Does anyone know how I can get my custom view object to appear in Eclipse's Android layout tool when I put the parameters in my layout file?
If you don't want to put any code here, just a link to a resource would be great too. I'm not having any luck searching for what I want.
Thanks.
Having your view displayed in the Layout View in Eclipse is not straight forward. From what I've seen (it's not exhaustive at all), using a completely custom View / Surface View with the rendering placed in a separete thread does not work.
But if you're building a custom View based on an existing one (for example inheriting from an EditTExt) and only overriding the onDraw method, then the layout manager will display your view as intended. The the parameters inherited from the Android View (here EditText) will apply to your custom View. Custom parameters won't have effects (I think).
Related
In iOS the "Window" is only one usually. And we can change the window's RootViewController and then the RootViewController's view is shown on screen.
How about android?
Is this picture real??? the PhoneWindow is under Activity?
If this is true, What is "Super Top View" on android like "Window" in iOS ( iOS's "Window" encompass all controller's view if the controller is window's RootViewController Right? )
Instantiates a layout XML file into its corresponding View objects
In Android every views are inside the Layouts thats in xml format even its activity or fragment its does not matter.
And also we can create custom views(button,textview...) and layout without xml data using programmatically java code.
Refer for more details
LayoutInflater
i am trying to design dynamic ui layout in android to present the date like the image below. i am **facing the challenges in the creating an view as clustered in the below mail **
i tried using list view!
but the each appeares in diffrent line, it dose not lookes like the image as below! is that possible to design like this. if so how to do that?
Try to create a few custom views, e.g. this circles with dates, this labels on the left and rights with xml layouts. Next, create parent view with some container layout, e.g. FrameLayout. In this parent view override it's onDraw() method, and there manually create and add every layout. It is simple, but might be not efficent, when there are many of views
I am new to android and trying to make something like the fingerlock security system of the android. The problem is that I have found a lot of reference on drawing onto a plain background (that sets different content view and allows drawing onto that), but not regarding drawing onto the same activity layout.
To draw manually on a View, you need to override its onDraw method. For this you need a custom View (often extending from an existing View type).
If you are using an xml to set the Activity's layout in setContentView() then you need to add the above custom view to this xml. Then, you can draw onto the same activity layout.
setContentView is noting but the activity view. once the view is set in main activity (max in oncreate method) it can update from multiple classes according to your logics.. i think before trying this you have to understand the view and its hierarchic properties properly
i have to draw a ball inside a view (or anything else that is good for this task).
I have followed some tutorial about the matter, but every tutorial that i have found
uses only one view (that is shown on the screen without the use of a layout).
But in my Activity i use a layout, that is composed by many views, and i want to draw
only on one of them.
here a little mockup!
Anybody knows a way to do it?
Is the view the wrong container to do it?
Thanks is advance!
Bye
...
You should extend a view that inherits from ViewGroup. this kind of view lets you handle a view that contains other views. with that, you can control the drawing, measures and layout of each of it's children separately
Your mockup can be made with a LinearLayout, which will contain some TextView's and you own View (the one which is containing the ball).
I'm surprised by this question, because there are many examples over the net explaining how to build a layout containing multiple views.
I'm very new to an Android platform and currently trying figure out why things work this way:
If I create GLSurfaceView and add it using the setContentView or addContentView to an activity everything works fine (Renderer.onDrawFrame is called as expected). However if I add my GLSurfaceView to another ViewGroup (which is then added using setContentView) nothing is rendered.
So what is the difference between addView and addContentView ?
In the end I need to create a custom view with OpenGL rendering in background and some controls on top.
Also what is the point of separating View and ViewGroup? Why not to join them (like it is done in CocoaTouch) ?
setContentView(View) sets the parent View for an Activity (or dialog etc...).
addView(View) adds a View to a ViewGroup.
View and ViewGroup are mostly different. View is a more specific single entity. It should be used more on one facet of what you are trying to do. ViewGroup, however, focuses more on the whole and acts (is) a container and layout organizer for a collection of Views.
Can you post all the code related to the GLSurfaceView and how you are setting it as contentView?