1.刚开始，是没有出现，这个键盘，点着点着，这个键盘会慢慢出来，而且越来越高，最后消失不见。
2.ios5底下，没这事儿。好着呢。
3.第一次进这个页面，没问题，正常。
看了这段代码，原来keyboard 跟视图不在同一个window。
明天去公司试试。
// my func
- (void) findKeyboard {
// Locate non-UIWindow.
UIWindow *keyboardWindow = nil;
for (UIWindow *testWindow in [[UIApplication sharedApplication] windows]) {
if (![[testWindow class] isEqual:[UIWindow class]]) {
keyboardWindow = testWindow;
break;
}
}
// Locate UIKeyboard.
UIView *foundKeyboard = nil;
for (UIView *possibleKeyboard in [keyboardWindow subviews]) {
// iOS 4 sticks the UIKeyboard inside a UIPeripheralHostView.
if ([[possibleKeyboard description] hasPrefix:@"<UIPeripheralHostView"]) {
possibleKeyboard = [[possibleKeyboard subviews] objectAtIndex:0];
}
if ([[possibleKeyboard description] hasPrefix:@"<UIKeyboard"]) {
foundKeyboard = possibleKeyboard;
break;
}
}//add by weichao beginfoundKeyboard.frame=CGRectOffset(foundKeyboard.frame, 0, 100);}还是没有解决问题，但是写了点代码，还是记录一下，大杀器也有不管用的时候啊，在封闭面前，或者说，在我不清楚这个机制的时候。地下这段代码只是一个记录，时候发现与问题的最终解决无关。
/*
DISPLAY A RECURSIVE VIEW HIERARCHY TREE
*/
// Recursively travel down the view tree, increasing the indentation level for children
- (void) dumpView: (UIView *) aView atIndent: (int) indent into:(NSMutableString
{
for (int i =0; i < indent; i++) [outstringappendString:@"--"];
[outstringappendFormat:@"[%2d] %@ Frame:%@\n", indent, [[aViewclass] description],NSStringFromCGRect(aView.frame)];
for (UIView *viewin [aViewsubviews]) [selfdumpView:viewatIndent:indent +1into:outstring];
}
// Start the tree recursion at level 0 with the root view
- (NSString *) displayViews: (UIView
{
NSMutableString *outstring = [[NSMutableStringalloc]init];
[selfdumpView: aViewatIndent:0into:outstring];
return
}
// Show the tree
- (void) displayViews
{
NSLog(@"%@", [selfdisplayViews:self.view.window]);
}
//show the UIKeyboard
- (void) displayUIKeyboardViews
{
NSArray *windowArray=[[UIApplicationsharedApplication]windows];
NSLog(@"%@",windowArray);
UIWindow *keyboardWindow =nil;
for (UIWindow *testWindowin [[UIApplicationsharedApplication]windows]) {
if (![[testWindowclass]isEqual:[UIWindowclass]]) {
keyboardWindow = testWindow;
break;
}
}
if
NSLog(@"%@", [selfdisplayViews: keyboardWindow]);
}
if
autoresizesSubviews=NO;
}
// UIView* possibleKeyboard_2_0=nil;
// UIView* possibleKeyboard_2_1=nil;
// UIView* UIKBDimmingVie=nil;
// NSArray* UIKBKeyViewArray=nil;
for (UIView *possibleKeyboardin [keyboardWindowsubviews]) {
if ([[possibleKeyboarddescription]hasPrefix:@"<UIPeripheralHostView"]) {
// --[ 1] UIPeripheralHostView Frame:{{-110, 164}, {320, 216}}
possibleKeyboard.frame=CGRectMake([self.tfX.textintegerValue], [self.tfY.textintegerValue], [self.tfHeight.textintegerValue], [self.tfHeight.textintegerValue]);
// possibleKeyboard.frame=CGRectOffset(possibleKeyboard.frame, [self.tfX.text integerValue], [self.tfY.text integerValue]);
// possibleKeyboard.frame=CGRectMake(0, 264, 320, 216);
// possibleKeyboard_2_0 = [[possibleKeyboard subviews] objectAtIndex:0];
// possibleKeyboard_2_1 = [[possibleKeyboard subviews] objectAtIndex:1];
}
// if ([[possibleKeyboard_2_0 description] hasPrefix:@"<UIImageView"]) {
// possibleKeyboard_2_0.frame=CGRectMake(0, -3, 320, 3);
// }
// if ([[possibleKeyboard_2_1 description] hasPrefix:@"<UIKeyboardAutomatic"]) {
// possibleKeyboard_2_1.frame=CGRectMake(0, 0, 320, 216);
// possibleKeyboard=[[possibleKeyboard_2_1 subviews] objectAtIndex:0];
// }
// if ([[possibleKeyboard description] hasPrefix:@"<UIKeyboardImpl"]) {
// possibleKeyboard.frame=CGRectMake(0, 0, 320, 216);
// possibleKeyboard=[[possibleKeyboard subviews] objectAtIndex:0];
// }
// if ([[possibleKeyboard description] hasPrefix:@"<UIKeyboardLayoutStar"]) {
// possibleKeyboard.frame=CGRectMake(0, 0, 320, 216);
// possibleKeyboard=[[possibleKeyboard subviews] objectAtIndex:0];
// UIKBDimmingVie=[[possibleKeyboard subviews] objectAtIndex:1];
// [UIKBDimmingVie removeFromSuperview];
// }
// if ([[possibleKeyboard description] hasPrefix:@"<UIKBKeyplaneView"]) {
// possibleKeyboard.frame=CGRectMake(0, 0, 320, 216);
// UIKBKeyViewArray=[possibleKeyboard subviews] ;
// }
//
// if ([[[UIKBKeyViewArray objectAtIndex:0] description] hasPrefix:@"<UIKBKeyView"]&&[UIKBKeyViewArray count]==7) {
//
// [[UIKBKeyViewArray objectAtIndex:0] setFrame:CGRectMake(1, 119, 40, 42)];
// [[UIKBKeyViewArray objectAtIndex:1] setFrame:CGRectMake(279, 119, 40, 42)];
// [[UIKBKeyViewArray objectAtIndex:2] setFrame:CGRectMake(1, 173, 38, 42)];
// [[UIKBKeyViewArray objectAtIndex:3] setFrame:CGRectMake(41, 173, 38, 42)];
// [[UIKBKeyViewArray objectAtIndex:4] setFrame:CGRectMake(121, 173, 118, 42)];
// [[UIKBKeyViewArray objectAtIndex:5] setFrame:CGRectMake(241, 173, 78, 42)];
// [[UIKBKeyViewArray objectAtIndex:6] setFrame:CGRectMake(81, 173, 38, 42)];
// }
}
if
NSLog(@"%@", [selfdisplayViews: keyboardWindow]);
}
}
问题原因：
1.之前的同事，为了切换页面，在AppDelegate.m里面，重新 self.window.rootViewController = mySwitchViewController; 目的就是为了切换页面
2.我把它改成用 登陆页面用 presentViewController 的方式，弹出，九宫格mySwitchViewController，页面，就完事了。一切正常，至少目前看来是这样。
以后还是用navigationController吧。经过这件事情，折腾了这么些天，有亮点收获
1.解决问题的思路：
排除法，正常路径是这样的，登陆页->九宫格-->tabbar里面的账户设置
（1）我在登陆页面，加了个按钮，登陆页->账户设置 没问题，看上去
（2）登陆页-->tabbar里面的账户设置 ->退出到登陆页 ,没问题
（3）登陆页->九宫格-->tabbar里面的账户设置->退出到九宫格->回到账户设置 有问题了
(2) 和(3)，退回的方式都是一样的，应该不是这里的问题，那么肯定是弹出的方式，不对了。我在登陆页，自己重写了弹出的代码，发现，竟然是好的。看了一下，同事遗留的写法，确实不是那么科学，至少在我看来。
搞定。
看来碰到问题，还是不能用打补丁的方法，还是得从根源解决问题。如果没有头绪，可以考虑排除法，从最简单的层次逻辑开始，一步一步，抽丝剥茧，顺藤摸瓜，自然就迎刃而解了。
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