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2014/10/15 下午 10:11:30

iphone Programming Glossary: modes

Landscape Mode ONLY for iPhone or iPad

http://stackoverflow.com/questions/2647786/landscape-mode-only-for-iphone-or-ipad

mode to match the orientation of the Home screen. If you have an application that runs in both portrait and landscape modes your application should always launch in portrait mode initially and then let its view controllers rotate the interface..

Detect Retina Display

http://stackoverflow.com/questions/3504173/detect-retina-display

does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator. I test for the displayLinkWithTarget selector method on the main screen which..

How to tint a transparent PNG image in iPhone?

http://stackoverflow.com/questions/3514066/how-to-tint-a-transparent-png-image-in-iphone

the answer below to work around that issue it took quite a long time to find out. You can also use one of the blend modes kCGBlendModeSourceIn DestinationIn instead of CGContextClipToMask . If you want to create a UIImage each of the following..

How to customize the background/border colors of a grouped table view cell?

http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell

border and background itself in the appropriate colors. This view needs to be able to draw the borders in 4 different modes rounded on the top for the first cell in a section rounded on the bottom for the last cell in a section no rounded corners..

Rendering to non-power-of-two texture on iPhone

http://stackoverflow.com/questions/4760174/rendering-to-non-power-of-two-texture-on-iphone

not be a power of two. In the absence of OES_texture_npot which lifts these restrictions neither mipmapping nor wrap modes other than CLAMP_TO_EDGE are supported in conjunction with NPOT 2D textures. A NPOT 2D texture with a wrap mode that is..

Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone

http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone

NSRunLoop currentRunLoop forMode NSRunLoopCommonModes UITrackingRunLoopMode is considered one of the common modes. Spending too much time interrupting UIKit can lead to some very poor control responsiveness so you need to be careful...

Grand Central Dispatch (GCD) vs. performSelector - need a better explanation

http://stackoverflow.com/questions/5225130/grand-central-dispatch-gcd-vs-performselector-need-a-better-explanation

id obj waitUntilDone BOOL wait NSRunLoop mainRunLoop performSelector selector target self withObject obj order 1 modes NSRunLoopCommonModes And on performSelector target withObject order modes the documentation states This method sets up a.. selector target self withObject obj order 1 modes NSRunLoopCommonModes And on performSelector target withObject order modes the documentation states This method sets up a timer to perform the aSelector message on the current thread 䏭 run loop at.. on the current thread 䏭 run loop at the start of the next run loop iteration. The timer is configured to run in the modes specified by the modes parameter. When the timer fires the thread attempts to dequeue the message from the run loop and..

iOS UIImagePickerController result image orientation after upload

http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload

the image is uploaded and viewed as it had been rotated 90 degrees. my application is set to only work in portrait modes upsidedown and regular . How can i make the image always show the correct orientation after uploading the image appears..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour

this clash between the CADisplayLink and the UIScrollView or know how to fix the UIScrollView working in other run modes Thanks in advance Promised links to similar questions UIScrollView broken and halts scrolling with OpenGL rendering related..

NSDefaultRunLoopMode vs NSRunLoopCommonModes

http://stackoverflow.com/questions/7222449/nsdefaultrunloopmode-vs-nsrunloopcommonmodes

suggests an alternative option using NSRunLoopCommonModes for connection. That gets me look into detail of the two modes NSDefaultRunLoopMode and NSRunLoopCommonModes but the apple document does not kindly explain other than saying NSDefaultRunLoopMode.. loop mode. NSRunLoopCommonModes Objects added to a run loop using this value as the mode are monitored by all run loop modes that have been declared as a member of the set of 𦣇ommon modes see the description of CFRunLoopAddCommonMode for details... this value as the mode are monitored by all run loop modes that have been declared as a member of the set of 𦣇ommon modes see the description of CFRunLoopAddCommonMode for details. CFRunLoopAddCommonMode Sources timers and observers get registered..

Correct Singleton Pattern Objective C (iOS)?

http://stackoverflow.com/questions/7598820/correct-singleton-pattern-objective-c-ios

. That bug should be fixed not hidden. This approach also lends itself to refactoring to support non singleton usage modes. Pretty much every singleton that survives beyond a few releases will eventually be refactored into a non singleton form...

How do I start playing audio when in silent mode & locked in iOS 6?

http://stackoverflow.com/questions/9725192/how-do-i-start-playing-audio-when-in-silent-mode-locked-in-ios-6

sizeof sessionCategory sessionCategory And setting Info.plist to Required background modes UIBackGroundModes App plays audio audio At Present I can play audio even in silent when the app is running and on screen...