iphone ios 屏幕，statusbar，状态栏的高度

ios

app尺寸，去掉状态栏

CGRect r = [ UIScreen mainScreen ].applicationFrame;

r=0，20，320，460

屏幕尺寸

CGRect rx = [ UIScreen mainScreen ].bounds;

r=0，0，320，480

状态栏尺寸

<code style="margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu sans Mono', 'Bitstream Vera sans Mono', 'Courier new', monospace, serif;"><span style="word-wrap: normal; word-break: normal; line-height: 24px; font-size: 16px;"><span style="color:#2b91af;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">CGRect</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;"> rect</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">;</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">  rect </span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">=</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;"> </span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">[[</span><span style="color:#2b91af;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">UIApplication</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;"> sharedApplication</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">]</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;"> statusBarFrame</span><span style="color:#000000;word-wrap: normal; word-break: normal; line-height: 24px; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; background-color: transparent;">];</span></span></code>

iphone中获取屏幕分辨率的方法

CGRect rect = [[UIScreen mainScreen] bounds];

CGSize size = rect.size;

CGFloat width = size.width;

CGFloat height = size.height;

另外，设计UI的时候，注意用户最小的触控面积。有2种说法

44*44 好像是来自sdk

64*64 来自standford讲义