViewById(R.id.top_reasons_spinner);
ListView symptoms_list = (ListView) findViewById(R.id.view_list_symptoms);
ArrayList<Symptoms> listVOs = new ArrayList<>();
for (int i = 0; i < select_qualification.length; i++) {
Symptoms reason = new Symptoms();
reason.setTitle(select_qualification[i]);
reason.setSelected(false);
listVOs.add(reason);
}
SymptomsListAdapter mListAdapter = new SymptomsListAdapter(this, 0,
listVOs);
SymptomsSpinnerAdapter mSpinnerAdapter = new SymptomsSpinnerAdapter(this, 0,
listVOs);
symptoms_list.setAdapter(mListAdapter);
spinner.setAdapter(mSpinnerAdapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
Log.i("Item selected", "but not cahnged");
symptoms_list.invalidateViews();
mListAdapter.notifyDataSetInvalidated();
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
Log.i("Not item selected", "but actually it did");
}
});
}
The SpinnerCustom Adapter code:
public class SymptomsSpinnerAdapter extends ArrayAdapter<Symptoms>{
private Context mContext;
private ArrayList<Symptoms> listState;
private SymptomsSpinnerAdapter myAdapter;
private boolean isFromView = false;
/*#Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
//mNotifyOnChange = true;
}*/
public SymptomsSpinnerAdapter(Context context, int resource, List<Symptoms> objects) {
super(context, resource, objects);
this.mContext = context;
this.listState = (ArrayList<Symptoms>) objects;
this.myAdapter = this;
}
#Override
public View getDropDownView(int position, View convertView,
ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
public View getCustomView(final int position, View convertView,
ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
LayoutInflater layoutInflator = LayoutInflater.from(mContext);
convertView = layoutInflator.inflate(R.layout.item_reasons, null);
holder = new ViewHolder();
holder.mTextView = (TextView) convertView.findViewById(R.id.text);
holder.mCheckBox = (CheckBox) convertView.findViewById(R.id.checkbox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.mTextView.setText(listState.get(position).getTitle());
// To check weather checked event fire from getview() or user input
isFromView = true;
holder.mCheckBox.setChecked(listState.get(position).isSelected());
isFromView = false;
if ((position == 0)) {
holder.mCheckBox.setVisibility(View.INVISIBLE);
} else {
holder.mCheckBox.setVisibility(View.VISIBLE);
}
holder.mCheckBox.setTag(position);
holder.mCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag();
if (!isFromView) {
listState.get(position).setSelected(isChecked);
}
}
});
return convertView;
}
#Override
public int getCount() {
return listState.size();
}
#Override
public Symptoms getItem(int position) {
if( position < 1 ) {
return null;
}
else {
return listState.get(position-1);
}
}
#Override
public long getItemId(int position) {
return 0;
}
private class ViewHolder {
private TextView mTextView;
private CheckBox mCheckBox;
}
}
Here's the (almost identical) ListAdapter:
public class SymptomsListAdapter extends BaseAdapter implements ListAdapter {
private Context mContext;
private ArrayList<Symptoms> listState;
private boolean isFromView = false;
public SymptomsListAdapter(Context context, int resource, List<Symptoms> objects) {
this.mContext = context;
this.listState = (ArrayList<Symptoms>) objects;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
public View getCustomView(final int position, View convertView,
ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
LayoutInflater layoutInflator = LayoutInflater.from(mContext);
convertView = layoutInflator.inflate(R.layout.item_reasons, null);
holder = new SymptomsListAdapter.ViewHolder();
holder.mTextView = (TextView) convertView.findViewById(R.id.text);
holder.mCheckBox = (CheckBox) convertView.findViewById(R.id.checkbox);
convertView.setTag(holder);
} else {
holder = (SymptomsListAdapter.ViewHolder) convertView.getTag();
}
holder.mTextView.setText(listState.get(position).getTitle());
// To check weather checked event fire from getview() or user input
isFromView = true;
holder.mCheckBox.setChecked(listState.get(position).isSelected());
isFromView = false;
if ((position == 0)) {
holder.mCheckBox.setVisibility(View.INVISIBLE);
} else {
holder.mCheckBox.setVisibility(View.VISIBLE);
}
holder.mCheckBox.setTag(position);
holder.mCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int getPosition = (Integer) buttonView.getTag();
if (!isFromView) {
listState.get(position).setSelected(isChecked);
}
}
});
return convertView;
}
#Override
public int getCount() {
return listState.size();
}
#Override
public Symptoms getItem(int position) {
if( position < 1 ) {
return null;
}
else {
return listState.get(position-1);
}
}
#Override
public long getItemId(int position) {
return 0;
}
private class ViewHolder {
public TextView mTextView;
public CheckBox mCheckBox;
}
}
And here's the warning I'm getting:
W/art: Before Android 4.1, method int android.support.v7.widget.DropDownListView.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
EDIT: Adding the layouts and the model class in case they may cause an issue:
Activity Layout:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="demo.hb.activity.visit.TriageReasonActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textFontWeight="6dp"
android:textSize="30sp"
android:layout_margin="20dp"
android:textAlignment="center"
android:textColor="#000000"
android:text="What is the reason for your visit?" />
<Spinner
android:id="#+id/top_reasons_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:drawable/btn_dropdown"
android:spinnerMode="dropdown"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="end">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/view_list_symptoms"
android:layout_above="#+id/next_btn"
android:layout_alignParentTop="true"/>
</RelativeLayout>
</LinearLayout>
</FrameLayout>
Item layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:text="text"
android:textAlignment="gravity" />
<CheckBox
android:id="#+id/checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true" />
</RelativeLayout>
Model Class:
public class Symptoms {
private String title;
private boolean selected;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean selected) {
this.selected = selected;
}
}
The reason that nothing is changing is because you haven't implemented the method to handle the data set changes. You need to handle how the data is reloaded in your adapter:
public class SymptomsListAdapter extends BaseAdapter implements ListAdapter {
...
public void refreshData(ArrayList<Symptoms> objects){
this.listState = (ArrayList<Symptoms>) objects;
notifyDataSetChanged();
}
...
}
This link does a great job of explaining how the notifyDataSetInvalidated() works (or in your case, why it's not working).
I'm trying to get the image in the chat box when I click on any of the images from the gridview however, whenever I try to do so it comes up with a text, so please advise what can be done to get the image itself instead of the text that is appearing, please help me out I've been stuck for too long
smiles_items_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView android:id="#+id/smile_image_view"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_gravity="center"/>
</LinearLayout>
BottomSheetDialog_Smiles.java
public class ImageAdapter2 extends BaseAdapter {
private Context mContext;
private final int[] mThumbIds;
String[] mThumbIdsString = null;
public ImageAdapter2(Context c, int[] mThumbIds , String[] mThumbIdsString)
{
mContext = c;
this.mThumbIds = mThumbIds;
this.mThumbIdsString = mThumbIdsString;
}
#Override
public int getCount() {
return mThumbIds.length & mThumbIdsString.length;
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
public class Holder {
ImageView img;
}
#Override
public View getView(final int position, final View convertView,
ViewGroup parent) {
final Holder holder = new Holder();
LayoutInflater inflater = (LayoutInflater)
getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
grid = inflater.inflate(R.layout.smiles_items_layout, null);
null);
holder.img = (ImageView) grid.findViewById(R.id.smile_image_view);
holder.img.setImageResource(mThumbIds[position]);
gridView2.setOnItemClickListener(new
AdapterView.OnItemClickListener() {
Drawable drawable;
#Override
public void onItemClick(AdapterView<?> adapterView, View view,
int i, long l) {
JSONDictionary imageChat = new JSONDictionary();
LinearLayout layout= (LinearLayout)view;
ImageView imageView = (ImageView) layout.getChildAt(0);
imageView.getDrawable();
imageChat.put("message", imageView);
Communicator.getInstance().emit("new chat message",
imageChat);
}
});
return grid;
}
}
This is the result which appears when clicking on the image
Do you need an ImageView inside an image?
I used this code to get an image.
Send your view this method get as image.
protected Bitmap ConvertToBitmap(ImageView image_view) {
Bitmap map;
image_view.setDrawingCacheEnabled(true);
image_view.buildDrawingCache();
return map=image_view.getDrawingCache();
}
In ur adapter code
holder.img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Bitmap b = ConvertToBitmap(holder.img);;
//now get bitmap used to assign
imageChat.put("message", b);
Communicator.getInstance().emit("new chat message",
imageChat);
}
});
I have two Adapter classes and in the first one, i have an Array of Integers[] named mThumbIds which is initialized like this :
// References to our images
private Integer[] mThumbIds = {
R.mipmap.beyondthe_ferocious_flash_majin_vegeta_icon,
R.mipmap.full_tilt_kamehameha_super_saiyan2_gohan_youth_icon,
R.mipmap.merciless_condemnation_goku_black_super_saiyan_rose_and_zamasu_icon,
R.mipmap.everlasting_legend_super_saiyan_goku_icon,
R.mipmap.indestructible_saiyan_evil_legendary_super_saiyan_broly_icon
};
I want to extract an Integer from this array(let's say mThumbIds[0]) and then pass it into my other adapter class and use it to get a valid drawable that i can use for my imageViews.
This is the 2nd adapter's List to hold the extracted Integer:
// References to the images via a List
private List<Integer> mGLBIcons = new ArrayList<>();
And here is where i need the drawable :
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
// If it's not recycled, initialize some attributes
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(225, 225));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mGLBIcons.get(position));
return imageView;
}
So far, nothing that i've tried has worked so i am asking for your help!
EDITED
ImageViewAdapterClass:
public class UserBoxGlbImageAdapter extends BaseAdapter {
Context mContext;
public UserBoxGlbImageAdapter(Context c) {
mContext = c;
}
#Override
public int getCount() {
return mGLBIcons.size();
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int i) {
return 0;
}
// References to the images via a List
private List<Integer> mGLBIcons = new ArrayList<>();
// Used to add card icons from the mainScreenFragment
public List<Integer> getGLBIconsList() {
return mGLBIcons;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
// If it's not recycled, initialize some attributes
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(225, 225));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
Drawable drbl = mContext.getResources().getDrawable(mGLBIcons.get(0));
imageView.setImageDrawable(drbl);
return imageView;
}
public void passInteger(Integer integer) {
mGLBIcons.add(integer);
}
}
GridSettingFragmentClass:
public class UserBoxGLBFragment extends Fragment {
GridView globalGridView;
public UserBoxGLBFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_user_box_glb, container, false);
globalGridView = view.findViewById(R.id.userBoxGlbGridView);
globalGridView.setAdapter(new UserBoxGlbImageAdapter(getContext()));
return view;
}
}
fragment_user_box_glb.xml :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorSecondaryGLB"
android:orientation="vertical"
tools:context="com.dcv.spdesigns.dokkancards.ui.UserBoxGLBFragment">
<GridView
android:id="#+id/userBoxGlbGridView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnWidth="90dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:numColumns="4"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" >
</GridView>
</LinearLayout>
you are using mipmap id and you are trying to load it as a drawable, i doubt it will work. try putting the images in the drawable folder and use thr drawable id.
this is how you set a drawable image in a adapter:
imageView.setImageDrawable(context.getResources().getDrawable(R.drawable.ic_success))
in your case it would be
imageView.setImageDrawable(context.getResources().getDrawable(listOfImages[position]))
Change your constructoras:
public UserBoxGlbImageAdapter(Context c, List<Integer> iconsList) {
mContext = c;
mGLBIcons = iconsList;
}
try using as below:
image_view_layout xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/image_view"
android:layout_width="225dp"
android:layout_height="225dp" />
</LinearLayout>
public class UserBoxGLBFragment extends Fragment {
GridView globalGridView;
List<Integer> listOfimages = new ArrayList<>();
public UserBoxGLBFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_user_box_glb, container, false);
listOfimages.add(R.drawable.beyondthe_ferocious_flash_majin_vegeta_icon);
globalGridView = view.findViewById(R.id.userBoxGlbGridView);
globalGridView.setAdapter(new UserBoxGlbImageAdapter(getContext(),listOfimages));
return view;
}
}
public class UserBoxGlbImageAdapter extends BaseAdapter {
Context mContext;
// References to the images via a List
private List<Integer> mGLBIcons = new ArrayList<>();
public UserBoxGlbImageAdapter(Context c,List<Integer> listOfIcons) {
mContext = c;
mGLBIcons = listOfIcons;
}
#Override
public int getCount() {
return mGLBIcons.size();
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int i) {
return 0;
}
// Used to add card icons from the mainScreenFragment
public List<Integer> getGLBIconsList() {
return mGLBIcons;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// If it's not recycled, initialize some attributes
if (convertView == null) {
convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.image_view_layout, parent, false));
}
ImageView imageView = (ImageView)convertView.findViewById(R.id.image_view)
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8); imageView.setImageDrawable(mContext.getResources().getDrawable(mGLBIcons.get(0)));
return imageView;
}
}
I'm trying to change the text colour of specific items in my grid view but for some reason it is not working. Everytime I launch my app the text colour for all my gridview items remain white, which is not the outcome I expected despite the code used. Does anyone know what has gone wrong and what needs to be done in order to resolve this problem?
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<GridView
android:id="#+id/gridView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:listSelector="#android:color/transparent"
android:clickable="false"
android:numColumns="auto_fit"
android:columnWidth="90dp"
android:gravity="center"
android:stretchMode="columnWidth">
</GridView>
</RelativeLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
GridView gridView;
static final String[] years = new String[]{
"1863", "1864", "1868", "1871", "1890",
"1898", "1900", "1906", "1968", "1979"};
#Override
public void onCreate (Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView = (GridView) findViewById(R.id.gridView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.gridview_item, R.id.item_gridview, years);
gridView.setAdapter(adapter);
}
public View getView(int position, View convertView, ViewGroup parent) {
TextView tv = (TextView) convertView.findViewById(R.id.item_gridview);
if(position == 4 | position == 6){
tv.setTextColor(Color.parseColor("#1e1eff"));
}
else if(position == 2){
tv.setTextColor(Color.parseColor("#e32017"));
}
else {
tv.setTextColor(Color.WHITE);
}
return tv;
}
}
layout/gridview_item.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/item_gridview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="12dp"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
you need to initialize your layout, and custom adapter
UPDATE
public class MainActivity extends Activity {
GridView gridView;
public MyAdapter adapter;
static final String[] years = new String[] {
"1863", "1864", "1868", "1871", "1890",
"1898", "1900", "1906", "1968", "1979"
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView = (GridView) findViewById(R.id.gridView1);
adapter = new MyAdapter(getApplicationContext(), 0);
gridView.setAdapter(adapter);
for (int i = 1; i < years.length; i++) {
adapter.addAdapterItem(new AdapterItem(years[i]));
}
}
public class MyAdapter extends ArrayAdapter < AdapterItem > {
private List < AdapterItem > items = new ArrayList < AdapterItem > ();
// private static LayoutInflater inflater=null;
public MyAdapter(Context context, int textviewid) {
super(context, textviewid);
}
public void addAdapterItem(AdapterItem item) {
items.add(item);
}
#Override
public int getCount() {
return items.size();
}
#Override
public AdapterItem getItem(int position) {
return ((null != items) ? items.get(position) : null);
}
#Override
public long getItemId(int position) {
return position;
}
#SuppressWarnings("deprecation")
#Override
public View getView(final int position, View convertView,
final ViewGroup parent) {
View rowView;
if (convertView == null) {
rowView = getLayoutInflater().inflate(R.layout.gridview_item,
null);
} else {
rowView = convertView;
}
TextView tv = (TextView) rowView.findViewById(R.id.item_gridview);
tv.setText(items.get(position).first);
if (position == 4 || position == 6) {
tv.setTextColor(Color.parseColor("#1e1eff"));
} else if (position == 2) {
tv.setTextColor(Color.parseColor("#e32017"));
} else {
// tv.setTextColor(Color.WHITE);
}
return rowView;
}
}
public class AdapterItem {
public String first;
// add more items
public AdapterItem(String first) {
this.first = first;
}
}
}
I have a row which is represented by an image, some text and a CheckBoxes. Whenever I'm trying to use the OnItemClickListener for the rows, the event won't fire up when clicking the CheckBoxes.
I also tried checkbox.onCheckedChangedListener but it gives me Null Pointer at findViewByID. I checked, the ID I am looking for is alright, no typos in there.
I'd like to make usage of this OnItemClickListener so later on I can play with the checkboxes. Any ideas?
Code:
ADAPTER:
public class FilterAdapter extends BaseAdapter {
private Context mContext;
private ArrayList<String> mFilters;
private ArrayList<Integer> mPictures;
private Typeface Bebas, DroidSans;
public FilterAdapter(Context context, ArrayList<String> filters, ArrayList<Integer> pictures) {
this.mContext = context;
this.mFilters = filters;
this.mPictures = pictures;
}
#Override
public int getCount() {
return mFilters.size();
}
#Override
public Object getItem(int position) {
return mFilters.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater)
mContext.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.category_filter_item, null);
}
DroidSans = Typeface.createFromAsset(mContext.getAssets(), "fonts/DroidSans.ttf");
ImageView filter_img = (ImageView) convertView.findViewById(R.id.category_picture);
TextView filter_category = (TextView) convertView.findViewById(R.id.filter_category);
CheckBox checkBox = (CheckBox) convertView.findViewById(R.id.check_box);
filter_category.setTypeface(DroidSans);
filter_category.setText(mFilters.get(position));
filter_img.setBackgroundResource(mPictures.get(position));
return convertView;
}
}
Class where using the Adapter:
public class CheckinFilters extends Fragment {
private ListView mListView;
private FilterAdapter filterAdapter;
private ArrayList<String> l = new ArrayList<String>();
private ArrayList<Integer> drawables = new ArrayList<Integer>();
private Typeface Bebas;
private ArrayList<Integer> checkboxes = new ArrayList<Integer>();
private SharedPreferences sharedPreferences;
private SharedPreferences.Editor editor;
public CheckinFilters() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.fragment_checkin_filters, container, false);
l.add("Chill");
l.add("Eat");
l.add("Explore");
l.add("Move");
l.add("Party");
l.add("Whatever");
drawables.add(R.drawable.category_chill);
drawables.add(R.drawable.category_eat);
drawables.add(R.drawable.category_explore);
drawables.add(R.drawable.category_move);
drawables.add(R.drawable.category_party);
drawables.add(R.drawable.category_whatever);
mListView = (ListView) view.findViewById(R.id.filter_list);
filterAdapter = new FilterAdapter(view.getContext(), l, drawables);
mListView.setAdapter(filterAdapter);
sharedPreferences = getActivity().getPreferences(Context.MODE_PRIVATE);
editor = sharedPreferences.edit();
Bebas = Typeface.createFromAsset(view.getContext().getAssets(), "fonts/BebasNeue.otf");
TextView mainHeader = (TextView) view.findViewById(R.id.filters_text);
mainHeader.setTypeface(Bebas);
SearchView filter_categories = (SearchView) view.findViewById(R.id.filter_categories);
int searchImgID = getResources().getIdentifier("android:id/search_button", null, null);
ImageView searchViewHint = (ImageView) filter_categories.findViewById(searchImgID);
searchViewHint.setImageResource(R.drawable.ab_icon_search);
int searchPlateID = filter_categories.getContext().getResources().getIdentifier("android:id/search_plate", null, null);
View searchPlateView = filter_categories.findViewById(searchPlateID);
if (searchPlateView != null) {
searchPlateView.setBackgroundResource(R.drawable.search_location_shape);
}
int searchViewID = filter_categories.getContext().getResources().getIdentifier("android:id/search_src_text", null, null);
TextView textView = (TextView) filter_categories.findViewById(searchViewID);
textView.setTextColor(Color.GRAY);
CheckBox checkBox = (CheckBox) view.findViewById(R.id.check_box);
return view;
}
private void save() {
sharedPreferences = getActivity().getPreferences(Context.MODE_PRIVATE);
editor = sharedPreferences.edit();
editor.putInt("first", checkboxes.size());
for (int i = 0; i < checkboxes.size(); i++) {
editor.remove("Status_" + i);
editor.putInt("Status_" + i, checkboxes.get(i));
}
editor.commit();
}
private void load() {
sharedPreferences = getActivity().getPreferences(Context.MODE_PRIVATE);
int size = sharedPreferences.getInt("first", 0);
for (int i = 0; i < size; i++) {
checkboxes.add(sharedPreferences.getInt("Status_" + i, 0));
}
}
#Override
public void onPause() {
super.onPause();
save();
}
#Override
public void onResume() {
super.onResume();
load();
}
}
Layout I'm inflating for Adapter:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ECF0F1">
<ImageView
android:id="#+id/category_picture"
android:layout_width="70dp"
android:layout_height="60dp"
android:background="#drawable/sm_profile"/>
<TextView
android:id="#+id/filter_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="#+id/category_picture"
android:padding="10dp"
android:text="Party"
android:textColor="#color/enloop_dark_gray"
android:textSize="18dp"/>
<CheckBox
android:id="#+id/check_box"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:focusable="false"
android:focusableInTouchMode="false"
android:padding="10dp"/>
</RelativeLayout>
</RelativeLayout>
Instead of using OnItemClickListener in CheckinFilters.java, you should add that code in getView() method of FilterAdapter. You are actually adding checkbox for every row but the id for all checkbox is same, so you can't apply customized code for every checkbox.
To be able to make use of all checkboxes you can put checkbox code in getView() method because it also contains an argument called position. So you can just get the position and apply OnItemClickListener to every single checkbox. That way it will work.
public class FilterAdapter extends BaseAdapter {
private Context mContext;
private ArrayList<String> mFilters;
private ArrayList<Integer> mPictures;
private Typeface Bebas, DroidSans;
public FilterAdapter(Context context, ArrayList<String> filters, ArrayList<Integer> pictures) {
this.mContext = context;
this.mFilters = filters;
this.mPictures = pictures;
}
#Override
public int getCount() {
return mFilters.size();
}
#Override
public Object getItem(int position) {
return mFilters.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater)
mContext.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.category_filter_item, null);
}
DroidSans = Typeface.createFromAsset(mContext.getAssets(), "fonts/DroidSans.ttf");
ImageView filter_img = (ImageView) convertView.findViewById(R.id.category_picture);
TextView filter_category = (TextView) convertView.findViewById(R.id.filter_category);
CheckBox checkBox = (CheckBox) convertView.findViewById(R.id.check_box);
filter_category.setTypeface(DroidSans);
filter_category.setText(mFilters.get(position));
filter_img.setBackgroundResource(mPictures.get(position));
if(position == 0) {
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked)
else {
}
}
});
}
//Similarly add OnClickListener to other checkboxes.
return convertView;
}
}