custom-view | 易学教程

android:how to instantiate my custom view with attributeset constructor

阅读更多关于 android:how to instantiate my custom view with attributeset constructor

问题 My custom view has dynamic custom attribute,e.g. the backgroundimage attribute,assign via current week. I wan't to use construtor CalendarView(Context context, AttributeSet attrs) to pass several attribute,and I try to instantiate the attributeset with Xml.asAttributeSet,but it can't work. can anyone tell me how to do. Note:my custom view has dynamic attribute ,so I don't wan't to instantiate the custom view via xml layout. my solution is incorrect ? here is the custom view: public class

Smaller active area for custom UIBarButtonItem

阅读更多关于 Smaller active area for custom UIBarButtonItem

问题 I have a UINavigationBar with a custom UIBarButtonItem (which uses a UIButton as its custom view). The problem is: the active area of the custom button is much too large, if I tap at least 40 pixels outside the button, it still gets registered as a tap on the button. This results in accidental taps. How can I reduce the active area on these buttons? 回答1: I noticed this weirdness too. I found that using a container UIView fixes this. For example: UIButton *menuButton = [[UIButton alloc]

Invalidate doesn't cause OnDraw

阅读更多关于 Invalidate doesn't cause OnDraw

I have problem with my Android app. I've created custom view ( http://syedwasihaider.github.io/blog/2015/07/12/XamarinViews/ up to step 2), overriden onDraw and I draw black screen and text "Draw {i}" where i is number that increments every time onDraw occurs. I want to call this method 30 times/second (or 60), so I've set up timer that causes Invalidate() every 33 ms. But Invalidate() doesn't cause onDraw at all! (It's not like its a delay between invalidate and ondraw, ondraw isn't called at all). I've tried to set SetWillNotDraw(false) , but it didn't work. Here's my code: class DrawCanvas

Display curve shape progress in custom View

阅读更多关于 Display curve shape progress in custom View

问题 I am working with custom view which is in a circle shape. Almost i have done it with creating a custom class and implemented that. But my problem is too show a different progress in a curve shape with different color and which is depends on dynamic data. Here is the image which i have implemented I want like this http://imgur.com/cmNKWBF. So my question is how to draw arc (curve shape) progress with different color and with dynamic data. Help would be appreciated !! 回答1: Finally i have

Adding a Custom ImageView to main layout

阅读更多关于 Adding a Custom ImageView to main layout

问题 here is the deal. i was looking over this code about extending an ImageView: http://marakana.com/forums/android/examples/98.html and i was wondering how can i add the new View to an existing xml layout file, along with some other views. already i did this inside my main linear layout: <FrameLayout android:id="@+id/FrameLayout01" android:layout_width="300dp" android:layout_height="300dp"> <com.marakana.Rose android:layout_height="wrap_content" android:layout_width="wrap_content"/> but the

Spring MVC AJAX and JSON using Custom View Resolver, and Custom View

阅读更多关于 Spring MVC AJAX and JSON using Custom View Resolver, and Custom View

问题 custom view: public class MyView extends AbstractView { .... awesome stuff ... } controller: @RequestMapping(value="mylocation") public ModelAndView dosomething() { ... modelAndView.setView( new MyView() ); return modelAndView; } For some reason this doesn't work... The only view resolver I have is the following: <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" > <property name="exposedContextBeanNames"> <list> <value

how to use custom views in layout xml

阅读更多关于 how to use custom views in layout xml

问题 I've created a custom layout to show gif animated image. Here is the code: public class GIFView extends View{ private Movie movie; private InputStream is; private long moviestart; private long duration; public GIFView(Context context) { super(context); is=getResources().openRawResource(R.drawable.anim_cerca); movie=Movie.decodeStream(is); duration = movie.duration(); } public GIFView(Context context,AttributeSet set){ super(context,set); is=getResources().openRawResource(R.drawable.anim_cerca

ActionBarSherlock landscape mode

阅读更多关于 ActionBarSherlock landscape mode

问题 I've read a ton of stuff on this actionbar however, i am having problems with it in landscape mode i want to create a custom view above the tabs this is my code import android.content.Context; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import com.actionbarsherlock.app.ActionBar; import com.actionbarsherlock.app.SherlockActivity; public class MainActivity extends SherlockActivity { private ActionBar bar; @Override

How can i pass Touch Listeners to Custom View for Drag and Drop?

阅读更多关于 How can i pass Touch Listeners to Custom View for Drag and Drop?

问题 I've a question concerning handling touch events for CustomView .I'm adding custom view's dynamically to layout (i.e FrameLayout). Those custom views having touchListeners for pulling points at corners (It shows in the below image). Along with that i have to drag and drop the total view on the screen, if user touches other than those corner points (color area in the image) have to drag and drop of the view otherwise not, and also if user touches outside of that view i don't want trigger any

how to access custom attribute with multiple formats?

阅读更多关于 how to access custom attribute with multiple formats?

问题 I read in another answer that in android you can declare attributes for your custom view that have multiple formats like this: <attr name="textColor" format="reference|color"/> how can I access these attributes in my class? Should I just assume it to be a reference, use getResources().getColorStateList() and then assume it to be a raw RGB/ARGB color if Resources.getColorStateList() throws Resources.NotFoundException or is there a better way of differentiating between the formats/types? 回答1: