(Details will vary.)
Q:
iPhone - UITableView slow to display
I have a simple table view controller where I load 5 entries. It takes about 12 seconds to show up.
I have a long section where I load the contents of an sqlite database that spans several screens. This is essentially a list of locations and is currently too long to show in one screen, so I'm trying to make it scrollable. The UITableView I'm using has about 300-400 entries, and I'm making the cells span 2 rows. If I scroll the entire thing, it displays fine, but if I try to just scroll to the cell it's about to display, the viewcontroller takes a long time to show up. Any ideas why this would be?
A:
You might want to check out this section of the UITableView document:
If you require that your table view display
content in a certain order, you may be
surprised to find that your table view
is the wrong amount of time to display
the data. When this happens, the
table view must query the content
provider, retrieve the data, and then
make the cells' contents available
to the user. This means that you can
optimize your app in two ways:
You can design your content to reduce the number of times the content provider queries the content.
You can cache the data so that it is more likely to be available to the table view.
In the first case, you should try to design your content such that you minimise the number of time the content provider queries the data.
In the second case, you need to investigate caching the data. You can either cache the whole table, or you can just cache a subset of the content that you display.
The article goes on to suggest some ways to improve performance when caching content:
Think about what content you really need to display. If you're creating a ToDo list app, it might be better to cache only the items that are currently open in the list.
Make sure that the content provider you're using is the most efficient one for your data type and usage patterns. If you're only looking for a small amount of data and you're not scrolling around the table, a Cursor is probably the most efficient way to do things.
If you have a lot of data, you can 01e38acffe
The versions I tested were:
-Ubuntu: 16.04 LTS
-Firefox: 76.0.1
-Chrome: Version 80.0.3987.132
-Chrome-Windows: Version 80.0.3987.132 (Official Build) (64-bit)
-Edge: Version 80.0.3987.132 (Official Build) (64-bit)
-Safari: Version 11.0.1 (1375.34.10.1)
-Opera:Version 31.0.1524.52 (Official Build) (64-bit)
A:
I had the same problem and the solution was easy.
I have to activate java in the browser settings.
It works in safari, firefox, chrome and other browsers.
In chrome, the settings are in:
chrome://settings/content/browsers/java
The present invention relates to an electrophotographic developing method for developing an electrostatic image formed on a photosensitive body with a developer containing a carrier and a toner in a development process in an electrophotographic apparatus such as a laser printer, a copying machine, etc.
In the developing process, a latent image on a photosensitive body is developed by mixing a toner having an appropriate weight and a developer carrier carrying the toner in the developing device. The thus-developed toner image on the photosensitive body is then transferred to a transfer sheet by a transfer roller, etc. On the other hand, in order to reduce the amount of waste toner, an electrostatic charging device and a cleaning device are usually used. In order to maintain the performance of the electrostatic charging device, the condition for electrostatic charging must be maintained constant.
In order to charge the photosensitive body uniformly, Japanese Unexamined Patent Publication JP-A 61-217121 (Kokai) proposes a method of charging the surface of the photosensitive body to a higher potential by charging a transfer sheet with an AC discharge. As a result, this prevents an occurrence of the discharge between the photosensitive body and the transfer sheet, and allows the photosensitive body to have a higher potential.
However, in the above-mentioned method, a discharge between the photosensitive body and the transfer sheet occurs only in a single period of the AC discharge. Therefore, the discharge does not occur uniformly between the photosensitive body and the transfer sheet,
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