Android: Programmatically animate between images in Gallery widget?

Just call the key press handler for the gallery directly: public boolean onKeyDown(int keyCode, KeyEvent event) i. E Gallery gallery = ((Gallery) findViewById(R.id. Gallery)); gallery.

OnKeyDown(KeyEvent. KEYCODE_DPAD_LEFT, new KeyEvent(0, 0)).

– Seymour Cakes Jan 26 at 5:38 Doesn't seem to work at all on my HTC Desire. Just using it as a normal Gallery, triggered by a button press – Kurru Feb 23 at 1:18.

You can Animate using dispatchKeyEvent or calling onFling directly. Here is sample code for dispatchKeyEvent: KeyEvent evtKey = new KeyEvent(0, KeyEvent. KEYCODE_DPAD_RIGHT); dispatchKeyEvent(evtKey).

Use gallery. SetSelected(int); Here is a simple example. Public class Splash extends Activity { ArrayList objects = new ArrayList(); Gallery g; int I = 0; @Override public void onCreate(Bundle icicle) { super.

OnCreate(icicle); setContentView(R.layout. Photos); g = (Gallery) findViewById(R.id. Gallery); objects.

Add(getResources(). GetDrawable(R.drawable. Icon)); objects.

Add(getResources(). GetDrawable(R.drawable. Icon)); objects.

Add(getResources(). GetDrawable(R.drawable. Icon)); objects.

Add(getResources(). GetDrawable(R.drawable. Icon)); objects.

Add(getResources(). GetDrawable(R.drawable. Icon)); objects.

Add(getResources(). GetDrawable(R.drawable. Icon)); g.

SetAdapter(new CustomAdapter(this, objects)); g. SetOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView arg0, View arg1, int arg2, long arg3) { Log. I("", "selected " + arg2); } @Override public void onNothingSelected(AdapterView arg0) {} }); } @Override public void onBackPressed() { g.

SetSelection(i++); } private class CustomAdapter extends BaseAdapter { private Context mCtx; private List objects; public int getCount() { return this.objects.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public CustomAdapter(Context context, ArrayList objects) { super(); mCtx = context; this. Objects = objects; } @Override public View getView(int position, View convertView, ViewGroup parent) { ImageView row = (ImageView) convertView; if (row == null) { row = new ImageView(mCtx); row. SetBackgroundDrawable(objects.

Get(position)); } return row; } } }.

Thank you for your response, however your solution doesn't appear to provide animation when changing between selected images. Animation is a requirement. – bdls Apr 28 '10 at 22:39.

In the end I wrote my own version of the Gallery widget with the help of the code at this site. I then wrote my own method which uses mFlingRunnable. StartUsingDistance(distance); Now I can programmatically animate the gallery between images.

I was looking through the Gallery source to see if I could get this feature. It looks like something is possible with this code. However I gave up before I could get it working.It seems like I wasn't passing in the correct coordinates so res always returned false.

Would return true if it worked. Just posting this here in-case someone else wants to give a go at fixing it!(Please post your solution if you manage it!) Rect rect = new Rect(); gallery. Get int x = rect.centerX()+getWindowManager().

GetDefaultDisplay().getWidth(); int y = rect.centerY(); MotionEvent event = MotionEvent. Obtain(100, 100, MotionEvent. ACTION_DOWN, x, y, 0); timesGallery.

OnDown(event); boolean res = timesGallery. OnSingleTapUp(null).

Just call the key press handler for the gallery directly.

You can Animate using dispatchKeyEvent or calling onFling directly.

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