Sto usando pageradapter e viewpager per visualizzare l'array imageview, array textview. Ma come posso eliminare il cercapersone sul clic del pulsante .Entire codice nel codice sottostante, ma ho aggiunto il pulsante in xml onclick dovrebbe cancellare la pagina.come eliminare l'elemento da viewpager e pageradapter
http://www.androidbegin.com/tutorial/android-viewpager-gallery-images-and-texts-tutorial/
package com.androidbegin.viewpagertutorial;
import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class ViewPagerAdapter extends PagerAdapter {
// Declare Variables
Context context;
String[] rank;
String[] country;
String[] population;
int[] flag;
LayoutInflater inflater;
public ViewPagerAdapter(Context context, String[] rank, String[] country,
String[] population, int[] flag) {
this.context = context;
this.rank = rank;
this.country = country;
this.population = population;
this.flag = flag;
}
@Override
public int getCount() {
return rank.length;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((RelativeLayout) object);
}
@Override
public Object instantiateItem(final ViewGroup container, final int position) {
// Declare Variables
TextView txtrank;
TextView txtcountry;
TextView txtpopulation;
ImageView imgflag;
Button b;
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView = inflater.inflate(R.layout.viewpager_item, container,
false);
// Locate the TextViews in viewpager_item.xml
txtrank = (TextView) itemView.findViewById(R.id.rank);
txtcountry = (TextView) itemView.findViewById(R.id.country);
txtpopulation = (TextView) itemView.findViewById(R.id.population);
b=(Button)itemView.findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
// Capture position and set to the TextViews
txtrank.setText(rank[position]);
txtcountry.setText(country[position]);
txtpopulation.setText(population[position]);
// Locate the ImageView in viewpager_item.xml
imgflag = (ImageView) itemView.findViewById(R.id.flag);
// Capture position and set to the ImageView
imgflag.setImageResource(flag[position]);
// Add viewpager_item.xml to ViewPager
((ViewPager) container).addView(itemView);
return itemView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
// Remove viewpager_item.xml from ViewPager
((ViewPager) container).removeView((RelativeLayout) object);
}
}
////////////////////
// Locate the ViewPager in viewpager_main.xml
viewPager = (ViewPager) findViewById(R.id.pager);
// Pass results to ViewPagerAdapter Class
adapter = new ViewPagerAdapter(MainActivity.this, rank, country, population, flag);
// Binds the Adapter to the ViewPager
viewPager.setAdapter(adapter);
Ho una domanda, la mia app si arresta in modo anomalo quando provo a eliminare l'ultimo elemento della mia lista. Dice "java.lang.IndexOutOfBoundsException: indice 6 non valido, la dimensione è 6". Punta a questa linea: imageView.setImageResource (regionImages.get (position)); –
@KalaJ pubblica il tuo codice come domanda sul SO. allora dimmi il link! – mmlooloo
L'ho capito, grazie: D –