I have seen other SO questions and already tried their solution's but didn't help so i am myself asking
I am facing a problem while loading all images from device in a 'GridView', I am using 'MediaStore' to fetch images and i am quite successfull in that and also i have divided all the images folder wise
My phone is having 1 GB ram so i am able load images without difficulties,
But the problem i am facing is that when i use it another device with less then my phone's ram it takes more time to load the images and sometimes it just don't load any image i have already tried using 'AsyncTask' but its not helping.
Below is what i have done so far:
public class DirectoryImagesActivity extends Activity {
private ImageAdapter imageAdapter;
public static String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;
Bundle dirBundle;
String dirName;
public static Bitmap[] imageThumb;
ArrayList<Bitmap> dirBitmap = new ArrayList<Bitmap>();
/**
* Overrides methods
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.photo_gallery);
dirBundle = getIntent().getExtras();
dirName = dirBundle.getString("dir_name");
String[] projectionFolder = { MediaStore.Images.Media._ID,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
MediaStore.Images.Media.DATA };
String selection = MediaStore.Images.Media.BUCKET_DISPLAY_NAME + " = ?";
String[] selectionArgs = new String[] { dirName };
#SuppressWarnings("deprecation")
Cursor mImageCursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projectionFolder,
selection, selectionArgs, null);
int image_column_index = mImageCursor
.getColumnIndex(MediaStore.Images.Media._ID);
this.count = mImageCursor.getCount();
arrPath = new String[this.count];
imageThumb = new Bitmap[this.count];
ids = new int[count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++) {
mImageCursor.moveToPosition(i);
ids[i] = mImageCursor.getInt(image_column_index);
int dataColumnIndex = mImageCursor
.getColumnIndex(MediaStore.Images.Media.DATA);
arrPath[i] = mImageCursor.getString(dataColumnIndex);
int id = mImageCursor.getInt(mImageCursor
.getColumnIndex(MediaStore.MediaColumns._ID));
dirBitmap.add(MediaStore.Images.Thumbnails.getThumbnail(
getContentResolver(), id,
MediaStore.Images.Thumbnails.MICRO_KIND, null));
}
GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid);
imageAdapter = new ImageAdapter(this);
imagegrid.setAdapter(imageAdapter);
// imagecursor.close();
final Button selectBtn = (Button) findViewById(R.id.selectBtn);
selectBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i = 0; i < len; i++) {
if (thumbnailsselection[i]) {
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0) {
Toast.makeText(getApplicationContext(),
"Please select at least one image",
Toast.LENGTH_LONG).show();
} else {
Log.d("SelectedImages", selectImages);
Intent i = new Intent();
i.putExtra("data", selectImages);
setResult(Activity.RESULT_OK, i);
finish();
}
}
});
}
#Override
public void onBackPressed() {
setResult(Activity.RESULT_CANCELED);
super.onBackPressed();
}
/**
* Class method
*/
/**
* This method used to set bitmap.
*
* #param iv
* represented ImageView
* #param id
* represented id
*/
public void setBitmap(final ImageView iv, final Bitmap id) {
new AsyncTask<Void, Void, Bitmap>() {
#Override
protected Bitmap doInBackground(Void... params) {
return id;
}
#Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
iv.setImageBitmap(result);
}
}.execute();
}
/**
* List adapter
*
* #author tasol
*/
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageLoader imageLoader;
Context context;
public ImageAdapter(Context context) {
this.context = context;
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader = new ImageLoader(context);
}
public int getCount() {
return dirBitmap.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView,
ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.layout_improved_grid,
null);
holder.imageview = (SquareImageView) convertView
.findViewById(R.id.thumbImage);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.imageview.setId(position);
// holder.imageview.setImageBitmap(imageThumb[position]);
holder.imageview.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Toast.makeText(DirectoryImagesActivity.this,
"Item Clicked", Toast.LENGTH_LONG).show();
Intent i = new Intent(getApplicationContext(),
FullImageActivity.class); // passing array index
i.putExtra("id", position);
startActivity(i);
}
});
try {
setBitmap(holder.imageview, dirBitmap.get(position));
} catch (Throwable e) {
}
holder.id = position;
return convertView;
}
}
/**
* Inner class
*
* #author tasol
*/
class ViewHolder {
SquareImageView imageview;
int id;
}
public static Bitmap convertBitmap(String path) {
Bitmap bitmap = null;
BitmapFactory.Options bfOptions = new BitmapFactory.Options();
bfOptions.inDither = false; // Disable Dithering mode
bfOptions.inPurgeable = true; // Tell to gc that whether it needs free
// memory, the Bitmap can be cleared
bfOptions.inInputShareable = true; // Which kind of reference will be
// used to recover the Bitmap data
// after being clear, when it will
// be used in the future
bfOptions.inTempStorage = new byte[32 * 1024];
File file = new File(path);
FileInputStream fs = null;
try {
fs = new FileInputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
if (fs != null) {
bitmap = BitmapFactory.decodeFileDescriptor(fs.getFD(), null,
bfOptions);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fs != null) {
try {
fs.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return bitmap;
}
}
If anybody can help me with this thank you in advance
Try this is working solution
1)PhotoGalaryActivity.java
public class PhotoGalaryActivity extends Activity {
private ImageAdapter imageAdapter;
private String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;
/**
* Overrides methods
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.photo_gallery);
final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media._ID;
#SuppressWarnings("deprecation")
Cursor imagecursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.arrPath = new String[this.count];
ids = new int[count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
ids[i] = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
arrPath[i] = imagecursor.getString(dataColumnIndex);
}
GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
imagecursor.close();
final Button selectBtn = (Button) findViewById(R.id.selectBtn);
selectBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i = 0; i < len; i++) {
if (thumbnailsselection[i]) {
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0) {
Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
} else {
Log.d("SelectedImages", selectImages);
Intent i = new Intent();
i.putExtra("data", selectImages);
setResult(Activity.RESULT_OK, i);
finish();
}
}
});
}
#Override
public void onBackPressed() {
setResult(Activity.RESULT_CANCELED);
super.onBackPressed();
}
/**
* Class method
*/
/**
* This method used to set bitmap.
* #param iv represented ImageView
* #param id represented id
*/
private void setBitmap(final ImageView iv, final int id) {
new AsyncTask<Void, Void, Bitmap>() {
#Override
protected Bitmap doInBackground(Void... params) {
return MediaStore.Images.Thumbnails.getThumbnail(getApplicationContext().getContentResolver(), id, MediaStore.Images.Thumbnails.MICRO_KIND, null);
}
#Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
iv.setImageBitmap(result);
}
}.execute();
}
/**
* List adapter
* #author tasol
*/
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.photo_gallery_item, null);
holder.imageview = (ImageView) convertView.findViewById(R.id.thumbImage);
holder.checkBox = (CheckBox) convertView.findViewById(R.id.itemCheckBox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.checkBox.setId(position);
holder.imageview.setId(position);
holder.checkBox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
int id = cb.getId();
if (thumbnailsselection[id]) {
cb.setChecked(false);
thumbnailsselection[id] = false;
} else {
cb.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
holder.imageview.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
int id = holder.checkBox.getId();
if (thumbnailsselection[id]) {
holder.checkBox.setChecked(false);
thumbnailsselection[id] = false;
} else {
holder.checkBox.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
try {
setBitmap(holder.imageview, ids[position]);
} catch (Throwable e) {
}
holder.checkBox.setChecked(thumbnailsselection[position]);
holder.id = position;
return convertView;
}
}
/**
* Inner class
* #author tasol
*/
class ViewHolder {
ImageView imageview;
CheckBox checkBox;
int id;
}
}
2)photo_gallery.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<ImageView android:id="#+id/thumbImage" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_centerInParent="true"
/>
<CheckBox android:id="#+id/itemCheckBox" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_alignParentRight="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
3)photo_gallery_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<ImageView android:id="#+id/thumbImage" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_centerInParent="true"
/>
<CheckBox android:id="#+id/itemCheckBox" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_alignParentRight="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
As there are many images you are loading you have to implement lazy loading in-order to increase app's performance for other low memory devices.
You can refer this library https://github.com/nostra13/Android-Universal-Image-Loader.
I hope this helps.
Related
From the many previous posts I can now have my app launch the Intent which will allow the users to select multiple images.
But the Intent presents both Gallery Images and Photos when I want Photos only.
The Gallery Images are of no use and merely confuse the user.
So my question is how to limit the images presented to the user for selection to Only the Photos and Not the Gallery.
The code I am currently using is as follows:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.galleryimagepicker);
lnrImages = (LinearLayout)findViewById(R.id.lnrImages);
btnAddPhotos = (Button)findViewById(R.id.btnAddPhotos);
btnAddPhotos.setOnClickListener(this);
btnSaveImages = (Button)findViewById(R.id.btnSaveImages);
btnSaveImages.setOnClickListener(this);
}
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.btnAddPhotos:
/*Intent intent = new Intent(GalleryImagePicker.this,CustomPhotoGalleryActivity.class);
startActivityForResult(intent,PICK_IMAGE_MULTIPLE);*/
Intent intent = new Intent(GalleryImagePicker.this,CustomPhotoGalleryActivity.class);
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent,PICK_IMAGE_MULTIPLE);
break;
case R.id.btnSaveImages:
if(imagesPathList != null)
{
if(imagesPathList.size() >= 1) {
//Toast.makeText(GalleryImagePicker.this, imagesPathList.size() + " no of images are selected", Toast.LENGTH_SHORT).show();
String[] stringArray = imagesPathList.toArray(new String[0]);
for (int i = 0; i < stringArray.length; i++){
String ThisImgPath = stringArray[i];
String PicName = ThisImgPath;
if (SystemIOFile.exists(PicName)) {
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inSampleSize = 4;
Bitmap bm = BitmapFactory.decodeFile(ThisImgPath, bmOptions);
Uri ThisUri = getImageUri(cntxt, bm);
bm = decodeBitmap(cntxt, ThisUri, bmOptions.inSampleSize);
Boolean HOLD = true;
}
Boolean HOLD = true;
}
}else{
Toast.makeText(GalleryImagePicker.this, imagesPathList.size() + " no of image are selected", Toast.LENGTH_SHORT).show();
}
}
else
{
Toast.makeText(GalleryImagePicker.this," no images are selected", Toast.LENGTH_SHORT).show();
}
break;
}
}
EDIT: CustomPhotoGalleryActivity code:
public class CustomPhotoGalleryActivity extends Activity {
private GridView grdImages;
private Button btnSelect;
private ImageAdapter imageAdapter;
private String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;
/**
* Overrides methods
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.custom_gallery);
grdImages = (GridView) findViewById(R.id.grdImages);
btnSelect = (Button) findViewById(R.id.btnSelect);
final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media._ID;
#SuppressWarnings("deprecation")
Cursor imagecursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.arrPath = new String[this.count];
ids = new int[count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
ids[i] = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
arrPath[i] = imagecursor.getString(dataColumnIndex);
}
imageAdapter = new ImageAdapter();
grdImages.setAdapter(imageAdapter);
imagecursor.close();
btnSelect.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i = 0; i < len; i++) {
if (thumbnailsselection[i]) {
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0) {
Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
} else {
Log.d("SelectedImages", selectImages);
Intent i = new Intent();
i.putExtra("data", selectImages);
setResult(Activity.RESULT_OK, i);
finish();
}
}
});
}
#Override
public void onBackPressed() {
setResult(Activity.RESULT_CANCELED);
super.onBackPressed();
}
/**
* Class method
*/
/**
* This method used to set bitmap.
* #param iv represented ImageView
* #param id represented id
*/
private void setBitmap(final ImageView iv, final int id) {
new AsyncTask<Void, Void, Bitmap>() {
#Override
protected Bitmap doInBackground(Void... params) {
return MediaStore.Images.Thumbnails.getThumbnail(getApplicationContext().getContentResolver(), id, MediaStore.Images.Thumbnails.MICRO_KIND, null);
}
#Override
protected void onPostExecute(Bitmap result) {
super.onPostExecute(result);
iv.setImageBitmap(result);
}
}.execute();
}
/**
* List adapter
* #author tasol
*/
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.custom_gallery_item, null);
holder.imgThumb = (ImageView) convertView.findViewById(R.id.imgThumb);
holder.chkImage = (CheckBox) convertView.findViewById(R.id.chkImage);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.chkImage.setId(position);
holder.imgThumb.setId(position);
holder.chkImage.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
int id = cb.getId();
if (thumbnailsselection[id]) {
cb.setChecked(false);
thumbnailsselection[id] = false;
} else {
cb.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
holder.imgThumb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
int id = holder.chkImage.getId();
if (thumbnailsselection[id]) {
holder.chkImage.setChecked(false);
thumbnailsselection[id] = false;
} else {
holder.chkImage.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
try {
setBitmap(holder.imgThumb, ids[position]);
} catch (Throwable e) {
}
holder.chkImage.setChecked(thumbnailsselection[position]);
holder.id = position;
return convertView;
}
}
/**
* Inner class
* #author tasol
*/
class ViewHolder {
ImageView imgThumb;
CheckBox chkImage;
int id;
}
}
Thanks
I have already tried the suggestions which are there on this site and they dont work for me. I will try to be very precise. I have a Custom gallery which displays images in gridview. The user can select multiple images from the gridview. Once the Gridview position is clicked the "Tick" icon is displayed on that position to notify user that the image has been selected. The problem is when i select an image and scroll the "Ticked" icon which was on the selected image appears on some other image.Here is the code.
public class CustomPhotoGalleryActivity extends Activity {
private GridView grdImages;
private Button btnSelect;
private ImageAdapter imageAdapter;
private String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;
private Cursor imagecursor = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.custom_gallery);
grdImages = (GridView) findViewById(R.id.grdImages);
btnSelect = (Button) findViewById(R.id.btnSelect);
final String[] columns = {MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID};
final String orderBy = MediaStore.Images.Media._ID;
imagecursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.arrPath = new String[this.count];
ids = new int[count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
ids[i] = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
arrPath[i] = imagecursor.getString(dataColumnIndex);
Log.e("arrPath", "" + arrPath[i]);
}
imageAdapter = new ImageAdapter(arrPath);
grdImages.setAdapter(imageAdapter);
btnSelect.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i = 0; i < len; i++) {
if (thumbnailsselection[i]) {
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0) {
Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
} else {
Log.d("SelectedImages", selectImages);
Intent i = new Intent();
i.putExtra("data", selectImages);
setResult(Activity.RESULT_OK, i);
finish();
}
}
});
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private String[] arrPath;
public ImageAdapter(String[] arrPath) {
this.arrPath = arrPath;
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getViewTypeCount() {
return arrPath.length;
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
View rootView = convertView;
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
rootView = mInflater.inflate(R.layout.custom_gallery_item, null);
holder.imgThumb = (ImageView) rootView.findViewById(R.id.imgThumb);
holder.chkImage = (ImageView) rootView.findViewById(R.id.chkImage);
rootView.setTag(holder);
} else {
holder = (ViewHolder) rootView.getTag();
}
holder.chkImage.setId(position);
holder.imgThumb.setId(position);
holder.imgThumb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
int id = holder.chkImage.getId()
if (thumbnailsselection[id]) {
holder.chkImage.setVisibility(View.GONE);
thumbnailsselection[id] = false;
} else {
holder.chkImage.setVisibility(View.VISIBLE);
thumbnailsselection[id] = true;
}
}
});
Picasso.with(CustomPhotoGalleryActivity.this)
.load(new File(arrPath[position]))
.resize(150, 150)
.centerCrop()
.into(holder.imgThumb);
return rootView;
}
}
class ViewHolder {
ImageView imgThumb;
ImageView chkImage;
int id;
}
}
do this it worked for me,
public class CustomPhotoGalleryActivity extends Activity {
private GridView grdImages;
private Button btnSelect;
private ImageAdapter imageAdapter;
private String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;
private Cursor imagecursor = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.custom_gallery);
grdImages = (GridView) findViewById(R.id.grdImages);
btnSelect = (Button) findViewById(R.id.btnSelect);
final String[] columns = {MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID};
final String orderBy = MediaStore.Images.Media._ID;
imagecursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.arrPath = new String[this.count];
ids = new int[count];
this.thumbnailsselection = new boolean[this.count];
ArrayList<Items> list=new ArrayList<>();
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
ids[i] = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
// arrPath[i] = imagecursor.getString(dataColumnIndex);
Items items=new Items();
items.setChkImage(youResourceId);
items.setThumbImageUrl(imagecursor.getString(dataColumnIndex));
items.setIsImageSelected(false);
list.add(items);
Log.e("arrPath", "" + arrPath[i]);
}
imageAdapter = new ImageAdapter(list);
grdImages.setAdapter(imageAdapter);
btnSelect.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i = 0; i < len; i++) {
if (thumbnailsselection[i]) {
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0) {
Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
} else {
Log.d("SelectedImages", selectImages);
Intent i = new Intent();
i.putExtra("data", selectImages);
setResult(Activity.RESULT_OK, i);
finish();
}
}
});
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private String[] arrPath;
private ArrayList<Items> list;
public ImageAdapter(ArrayList<Items> list) {
this.arrPath = arrPath;
this.list=list;
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getViewTypeCount() {
return arrPath.length;
}
public int getCount() {
return list.size();
}
public Items getItem(int position) {
return list.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView= mInflater.inflate(R.layout.custom_gallery_item, null);
holder.imgThumb = (ImageView) convertView.findViewById(R.id.imgThumb);
holder.chkImage = (ImageView) convertView.findViewById(R.id.chkImage);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if(list.get(postion).isImageSelected()){
holder.chkImage.setVisibility(View.VISIBLE);
}else{
holder.chkImage.setVisibility(View.GONE);
}
holder.imgThumb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
int id = holder.chkImage.getId()
if (list.get(postion).isImageSelected()) {
holder.chkImage.setVisibility(View.GONE);
list.get(postion).setIsImageSelected(false);
} else {
holder.chkImage.setVisibility(View.VISIBLE);
list.get(postion).setIsImageSelected(true);
}
notifyDataSetChanged();
}
});
Picasso.with(CustomPhotoGalleryActivity.this)
.load(list.get(position).getThumbImageUrl())
.resize(150, 150)
.centerCrop()
.into(holder.imgThumb);
return convertView;
}
}
class ViewHolder {
ImageView imgThumb;
ImageView chkImage;
int id;
}
}
public class Items {
int chkImage;
String thumbImageUrl;
boolean isImageSelected;
public int getChkImage() {
return chkImage;
}
public void setChkImage(int chkImage) {
this.chkImage = chkImage;
}
public String getThumbImageUrl() {
return thumbImageUrl;
}
public void setThumbImageUrl(String thumbImageUrl) {
this.thumbImageUrl = thumbImageUrl;
}
public boolean isImageSelected() {
return isImageSelected;
}
public void setIsImageSelected(boolean isImageSelected) {
this.isImageSelected = isImageSelected;
}
}
I use the sample code in Multi-choice GridView to create a custom gridview include checkbox and image control.
I hope to click a button to check all items in the custom gridview, how can I do ? Thanks!
public class GridView_Activity extends Activity {
private int count;
private Bitmap[] thumbnails;
private boolean[] thumbnailsselection;
private String[] arrPath;
private ImageAdapter imageAdapter;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final String[] columns = { MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media._ID;
Cursor imagecursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
null, orderBy);
int image_column_index = imagecursor
.getColumnIndex(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.thumbnails = new Bitmap[this.count];
this.arrPath = new String[this.count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor
.getColumnIndex(MediaStore.Images.Media.DATA);
thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail(
getApplicationContext().getContentResolver(), id,
MediaStore.Images.Thumbnails.MICRO_KIND, null);
arrPath[i] = imagecursor.getString(dataColumnIndex);
}
GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
imagecursor.close();
final Button selectBtn = (Button) findViewById(R.id.selectBtn);
selectBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i = 0; i < len; i++) {
if (thumbnailsselection[i]) {
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0) {
Toast.makeText(getApplicationContext(),
"Please select at least one image",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(),
"You've selected Total " + cnt + " image(s).",
Toast.LENGTH_LONG).show();
Log.d("SelectedImages", selectImages);
}
}
});
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.galleryitem, null);
holder.imageview = (ImageView) convertView
.findViewById(R.id.thumbImage);
holder.checkbox = (CheckBox) convertView
.findViewById(R.id.itemCheckBox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.checkbox.setId(position);
holder.imageview.setId(position);
holder.checkbox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
CheckBox cb = (CheckBox) v;
int id = cb.getId();
if (thumbnailsselection[id]) {
cb.setChecked(false);
thumbnailsselection[id] = false;
} else {
cb.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
holder.imageview.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file://" + arrPath[id]),
"image/*");
startActivity(intent);
}
});
holder.imageview.setImageBitmap(thumbnails[position]);
holder.checkbox.setChecked(thumbnailsselection[position]);
holder.id = position;
return convertView;
}
}
class ViewHolder {
ImageView imageview;
CheckBox checkbox;
int id;
}
}
Main.xml
<Button
android:id="#+id/selectBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:minWidth="200dip"
android:text="#string/mBtnSelect" />
<GridView
android:id="#+id/PhoneImageGrid"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#id/selectBtn"
android:columnWidth="90dp"
android:gravity="center"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" />
</RelativeLayout>
You can just call (from adapter):
Arrays.fill(thumbnailsselection, true);
notifyDataSetChanged();
this is my code which i used is used to show gallery in gridview but shows all pictures in gridview like this
Sample Link 1 image but i want to show gallery like this
http://www.google.com.pk/imgres?hl=en&biw=878&bih=598&tbm=isch&tbnid=17fWAXUGZ3USxM:&imgrefurl=http://www.maclife.com/article/howtos/sync_your_android_phone_your_mac?page=0,2&docid=FGf7ur67XeENhM&imgurl=http://www.maclife.com/files/u32/1201_videogallery_480.jpg&w=480&h=854&ei=M9FbUY_aNsrvswburIDABw&zoom=1&iact=hc&vpx=664&vpy=144&dur=1467&hovh=300&hovw=168&tx=123&ty=203&page=1&tbnh=135&tbnw=75&start=0&ndsp=19&ved=1t:429,r:18,s:0,i:133
folder view so when user clicks any folder it's content is shown in gridview what do i do?
This is my code.
public class AndroidCustomGalleryActivity extends Activity {
private int count;
private Bitmap[] thumbnails;
private boolean[] thumbnailsselection;
private String[] arrPath;
private ImageAdapter imageAdapter;
Cursor imagecursor;
int image_column_index;
Button selectBtn;
ProgressDialog myProgressDialog = null;
DataBase db;
Handler handle = new Handler(){
public void handleMessage(android.os.Message msg) {
if (msg.what == 1)
{
hideProgress();
GridView imagegrid = (GridView) findViewById
(R.id.PhoneImageGrid);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
}
else if (msg.what == 3)
{
hideProgress();
AndroidCustomGalleryActivity.this.finish();
}
else if (msg.what == 2)
{
hideProgress();
}
super.handleMessage(msg);
};
};
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery);
showProgress();
new Thread() {
public void run() {
try
{
loadFeed();
android.os.Message alertMessage = new android.os.Message();
alertMessage.what = 1;
handle.sendMessage(alertMessage);
}
catch(Exception e)
{
android.os.Message alertMessage = new android.os.Message();
alertMessage.what = 2;
handle.sendMessage(alertMessage);
}
}
}.start();
selectBtn = (Button) findViewById(R.id.selectBtn);
selectBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
showProgress();
new Thread() {
public void run() {
try
{
SelecedtPhotos();
android.os.Message alertMessage = new
android.os.Message();
alertMessage.what = 3;
handle.sendMessage(alertMessage);
}
catch(Exception e)
{
android.os.Message alertMessage = new
android.os.Message();
alertMessage.what = 2;
handle.sendMessage(alertMessage);
}
}
}.start();
}
});
}
public static byte[] getBitmapAsByteArray(Bitmap bitmap) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0, outputStream);
return outputStream.toByteArray();
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.galleryitem,
null);
holder.imageview = (ImageView)
convertView.findViewById
(R.id.thumbImage);
holder.checkbox = (CheckBox) convertView.findViewById
(R.id.itemCheckBox);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder) convertView.getTag();
}
holder.checkbox.setId(position);
holder.imageview.setId(position);
holder.checkbox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
CheckBox cb = (CheckBox) v;
int id = cb.getId();
if (thumbnailsselection[id])
{
cb.setChecked(false);
thumbnailsselection[id] = false;
}
else
{
cb.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
/*holder.imageview.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file://" +
arrPath[id]), "image/*");
startActivity(intent);
}
});*/
holder.imageview.setImageBitmap(thumbnails[position]);
holder.checkbox.setChecked(thumbnailsselection[position]);
holder.id = position;
return convertView;
}
}
class ViewHolder {
ImageView imageview;
CheckBox checkbox;
int id;
}
public void loadFeed()
{
final String[] columns = { MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media._ID;
imagecursor = managedQuery
(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
columns, null,null, orderBy);
image_column_index = imagecursor.getColumnIndex
(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.thumbnails = new Bitmap[this.count];
this.arrPath = new String[this.count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++)
{
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex
(MediaStore.Images.Media.DATA);
thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail
(getApplicationContext().getContentResolver(),
id,MediaStore.Images.Thumbnails.MICRO_KIND,
null);
arrPath[i]= imagecursor.getString(dataColumnIndex);
}
you know the images which you are going to show in your grid view . so initially get design the custom layout with four images like folder with four image views. then load your particular folder images thumbnails.
Hope this will help you.
android how do i save this selected images in database? http://vikaskanani.wordpress.com/2011/07/20/android-custom-image-gallery-with-checkbox-in-grid-to-select-multiple/ can anyone tell me how to save this images in database???
public class AndroidCustomGalleryActivity extends Activity {
private int count;
private Bitmap[] thumbnails;
private boolean[] thumbnailsselection;
private String[] arrPath;
private ImageAdapter imageAdapter;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final String[] columns = { MediaStore.Images.Media.DATA,
MediaStore.Images.Media._ID };
final String orderBy = MediaStore.Images.Media._ID;
Cursor imagecursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
this.count = imagecursor.getCount();
this.thumbnails = new Bitmap[this.count];
this.arrPath = new String[this.count];
this.thumbnailsselection = new boolean[this.count];
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail(
getApplicationContext().getContentResolver(), id,
MediaStore.Images.Thumbnails.MICRO_KIND, null);
arrPath[i]= imagecursor.getString(dataColumnIndex);
}
GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
imagecursor.close();
final Button selectBtn = (Button) findViewById(R.id.selectBtn);
selectBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
final int len = thumbnailsselection.length;
int cnt = 0;
String selectImages = "";
for (int i =0; i<len; i++)
{
if (thumbnailsselection[i]){
cnt++;
selectImages = selectImages + arrPath[i] + "|";
}
}
if (cnt == 0){
Toast.makeText(getApplicationContext(),
"Please select at least one image",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(),
"You've selected Total " + cnt + " image(s).",
Toast.LENGTH_LONG).show();
Log.d("SelectedImages", selectImages);
}
}
});
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(
R.layout.galleryitem, null);
holder.imageview = (ImageView) convertView.findViewById(R.id.thumbImage);
holder.checkbox = (CheckBox) convertView.findViewById(R.id.itemCheckBox);
convertView.setTag(holder);
}
else {
holder = (ViewHolder) convertView.getTag();
}
holder.checkbox.setId(position);
holder.imageview.setId(position);
holder.checkbox.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
CheckBox cb = (CheckBox) v;
int id = cb.getId();
if (thumbnailsselection[id]){
cb.setChecked(false);
thumbnailsselection[id] = false;
} else {
cb.setChecked(true);
thumbnailsselection[id] = true;
}
}
});
holder.imageview.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file://" + arrPath[id]), "image/*");
startActivity(intent);
}
});
holder.imageview.setImageBitmap(thumbnails[position]);
holder.checkbox.setChecked(thumbnailsselection[position]);
holder.id = position;
return convertView;
}
}
class ViewHolder {
ImageView imageview;
CheckBox checkbox;
int id;
}
}
don't save the image , Just save image path on the database.
The easiest ways :
1-don't save the image , Just save image path on the database as string value .
2-convert the image to bitmap and save it in the database.
I prefer the first solution .