I made a "GraphBar" custom view that is a RelativeLayout with a TextView on the bottom and an ImageView, varying in height, above that. Here is the code...
I've found it's probably a bug. The workaround should be, again, calling requestLayout(). Still i don't understand where i can put the call.
View 1 Replies
I am creating a CustomView with bigger image based on tutorial on and developers forum. It is scolling fine.I need exact pixel coordinates of my image.I am getting that also.now I want to draw some images upon scrolling image.I am able to draw images using onDraw().But images are not getting scrolled.Any idea how to resolve this?
View 4 Replies View RelatedThis is really frustrating, I am trying to get a carriage return drawn in my custom view and nothing is working. I have tried 'System.getProperty("line.separator")' but that makes it say null and I have tried '
' and '
' and those just both draw a little square. I am using the canvas.drawText meathod.
I like to know how can i clone a view object which is already there in the view hierarchy, so that it can be added to the same view hierarchy again.
View 1 Replies View RelatedI am trying to take a screen shot of whatever is drawn on my custom view's canvas. The getDrawingCache() call returns null sometimes. Any pointers to what I am doing wrong here?
View 3 Replies View RelatedI am using the following method in a new application I'm developing. There is a main activity, which instantiates different classes that extends RelativeLayout and I'm using setContentView to switch between the different modules of the application. I wonder if this is a good approach or necessarily I have to use different activities to the several screens the app haves.
View 1 Replies View RelatedHow to call Activity's onCreate() method each time it starts?
Only first time when installed on device it calls onCreate method.
I've been experimenting with orientation change and have seen a strange behavior (at least to my opinion) when I change the orientation from landscape to portrait. To make the explanation more concrete let's consider the following super-simple code:
CODE:...................
I put breakpoints at lines 9 and 15 and start the emulator in debug mode. The application starts and hits the breakpoint at line 9; so far so good. Then I press Ctrl+F11 to change the orientation from portrait to landscape. The debugger stops first at line 15 and then line 9. Everyhting normal so far. I hit once again Ctrl+F11 to change the orientation from landscape to portrait and some mumbo-jumbo starts happening. Here is the sequence of function calls I observe: 1.onDestroy() 2.onCreate() 3.onDestroy() 4.onCreate()
I really fail to understand why the platform needs to make the calls "2.onCreate()" and "3.onDestroy()". Can anyone explain why this is happening? At least I don't find it convenient because I need to implement more logic, because the extra calls "2.onCreate()" and "3.onDestroy()" cause side effects in my case. However, it would be interesting to know why these extra calls are taking place.
Is it possible to write custom metadata to an JPG image using Android SDK or some 3rd party lib , and extracting it afterwards? If it is, is there any simple solution?
View 1 Replies View RelatedMy activity bind a service. I want to call the service's function in activity's onStart/onCreate function, but it doesn't work. The service started sunless but the connection is null. When I just call the service's function in other function (onClick for example),
View 4 Replies View RelatedI want to change layout without calling the onCreate method. i also define android:configChanges="orientation|keyboardHidden" in my activity and it is not calling the onCreate method but the layout not adjust appropriately on landscape mode.
my current layout look like as follows.
after change orientation as landscape it look like as follows:
but on landscape i want the following result.
is there any auto adjacent property?
how can i do it?
I'm sure this is an obvious one but I'm at a loss. I'm using my own layout for list rows, all well and fine. but the moment I add a checkbox view to the rows layout only the checkbox responds to user selection. I'd like for the checkbox to change state if the user taps anywhere within a given row. (as with android prefs)
View 2 Replies View RelatedI want to build my own custom view which should look like the Crysis-GUI.At first I designed a XML-based Layout and made it visible via the setContentView(int resid)-Method. Worked pretty well.But now I wan't to go a step further and draw in my Layout. So I created a new Class, let it extend View and overrode the onDraw()-Method. So far so good.But how can I still use my XML-Layout? I can't do setContentView anymore, so how could the same effect be achieved?
View 1 Replies View RelatedI have a custom view that works fine and I'm trying to get gestures into it. The most common technique I see is to add XML, such as this (from Android docs.Can someone point out my errors, suggest a better way that will allow me to get gesture callbacks and/or suggest diagnostic approaches?
View 1 Replies View RelatedI am on Android 2.1 and I have one multi column Custom listview Using BaseAdapter with an editable edittext at the end of the listview. If the data in the listview do not contain the data of user choice then user should be able to enter data. If the data is already there in the list user will be able to select the data using custom selector. If a selection is made in the list view and user wanted to enter data in the text field at the bottom after selection then the marker in the list view should be unselected. I tried to use onclick() method on edit text using click listener. First time when it is clicked, edit text is getting focus and onclick() method is not fired. And when it is clicked second time, onclick() method is fired and notifyDataSetChanged() method is called. I tried to call the notifyDataSetChanged() method from the Focus Listener, list view selection is gone in my first attempt and edit text is not receiving any data input from the keyboard (frozen).
View 1 Replies View RelatedI've created a custom view in an SQLite database for an Android application. I'm using Sqliteman on Ubuntu to test my SQL statements before I put them in my app. I'm trying to do a simple select statement on my view. The select statement works fine in SQLiteman but when I put the same statement in my code it throws an error. The statement: select * from item_view where parent_item_id = 0;........
View 2 Replies View RelatedI'm creating my own View class, and defining custom xml attributes with a attrs.xml. As long as I provide each attribute manually, there is no problem, but
code:...................
The android:text is properly set in my instance, but the borderDrawable is not. I guess this has something to do with namespaces, because inside the styles.xml, the name="mypack:borderDrawable" is not handled by the XML parser's namespace facility, because its inside an attribute value. So "mypack" is in no way connected to "http://some.weird.url.com/seems/not/to/ matter" and adding it via xmlns:mypack... to the stylefile would not help, I guess. In the same file, "android:text" is somehow recognized, even though "android" is AFAIK only a ns-defintion for [url], which is also not declared in that file.
So what is the proper way to set a custom attribute in a style?
I am a new developer for Android. I wanna know about View transitions.For my application, it has 5 screens that can shift each other.In order word, Screen1 -> Screen2 <--> Screen3 <--> Screen4 -> Screen5.How to make this screen transition on Android ?
View 4 Replies View RelatedI'm writing my own custom view, a keyboard, which I think the ArrayList in the keyboard view is causing the application to quit in the emulator.
public static ArrayList<HexButton> hexButtons = new ArrayList<HexButton>();
The application ran fine when I did
setContentView(myKeyboardView);
But I want to nest my keyboard with a TextView so I'd like to be able to do
setContentView(R.layout.main);
Trying to support Swype on application for Android. The code isn't using Android's native EditTextView but our own custom View. What API can be used to retrieve the text once a swype has been completed and what callback method we should expect in our View?
View 3 Replies View RelatedCan I use a custom view like com.examples.me.customview in the xml file of a app widget and can then draw in the onDraw of the custom view? Or do I have to draw into the drawing cache of an ImageView instead?
View 12 Replies View Relatedi made a extended a View, overwrote the 3 View Contructors and tried to insert it on my xml of a widget.is it possible to use custom views in Widgets?
View 1 Replies View RelatedI want to create a custom view.In which i want to have a background image,2 buttons,1 textview.Can anybody tell me how to start with.
View 2 Replies View Relatedi have a custom view, when i want to add a scrollbar to it, i have a problem, i have learn the code of GridViewSpecial(which belong to Gallery) to my code, i found that my app can't resolve android.R.styleable, i search this question in groups, i know it was removed from SDK. so i write a styleable same as SDK in my app's attr.xml, but it wasn't work,i get a nullpointer when my view draw scrollbar.So someone can help me ?how can I add a scrollbar in my custom view ? (I don't want use ScrollView in my APP
View 2 Replies View RelatedWhen I comment out setContentView(boardView); in my Game.java my custom view in BoardView works fine and displays everything nicely... but onSizeChanged never gets called in BoardView.java... so I can't read the device width and height at runtime. If I leave setContentView uncommented onSizeChanged works... but the screen is blank! I want to be able to read the screen width and height at runtime and set the sizes of my ImageViews at creation so they are the optimal size.
public class Game extends Activity implements OnClickListener{
private BoardView boardView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {....................
Here is the XML for the layout in which I want my custom view to appear.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/widget273"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:rs="http://schemas.android.com/apk/res/com.bookcessed.booksearch"..................
Currently, I am creating a custom View class (DrawView) that inherits the View class and adding to my activity programatically by using RelativeLayout and LaoutParams etc. But is there an easier way to do this by adding my DrawView to the layout XML file?
View 4 Replies View RelatedI was attempting to add a custom view in XML, but I kept getting force closes. It works fine when I just find the parent and use addView() so it isn't the code. I'm pretty sure I'm just getting the constructors wrong. Does anyone have any experience with this?
Here's what I've got:
CODE:................
I'm trying to create a button in a custom view that I've created. I'm looping through an XML document and drawing certain things. I want to be able to also create buttons to go in certain locations depending on the xml data. I'd like to do it in the view because I want to be able to call invalidate() on my view to redraw things and replace the buttons when new xml data is available.
The problem is that I put my code in the view class, the activity crashes because the button is "null".
Here is a subset of my code:
CODE:............
I know this code works for creating buttons because I can put it in my activity class and it works just fine. Any suggestions? I thought about relocating the button in the activity, but I can't figure out how to do this when new data is available.
I'm writing a little custom view which can be in two states : checked, not checked. According to the state it is in, it's background changes. Quite straightforward sort of behavior. My class extends FrameLayout and implements the Checkable interface.
In my toogle method I just calls the setChecked method with a boolean corresponding to the new state. My setChecked method simply sets a mChecked boolean and calls the refreshDrawableState method. Pressing the view should then toggle it back and forth between the states check, unchecked.
The background of the FrameLayout is given a StateListDrawable in which I've defined a drawable item for the following states: state_pressed, state_focused, state_checked=true, state_checked=false.
When I press my custom view, the background changes all right back and forth between the state_pressed=true and state_checked=false items. But state_checked=true is never called.