Setting the gallery image in imageview - android

I am making the same activity as in android to set the wallpaper from the given gallery.
I have a gallery with 50 images when gallery stop scrolling a center image comes i want to show that image in imageview.
g.setOnItemSelectedListener(new OnItemSelectedListener()
{
public void onItemSelected(AdapterView<?> arg0, View arg1,
final int arg2, long arg3)
{
imageView.setImageResource(mImageIds[arg2]);
}
public void onNothingSelected(AdapterView<?> arg0)
{
Toast.makeText(WallpaperThemeChoose.this, "NOTHING",
Toast.LENGTH_SHORT).show();
}
});
while scrolling the imageview set every image which are passing in gallery. So pause for sometime and then start i mean it stick for sometime while scrolling
I don't want to show all images which are passing but only that image which comes to center when scrolling stop.

Got the solution by setting g.setCallbackDuringFling(false);

Related

Imageloader inside for loop in android

I need to loop the image load Google map marker with images. So, I am using custom marker( there will more than 50 different marker images). I am using Universal Image loader for loading the image on Image view. Once the image is loaded on the Image view I am converting that view into marker.
My problem is ImageLoadingListener is not getting looped. But if I am placing the breakpoint then It is working fine.
final View marker = ((LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.custom_marker_layout, null);
final RoundedImageView imv_Logo = (RoundedImageView) marker.findViewById(R.id.imv_size);
bitmapArray.clear();
for (int i = 0; i < list_image_url.size(); i++) {
imageLoader.displayImage(list_image_url.get(i), imv_Logo, options,
new ImageLoadingListener() {
#Override
public void onLoadingStarted(String arg0, View arg1) {
}
#Override
public void onLoadingFailed(String arg0, View arg1,
FailReason arg2) {
imv_Logo.setImageDrawable(getResources().getDrawable(R.drawable.image_not_found));
bitmapArray.add(createDrawableFromView(Establishment.this, marker));
if (bitmapArray.size() == list_image_url.size()) {
loadmarker(progressDialog);
}
}
#Override
public void onLoadingComplete(String arg0, View arg1,
Bitmap arg2) {
bitmapArray.add(createDrawableFromView(Establishment.this, marker));
if (bitmapArray.size() == list_image_url.size()) {
loadmarker(progressDialog);
}
}
#Override
public void onLoadingCancelled(String arg0, View arg1) {
}
});
}
Could any one help me on this?
I can't guarantee it, but I guess the problem is the following. When you tell the ImageLoader to load an image into an ImageView, it will keep an internal HashMap to track which image will be displayed in which ImageView. What you are actually doing here, is asking the ImageLoader to download different images but to display them in the same ImageView.
imageLoader.displayImage(list_image_url.get(i), imv_Logo,....
So each time you call displayImage, it will actually update the Map and I guess that ImageLoader is smart enough to cancel previous downloads. So in the end, you only download one image.
While in debug mode, the download will have time to occur between twi calls to displayImage, therefore you will see multiple calls to onLoadingComplete.
What would make sense is to have several ImageViews.

Gridview image issue (Edge image not using CustomImageView)

I have an odd issue. Basically I use a custom image view which I overwrite the draw method. The draw method just writes the tag of the image object.
I have a grid of all these custom image views. The issue stems from the edge image that it renders. Basically the image does not display any text (just the image) but when I scroll out and back again the text reappears for the image. I am just asking whether there is any way to actually render the text of the edge image and not have to scroll off screen and back.
Here is the getView code for my image adaptor:
#Override
public View getView(int arg0, View arg1, ViewGroup arg2) {
// TODO Auto-generated method stub
CustomImageView tmp;
if (arg1 == null) {
tmp = new CustomImageView("", cx, true);
} else {
tmp = (CustomImageView) arg1;
}
int Dimens = (int) getResources().getDimension(R.dimen.gridParam);
tmp.setPadding(3, 3, 3, 3);
tmp.setLayoutParams(new GridView.LayoutParams(Dimens, Dimens));
tmp.setTag("TESTIMG" + arg0);
tmp.setImageResource(mThumbIds[arg0]);
return tmp;
}
}
And here is the code for my gridview, its just a standard creation.
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdaptor(this));
Hopefully you can help me out. Just curious as to why this issue is occuring, maybe I left out something.
Any help would be appreciated. Thanks!

listview scrolling top can't set index 0 of

when scroll to and I click item list to set the fist index it is not set .what ?
public void onItemClick(AdapterView<?> arg0, View arg1, int index, long arg3) {
// TODO Auto-generated method stub
//ImageView imgNew = (ImageView) arg1.findViewById(R.id.imgIcon);
//imgNew.setImageResource(R.drawable.push);
ImageView imgOld = (ImageView) listView1.getChildAt(0).findViewById(R.id.imgIcon);
imgOld.setImageResource(R.drawable.push);
}
If I'm not mistaken, you're trying to change an image once it's been clicked. Try doing something like this:
ImageView imgOld = (ImageView) listView1.getChildAt(index).findViewById(R.id.imgIcon);
If you have free time and want to save your time (in the future), watch Google I/O 2010 - The world of ListView (about 1 hour).
When I started to code in Android, I spent lots of time on this stackoverflow with ListView. Then someone pointed me to that video, and it was be easier :-)
I don't understand the issue but just in case
getChildAt(0)
0 index means first visible item on the screen

How to highlight item currently selected in a gallery?

I've come with a problem. I need to highlight the selected item within a Gallery. I've tried changing the appearance of the selected view through this method:
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
The second parameter of that view is the current selected view, and I'm trying in this case, increase the size of the text. However this doesn't work, not even if I call invalidate in the selected item or in the entire Gallery.
This is the code I use to change the textview text size
TextView textview = (TextView)view;
textview.setTextSize(50, TypedValue.COMPLEX_UNIT_SP);
textview.invalidate();
Do you know how to do this? Thanks
Your implementation works, but it does not return the text size to normal once the item becomes unselected - the text stays larger size.
This should fix it:
private View lastview;
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
if (lastview != null) lastview.setBackgroundColor(0xFFFFFFFF);
lastview = arg1;
arg1.setBackgroundColor(0xFFFF0000);
}
You can set text size instead of color, or do whatever you want to the style of it.
Try StateListDrawable - looks apt for your situation.
UPDATE: You have reversed the parameters in setTextSize. It should be:
textview.setTextSize(TypedValue.COMPLEX_UNIT_SP, 50);

Android: Animation in Gallery View?

When I use the Gallery widget, how do I get the images to say scale up & glow on being selected and scaled down & un-glow on being unselected?
All tutorials I've seen have this effect but I'm not able to see it...
Is there some kind of an animation that I have to attach to the Gallery?
Hope this is helpful. I manage to "simulate" the shrink/grow solution with the Gallery widget. Since they removed the getScale(), things get a little bit complicated. I think that this it's not the best solution at all, but at least I can live with it.
What I have found is that Gallery manages the focus EXTREMELY BAD. So, the first approach was to add a focus change listener on the ImageView displayed, but no luck there. Focus is a MESS there... in terms that, the selected image it's not the currently focused view. I have sent a mail to android-developers mailing list about some error on API doc (regarding the focusSearch()method and some focus contants).
Here's my solution to this problem:
Build an animation resource to 'grow' the image:
<?xml version="1.0" encoding="utf-8"?>
<scale xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXScale="1.0"
android:toXScale="1.10"
android:fromYScale="1.0"
android:toYScale="1.10"
android:duration="300"
android:pivotX="50%"
android:pivotY="50%"
android:interpolator="#android:anim/accelerate_decelerate_interpolator"
android:fillAfter="false"/>
If you don't get what that means then you should proceed to read this
That will be our 'grow' effect, and you will need to save it in: res/anim/grow.xml or whatever name it suites you (but always in res/anim dir).
You can follow the resource guide from here to create a Gallery view. The ImageAdapter builds an ImageView every time that the Gallery object calls getView(). One workaround you could implement is adding a line to the getView() method that identifies a View with a position, this way:
...
i.setId(position);
...
With that line added to the getView() method of the ImageAdpater object, you can then unequivocally identify that view within a listener, for instance:
g.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected (AdapterView<?> parent, View v, int position, long id) {
Animation grow = AnimationUtils.loadAnimation(YourActivity.this, R.anim.grow);
View sideView = parent.findViewById(position - 1);
if (sideView != null)
((ImageView)sideView).setLayoutParams(new Gallery.LayoutParams(150, 100));
sideView = parent.findViewById(position + 1);
if (sideView != null)
((ImageView)sideView).setLayoutParams(new Gallery.LayoutParams(150, 100));
v.startAnimation(grow);
v.setLayoutParams(new Gallery.LayoutParams(170, 150));
}
public void onNothingSelected (AdapterView<?> parent) {
System.out.println("NOTHING SELECTED");
}
});
NOTE: You may notice that all the values from animation and from layout parameters has been choosen by me at hand. This is because i'm not going to clean code for you. And, this is just a workaround the BAD focus issue with this widget or the android view system. If focus were OK, then, all you need to do is set a focus change listener that makes the gros/shrink when it got focus/unfocused.
I hope this may help you to find a way around for your problem,
Regards,
New EDIT: This is the listener I have set, I also added the line i.clearAnimation() in the getView() method:
private class SelectListener implements AdapterView.OnItemSelectedListener {
private Animation grow;
private int last;
public SelectListener() {
grow = AnimationUtils.loadAnimation(RouteGallery.this, R.anim.grow);
last = 0;
}
public void onItemSelected (AdapterView<?> parent, View v, int position, long id) {
View sideView = parent.findViewById(last);
if (sideView != null && last != position)
sideView.clearAnimation();
v.startAnimation(grow);
last = position;
}
public void onNothingSelected (AdapterView<?> parent) {
}
}
You need to use an ImageSwitcher. The ImageSwitcher has methods for setting the in and out animations (when image is selected and deselected, or selected and replaced).
The following link has a good tutorial on how to use it in conjunction with the Gallery.
I implemented a similar animation like this:
final Animation shrink = AnimationUtils.loadAnimation(activity, R.anim.shrink);
shrink.setFillAfter(true);
gallery.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// This iterates through the views which are currently displayed on screen.
for (int k=0; k<gallery.getChildCount(); k++){
// Do whatever else you want, here.
// This is how you get a particular element of a view
ImageView background = (ImageView) gallery.getChildAt(k).findViewById(R.id.menu_item_background);
//clear animation
gallery.getChildAt(k).clearAnimation();
}
// Scale the selected one
view.startAnimation(shrink);
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {}
});

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