Loading all the images from gallery into the Application in android

Question

I am creating an application wherein I need all the images in the gallery into my application that has a girdview in it. I want all the images from all the folders to appear

Answer 1

Download the source code from here (Get all images from gallery in android programmatically)

activity_main.xml

MainActivity.java

package galleryimages.galleryimages;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
public static ArrayList al_images = new ArrayList<>();
boolean boolean_folder;
Adapter_PhotosFolder obj_adapter;
GridView gv_folder;
private static final int REQUEST_PERMISSIONS = 100;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    gv_folder = (GridView)findViewById(R.id.gv_folder);

    gv_folder.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView adapterView, View view, int i, long l) {
            Intent intent = new Intent(getApplicationContext(), PhotosActivity.class);
            intent.putExtra("value",i);
            startActivity(intent);
        }
    });


    if ((ContextCompat.checkSelfPermission(getApplicationContext(),
            Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) && (ContextCompat.checkSelfPermission(getApplicationContext(),
            Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)) {
        if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.WRITE_EXTERNAL_STORAGE)) && (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.READ_EXTERNAL_STORAGE))) {

        } else {
            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE},
                    REQUEST_PERMISSIONS);
        }
    }else {
        Log.e("Else","Else");
        fn_imagespath();
    }



}

public ArrayList fn_imagespath() {
    al_images.clear();

    int int_position = 0;
    Uri uri;
    Cursor cursor;
    int column_index_data, column_index_folder_name;

    String absolutePathOfImage = null;
    uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

    String[] projection = {MediaStore.MediaColumns.DATA, MediaStore.Images.Media.BUCKET_DISPLAY_NAME};

    final String orderBy = MediaStore.Images.Media.DATE_TAKEN;
    cursor = getApplicationContext().getContentResolver().query(uri, projection, null, null, orderBy + " DESC");

    column_index_data = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
    column_index_folder_name = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.BUCKET_DISPLAY_NAME);
    while (cursor.moveToNext()) {
        absolutePathOfImage = cursor.getString(column_index_data);
        Log.e("Column", absolutePathOfImage);
        Log.e("Folder", cursor.getString(column_index_folder_name));

        for (int i = 0; i < al_images.size(); i++) {
            if (al_images.get(i).getStr_folder().equals(cursor.getString(column_index_folder_name))) {
                boolean_folder = true;
                int_position = i;
                break;
            } else {
                boolean_folder = false;
            }
        }


        if (boolean_folder) {

            ArrayList al_path = new ArrayList<>();
            al_path.addAll(al_images.get(int_position).getAl_imagepath());
            al_path.add(absolutePathOfImage);
            al_images.get(int_position).setAl_imagepath(al_path);

        } else {
            ArrayList al_path = new ArrayList<>();
            al_path.add(absolutePathOfImage);
            Model_images obj_model = new Model_images();
            obj_model.setStr_folder(cursor.getString(column_index_folder_name));
            obj_model.setAl_imagepath(al_path);

            al_images.add(obj_model);


        }


    }


    for (int i = 0; i < al_images.size(); i++) {
        Log.e("FOLDER", al_images.get(i).getStr_folder());
        for (int j = 0; j < al_images.get(i).getAl_imagepath().size(); j++) {
            Log.e("FILE", al_images.get(i).getAl_imagepath().get(j));
        }
    }
    obj_adapter = new Adapter_PhotosFolder(getApplicationContext(),al_images);
    gv_folder.setAdapter(obj_adapter);
    return al_images;
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    switch (requestCode) {
        case REQUEST_PERMISSIONS: {
            for (int i = 0; i < grantResults.length; i++) {
                if (grantResults.length > 0 && grantResults[i] == PackageManager.PERMISSION_GRANTED) {
                    fn_imagespath();
                } else {
                    Toast.makeText(MainActivity.this, "The app was not allowed to read or write to your storage. Hence, it cannot function properly. Please consider granting it this permission", Toast.LENGTH_LONG).show();
                }
            }
        }
    }
}

}

adapter_photosfolder.xml

Adapter_PhotosFolder.java

    package galleryimages.galleryimages;


    import android.content.Context;
    import android.util.Log;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ArrayAdapter;
    import android.widget.ImageView;
    import android.widget.TextView;

    import com.bumptech.glide.Glide;
    import com.bumptech.glide.load.engine.DiskCacheStrategy;

    import java.util.ArrayList;


     public class Adapter_PhotosFolder extends ArrayAdapter {

    Context context;
    ViewHolder viewHolder;
    ArrayList al_menu = new ArrayList<>();


    public Adapter_PhotosFolder(Context context, ArrayList al_menu) {
        super(context, R.layout.adapter_photosfolder, al_menu);
        this.al_menu = al_menu;
        this.context = context;


    }

    @Override
    public int getCount() {

        Log.e("ADAPTER LIST SIZE", al_menu.size() + "");
        return al_menu.size();
    }

    @Override
    public int getItemViewType(int position) {
        return position;
    }

    @Override
    public int getViewTypeCount() {
        if (al_menu.size() > 0) {
            return al_menu.size();
        } else {
            return 1;
        }
    }

    @Override
    public long getItemId(int position) {
        return position;
    }


    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        if (convertView == null) {

            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.adapter_photosfolder, parent, false);
            viewHolder.tv_foldern = (TextView) convertView.findViewById(R.id.tv_folder);
            viewHolder.tv_foldersize = (TextView) convertView.findViewById(R.id.tv_folder2);
            viewHolder.iv_image = (ImageView) convertView.findViewById(R.id.iv_image);


            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        viewHolder.tv_foldern.setText(al_menu.get(position).getStr_folder());
            viewHolder.tv_foldersize.setText(al_menu.get(position).getAl_imagepath().size()+"");



        Glide.with(context).load("file://" + al_menu.get(position).getAl_imagepath().get(0))
                .diskCacheStrategy(DiskCacheStrategy.NONE)
                .skipMemoryCache(true)
                .into(viewHolder.iv_image);


        return convertView;

    }

    private static class ViewHolder {
        TextView tv_foldern, tv_foldersize;
        ImageView iv_image;


    }


    }

**PhotosActivity.java**
    package galleryimages.galleryimages;
    import android.app.Activity;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.widget.GridView;


    public class PhotosActivity extends AppCompatActivity {
    int int_position;
    private GridView gridView;
    GridViewAdapter adapter;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gridView = (GridView)findViewById(R.id.gv_folder);
        int_position = getIntent().getIntExtra("value", 0);
        adapter = new GridViewAdapter(this,MainActivity.al_images,int_position);
        gridView.setAdapter(adapter);
    }
}

**GridViewAdapter.java**

package galleryimages.galleryimages;


    import android.app.Activity;
    import android.content.Context;
    import android.util.Log;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ArrayAdapter;
    import android.widget.BaseAdapter;
    import android.widget.ImageView;
    import android.widget.TextView;

    import com.bumptech.glide.Glide;
    import com.bumptech.glide.load.engine.DiskCacheStrategy;


    import java.util.ArrayList;
    import java.util.List;


    public class GridViewAdapter extends ArrayAdapter {

    Context context;
    ViewHolder viewHolder;
    ArrayList al_menu = new ArrayList<>();
    int int_position;


    public GridViewAdapter(Context context, ArrayList al_menu,int int_position) {
        super(context, R.layout.adapter_photosfolder, al_menu);
        this.al_menu = al_menu;
        this.context = context;
        this.int_position = int_position;


    }

    @Override
    public int getCount() {

        Log.e("ADAPTER LIST SIZE", al_menu.get(int_position).getAl_imagepath().size() + "");
        return al_menu.get(int_position).getAl_imagepath().size();
    }

    @Override
    public int getItemViewType(int position) {
        return position;
    }

    @Override
    public int getViewTypeCount() {
        if (al_menu.get(int_position).getAl_imagepath().size() > 0) {
            return al_menu.get(int_position).getAl_imagepath().size();
        } else {
            return 1;
        }
    }

    @Override
    public long getItemId(int position) {
        return position;
    }


    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        if (convertView == null) {

            viewHolder = new ViewHolder();
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.adapter_photosfolder, parent, false);
            viewHolder.tv_foldern = (TextView) convertView.findViewById(R.id.tv_folder);
            viewHolder.tv_foldersize = (TextView) convertView.findViewById(R.id.tv_folder2);
            viewHolder.iv_image = (ImageView) convertView.findViewById(R.id.iv_image);


            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        viewHolder.tv_foldern.setVisibility(View.GONE);
        viewHolder.tv_foldersize.setVisibility(View.GONE);



        Glide.with(context).load("file://" + al_menu.get(int_position).getAl_imagepath().get(position))
                .diskCacheStrategy(DiskCacheStrategy.NONE)
                .skipMemoryCache(true)
                .into(viewHolder.iv_image);


        return convertView;

    }

    private static class ViewHolder {
        TextView tv_foldern, tv_foldersize;
        ImageView iv_image;


    }


    }

Model_images.java

  package galleryimages.galleryimages;

    import java.util.ArrayList;

    public class Model_images {
    String str_folder;
    ArrayList al_imagepath;

    public String getStr_folder() {
        return str_folder;
    }

    public void setStr_folder(String str_folder) {
        this.str_folder = str_folder;
    }

    public ArrayList getAl_imagepath() {
        return al_imagepath;
    }

    public void setAl_imagepath(ArrayList al_imagepath) {
        this.al_imagepath = al_imagepath;
    }
}

AndroidManifest.xml