I have create a listview . When listview is created I used setSelection(0) to set it to first listitem. But there is no visual effect, the selected listitem is not changed to listed color. In my application, I want to high light the first listItem by default. Does anyone know how to do that?
View 2 Replies
I have a ListView whose position should be changed automatically along with the data. So, when the adapter's data has changed (adapter is calling notifyDataSetInvalidated), I'm calling setSelection. This has no effect. If the call to setSelection is done later (e.g. in a click handler) it is working.
The second problem is, that the ListView maintains the scroll position of the list although the data is completely invalidated, that makes no sense IMO.
It looks like a call to layoutChildren before the call to setSelection does help in this case, but layoutChildren is protected.
What is the correct way to do this?
I am trying to set padding in shape declared in XML file. But whatever I set, nothing changes related to padding. If I modify any other properties, I see updated UI. But it doesn't work with padding. Could you please advice possible reasons for this?
I will provide below example of my shape.xml:
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<stroke android:width="1dp" android:color="#ffffff" android:dashWidth="2dp"/>
<solid android:color="@color/button_white_cover" />
<corners android:radius="11dp" />
<padding android:left="1dp" android:top="20dp"
android:right="20dp" android:bottom="2dp" />
</shape>
Sometimes, not all the time, but sometimes, my voice mail doesn't d/l to visual vm on the phone. I get notified of a voicemail and I have to dial in and listen to it on the server.
Anyone else having this problem? I cannot duplicate it, as it has only happened to me twice and I couldn't tell you the circumstances under which it happened. Nothing out of the ordinary?
I'm trying to scale/rotate an image using setImageMatrix, and it seems to have no effect. I've done a lot of Googling and found some people mentioning similar problems, but found no solution.
View 2 Replies View RelatedI've created a custom toolbar using a gradient inside a shape. It looks very nice, but since we only have the option for 3 colors (startColor, centerColor, endColor) it looks very round. I would like to do a glass effect, which requires a sharp change in color in the middle. Basically I need 4 colors (startColor, justabovecenterColor, justbelowcenterColor, endColor). Now I could have two shapes sitting on top of each other to get this effect, but I don't want to do this. I'm getting into some tricky UI customization here and that would be very difficult to manage on different sized screens.
View 1 Replies View RelatedI was interested in making a springy-bouncing effect for ListViews similar to one in iphone.I wanted to make sure about a few things before implementing it.
1). Does Android provide this feature somewhere in the new Donut version thats coming out?(so that i don't have to re-invent the wheel)
2). Do Google plan to add this feature in any future versions of the SDK?
I am looking for Deep effect in Android gallery. i did some work around coverflow at http://www.inter-fuser.com/search/label/Coverflow but it also do scroll left and right. it does give me the idea to calculate offset top and left for each item separately but still there is no access. what i am trying to do is, when user scroll, images would scroll from deep behind the right edge to center and then to left side deep behind.i am wondering if anyone have some thought about arranging the imageView's on deep offset (something like V shape ) rather than on horizontal as it is.
View 2 Replies View Relatedi am trying to create a ripple effect one similar to water live wallpaper in nexus one.please give me direction to acheive it.
View 7 Replies View Relatedthere seems to be a dead-lock problem when using sound effects with SoundPool. I was hoping the the problem would be fixed in the new firmware update, but unfortunately, it was not. The application still locks up after couple of minutes when playing sound effects using SoundPool. My application is a game playing a background music scenario with multiple simultaneous sound effects. Any word from devs as when we can expect stable SoundPool would be very welcome.
View 21 Replies View RelatedI really like the LOMO effects in the second picture as shown in the following website(or just search Lomoster in android market), anyone can tell me how to realize it?
View 2 Replies View RelatedI found an interesting tip over on the Tmobile forum that helped me out. I seam to get a real strong halo effect in my pictures from any light source, that blows out large parts of the photo. Most likely you have touched the camera lens while changing the battery or fooling about with the phone. Solution clean the camera lens and the inside and outside of the back cover. It is still far from great camera but, man, made it a whole lot better. All this time I thought it was just the crappy camera.
View 1 Replies View RelatedI'm trying to create a custom widget which looks lick HTML table. I chose to derive from TableLayout, which is the subclass of ViewGroup and View. What's confusing me is that the drawing I put into my override of View.onDraw did not take effect, until I moved the codes to the override of ViewGroup.dispatchDraw. I know dispatchDraw is a good place to draw something, but I'm just wondering why there's such difference in my practice?
View 3 Replies View RelatedSo I have a Canvas which uses a bitmap to store the draw calls on. I have applied a ColorMatrixFilter to the underlying bitmap of the canvas. It looks awesome when on the phone and during the OnDraw calls. The ColorMatrixFilter is making the bitmap look exactly like I want it when the Canvas is drawn. Now how do I SAVE the Colormatrix effect? I normally take the underlying bitmap that is attached to the Canvas and Bitmap.Compress save it. But this method doesn't save the ColorMatrixFilter effect. How can I get the ColorMatrixFilter to actually alter the Bitmap itself so I can Bitmap.compress save the damn thing!
View 2 Replies View RelatedI am new to android development, also new to java. I have many years of experience with OO PHP, so it's not hard for me to quickly learn Java and Android, but I still don't know many things like Thread class. I just started developing a simple app. What I want to do is that when a button is clicked, then the TextView is update in this way: the background is changed to black (by default it's set to white) Then it should wait a half a second and then set the background back to white and update the text inside the TextView
Here is my code, it's inside my Activity class:
public synchronized void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.btnPlay: showNewDraw(); break; } protected void showNewDraw() { textResult.setBackgroundColor(Color.BLACK); textResult.setText("Before sleep"); try { Thread.sleep(500); } catch (Exception e) { textResult.setText("Something wrong"); } textResult.setBackgroundColor(Color.WHITE); textResult.setText("After sleep"); }
The way it works now is that it seems to actually take 1/2 second from the time the button is pressed and text is updated, but the background is not reset to black and back to white - it always stays white. Either it is being set to black and instantly reset to white or it's just never set to black. What should I do in order for the "delay" effect to work?
For some reason, whenever I scroll through my list of items, the background inside my listview disappears and reappears giving rise to a "flicker" effect which I don't really want. I've tried the suggestion at: http://stackoverflow.com/questions/1377336/android-make-listview-transparent but it doesn't work for some reason. Any suggestions?
View 2 Replies View RelatedI have 4 buttons in a horizontal linear layout. I'd like the right edge of the 4th button to align with the right edge of the linear layout (equal to screen width) I've tried using android:layout_gravity="right" but it doesn't work - the right button is to the right of the 3rd one but not right aligned . Am I missing something obvious?
main.xml with only the relevant layout params only is:
CODE:....
This doesn't seem to match the stated behaviour for layout_gravity in the SDK reference :"Defines how to place the view, both its x- and y-axis, within its parent view group."
Does ICS (Android 4.0) effect RAM/CPU usage of NEO V?
Does it increase or decrease?
You've probably seen the effect on the iPhone when you go to the next screen, it flips the screen, making it appear, like you just flipped over a card and a new screen appeared. There is a demo of something similar in the APIDemos (Views/Animation/ 3D Transition), but the transitions are between elements of the same page. Is there a way to implement the flip effect between Activities (in the same process)?
View 4 Replies View RelatedI tried the following from an activity:
@Override public void onPause() { super.onPause();
postDelayed(new Runnable() { public void run() { mTextView.setText("I am paused!"); }, 10000); }
The activity, while in the background, still executes the runnable. Is this incorrect? Should we absolutely call removeCallback() from our onPause() handler to ensure that no postDelayed() runnables execute if we get paused? Or is it necessary to do this only in onDestroy()?
I have an application containing 3 interfaces(each one occupys a screen), I want to switch different interfaces by touching on the screen. Just like the desktop has 3 parts, we can move from one to anohter by touching. Can anyone tell me how to implement the kind of effect or where is the code of Android desktop slide effect.
View 4 Replies View RelatedPlease let me know! How to make text blinking effect in TextView? I am using Android SDK 2.2.
View 5 Replies View RelatedI am a newbie in android UI programming. I want to create a custom SurfaceView for my own renderer. And this view has a transparent/ translucent effect with background. I follow api demo sample code to create TranslucentGLSurfaceViewActivity and TranslucentGLSurfaceView, but render result is blank screen.
View 3 Replies View RelatedHow can we give a Page turn animation?
View 3 Replies View RelatedIn early versions of Android the android:allowClearUserData flag worked. Using this flag with an application on Froyo has no effect, even if the application is installed as a system application. The "Clear Data" button is enabled no matter what in the application manager. I have found no reason in the Android documentation why this shouldn't work.
View 2 Replies View RelatedHow to add rotation effect when change mode portrait to landscape? I want to make it smooth.
View 2 Replies View RelatedI need do draw on Android's Canvas using Blur effect, it is a very simple feature, I need to draw a circular area, which is blurred (the foreground) and the background transparent, I can do everything with manipulating the colour alpha to do it with custom transparency but I need it to be blurred instead of transparent..
View 1 Replies View RelatedI have a custom view, derived from Button, which I want to position at runtime, relative to another view. Because I don't know that other view's position yet when my view is being inflated (because layouting hasn't started), I leverage the onSizeChanged handler to set my view's position relative to the other view. code...
View 1 Replies View RelatedI want to remove the orange highlight around the EditText. This highlight doesn't match my UI and I really want to get rid of it. Any ideas?
View 1 Replies View RelatedI wrote application which uses ListActivity. Each item of the list consists of ImageView and TextView. Long click on list entry triggers some menu and color effect because onCreateContextMenu was overridden. Sometimes TextView contains HTML links which I would like to be interactive. I read #1697908 and made links active, so browser/youtube player is started. Everything would be great but color effect on long click disappeared (context menu still appears). Could somebody tell me how to connect these two features and get back color effect?
View 3 Replies View Related