Aiuto applicazione

[Turbonigro]

Salve a tutti. Da un po di tempo sto cercando di sistemare un progetto che ho fatto per android(usando eclipse). Questa applicazione deve consentire all'utente di visualizzare una sorta di galleria, con musica in sottofondo.
Il problema è dopo aver creato i tasti "avanti" e "indietro" non riesco a farli funzionare, in compenso ho creato di prova un tasto "exit" e questo riesce a funzionare(inoltre se le immagini vengono selezionate mediante i tasti direzionali della periferica virtuale si riesce a effettuare lo "switching"). Ho usato "onclicklistener" per i tasti "avanti" ed indietro però non riesco a scrivere,in java, l'azione che deve eseguire.
Mi scuso per l'incompetenza.

Questo è il codice
<br /> package net.progetto.Fumetto;<br /> <br /> <br /> import java.io.IOException;<br /> <br /> import android.app.Activity;<br /> import android.content.Intent;<br /> import android.media.MediaPlayer;<br /> import android.os.Bundle;<br /> import android.util.Log;<br /> import android.view.KeyEvent;<br /> import android.view.View.OnClickListener;<br /> import android.view.ViewGroup.LayoutParams;<br /> import android.widget.AdapterView.OnItemSelectedListener;<br /> import android.widget.Button;<br /> import android.widget.Gallery;<br /> import android.widget.ImageView;<br /> import android.widget.LinearLayout;<br /> import android.widget.AdapterView;<br /> import android.widget.AdapterView.OnItemClickListener;<br /> import android.widget.Gallery;<br /> import android.widget.GridView;<br /> import android.widget.ImageView;<br /> import android.widget.LinearLayout;<br /> import android.widget.TextView;<br /> import android.widget.Toast;<br /> import android.view.View;<br /> <br /> <br /> public class ViewsActivity extends Activity implements OnClickListener //aggiunto implements<br /> {<br /> <br /> private LinearLayout mLinearLayout;<br /> private Gallery g;<br /> private MediaPlayer mp;<br /> private ImageView i;<br /> private Thread th;<br /> private Runnable viewUpdate;<br /> private int m_index = 0;<br /> <br /> <br /> private OnClickListener mImageListener = new OnClickListener() <br /> {<br /> @Override<br /> public void onClick(View v) <br /> {<br /> <br /> setContentView(R.layout.main);<br /> g = (Gallery) findViewById(R.id.gallery1);<br /> g.setAdapter(new ImageAdapter(v.getContext()));<br /> g.setOnItemClickListener(mGalleryClickListener);<br /> g.setOnItemSelectedListener(mGallerySelectedListener);<br /> }<br /> };<br /> <br /> private OnItemSelectedListener mGallerySelectedListener = new OnItemSelectedListener()<br /> {<br /> @Override<br /> public void onItemSelected(AdapterView adapter, View v, int i, long lng) <br /> {<br /> <br /> String descr = "";<br /> switch(i)<br /> {<br /> case 0:<br /> descr = "scena1";<br /> break;<br /> case 1:<br /> descr = "scena2";<br /> break;<br /> case 2:<br /> descr = "scena3";<br /> break;<br /> case 3:<br /> descr = "scena4";<br /> break;<br /> case 4:<br /> descr = "scena5";<br /> break;<br /> case 5:<br /> descr = "scena6";<br /> break;<br /> case 6:<br /> descr = "scena7";<br /> break;<br /> case 7: <br /> descr = "scena8";<br /> break;<br /> case 8:<br /> descr = "scena9";<br /> break;<br /> case 9:<br /> descr = "scena10";<br /> break;<br /> }<br /> Toast.makeText(ViewsActivity.this, descr, Toast.LENGTH_SHORT).show();<br /> }<br /> <br /> @Override<br /> public void onNothingSelected(AdapterView arg0) <br /> {<br /> <br /> }<br /> };<br /> <br /> private OnItemClickListener mGalleryClickListener = new OnItemClickListener()<br /> {<br /> public void onItemClick(AdapterView parent, View v, int position, long id) <br /> {<br /> <br /> switch(position)<br /> {<br /> case 0:<br /> i.setImageResource(R.drawable.pic1);<br /> break;<br /> case 1:<br /> i.setImageResource(R.drawable.pic2);<br /> break;<br /> case 2:<br /> i.setImageResource(R.drawable.pic3);<br /> break;<br /> case 3:<br /> i.setImageResource(R.drawable.pic4);<br /> break;<br /> case 4:<br /> i.setImageResource(R.drawable.pic5);<br /> break;<br /> case 5:<br /> i.setImageResource(R.drawable.pic6);<br /> break;<br /> case 6:<br /> i.setImageResource(R.drawable.pic7);<br /> break;<br /> case 7:<br /> i.setImageResource(R.drawable.pic8);<br /> break;<br /> case 8:<br /> i.setImageResource(R.drawable.pic9);<br /> break;<br /> case 9: <br /> i.setImageResource(R.drawable.pic10);<br /> <br /> }<br /> <br /> setContentView(mLinearLayout);<br /> }<br /> };<br /> <br /> <br /> @Override<br /> public void onCreate(Bundle savedInstanceState) {<br /> <br /> super.onCreate(savedInstanceState);<br /> <br /> <br /> mp = MediaPlayer.create(this, R.raw.song);<br /> mp.start();<br /> <br /> setContentView(R.layout.main);<br /> <br /> final Button buttonexit = (Button) findViewById(R.id.Exit);<br /> buttonexit.setOnClickListener(new View.OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View v) {<br /> finish(); <br /> }<br /> });<br /> <br /> g = (Gallery) findViewById(R.id.gallery1);<br /> g.setAdapter(new ImageAdapter(this));<br /> g.setOnItemClickListener(mGalleryClickListener);<br /> g.setOnItemSelectedListener(mGallerySelectedListener);<br /> <br /> <br /> mLinearLayout = new LinearLayout(this);<br /> <br /> i = new ImageView(this);<br /> i.setImageResource(R.drawable.pic1);<br /> i.setAdjustViewBounds(true);<br /> i.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));<br /> <br /> mLinearLayout.addView(i);<br /> <br /> mLinearLayout.setOnClickListener(mImageListener);<br /> <br /> <br /> <br /> <br /> }<br /> <br /> <br /> <br /> <br /> <br /> private Runnable updateImg = new Runnable() <br /> { <br /> <br /> @Override<br /> public void run() <br /> {<br /> <br /> switch(m_index)<br /> {<br /> case 0:<br /> i.setImageResource(R.drawable.pic1);<br /> m_index = m_index+1;<br /> break;<br /> case 1:<br /> i.setImageResource(R.drawable.pic2);<br /> m_index = m_index+1;<br /> break;<br /> case 2:<br /> i.setImageResource(R.drawable.pic3);<br /> m_index = m_index+1;<br /> break;<br /> case 3:<br /> i.setImageResource(R.drawable.pic4);<br /> m_index = m_index+1;<br /> break; <br /> case 4:<br /> i.setImageResource(R.drawable.pic5);<br /> m_index = 0;<br /> break;<br /> }<br /> }<br /> };<br /> <br /> <br /> @Override<br /> public void onClick(View v) {<br /> // TODO Auto-generated method stub<br /> <br /> }<br /> <br /> }<br /> <br /> <br /> <br /> <br />

[Andrea]

Scusa, ma il codice per il next e il prev dov'è ?

[Turbonigro]

E' questo il problema, stavo chiedendo consiglio per capire se inserire i metodi nella stessa parte di codice dove ho inserito "buttonexit" e se mi conveniva usare onKeyDown o onclicklistener.

[Turbonigro]

Ho risolto il problema con
<br /> final Button buttonindietro = (Button) findViewById(R.id.Indietro);<br /> buttonindietro.setOnClickListener(new View.OnClickListener() {<br /> <br /> @Override<br /> <br /> public void onClick(View v) {<br /> g.onKeyDown(KeyEvent.KEYCODE_DPAD_LEFT, null);<br /> }<br /> });<br /> <br /> <br /> <br /> final Button buttonexit = (Button) findViewById(R.id.Exit);<br /> buttonexit.setOnClickListener(new View.OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View v) {<br /> finish(); <br /> }<br /> });

Ora sto provando a visualizzare l'immagine che viene selezionata dalla galleria, mediante i bottoni sopra citati. Avevo pensato ad una makeview(posta dopo oncreatebundle), potrebbe assolvere la funzione che sto cercando?

[Turbonigro]

Ora il programma funziona, funzionano i tasti per switchare avanti e indietro e la galleria, però ora sto cercando di mostrare le immagini ingrandite nella stessa finestra.
<br /> package net.learn2develop.AndroidViews;<br /> <br /> <br /> import java.io.IOException;<br /> <br /> <br /> import android.app.Activity;<br /> import android.content.Context;<br /> import android.content.Intent;<br /> import android.content.res.TypedArray;<br /> import android.graphics.drawable.Drawable;<br /> import android.media.MediaPlayer;<br /> import android.os.Bundle;<br /> import android.util.Log;<br /> import android.view.KeyEvent;<br /> import android.view.ViewGroup;<br /> import android.view.View.OnClickListener;<br /> import android.view.ViewGroup.LayoutParams;<br /> import android.widget.Adapter;<br /> import android.widget.AdapterView.OnItemSelectedListener;<br /> import android.widget.Button;<br /> import android.widget.Gallery;<br /> import android.widget.ImageView;<br /> import android.widget.LinearLayout;<br /> import android.widget.AdapterView;<br /> import android.widget.AdapterView.OnItemClickListener;<br /> import android.widget.BaseAdapter;<br /> import android.widget.Gallery;<br /> import android.widget.GridView;<br /> import android.widget.ImageSwitcher;<br /> import android.widget.ImageView;<br /> import android.widget.LinearLayout;<br /> import android.widget.SpinnerAdapter;<br /> import android.widget.TextView;<br /> import android.widget.Toast;<br /> import android.view.View;<br /> import android.widget.ViewSwitcher.ViewFactory;<br /> <br /> public class ViewsActivity extends Activity implements OnClickListener <br /> {<br /> //<br /> private Integer[] ImgIds = { R.drawable.pic1, R.drawable.pic2, R.drawable.pic3, R.drawable.pic4 };<br /> private LinearLayout mLinearLayout;<br /> private Gallery g;<br /> private MediaPlayer mp;<br /> private ImageView i;<br /> private Thread th;<br /> private Runnable viewUpdate;<br /> private int m_index = 0;<br /> <br /> <br /> private OnClickListener mImageListener = new OnClickListener() <br /> {<br /> @Override<br /> public void onClick(View v) <br /> {<br /> <br /> setContentView(R.layout.main);<br /> g = (Gallery) findViewById(R.id.gallery1);<br /> g.setAdapter(new ImageAdapter(v.getContext()));<br /> g.setOnItemClickListener(mGalleryClickListener);<br /> g.setOnItemSelectedListener(mGallerySelectedListener);<br /> }<br /> };<br /> <br /> private OnItemSelectedListener mGallerySelectedListener = new OnItemSelectedListener()<br /> {<br /> @Override<br /> public void onItemSelected(AdapterView adapter, View v, int i, long lng) <br /> {<br /> <br /> String descr = "";<br /> switch(i)<br /> {<br /> case 0:<br /> descr = "scena1";<br /> break;<br /> case 1:<br /> descr = "scena2";<br /> break;<br /> case 2:<br /> descr = "scena3";<br /> break;<br /> case 3:<br /> descr = "scena4";<br /> break;<br /> case 4:<br /> descr = "scena5";<br /> break;<br /> case 5:<br /> descr = "scena6";<br /> break;<br /> case 6:<br /> descr = "scena7";<br /> break;<br /> case 7: <br /> descr = "scena8";<br /> break;<br /> case 8:<br /> descr = "scena9";<br /> break;<br /> case 9:<br /> descr = "scena10";<br /> break;<br /> }<br /> Toast.makeText(ViewsActivity.this, descr, Toast.LENGTH_SHORT).show();<br /> }<br /> <br /> @Override<br /> public void onNothingSelected(AdapterView arg0) <br /> {<br /> <br /> }<br /> };<br /> <br /> private OnItemClickListener mGalleryClickListener = new OnItemClickListener()<br /> {<br /> <br /> public void onItemClick(AdapterView parent, View v, int position, long id) <br /> {<br /> <br /> switch(position)<br /> {<br /> case 0:<br /> i.setImageResource(R.drawable.pic1);<br /> break;<br /> case 1:<br /> i.setImageResource(R.drawable.pic2);<br /> break;<br /> case 2:<br /> i.setImageResource(R.drawable.pic3);<br /> break;<br /> case 3:<br /> i.setImageResource(R.drawable.pic4);<br /> break;<br /> case 4:<br /> i.setImageResource(R.drawable.pic5);<br /> break;<br /> case 5:<br /> i.setImageResource(R.drawable.pic6);<br /> break;<br /> case 6:<br /> i.setImageResource(R.drawable.pic7);<br /> break;<br /> case 7:<br /> i.setImageResource(R.drawable.pic8);<br /> break;<br /> case 8:<br /> i.setImageResource(R.drawable.pic9);<br /> break;<br /> case 9: <br /> i.setImageResource(R.drawable.pic10);<br /> break;<br /> }<br /> <br /> <br /> <br /> <br /> setContentView(mLinearLayout);<br /> }<br /> };<br /> <br /> <br /> @Override<br /> public void onCreate(Bundle savedInstanceState) {<br /> <br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.main);<br /> <br /> mp = MediaPlayer.create(this, R.raw.song);<br /> mp.start();<br /> Gallery g = (Gallery) findViewById(R.id.gallery1);<br /> g.setAdapter(new ImageAdapter(this));<br /> g.setOnItemClickListener(new OnItemClickListener(){<br /> public void onItemClick(AdapterView parent, View v, int position, long id) { <br /> if (position >= ImgIds.length) { <br /> position = position % ImgIds.length; <br /> } <br /> // Toast.makeText(this, ""+position, Toast.LENGTH_SHORT).show();<br /> }<br /> });<br /> <br /> }<br /> //<br /> public class ImageAdapter extends BaseAdapter { <br /> int mGalleryItemBackground; <br /> private Context mContext; <br /> <br /> public ImageAdapter(Context c) { <br /> mContext = c; <br /> TypedArray a = obtainStyledAttributes(R.styleable.Gallery1); <br /> mGalleryItemBackground = a.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 0); <br /> <br /> a.recycle(); <br /> } <br /> <br /> public int getCount() { <br /> return Integer.MAX_VALUE; <br /> } <br /> <br /> public Object getItem(int position) { <br /> if (position >= ImgIds.length) { <br /> position = position % ImgIds.length; <br /> } <br /> return position; <br /> } <br /> <br /> public long getItemId(int position) { <br /> if (position >= ImgIds.length) { <br /> position = position % ImgIds.length; <br /> } <br /> return position; <br /> } <br /> <br /> public View getView1(int position, View convertView, ViewGroup parent) { <br /> ImageView i = new ImageView(mContext); <br /> if (position >= ImgIds.length) { <br /> position = position % ImgIds.length; <br /> } <br /> i.setImageResource(ImgIds[position]); <br /> i.setLayoutParams(new LayoutParams(80, 80)); <br /> i.setScaleType(ImageView.ScaleType.FIT_XY); <br /> i.setBackgroundResource(mGalleryItemBackground); <br /> return i; <br /> } <br /> <br /> public int checkPosition(int position) { <br /> if (position >= ImgIds.length) { <br /> position = position % ImgIds.length; <br /> }<br /> <br /> return position; <br /> <br /> <br /> <br /> <br /> final Button buttonavanti = (Button) findViewById(R.id.Avanti);<br /> buttonavanti.setOnClickListener(new View.OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View v) {<br /> g.onKeyDown(KeyEvent.KEYCODE_DPAD_RIGHT, null);<br /> <br /> <br /> }<br /> }); <br /> <br /> final Button buttonindietro = (Button) findViewById(R.id.Indietro);<br /> buttonindietro.setOnClickListener(new View.OnClickListener() {<br /> <br /> @Override<br /> <br /> public void onClick(View v) {<br /> g.onKeyDown(KeyEvent.KEYCODE_DPAD_LEFT, null);<br /> }<br /> });<br /> <br /> <br /> <br /> final Button buttonexit = (Button) findViewById(R.id.Exit);<br /> buttonexit.setOnClickListener(new View.OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View v) {<br /> finish(); <br /> }<br /> });<br /> <br /> <br /> <br /> mLinearLayout = new LinearLayout(ViewsActivity.this);<br /> <br /> i = new ImageView(ViewsActivity.this);<br /> i.setImageResource(R.drawable.pic1);<br /> i.setAdjustViewBounds(true);<br /> i.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));<br /> <br /> mLinearLayout.addView(i);<br /> <br /> mLinearLayout.setOnClickListener(mImageListener);<br /> <br /> <br /> <br /> <br /> }<br /> <br /> <br /> public void onClick(View v) {<br /> // TODO Auto-generated method stub<br /> <br /> }<br /> <br /> @Override<br /> public View getView(int position, View convertView, ViewGroup parent) {<br /> // TODO Auto-generated method stub<br /> return null;<br /> }<br /> <br /> }<br /> @Override<br /> public void onClick(View v) {<br /> // TODO Auto-generated method stub<br /> <br /> }<br /> }<br /> <br /> <br /> <br />



però all'altezza del final button mi dice che il codice non è raggiungibile, non riesco a capire l'errore.
Grazie anticipatamente.

[TheCopacabanaMan]

C'è un componente Gallery che fa proprio al caso tuo, così ti eviti una tonnellata di codice (e di grattacapi, e di errori, e di debug, ...).

[Turbonigro]

Ho usato la gallery per creare la galleria "scorrevole" in alto e ora ho risolto il problema del button, però il programma crasha.
In sostanza vorrei solo avere una cosa del genere

http://www.androidpeople.com/wp-cont...gegallery2.png

Non capisco perché non funziona nel mio codice.

[Jordano]

se non lo capisci tu che lo stai scrivendo figuriamoci chi legge senza neanche avere il codice che ora hai cambiato. Posta l'output di logcat riguardante l'errore...