Gallery

Tela

 
Passa entre uma imagem e outra deslizando o dedo e ao tap sobre a imagem mostra um Toast com a imagem

galeria.xml

 
<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

  android:layout_width="fill_parent"

  android:layout_height="fill_parent"

  android:orientation="vertical" >

  <TextView

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:text="Exemplo de grid" />

  <Gallery

      android:id="@+id/gallery"

      android:layout_width="fill_parent"

      android:layout_height="fill_parent"

      android:gravity="center" />

</LinearLayout>
 

Java

 
package com.laioutes;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.Gallery;

import android.widget.ImageView;

import android.widget.Toast;

public class LayoutsActivity extends Activity {

 private int[] imagens = { R.drawable.smile, R.drawable.smile,

                 R.drawable.smile, R.drawable.smile, R.drawable.smile,

                 R.drawable.smile, R.drawable.smile, R.drawable.smile };

 @Override

 public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.galeria);

         Gallery galeria = (Gallery) findViewById(R.id.gallery);

         galeria.setAdapter(new AdaptadorImagem(this, imagens, new Gallery.LayoutParams(150, 100)));

         galeria.setOnItemClickListener(new OnItemClickListener() {

                 public void onItemClick(AdapterView parent, View v, int posicao,

                                 long id) {

                         ImageView img = new ImageView(LayoutsActivity.this);

                         img.setImageResource(imagens[posicao]);

                         Toast t = new Toast(LayoutsActivity.this);

                         t.setView(img);

                         t.show();

                 }

         });

 }

}

AdaptadorImagem.java

package com.laioutes;

import android.content.Context;

import android.view.View;

import android.view.ViewGroup;

import android.view.ViewGroup.LayoutParams;

import android.widget.BaseAdapter;

import android.widget.ImageView;

public class AdaptadorImagem extends BaseAdapter {

 private Context ctx;

 private final int[] imagens;

 private final LayoutParams params;

 public AdaptadorImagem(Context c, int[] imagens, LayoutParams params)

 {

         this.ctx = c;

         this.imagens = imagens;

         this.params = params;

 }

 public int getCount() {

         return imagens.length;

 }

 public Object getItem(int posicao) {

         return posicao;

 }

 public long getItemId(int posicao) {

         return posicao;

 }

 public View getView(int posicao, View convertView, ViewGroup parent) {

         ImageView img = new ImageView(ctx);

         img.setImageResource(imagens[posicao]);

         img.setAdjustViewBounds(true);

         img.setLayoutParams(params);

         return img;

 }

}