如何调整键盘大小UITextView以及如何使用UIKeyboardFrameEndUserInfoKey日语键盘?以下用于调整大小的代码UITextView在标准键盘上运行良好.但不适合日本人.怎么解决?
- (void)keyboardWillShow:(NSNotification *)aNotification {
[self moveTextViewForKeyboard:aNotification up:YES];
}
- (void)keyboardWillHide:(NSNotification *)aNotification {
[self moveTextViewForKeyboard:aNotification up:NO];
}
- (void) moveTextViewForKeyboard:(NSNotification*)aNotification up: (BOOL) up
{
NSDictionary* userInfo = [aNotification userInfo];
// Get animation info from userInfo
NSTimeInterval animationDuration;
UIViewAnimationCurve animationCurve;
CGRect keyboardEndFrame;
[[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] getValue:&animationCurve];
[[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:&animationDuration];
[[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardEndFrame];
// Animate up or down
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:animationDuration];
[UIView setAnimationCurve:animationCurve];
CGRect newFrame = textView.frame;
CGRect keyboardFrame = [self.view convertRect:keyboardEndFrame toView:nil];
newFrame.size.height -= …Run Code Online (Sandbox Code Playgroud) 需要创建一个带有新变量的类别(类型为NSArray).
OriginalClass + Extension.h:
@interface OriginalClass (Extension) {
NSArray *_array;
}
@property (nonatomic, retain) NSArray *array;
@end
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但我得到了错误:Cannot declare variable inside @interface or @protocol.
请帮忙解决问题.
在 Python 中绘制 3d 数组的最有效方法是什么?
例如:
volume = np.random.rand(512, 512, 512)
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其中数组项表示每个像素的灰度颜色。
以下代码运行速度太慢:
import matplotlib as mpl
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.gca(projection='3d')
volume = np.random.rand(20, 20, 20)
for x in range(len(volume[:, 0, 0])):
for y in range(len(volume[0, :, 0])):
for z in range(len(volume[0, 0, :])):
ax.scatter(x, y, z, c = tuple([volume[x, y, z], volume[x, y, z], volume[x, y, z], 1]))
plt.show()
Run Code Online (Sandbox Code Playgroud) 我刚刚构建了EmbeddedWebBrowser_XE2.dpk,之后尝试安装它 - 所有这些都是通过IDE内部项目的上下文菜单完成的.并得到错误:
Package can't be installed because it was created with a different version of Delphi or CBuilder?
谢谢您的帮助!
创建以下html页面:
<textarea id="code" rows="10"></textarea>
<script>
document.onkeydown = function(event) {
alert(event.keyCode);
}
</script>
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在Mobile Safari上打开它(在模拟器上或带键盘的设备上),点击textarea开始编辑.现在按任意箭头键 - 事件不会触发.
如何检测箭头键的按键?
关于Apple Bug报告系统的PS相关问题:13243285
如何重置 CSS 文件中类的所有继承属性?我需要能够在元素上设置新属性,而预定义属性不会对其产生影响。
仅使用 CSS 可以吗?
我不是在谈论 CSS 重置,例如:
body {
margin:0px;
padding:0px;
}
Run Code Online (Sandbox Code Playgroud) 复制\xe2\x80\x9d 期间\xe2\x80\x9cStrip 调试符号和\xe2\x80\x9cStrip 链接产品\xe2\x80\x9d 选项之间有什么区别?
如果 \xe2\x80\x9cStrip 复制期间调试符号\xe2\x80\x9d = YES 和 \xe2\x80\x9cStrip 链接产品\xe2\x80\x9d = NO 是什么意思?
是否可以使用单独的 .dsym 文件(而不是二进制文件)上的符号数据将应用程序上传到 App Store?
CFBundleTypeIconFile在 iOS 应用程序上添加自定义文件类型支持是否必须使用数组?我在 iOS SDK 帮助中找到了不同的信息。
我们在这里看到该CFBundleTypeIconFile数组是强制性的:
The entry for each document type should contain the following keys:\n\nCFBundleTypeIconFile\nCFBundleTypeName\nCFBundleTypeRole\n\nIn addition to these keys, it must contain at least one of the following keys:\n\nLSItemContentTypes\nCFBundleTypeExtensions\nCFBundleTypeMIMETypes\nCFBundleTypeOSTypes\nRun Code Online (Sandbox Code Playgroud)\n\n\n\n在这里我们可以看到该CFBundleTypeIconFile数组不是强制性的:
Each dictionary in the CFBundleDocumentTypes array can include the following keys:\n\nCFBundleTypeName specifies the name of the document type.\nCFBundleTypeIconFiles is an array of filenames for the image resources to use as the document\xe2\x80\x99s icon.\nLSItemContentTypes contains an array …Run Code Online (Sandbox Code Playgroud) 通常我们运行javascript代码来设置任何值:
document.getElementById('id_name').value = "...";
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但我有一个这样的页面:
<div id="id_name">
<div class="class_name">
<textarea></textarea>
</div>
</div>
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如何通过javascript设置textarea的值?
非常感谢您的帮助!
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