小编Seu*_*oon的帖子

如何检查一个NSDate属于今天？

我曾经使用前10个字符来检查它[aDate description].[[aDate description] substringToIndex:10]像"YYYY-MM-DD"这样返回字符串我将字符串与返回的字符串进行了比较[[[NSDate date] description] substringToIndex:10].

有更快速和/或更好的方式来检查？

谢谢.

我使用以下代码更改UIView的位置,而不更改视图的大小.

CGRect f = aView.frame;
f.origin.x = 100; // new x
f.origin.y = 200; // new y
aView.frame = f;

是否有更简单的方法来改变视图位置？

最近,我切换到Xcode4,当我编译我的项目时,我得到了以下错误.

ld: warning: ignoring file /Users/myname/Library/Developer/Xcode/DerivedData/appname-hezrgyqimckztgbdlslkavphdclw/Build/Products/Debug-iphoneos/libTapkuLibrary.a, file was built for archive which is not the architecture being linked (armv6)
Undefined symbols for architecture armv6:
  "_OBJC_CLASS_$_TKLoadingView", referenced from:
      objc-class-ref in RootViewController.o

我打开了TapkuLibrary并检查它的架构设置为'Standard(armv6 armv7)'.

我该怎么做才能解决这个问题？

我有第三方jar(我无法改变)使用java.beans.Introspector,java.beans.BeanInfo和java.beans.PropertyDescriptor.

如何在我的Android应用程序中使用该jar？

它无法Introspector从第3方jar 加载类(使用):

WARN/dalvikvm(780): VFY: unable to resolve static method 6325: Ljava/beans/Introspector;.getBeanInfo (Ljava/lang/Class;)Ljava/beans/BeanInfo;
WARN/dalvikvm(780): VFY: unable to resolve exception class 962 (Ljava/beans/IntrospectionException;)
WARN/dalvikvm(780): Verifier rejected class Lorg/thirdpartyjar/SomeClass;

我正在开发一个使用OpenGL framebuffer/renderbuffer绘制写意线的项目.这个应用程序使用OpenGL ES 1.x,我无法弄清楚如何将当前屏幕转储到PNG或JPG图像.

感谢您阅读此问题.

来自OpenGL新手.

用于创建帧缓冲区和渲染缓冲区的代码.

// Generate IDs for a framebuffer object and a color renderbuffer
glGenFramebuffersOES(1, &viewFramebuffer);
glGenRenderbuffersOES(1, &viewRenderbuffer);

glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);

// This call associates the storage for the current render buffer with the EAGLDrawable (our CAEAGLLayer)
// allowing us to draw into a buffer that will later be rendered to screen wherever the layer is (which corresponds with our view).
[context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(id<EAGLDrawable>)self.layer];
glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer);

glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);

// …

我们在iOS App Store(app1)上有一个应用程序,它的名字是"AAA".如果我们删除旧应用程序(app1),是否可以再次使用名称"AAA"？