Develop Reference

How to create OnClick listener for listview in fragment using adapter?

I'm trying to create nested listviews in multiple fragments using adapter. I'm able to create it in single activity but I couldn't do it in fragments using adapter. Refer second fragment as fragment2 and second list as listview2.
package com.example.admin.volleyrequestandresponse.adapter;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.example.admin.volleyrequestandresponse.R;
import com.example.admin.volleyrequestandresponse.activities.NavigationActivity;
import com.example.admin.volleyrequestandresponse.fragments.HomeFragment;
import java.util.ArrayList;
public class HomeFragmentAdapter extends BaseAdapter {
private ArrayList<String> stringArray;
private ArrayList<String> integerArray;
int[] logos;
Context context;
NavigationActivity navigationActivity;
public HomeFragmentAdapter(Context context, ArrayList<String> stringArray, ArrayList<String> integerArray, int[] logos) {
this.context = context;
this.stringArray = stringArray;
this.integerArray = integerArray;
this.logos = logos;
navigationActivity = new NavigationActivity();
}
#Override
public int getCount() {
return integerArray.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.home_adapter, null);
holder = new ViewHolder();
holder.imageview = (ImageView) convertView.findViewById(R.id.indeximg);
holder.txtTitle = (TextView) convertView.findViewById(R.id.indexname);
holder.text = (TextView) convertView.findViewById(R.id.indexvalue);
holder.relativeLayout = (RelativeLayout) convertView.findViewById(R.id.home_adapter);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.imageview.setImageResource(logos[position]);
holder.txtTitle.setText(stringArray.get(position));
holder.text.setText(integerArray.get(position));
return convertView;
}
private class ViewHolder {
RelativeLayout relativeLayout;
TextView text;
TextView txtTitle;
ImageView imageview;
}
}
Fragment code to call the adapter
homeFragmentAdapter = new HomeFragmentAdapter(getActivity(),index_string,index_values,index_logo);
listview_HomeFragment.setAdapter(homeFragmentAdapter);

Gridview Adapter can't read from external storage, werid loop iterations

I have had a basic Gridview sample from Google's documentation, which worked perfectly.
I also have some code that provides result as ArrayList with Bitmaps of last created pictures in Android's external storage (Permissions in manifest are granted) and that code also worked just fine on other project.
When I merged that concepts into one simple app code isn't working at all, activity remains empty till app crashes. However I noticed something interesting: There's a for loop which has defined number of iterations by int capacity but in Logcat I can see that number of iterations in this loop surpassing declared int value, basically that's reason why app crashes (outOfBoundsException).
So i Have those 2 problems and sitting on that for couple of hours... here is my code:
MainActivity.java
package com.example.patryk.hellogridview;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridview = findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(MainActivity.this, "" + position,
Toast.LENGTH_SHORT).show();
}
});
}
PhotosReader.java
package com.example.patryk.hellogridview;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.provider.MediaStore;
import android.util.Log;
import java.util.ArrayList;
public class PhotosReader {
private int capacity = 5;
private ArrayList<Bitmap> photos = new ArrayList<Bitmap>(capacity);
public int getCapacity() {
return capacity;
}
public void setCapacity(int capacity) {
this.capacity = capacity;
}
public void setPhotos(ArrayList<Bitmap> photos) {
this.photos = photos;
}
public PhotosReader() {
}
public ArrayList<Bitmap> getPhotos(Context context) {
String[] projection = new String[]{
MediaStore.Images.ImageColumns._ID,
MediaStore.Images.ImageColumns.DATA,
MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
MediaStore.Images.ImageColumns.DATE_TAKEN,
MediaStore.Images.ImageColumns.MIME_TYPE
};
Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null,
null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC");
cursor.moveToFirst();
for(int i = 1; i<=capacity; i++){
photos.add(BitmapFactory.decodeFile(cursor.getString(1)));
cursor.moveToNext();
Log.d("photos.add", "iteration");
}
return photos;
}
public Bitmap getPhotosBitmap(ArrayList photos, int position){
Bitmap bm = (Bitmap) photos.get(position);
return bm;
}
}
ImageAdapter.java
package com.example.patryk.hellogridview;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return 0;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
// create a new ImageView for each item referenced by the Adapter
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(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
PhotosReader PR = new PhotosReader();
imageView.setImageBitmap(PR.getPhotosBitmap(PR.getPhotos(mContext), position));
return imageView;
}
}

This function inside ImageAdapter should not return 0. It should return the number of images that you want to show in the grid so should return capacity in your case. GridView assumes that there are 0 things to show
public int getCount() {
return 0;
}
change this to
public int getCount() {
return capacity;
}
Actually the correct way to do this would be to pass the PhotoReader object from the ImageAdapter constructor using ImageAdapter(context,photoReader) and then use photoReader.getCapacity() in getCount() function

getImage() method undefined for the type ClipData.Item Java

I'm creating a custom gridView and I need to have an image and a text for the elements of the gridView.
I have this adapter for the gridView but I can't solve the error I have:
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
/**
*
* #author manish.s
*
*/
public class CustomGridViewAdapter extends ArrayAdapter<Item> {
Context context;
int layoutResourceId;
ArrayList<Item> data = new ArrayList<Item>();
public CustomGridViewAdapter(Context context, int layoutResourceId,
ArrayList<Item> data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
RecordHolder holder = null;
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new RecordHolder();
holder.txtTitle = (TextView) row.findViewById(R.id.item_text);
holder.imageItem = (ImageView) row.findViewById(R.id.item_image);
row.setTag(holder);
} else {
holder = (RecordHolder) row.getTag();
}
Item item = data.get(position);
holder.txtTitle.setText(item.getTitle());
holder.imageItem.setImageBitmap(item.getImage());
return row;
}
static class RecordHolder {
TextView txtTitle;
ImageView imageItem;
}
}
The error I have is here:
holder.txtTitle.setText(item.getTitle());
holder.imageItem.setImageBitmap(item.getImage());
It says: The method item.getTitle (and also item.getImage) is undefined for the type ClipData.Item
What am I missing?

The error is very specific: The method you used isn't defined for ClipData.Item.
For the text try to use:
holder.txtTitle.setText(item.getText());
For the image it really depend on the way you built your Item.

Android prompting to save image or set wallpaper from gridview

I would like the user to get the option once the chosen image is clicked to set the image as their wallpaper or to save it to their SD card.
This is my first time doing this so I need some guidance. I have looked at other questions similar to this one but everyone uses different methods to the one I have done to set up displaying the images.
Thanks in advance, here's the code:
AdapterView for Displayimagesin:
package com.question;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class AdapterViewADV extends BaseAdapter {
private Context mContext;
public Integer[] mThumbIds = {
R.drawable.Image1,
R.drawable.Image2,
R.drawable.Image3,
R.drawable.Image4,
R.drawable.Image5,
R.drawable.Image6
};
public AdapterViewADV(Context c){
mContext = c;
}
#Override
public int getCount() {
return mThumbIds.length;
}
#Override
public Object getItem(int position) {
return mThumbIds[position];
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = null;
if(convertView == null){
imageView = new ImageView(mContext);imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setLayoutParams(new GridView.LayoutParams(NO_SELECTION, NO_SELECTION));
convertView = imageView;
}else{
imageView = (ImageView)convertView;
}
imageView.setImageResource(mThumbIds[position]);
return convertView;
}
}
Class displaying images in:
package com.question;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.Toast;
public class Displayimagesin extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_battlefield4);
GridView gridView = (GridView) findViewById(R.id.grid_view);
// Instance of ImageAdapter Class
gridView.setAdapter(new AdapterViewADV(this));
gridView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(Displayimagesin.this, "Wallpaper set",
Toast.LENGTH_SHORT).show();
}
});
}
}

set wallpaper by calling WallpaperManager .
get a reference to your image to Bitmap.
something like this
WallpaperManager wm=WallpaperManager.getInstance(this);
wm.setBitmap(bitmap);
and in manifest file add permission
android.permission.SET_WALLPAPER
hope it helps.

Try to use WallpaperManager to set wallpaper
WallpaperManager myWallpaperManager=WallpaperManager.getInstance(getApplicationContext());
myWallpaperManager.setResource(mThumbIds[curruntPosition]);

OutOfMemoryException while scroll many time

I got a problem in gridview scroll. I have make one custom gridview and insert widget in raw file and inflate them through view. I got proper result and proper data and everything is gone well but when I scroll gridview 3-4 times up down speedy it raises an OutOfMemoryException.
This app contain list of installed app list and icon
Here is my custome adapter's code:
package com.AppFavorits;
import java.util.ArrayList;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.AppFavorits.ImageLoad.ImageLoader;
public class GridViewAdapter extends BaseAdapter {
private Context activit;
LayoutInflater inflator;
public RelativeLayout imgvGridItem;
public TextView txtGridItemlabel;
public CheckBox chkbxGridItem;
ArrayList<PInfo> lstpinfo = new ArrayList<PInfo>();
public ImageLoader imageLoader;
public GridViewAdapter(Context m1, ArrayList<PInfo> lstpinfo) {
activit = m1;
inflator = LayoutInflater.from(m1);
this.lstpinfo = lstpinfo;
imageLoader=new ImageLoader(m1.getApplicationContext());
}
public static class ViewHolder {
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder view;
// LayoutInflater inflator = activit.getLayoutInflater();
view = new ViewHolder();
convertView = inflator.inflate(R.layout.gridviewrow, null);
imgvGridItem = (RelativeLayout) convertView
.findViewById(R.id.rlGreidItemicon);
txtGridItemlabel = (TextView) convertView
.findViewById(R.id.txtGridItemlabel);
chkbxGridItem = (CheckBox) convertView
.findViewWithTag(R.id.chkbxGridItem);
if ((lstpinfo.get(position).appname.toString()) != null){
Drawable d = lstpinfo.get(position).icon;
//new ImageLoad().execute();
imgvGridItem.addView(getimageviewimage(lstpinfo.get(position).icon));
txtGridItemlabel.setText(lstpinfo.get(position).appname.toString());
// convertView.setTag(view);
}
return convertView;
}
#Override
public int getCount() {
return lstpinfo.size();
}
#Override
public Object getItem(int position) {
return lstpinfo.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
public RelativeLayout getimageviewimage(Drawable d) {
RelativeLayout seprator = new RelativeLayout(activit);
seprator.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
seprator.setGravity(Gravity.LEFT | Gravity.CENTER);
ImageView imgmap = new ImageView(activit);
imgmap.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
// imgmap.setBackgroundResource(R.drawable.a13);
Bitmap bitmap = ((BitmapDrawable)d).getBitmap();
imageLoader.DisplayImage(bitmap, imgmap);
//imgmap.setImageBitmap(bitmap);
seprator.setPadding(5, 5, 15, 5);
seprator.addView(imgmap);
return seprator;
}
private class ImageLoad extends AsyncTask<Void, Void, Void> {
// private final ProgressDialog dialog = new ProgressDialog(tranning.this);
protected void onPreExecute() {
// this.dialog.setMessage("Please Wait...");
// this.dialog.show();
// put your code which preload with processDialog
}
#Override
protected Void doInBackground(Void... arg0) {
// put your code here
return null;
}
#Override
protected void onPostExecute(final Void unused) {
/*if (this.dialog.isShowing()) {
this.dialog.dismiss();
} */
}
}
}
I think there are something wrong with getview.

In getView() you are not reusing convertView, but always inflating new one with inflator. This requires more memory and makes your code slower. Also, check that you are not leaking images with imageLoader.

out of memory usually means that there is not enough memory to load the file. try closing everything else (or atleast a few other apps) and trying again.

Download code From Following link and use gridview instead of listview
Lazy Loading Example