IOS学习笔记2-IOS屏幕 [[UIScreen mainScreen] bounds] 与[UIScreen mainScreen] applicationFrame]区别
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一直对ios设备的尺寸不大敏感,搞不清[[UIScreen mainScreen] bounds] 和[UIScreen mainScreen] applicationFrame]的区别,故总是心虚,现扫盲下:
定义一个宏:
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#define PrintRect(frame) NSLog(@"X:%f,Y:%f,W:%f,H:%f",frame.origin.x,frame.origin.y,frame.size.width,frame.size.height)
测试调用:
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NSLog(@
"[[UIScreen mainScreen] bounds]"
);
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PrintRect([[UIScreen mainScreen] bounds]);
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4
NSLog(@
"[[UIScreen mainScreen] applicationFrame]"
);
5
PrintRect([[UIScreen mainScreen]applicationFrame]);
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//Ipad4 retain:
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2013-07-17 10:08:39.094 IpadSize[191:907] [[UIScreen mainScreen] bounds]
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2013-07-17 10:08:39.097 IpadSize[191:907] X:0.000000,Y:0.000000,W:768.000000,H:1024.000000
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2013-07-17 10:08:39.098 IpadSize[191:907] [[UIScreen mainScreen] applicationFrame]
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2013-07-17 10:08:39.099 IpadSize[191:907] X:0.000000,Y:20.000000,W:768.000000,H:1004.000000
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//ipad normal:
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2013-07-17 10:19:09.886 IpadSize[1223:11303] [[UIScreen mainScreen] bounds]
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2013-07-17 10:19:09.887 IpadSize[1223:11303] X:0.000000,Y:0.000000,W:768.000000,H:1024.000000
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2013-07-17 10:19:09.887 IpadSize[1223:11303] [[UIScreen mainScreen] applicationFrame]
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2013-07-17 10:19:09.888 IpadSize[1223:11303] X:0.000000,Y:20.000000,W:768.000000,H:1004.000000
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//iphone:
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2013-07-17 10:15:39.372 IpadSize[1005:11303] [[UIScreen mainScreen] bounds]
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2013-07-17 10:15:39.373 IpadSize[1005:11303] X:0.000000,Y:0.000000,W:320.000000,H:480.000000
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2013-07-17 10:15:39.374 IpadSize[1005:11303] [[UIScreen mainScreen] applicationFrame]
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2013-07-17 10:15:39.374 IpadSize[1005:11303] X:0.000000,Y:20.000000,W:320.000000,H:460.000000
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//iphone 3.5 retain:
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2013-07-17 10:16:34.145 IpadSize[1043:11303] [[UIScreen mainScreen] bounds]
24
2013-07-17 10:16:34.146 IpadSize[1043:11303] X:0.000000,Y:0.000000,W:320.000000,H:480.000000
25
2013-07-17 10:16:34.147 IpadSize[1043:11303] [[UIScreen mainScreen] applicationFrame]
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2013-07-17 10:16:34.147 IpadSize[1043:11303] X:0.000000,Y:20.000000,W:320.000000,H:460.000000
27
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//iphone 4 retain:
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2013-07-17 10:17:26.562 IpadSize[1083:11303] [[UIScreen mainScreen] bounds]
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2013-07-17 10:17:26.563 IpadSize[1083:11303] X:0.000000,Y:0.000000,W:320.000000,H:568.000000
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2013-07-17 10:17:26.564 IpadSize[1083:11303] [[UIScreen mainScreen] applicationFrame]
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2013-07-17 10:17:26.564 IpadSize[1083:11303] X:0.000000,Y:20.000000,W:320.000000,H:548.000000
从日志输出可以看到,bounds就是屏幕的全部区域,applicationFrame就是app显示的区域,不包含状态栏(高度20,如果状态栏隐藏的话,那么,这个结果就和bounds一样了)
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