I'm creating a gallery app and i'm using viewpager to show photos.
Class of the list of images.
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
public class FotosList extends AppCompatActivity {
public static FotosList m;
private final Integer image_ids[] = {
R.drawable.foto1,
R.drawable.foto2,
R.drawable.foto3,
R.drawable.foto4,
R.drawable.foto5,
R.drawable.foto6,
R.drawable.foto8,
R.drawable.foto9,
R.drawable.foto10,
R.drawable.foto11,
R.drawable.foto12,
R.drawable.foto13,
R.drawable.foto14,
R.drawable.foto15
};
@Override
protected void onCreate(Bundle savedInstanceState) {
m=this;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fotos_list);
RecyclerView recyclerView = (RecyclerView)findViewById(R.id.imagegallery);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getApplicationContext(),2);
recyclerView.setLayoutManager(layoutManager);
ArrayList<CreateList> createLists = prepareData();
MyAdapter adapter = new MyAdapter(getApplicationContext(), createLists);
recyclerView.setAdapter(adapter);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
finish();
return true;
}
public class CreateList {
private String image_title;
private Integer image_id;
public Integer getImage_ID() {
return image_id;
}
public void setImage_ID(Integer android_image_url) {
this.image_id = android_image_url;
}
}
private ArrayList<CreateList> prepareData(){
ArrayList<CreateList> theimage = new ArrayList<>();
for(int i = 0; i< image_ids.length; i++){
CreateList createList = new CreateList();
createList.setImage_ID(image_ids[i]);
theimage.add(createList);
}
return theimage;
}
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private ArrayList<CreateList> galleryList;
private Context context;
public MyAdapter(Context context, ArrayList<CreateList> galleryList) {
this.galleryList = galleryList;
this.context = context;
}
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.cell_layout, viewGroup, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(MyAdapter.ViewHolder viewHolder,final int i) {
viewHolder.img.setScaleType(ImageView.ScaleType.CENTER_CROP);
viewHolder.img.setImageResource((galleryList.get(i).getImage_ID()));
viewHolder.img.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent in = new Intent(FotosList.m, Fotos.class);
in.putExtra("img",galleryList.get(i).getImage_ID());
m.startActivity(in);
}
});
}
@Override
public int getItemCount() {
return galleryList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private TextView title;
private ImageView img;
public ViewHolder(View view) {
super(view);
title = (TextView)view.findViewById(R.id.title);
img = (ImageView) view.findViewById(R.id.img);
}
}
}
}
Class of viewPager:
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import uk.co.senab.photoview.PhotoViewAttacher;
public class Fotos extends Activity {
int[] mResources = {
R.drawable.foto1,
R.drawable.foto2,
R.drawable.foto3,
R.drawable.foto4,
R.drawable.foto5,
R.drawable.foto6,
R.drawable.foto8,
R.drawable.foto9,
R.drawable.foto10,
R.drawable.foto11,
R.drawable.foto12,
R.drawable.foto13,
R.drawable.foto14,
R.drawable.foto15
};
int foto;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fotos);
CustomPagerAdapter mCustomPagerAdapter = new CustomPagerAdapter(this);
ViewPager mViewPager = (ViewPager) findViewById(R.id.viewpager);
mViewPager.setAdapter(mCustomPagerAdapter);
try {
foto = getIntent().getIntExtra("img", 0);
mViewPager.setCurrentItem(foto);
} catch (Exception e) {
}
}
public class CustomPagerAdapter extends PagerAdapter {
Context mContext;
LayoutInflater mLayoutInflater;
PhotoViewAttacher mAttacher;
public CustomPagerAdapter(Context context) {
mContext = context;
mLayoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return mResources.length;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((LinearLayout) object);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
View itemView = mLayoutInflater.inflate(R.layout.pager_item, container, false);
ImageView imageView = (ImageView) itemView.findViewById(R.id.imageView);
imageView.setImageResource(mResources[position]);
mAttacher = new PhotoViewAttacher(imageView);
container.addView(itemView);
return itemView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((LinearLayout) object);
}
}
}
On click on a photo to open the viewpager with image... His open the last image... How to open clicked image
in onClickViewPager just pass the position of the clicked item to second activity
viewHolder.img.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent in = new Intent(FotosList.m, Fotos.class);
in.putExtra("img",i);
m.startActivity(in);
}
});