I 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...
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I'm using the following code:
CODE:................
But as you can see, it is setting the layout dimensions in pixels.
Does anybody know how to do the same thing but in "dip" ?
<<LinearLayout>>.getLayoutParams() returns <<RelativeLayout>>.LayoutParams? I found that happends and so freaked. Is there any reason? or just a bug? it's eclair.
View 2 Replies View RelatedI have an application I wrote for Android (lat's call it MyMainApp).
My contractor wants me to write another utility (service) to periodically check his website for newer versions of MyMainApp, and if there is one - download it and install.
I know this is handled by the Market app, but my contractor wants to do it in his own utility (he does not want the user to be bothered with the update process).
Of course - the user will be notified and agree to this feature. Can this be done?
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 RelatedIt seems like every example I can find of switching between Activity's involves creating an Intent and passing in the context of a View via an OnClickListener associated with a button.But what if you just decide you need to switch Activity's? In my case, a Preference value is causing an Activity switch. How do you create an Intent that can cause an Activity switch without an associated OnClickListener?
View 4 Replies View RelatedIs it possible to clear a notification programatically?I tried it with the NotificationManager but its not working.Is there any other way i can do it?
View 2 Replies View RelatedI have a little problem with a ScrollView.I have a layout for an activity which is made with a ScrollView. This scrollview contains two ListViews.<?xml version="1.0" encoding="utf-8"?>
<ListView android:id="@+id/accountsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
<ListView android:id="@+id/cardsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
</LinearLayout>In onCreate method of my activity I compute ListViews height according there contents.During execution, on activity launch, ScrollView is already scrolled a bit.So I tried, at the end of onCreate to call method scrollTo(0, 0), but it does not change anything.
I have To set Wall Paper In application by writing the code programmatically. when i press the Grid view Image will get full screen ..... that image i should keep as a wall paper in the android mobile screen how can i do that in programatically. I have done some thing like this ....is it correct or any other way to do it.
CODE:...............
I want do set size (in px) of dialog based on screen resolution, so I have to set dialog size programatically during runtime.
Dialog layout is defined in xml with all standard views, so it would be nice to have better way to set dialog size than override-in top view's onMeasure(...).
Are the following actions possible using the latest version of the Android API?:
Temporarily disable sending text messages
Temporarily disable receiving text messages
*Ideally, I would intercept them and queue them up for later delivery.
Temporarily disable incoming calls except from certain phone numbers
Temporarily disable outgoing calls except to certain phone numbers
How do we set the input type for an EditText programatically? I'm trying:
mEdit.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
it doesn't seem to have any effect.
Is it possible to remove an application programatically? If so, shall I look at the package manager for that or is there an example some place? When a package is installed, I believe there is a broadcast message to the system saying that. Is it possible to capture that broadcast message?
View 6 Replies View RelatedI have a FrameView that's created in my XML layout, and in my code, I'm trying to create a series of new ImageViews and add them as children of this FrameView. The ImageViews are small, only about 15 pixels square, and I want them to show up in various positions around the FrameView (I'm trying to implement what looks like a radar screen). I'm able to create them and add them just fine, and they show up on the screen.
However, when I try to set their margins, it doesn't seem to have any effect. No matter what I set, all the ImageViews show up in the top left corner of the FrameView, as opposed to offset by the appropriate margins. My XML layout is listed below, along with the code that generates the child views. Am I doing something wrong? How can I get the margins to show up properly? Or is there a better way to do this than by using margins.
XML:
CODE:....................
Java:
CODE:...............................
I'm writing a simple caesar-encryption-activity. Two EditTexts on screen, one clear-text, one crypted.
Here's an example for the crypted EditText - the cleartext one is similar.
CODE:...................
Now when entering cleartext I have an TextChangedListener running that programatically crypts and fills that crypto-EditText. So far, so good.
When the cleartext entered gets really long, the cleartext-EditText scrolls with my imput, but the crypto-EditText stays at the top of the text. I'd really like the crypto-EditText to scroll so that it always shows the bottom line of its content.
How can that be done, preferably from the onTextChanged()-Method of the TextWatcher?
How can we programatically push our app to run in background? I am doing one browser app. and when I am directly launching my application and clicking back key . It will show in the list of background running process.At this time Category is "CATEGORY_LAUNCHER" but at the same time if we try to run same app via third party app.and then clicking back key,its not showing in the list of background running process.Here the Category is "CATEGORY_BROWSABLE".and its not displaying in the list of running process.I noticed that the same behaviour in default android browser. But is their any way to make my app to run in background by clicking back key without killing my application?
View 6 Replies View RelatedIn menu.xml you can specify an icon:
CODE:.................
Whereas in code you create entries thus:
CODE:........
How in the code version do you specify the icon please?
I know you need root access if you want to capture a screenshot by using a background application. However is it possible to just grab the screen content of your current visible activity owned by your process? This does not seem like a security constraint since the user has already installed your app is currently using your app. If so how does this work?
View 2 Replies View RelatedI'm trying to create a TableLayout programatically. It just won't work. The same layout in an xml file works though. Tcode...
When I run this, I don't get a crash, but nothing appears. If I get rid of the TableRow instance, at least the button does appear as a direct child of the TableLayout. What am I doing wrong?
I am trying to add permissions to my application manifest, so it can access other apps that the user installs at runtime. I thought the way to do this was to define a permission-tree in the manifest, and then use PackageManager.addPermission() to add permissions under that tree. However, I can't get this to work and the documentation I found wasn't conclusive. Could anybody show me how to do this by means of a simple example?
View 3 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?