iphone - IOS UIImageView displays with black background -

-

So I've got this function is that measures UIImages , and I am using it I have to start to be a .png with a UIImageView full transparency My problem is that when the image is displayed, a black rectangular image background the always around with an image Regardless, it is.

It is as well as the scaling method the initialisation UIImageView : 

  - (UIImage *) imageWithImage: (UIImage *) image scaledToSize: (CGSize) newSize {if ([[UIScreen mainScreen] respondsToSelector: @selector (scale)]) {if ([[UIScreen mainScreen] scale] == 2.0) {UIGraphicsBeginImageContextWithOptions (newSize, yes, 2.0); } And {UIGraphicsBeginImageContext (newSize); }} And {UIGraphicsBeginImageContext (newSize); } [Image drawInRect: CGRectMake (0, 0, newSize.width, newSize.height)]; UIImage * newImage = UIGraphicsGetImageFromCurrentImageContext (); UIGraphicsEndImageContext (); New image refund; } - (void) addMass: (M *) mass {UIImageView * image = [[UIImageView alloc] initWithImage: [self imageWithImage: [UIImage imageNamed: @ "circle.png"] scaledToSize: CGSizeMake (mass.mass, mass .mass)]]; [Image setbackgram color: [[UIColor alloc] initWithRed: 0 green: 0 blue: 0 alpha: 1]]; Image. Center = [group status]; [Image setbackgram color: [UIColor clearColor]]; [MUST IMAGES ADOBECT: IMAGE]; [Self.view addSubview: image]; }

You can see I've used [Image setBackgroundColor: [UIColor clearColor]]; to try and set the background color of to clear UIImageView , but it is not working.

All you need to do is 

  UIGRIFIIGIJEJentTechWidth Option (new Size, no, 0);

and the scale factor will be set automatically, and the resulting pixel in the image will be transparent.


Comments

Post a Comment

Popular posts from this blog

Editing Python Class in Shell and SQLAlchemy -

-
I am working on the terminal on a shell script after this tutorial SQLAlchemy tutorial. I need to type gt; & Gt; & Gt; Sqlalchemy import column, integer, string & gt; & Gt; & Gt; Class user (base): __tablename__ = 'users' id = column (integer, primary_key = true) name = column (string) absolute name = column (string) password = column (string) def __repr __ (self): return "& lt ; User (name = '% s', absolute name = '% s', password = '% s') & gt; "% (Self.name, self.fullname, self.password) After the problem I have typed the password = column (string) I hit twice and changed .... >> I then took everything back but then an error was thrown because the class already exists ... I am not completely sure how to fix it. How do I open that slip in the shell script and edit it (Add DF to DRR) The error thrown below: / user / giripeters / TFSQLLX / Lib / python2.7 / site-packages / sqlalchemy / ext / decla...
Read more

import - Python ImportError: No module named wmi -

-
I followed the instructions for downloading WMI for Python When I try to run the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = wmi.WMI (): if Raw_input ("restart% s?"% S.Caption) .upper () == "Y": s.StartService () I got the error traceback (most recent call end): file ". \", Line 1, edit: I am using Python 2.7.6 EDIT2: I am running 64-bit Windows 2008 R2, and I've downloaded WMI-1.4.9.zip (md5). I removed the content and put it in D: Python \ Tools \ Scripts I executed dragon setup.py.install I said D : \ Python \ tools \ scripts to% PATH% and when I execute the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = Wmi.WMI (): If raw_input ("Restart% s?"% S. Caption). () == "Y": s.StartService () error me Gets traceback (most recent call final): File ". See \", line 1, & lt; Modu...
Read more

uislider - In a MATLAB GUI, how does one implement a continuously varying slider from a GUIDE created .m file? -

-
I am trying to create a GUI with a plot and a slider. The slider should be described as continuously and output. I have a problem with this explanation that the uicontrol object is programmatically created, on the contrary, I want to know that in the last three instances, to complete the same thing done according to the program What can be added to a GUI file that is created. The code is down, and I have marked the (wrong) code that is provided by some of the above examples. Thanks a lot for any help! This slider function sets P1_slider_Callback (hObject, eventdata, handle) (handle, dragon, 'string', num2str (get (hObject, 'value'), 3)) PlottheData_Callback ( HOBject, EventData, Handle)% "PlotHeadata" is a button that creates the data slider based on the value of P1_slider%, and I think that here "p1_slider_CreateFcn" (hObject, eventdata, handle) needs to be assembled (HOBJECT, 'BackgroundRoller'), (0, 'Default UITTACKBACK MANDROLLE...
Read more