Android :: Scroll Item In A Gallery Programmically?

Feb 23, 2009

I have looked at the Gallery widget api,

http://code.google.com/android/reference/android/widget/Gallery.html

But can you please tell me how can I scroll an item in the Gallery programmically? e.g. i want to write code to scroll the gallery by 1 item at a time.

Android :: Scroll item in a Gallery programmically?


Android :: Manually / Programatically Scroll To A Specific Item In Gallery?

Apr 9, 2010

I am currently using a modified Gallery widget to display real-time events coverflow-style. What I now need is some Method to scroll to a specific item within the Gallery. Such method IS available within frameworks/base/core/java/android/ widget/Gallery.java as scrollToChild but is declared as private. Do you know of any manual way to move/scroll around a Gallery / List Widget?

Current workaround would be to inject DPAD_RIGHT using the Instrumentation Framework, which is as really ugly solution.

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Android : Programmically Disable All Menu Item In My Activity?

Dec 16, 2009

In android, I create my menu item like this?

public boolean onCreateOptionsMenu(Menu menu) {

menu.add(0, 0, 0, "Menu1");
menu.add(0, 1, 0, "Menu2");
return true;}
How can I set all the menu item disabled programmically (in another part of the code in my activity, not in onCreateOptionsMenu() method itself)?

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Android :: How To Scroll Up When Choose Some Item At Item List?

Nov 20, 2010

I jave a list of item (linearlayout inside a scrollview where i add buttons vertically to linearlayout dynamically from the java code)i need when i click on one button the item moves up (scroll up) , to make the item at the first of the screen

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Android :: Scroll To The New Added Item In ListView

May 7, 2010

My application show a ListView with a button which allow user to add an element. When the user clicks on this button, another Activity is started to allow user to populate the new element. When the add is finished, we return to the previous Activity with the ListView and I would like to scroll to the new element.

Note that this element is not necessarily at the end of the ListView because there is an "order by" when I retrieve the datas from the database. I know I need the cursor position of the new element to make the ListView scrool to it, but the only info I have about this element is its id, so how to convert this id to cursor position ? Do I have to loop on the cursor to find the position?

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Android :: ListView Scroll To Selected Item

Aug 17, 2010

I have a ListView with an edit text and a button below it. When I click on a listView item the keyboard appears and push up the edit text and the button. I want the list to scroll to the selected item.

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Android :: Android Gallery - How To Detect Item Which Shifted In Gallery?

Jul 7, 2010

I am using a Gallery based Coverflow, as suggested here.Is there an event that can be caught, which indicates that a single shift (either left or right) has been made in my gallery/cover flow? To be clear, if I gave the gallery a decent swipe and my center (selected) image has changed 8 times, I would like to catch this event 8 times. OnFling() just indicates a single swipe - regardless how many items have shifted.Getting getSelectedItemPosition() before and after the swipe doesn't help since I need to do some work on every shift.It will also be nice while I am at it, to get the direction of the shift - either right or left.

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Android :: List Item Background Is Changing On Scroll

Mar 10, 2010

I have a background color applied to a ListView but everytime the list is scrolled the background color changes back to the system default (black). When the scrolling stops the color goes back to @color/window_background.The style is applied in AndroidManifest.xml:<activity android:name=".event.EventList" android:theme="@style/CKButtons"></activity> and my ListView looks like this: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
><ListView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/android:list"/>
<TextView
android:id="@+id/android:empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="@string/eventlist_no_items"/>
</LinearLayout>How can I prevent this from happening?

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Android :: How To Scroll Gallery All Way To Left?

Sep 17, 2009

Can't figure out if it's possible to programatically scroll Gallery to the left so that first item in the gallery is all the way to the left and not in the center of a gallery. Must be simple but I just can't figure it out.

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Android :: Multiple Gallery Widgets Won't Scroll

Feb 18, 2010

Does anyone have any solution for placing multiple Galleries on a layout? The problem is only one Gallery will scroll with multiple Galleries on a layout. The other Galleries won't work. Anyone know a workaround?

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Android :: Change Scroll Speed In Gallery?

Jul 16, 2010

Can i change the scroll speed in gallery view? i want a constant change in the gallery views irrespective of the speed the user fligs it.

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Android : Possible To Scroll A Gallery Widget Pragmatically?

Dec 27, 2009

Is it possible to scroll a Gallery widget pragmatically? I see Gallery inherits scrollTo() and scrollBy(), but that scrolls the entire widget itself, not its content.

Is there some obvious way to do this that I'm missing, my searches are coming up empty? I don't want to have to do a copy/paste/hack from git hub if possible.

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Android : How To Scroll Gallery Widget Manually

Mar 13, 2009

I'm working on a little Player with Playlist and use the Gallery Widget to visualize the Playlist. I tried to scroll the Gallery Widget manual to an active item, but the Widget don't support any functions to do this. There are several methods in the Gallery.java class

movePrevious() moveNext() scrollToChild( int pos ) but the visibility of this methods is default or private. So i can't override this functions, if I Inherit from Gallery class.

can any one please help for a solution to scroll the Gallery manual?

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Android :: Tell What Item Is Selected When Only Dragging Gallery Around?

Aug 12, 2010

The default gallery widget only provides events for when items are clicked, but is there any way to tell what item is selected when only dragging the gallery around?

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Android :: Move First Gallery Item To Left?

Mar 22, 2010

Looking at the Gallery example in the link http://developer.android.com/guide/tutorials/views/hello-gallery.html I see that the first item in the gallery is placed at Center Is there a way to move the first gallery item to left?

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Android :: Want To Set Custom Border For Gallery Item / How To Do That

Oct 10, 2010

I want to set custom border for gallery item.

When i zoom a image which is selected in gallery,I want to change border only for selected item.

How to do that?

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Android :: Gallery Program To Scroll Through Photos Like Iphone Does?

Jun 27, 2009

Is there a gallery program that allows you to scroll through your photos like the Iphone does?...Its the one thing thats keeping me from being 100 percent happy with my phone.

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Android :: Droid Gallery : Scroll Animation Programmatically?

Sep 26, 2010

I'm trying to implement scroll animation for gallery...programmatically.

tried with setSelection(int pos, Boolean animate) and it's not working.

is there anyway to override setSelection() method.

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Android :: Set Selected State Of An Item In A Gallery (correct Way)?

Jul 24, 2010

I have a gallery that displays TextViews where the background of each view is the following code...

This selector work just fine for the state_pressed and default (idle) states, but the selected item state is never displayed. I REALLY do not want to force the background of the selected item by changing the background of the view when the onItemSelected event is called. What is the correct state or correct way to get the TextView background to be set properly. Is the selected (center) view in the gallery not really selected? Is there some other state I should put in the selector drawable xml?

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Android : Add Menu Item To Gallery's Share By Code

Aug 1, 2009

I must to new a thread. I know how to implement this issue by Menuifest.xml, see also: http://groups.google.com/group/android-developers/browse_thread/threa...

But my question is how to add share menu of Gallery by java code not Menuifest.xml. My code is as below:

code:.........

But registerReceiver always return null, and there is no menu added to Gallery's Share.

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Android : How To Add Share Menu Item To Gallery By Code

Aug 1, 2009

I know how to implement this issue by Menuifest.xml, see also:

Google Android Developer Group related issue

But my question is how to add share menu of Gallery by java code not Menuifest.xml.

My code is as below:

CODE:........

But registerReceiver always return null, and there is no menu added to Gallery's Share.

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Android :: Gallery Item Width Vs Gallery Width

Jan 10, 2010

I have a Gallery with a set of images that was downloaded at run time.I followed the example here:http://www.anddev.org/a_androidwidgetgallery_-_example-t332.html but instead of using i.setImageResource(this.myImageIds[position]);I used i.setImageBitmap(bitmaps.get(position));This doesn't fill the entire width of the screen, only as much as the width specified here:i.setLayoutParams(new Gallery.LayoutParams(150, 150)); When I increase this number, the item scales with it instead of showing more images per the example. I've even tried to scale the images before adding them to the set. Not sure what I'm missing, or where other examples of this might be. Any help would be great.

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General :: Every Item In ICS Gallery Duplicated

Jun 11, 2012

Every image and video in the stock Android ICS Gallery app is displayed twice, how can I fix this?

This only happened a couple of days ago. I know the items themselves are not duplicated because I've checked with QuickPic, Root Explorer and Windows Explorer.

I have a Nexus S running a rooted build of stock 4.0.4. I've tried clearing cache and data of the gallery app to no avail.

SOLUTION: Go to Settings > Apps > All. Find Media Storage and then Clear Data. Reboot the phone (I had to do it twice) and it will clear your thumbnails, recreate them and put everything back to normal.

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Android :: How To Programmically Add A New Contact

Feb 6, 2009

I am trying to programmically add a new contact in android.

What I did is this:

CODE:...................

But as soon as I kill and restart my emulator, the contact that I add is gone.

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Android :: Example To Layout Elements Programmically?

Mar 9, 2009

From http://d.android.com/guide/topics/ui/declaring-layout.html, it said "Instantiate layout elements at runtime. Your application can create View and ViewGroup objects (and manipulate their properties) programmatically."

Can you please tell me how/where I can find example for that?

For example, how can I convert the following layout into Java code of my MyWidget. So that when I put "<MyWidget...>" in my layout xml file, it will automatically build a Gallery inside the MyWidget? code...

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Android : Way To Set Width / Height Of An ImageView Programmically?

Apr 26, 2009

Can you please tell me how can i set the width and height of an ImageView programmically in java code (not layout xml file)? I tried setMinimumWidth/setMinimumHeight, but that does not work. I have looked at the view in HierarchyView, it still said the width to be 80 and height to be 100. And that is not the value I set.

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Android :: How Can Read App Version In Manifest File Programmically

Sep 25, 2010

In android manifest file, there is a field specifies application version. if I can read that value programmically in my android code?

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Android :: How Can I Query Number Of Unread SMS In Phone Programmically

Jul 14, 2009

Can you please tell me how can i query the number of unread SMS in android programmically?

How can I implement the SMS unread count like this link: http://android.kanokgems.com/sms-unread-count/

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Android :: Scroll Down - Text Area Get Focus Scroll Little Bit And Also Display Bottom Buttons

Apr 19, 2010

I have text area and and down to that "ok" and "cancel" button. when i click on text area keyboard appear and focus on the text area and buttons get hide behind the keyboard.

I want when text area get focus scroll a little bit and also display the bottom buttons while text area id selected.

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Android :: Why Does TextView.setText Cause Enclosing Scroll View To Scroll?

Jun 24, 2010

I've got this odd problem which is happening on 1.6, 2.2, and a MyTouch 3G Slide (which is API #7, and listed as "2.1-Update1" in the Android Device Chooser). If anyone can explain what I'm doing wrong & how to fix it (or possibly confirm that this is an Android bug)The basic idea for my app is to make a stopwatch-sort of thing, in that the user can tap a button to start a timer, then tap it again to stop (pause) the timer; further taps alternate between resuming the timer and pausing the timer.I've got a top-level ScrollView which contains a RelativelLayout, which contains a bunch of widgets. The first widget is a HUGE button (so that it's easy to press), which pushes all my other widgets below the bottom of the screen. This is intentional, as I want to rely on the ScrollView (and an on-screen reminder to the user) to make the rest of the input options available.I've got a simple state-machine type setup, where mState is the current mode (STATE_ TIMER_ NOT_ STARTED before the user presses any buttons, RUNNING after the first press, and then PAUSED after the second, back to RUNNING after the third, etc, etc).

All this works great EXCEPT that when the timer is running, and the user presses the start/stop/resume button again, the ScrollView will scroll down a ways. I am NOT issuing this command (I don't even have a reference to ScrollView object), and I'm not sure why it's doing this.

REPRO:Compile + run the below samples. When the app starts, press the 'Start Timing' button. Use your thumb (or the mouse) to touch-drag the screen upwards (so you can see the RatingBar), then drag it back downwards (so the button is again completely on-screen). Tap the button (which now reads 'PauseTiming') again, and it'll jump down a bit. It should NOT be jumping/scrolling down, since there's no statement (that I can see) that tells it to scroll down. As near as I can tell, it's the setText that causes the scrolling ( when I comment those lines out, no scrolling occurs).WHAT I'M ASKING FOR:if I'm doing something dumb & you could point out what it is, I'd really appreciate it! I wonder if 'touch mode' might have something to do with this, since it does NOT appear to happen (in the emulator) when I use the mouse's scroll wheel to move the panel upwards (i.e.,instead of the simulated finger-dragging). I can't find a whole lot on touch-mode, and nothing specific on focus/selection in touch mode within a ScrollView if you can confirm that this error occurs for you too, that would be ok, too (since misery loves company.AHEM I mean, since it might help confirm that it's not just me MyTestApp.java package bug.android.scrollview;
import android.app.Activity;
import android.os.Bundle;
import android.text.format.Time;
import android.view.Display;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
public class MyTestApp extends Activity {
public final static int STATE_TIMER_NOT_STARTED = 1;
public final static int STATE_TIMER_RUNNING = 2;
public final static int STATE_TIMER_PAUSED = 3;
private int mState;
Time t = new Time();
private Time data = new Time();
private Button btnStartStopResume;
private TextView lblSpacer;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_time_entry);
btnStartStopResume = (Button) findViewById(R.id.btnStartStopResume);
// Set the button's size so that the other info will also be visible
Display display = ((WindowManager) getSystemService(WINDOW_SERVICE))
.getDefaultDisplay();
// This is such a hack, but the windowScroller doesn't appear to
// have a height at this point in the lifecycle (nor in 'onResume' :( )
btnStartStopResume.setHeight(display.getHeight() - 200);
lblSpacer = (TextView) findViewById(R.id.lblSpacer);
reset();
} public void doStartStopResume(View v) {
if (mState == MyTestApp.STATE_TIMER_NOT_STARTED) {
mState = MyTestApp.STATE_TIMER_RUNNING;
data.setToNow();
} else if (mState == MyTestApp.STATE_TIMER_RUNNING) {
mState = MyTestApp.STATE_TIMER_PAUSED;
String s = getString(R.string.add_scroll_down_to_add);
lblSpacer.setText(s);
} else if (mState == MyTestApp.STATE_TIMER_PAUSED) {
mState = MyTestApp.STATE_TIMER_RUNNING;
public void doReset(View v) {
}public void doNewRunClick(View v) {
public void doAddTiming(View v) {
public void reset() {
mState = STATE_TIMER_NOT_STARTED;
new_time_entry.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/windowScroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
> <RelativeLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
> <Button
android:id="@+id/btnStartStopResume"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dip"
android:text="Start Timing"
android:textSize="40dp"
android:height="290dp"
android:onClick="doStartStopResume" />
<TextView
android:id="@+id/lblSpacer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/btnStartStopResume"
android:layout_centerHorizontal="true"
android:text="@string/add_scroll_down_for_more" />
<TextView
android:id="@+id/lblTimeStartLabel"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/lblSpacer"
android:layout_alignParentLeft="true"
android:clickable="true"
android:onClick="adjustStartTime"
android:text="Start of this run:"
android:textSize="8dp" />
<TextView
android:id="@+id/lblTimeStart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/lblTimeStartLabel"
android:layout_alignParentLeft="true"
android:clickable="true"
android:onClick="adjustStartTime"
android:text="--:--:-- --"
android:textColor="#FFFFFF"
android:textSize="26dp" />
<TextView
android:id="@+id/lblElapsedLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/lblSpacer"
android:layout_alignRight="@id/lblSpacer"
android:layout_marginRight="5dp"
android:text="Elapsed Time:"
android:textSize="8dp" />
<TextView
android:id="@+id/lblTimeElapsed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/lblElapsedLabel"
android:layout_alignRight="@id/lblSpacer"
android:layout_marginRight="5dp"
android:textColor="#99ff66"
android:text="-- m -- sec"
android:textSize="26dp"
android:layout_marginBottom="10dip"/>
<CheckBox
android:id="@+id/chkNewRun"
android:onClick="doNewRunClick"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/lblTimeElapsed"
android:text="This is a new run of timings"
android:layout_marginBottom="10dip" />

<TextView
android:id="@+id/lblIntensity"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Intensity (1 = none 5 = max)"
android:layout_below="@id/chkNewRun" />
<RatingBar
android:id="@+id/rbIntensity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/lblIntensity"
android:numStars="5"
android:rating="2"
android:layout_marginBottom="5dip" />

<TextView
android:id="@+id/lblNotes"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Notes:"
android:layout_below="@id/rbIntensity" />
<EditText
android:id="@+id/txtNotes"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@android:drawable/editbox_background"
android:layout_below="@id/lblNotes"
android:layout_marginBottom="10dip" />
<Button
android:id="@+id/btnReset"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/txtNotes"
android:layout_alignParentLeft="true"
android:layout_marginLeft="10dip"
android:layout_marginRight="10dip"
android:text="Reset"
android:onClick="doReset" />
<Button
android:id="@+id/btnOk"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/txtNotes"
android:layout_toRightOf="@id/btnReset"
android:layout_alignParentRight="true"
android:layout_marginLeft="10dip"
android:layout_marginRight="10dip"
android:text="Add Timing To List"
android:onClick="doAddTiming" />
</RelativeLayout>
</ScrollView>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Timer</string>
<string name="dlg_edit_timing_title">Edit A Timing</string>
<string name="add_scroll_down_for_more">< Scroll down for more options! ></string>
<string name="add_scroll_down_to_add">< Scroll down to save this timing! ></string>
<string name="start_timing">Start Timing
</string>
<string name="stop_timing">Pause Timing
</string>
<string name="resume_timing">Resume Timing
</string>
</resources>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="bug.android.scrollview"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MyTestApp"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="5" />
</manifest>
UPDATE 1: Adding if( btnStartStopResume.isInTouchMode() )
Toast.makeText(this, "TOUCH MODE", 2000);
elseToast.makeText(this, "NOT touch mode", 2000);
then setting breakpoints in the debugger confirms that the button is always in touch mode (regardless of whether I finger-drag the panel up/down, or mouse-wheel it up/down). So it's a combination of being in touch-mode AND finger-dragging the panel after the 2nd button-press (i.e, when the app is in 'stopped/paused timing' mode) that's causing the odd extra-timing in subsequent pauses.
UPDATE 2:
I just noticed that it's scrolling down to the EditText, and no further. It looks like when you move the panel down the EditText gets the selection, and after the click event the ScrollView scrolls back to the thing that has the selection. Seems to explain why the mouse-wheel approach doesn't have this problem (it moves the selection/focus back up to the button).

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