Develop Reference

GridView only lists first image in directory

I am trying to display all images in a certain directory in a GridView, but only the first image is being displayed. Here is what I'm using:
In onCreate:
iconGrid = (GridView) findViewById(R.id.iconGrid);
getImageFiles();
iconGrid.setAdapter(new ImageAdapter(this));
getImageFiles():
public void getImageFiles() {
File dir = new File(Environment.getExternalStorageDirectory(), "img");
if (dir.isDirectory())
for (File f : dir.listFiles())
for (String ext : IMAGE_EXTENSIONS)
if (f.getName().toLowerCase().endsWith(ext)) {
Log.d(f.toString(), "Adding file");
files.add(f.getAbsolutePath());
}
}
imageAdapter()
public class ImageAdapter extends BaseAdapter {
private Context context;
public ImageAdapter(Context context) {
this.context = context;
}
public int getCount () {
return files.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
Log.d("", "Getting image " + files.get(position).toString());
ImageView c;
if (convertView == null) {
c = new ImageView(context);
c.setLayoutParams(new GridView.LayoutParams(160, 160));
c.setScaleType(ImageView.ScaleType.CENTER_CROP);
c.setPadding(8,8,8,8);
} else {
c = (ImageView) convertView;
}
Bitmap myBitmap = BitmapFactory.decodeFile(files.get(position));
c.setImageBitmap(myBitmap);
return c;
}
}
With the logging in place, it seems that getView() is never called for positions that aren't 0, and each file is being added to the list, with the list size being the correct number of files. Why is this occurring?

Everything was being added to GridView, it just wasn't visible without scrolling down and changing the number of columns.

getting image id from ImageAdapter

I'am new to android and I've a project of making a grid view of images and onclick on image it shows it , thats the ImageAdapter class code
public class ImageAdapter extends BaseAdapter{
private static LayoutInflater inflater = null;
private Activity activity;
private String mode = "";
int[] images=null ;
public ImageAdapter(Activity act, String mode , int[] images){
inflater = (LayoutInflater) act.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
activity = act;
this.mode = mode;
this.images= images ;
}
public ImageView getImage(int pos)
{
ImageView im = (ImageView) getItem(pos);
return im ;
}
#Override
public int getCount() {
return images.length;
}
#Override
public Object getItem(int position) {
return new Integer(images[position]);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
if(mode.equalsIgnoreCase("grid")){
if (view == null) {
view = inflater.inflate(R.layout.each_image1, null);
}
ImageView iv = (ImageView)view.findViewById(R.id.imageView);
iv.setImageResource(images[position]);
} else if(mode.equalsIgnoreCase("gallery")){
if (view == null) {
view = inflater.inflate(R.layout.each_image_gallery, null);
}
ImageView iv = (ImageView)view.findViewById(R.id.imageView);
iv.setImageResource(images[position]);
}
return view;
}
}
thats my grid activity
public class GridActivity extends Activity {
GridView grid = null;
public static ImageAdapter adapter1 ;
public static ImageAdapter adapter2 ;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.grid);
adapter1= new ImageAdapter(GridActivity.this, "grid" , Images.images1);
adapter2 = new ImageAdapter(GridActivity.this, "grid" , Images.images2);
Intent i = this.getIntent();
if (i!=null)
{
String unique = i.getExtras().getString("Unique");
if (unique.equals("islam"))
{
Toast.makeText(GridActivity.this, "islam", Toast.LENGTH_LONG).show();
grid = (GridView)findViewById(R.id.gridView1);
grid.setAdapter(adapter1);
}
if (unique.equals("natural"))
{
Toast.makeText(GridActivity.this, "nat", Toast.LENGTH_LONG).show();
grid = (GridView)findViewById(R.id.gridView1);
grid.setAdapter(adapter2);
}
}
grid.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int pos,long id) {
Intent i = new Intent(GridActivity.this, imgPrevActivity.class);
i.putExtra("selectedIntex", pos);
startActivity(i);
Toast.makeText(GridActivity.this,"ddd",Toast.LENGTH_LONG).show();
}
});
}
}
and this is the activity where it supposes to show any clicked on image
public class imgPrevActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.each_image1);
ImageView im = (ImageView)findViewById(R.id.imageView);
int pos = getIntent().getExtras().getInt("selectedIntex");
// ImageAdapter adapter = new ImageAdapter(imgPrevActivity.this, "image prev", null);
long Id= GridActivity.adapter1.getItemId(pos);
im.setImageResource((int) Id);
}
}
i've tried to get the position of image clicked on from the grid
then getting the Id from the position
and setting the image view to that ID
but it doesnt work !!
thats where the images are put in arrays
public class Images {
public static int[] images1 = {
R.drawable.buds, R.drawable.cherry_34,
R.drawable.clouds_2, R.drawable.coffee_beans_2,
R.drawable.death_valley_sand_dunes
};
public static int[] images2= {
R.drawable.morning_glory_pool,
R.drawable.pink_flowers, R.drawable.sun_flower,
R.drawable.sunrise_3, R.drawable.yellow_rose_3,
};
}

You have to pass your image resource id with intent. The list item id of adapter is useless because you have new Activity on the screen.
grid.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int pos,long id) {
Intent i = new Intent(GridActivity.this, imgPrevActivity.class);
i.putExtra("selectedIntex", grid.getAdapter().getItem(pos);
startActivity(i);
Toast.makeText(GridActivity.this,"ddd",Toast.LENGTH_LONG).show();
}
});
and change your code in your ImgPreviewActivity:
public class imgPrevActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.each_image1);
ImageView im = (ImageView)findViewById(R.id.imageView);
int pos = getIntent().getIntExtra("selectedIntex", 0);
im.setImageResource(pos);
}
}
I think it should work

android - get resource id from gallery

So i have a program with a Gallery (made with pictures from the resources folder), a Button and an ImageView
I want to choose one of the images from the gallery, press the button, and change the ImageView bitmap to display the one selected from the gallery...
I have the changing methods from activity to activity all fixed... but i'm just having trouble getting the id of the image picked, the integer, drawable, long, string... or whatever it helps...
Here's the code:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery);
Gallery g = (Gallery) findViewById(R.id.gallery);
g.setAdapter(new ImageAdapter(this));
g.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id) {
//CODE TO KNOW IF PICKED THE 1ST OR 2ND IMAGE
//Toast.makeText(Galeria.this, v.getId() + "", Toast.LENGTH_SHORT).show();
//Toast.makeText(Galeria.this, parent.getItemIdAtPosition(position) + "", Toast.LENGTH_SHORT).show();
//Toast.makeText(Galeria.this, id + "", Toast.LENGTH_SHORT).show();
}
});
}
public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
private Integer[] mImageId = {
R.drawable.image1, //first image
R.drawable.image2, //second image
};
public ImageAdapter(Context c) {
mContext = c;
TypedArray a = c.obtainStyledAttributes(R.styleable.Gallery1);
mGalleryItemBackground = a.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 0);
a.recycle();
}
public int getCount()
return mImageId.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
i.setImageResource(mImageId[position]);
i.setLayoutParams(new Gallery.LayoutParams(400, 225));
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
}
The three Toast there on the OnItemClick void are my attempts of showing the id... but only showing the position of the image from the gallery.
Is there any other solution? I've read something about the dynamics ids... but could understand well...
Where should I put the code to get my desired id??
Any Help? Thanks.

g.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View v, int position, long id) {
//CODE TO KNOW IF PICKED THE 1ST OR 2ND IMAGE
int imageId = (Integer) (parent.getItemAtPosition(position));
myImageView.setImageResource(imageId);
//Toast.makeText(Galeria.this, v.getId() + "", Toast.LENGTH_SHORT).show();
//Toast.makeText(Galeria.this, parent.getItemIdAtPosition(position) + "", Toast.LENGTH_SHORT).show();
//Toast.makeText(Galeria.this, id + "", Toast.LENGTH_SHORT).show();
}
});
In your adapter getItem should return the object of the dataset
public Object getItem(int position) {
return (mImageId[position]);
}

You can do something like this to get the image view resource as drawable on your itemClickListener :
(ImageView)view.getBackground()
This will return image as drawable of selected image view's resource.

Android viewflipper and gallery

I am trying to develop a application which contain a gallery with view flipper.
Gallery shows all the images.What I want to do is, the image which is shown in the view flipper should be highlighted in the gallery.
Currently I am able to highlight it on onClick.But not able to make communication between both.
I tried using following method
viewflipper.getDisplayedChild();
but it doesn't work.
following is my code
public class SliderActivity extends Activity
{
int mFlipping = 0 ;
public int currentimageindex=0;
Timer timer;
TimerTask task;
ImageView slidingimage;
android.widget.ViewFlipper flipper;
Gallery gallery;
private int[] IMAGE_IDS =
{
R.drawable.android0, R.drawable.android1, R.drawable.android2,R.drawable.android3,R.drawable.android4
};
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.mygame);
flipper = (android.widget.ViewFlipper) findViewById(R.id.flipper1);
for(int i=0;i<IMAGE_IDS.length;i++)
{
// This will create dynamic image view and add them to ViewFlipper
ImageView image = new ImageView(getApplicationContext());
image.setBackgroundResource(IMAGE_IDS[i]);
flipper.addView(image);
}
gallery=(Gallery)findViewById(R.id.gallery1);
gallery.setAdapter(new ImageAdapter(this));
if(mFlipping==0){
/** Start Flipping */
flipper.startFlipping();
mFlipping=1;
//mButton.setText(R.string.str_btn_stop);
}
else{
/** Stop Flipping */
flipper.stopFlipping();
mFlipping=0;
// mButton.setText(R.string.str_btn_start);
}
}
public class ImageAdapter extends BaseAdapter
{
int mGalleryItemBackground;
private Context mContext;
public ImageAdapter(Context c)
{
mContext = c;
TypedArray a = obtainStyledAttributes(R.styleable.Theme);
mGalleryItemBackground = a.getResourceId(
R.styleable.Theme_android_galleryItemBackground,0);
a.recycle();
}
public int getCount()
{
return IMAGE_IDS.length;
}
public Object getItem(int position)
{
return position;
}
public long getItemId(int position)
{
return position;
}
public View getView(int position,View convertView, ViewGroup parent)
{
ImageView i = new ImageView(mContext);
i.setImageResource(IMAGE_IDS[position]);
i.setLayoutParams(new Gallery.LayoutParams(150, 100));
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
}
public void onClick(View v) {
finish();
android.os.Process.killProcess(android.os.Process.myPid());
}
}

If I understand your question... I think you need to use setOnItemSelectedListener...
gallery.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapter, View gallery,
int position, long arg3) {
myPosition = position;
//tell your flipper something useful here using the current position of the gallery
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
And talk to your flipper from in the onItemSelected callback.

how to show my url images in full screen?

i created one grid view application, it's working fine now showing all images in grid view. now i am trying to display selected image in full screen, but i am getting error. my grid view images are downloaded in url link. my url link are stored in array list. how to solve this error?
error class name is FullImageActivity.class
error: imageAdapter1.GridViewConfig cannot be resolved or is not a field
error line :
imageView.setImageResource(imageAdapter1.GridViewConfig.getResim_list().get(position));
this is my coding:
public class FullImageActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image);
// get intent data
Intent i = getIntent();
// Selected image id
int position = i.getExtras().getInt("id");
ImageAdapter imageAdapter1 = new ImageAdapter(this);
ImageView imageView = (ImageView) findViewById(R.id.full_image_view);
imageView.setImageResource(imageAdapter1.GridViewConfig.getResim_list().get(position));
}
}
ImageAdapter.class
public class ImageAdapter extends BaseAdapter implements ListAdapter {
private Context context;
public ImageAdapter(Context context) {
super();
this.context = context;
//Listeye image url si ekliyor
GridViewConfig.addImageUrls();
}
#Override
public int getCount() {
return GridViewConfig.getResim_list().size();
}
#Override
public Object getItem(int position) {
return GridViewConfig.getResim_list().get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if(convertView==null)
{
imageView=new ImageView(context.getApplicationContext());
//imageView.setImageURI(Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, ""+ id));
imageView.setLayoutParams(new GridView.LayoutParams(100,100));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(5,5,5,5);
}else{
imageView=(ImageView)convertView;
}
imageView.setImageDrawable(LoadImageFromURL(GridViewConfig.getResim_list().get(position)));
return imageView;
}
//Internetten imageleri stream olarak cekip drawable olsurturuyor.
private Drawable LoadImageFromURL(String url)
{
try
{
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src");
return d;
}catch (Exception e) {
System.out.println(e);
return null;
}
}
}
GridViewconfig.class
public class GridViewConfig {
private static ArrayList<String> resim_list=new ArrayList<String>();
public static int[] getResim_list;
public static ArrayList<String> getResim_list() {
return resim_list;
}
public static void setResim_list(ArrayList<String> resim_list) {
GridViewConfig.resim_list = resim_list;
}
public static void addImageUrls(){
resim_list.add("http://igen.com/Images/Home/Client-Logo.png");
}
}
MyGridView.class
public class MyGridView extends Activity {
private GridView girGridView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
girGridView=(GridView) findViewById(R.id.gridView1_bir);
//ListView gibi buna da adapter set ediliyor.
girGridView.setAdapter(new ImageAdapter(getApplicationContext()));
girGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View view, int position,long arg3) {
// Sending image id to FullScreenActivity
Intent i = new Intent(getApplicationContext(), FullImageActivity.class);
// passing array index
i.putExtra("id", position);
startActivity(i);
}
});
}
}
I posted my full source code.....

First of all: GridViewConfig indeed is not a field of your ImageAdapter.
Second:
imageView.setImageResource(imageAdapter1.GridViewConfig.getResim_list().get(position));
it will not work: getResim_list() returns ArrayList, it contains String values NOT int
You can try change :
public class FullImageActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image);
// get intent data
Intent i = getIntent();
// Selected image id
int position = i.getExtras().getInt("id");
ImageView imageView = (ImageView) findViewById(R.id.full_image_view);
GridViewConfig.addImageUrls();
imageView.setImageDravable(LoadImageFromURL(GridViewConfig.getResim_list().get(position)));
}
private Drawable LoadImageFromURL(String url) {
....
}
}
But in my opinion you should rewrite all your code. The main problem: the drawings must be loaded in a separate thread.