iOS 数字键盘，能够打开文本键盘
<p><p>我有一个文本字段，我想在用户开始输入时使用这样的键盘:</p>
<p> <a href="/image/018pY.png" rel="noreferrer noopener nofollow"><img src="/image/018pY.png" alt="enter image description here"/></a> </p>
<p>也请观看此视频:<a href="https://youtu.be/iU_jocny3N0" rel="noreferrer noopener nofollow">https://youtu.be/iU_jocny3N0</a> </p>
<p>正如您在此视频中看到的，有一个“ABC”键可帮助用户从数字键盘切换到文本。并且当在文本中按“123”时，键盘会从文本切换到数字键盘。我想知道他们是怎么做到的？</p>
<p>我发现的唯一解决方案是向键盘添加 subview ，如下所述:</p>
<p> <a href="https://stackoverflow.com/questions/4360140/adding-done-button-to-only-number-pad-keyboard-on-iphone" rel="noreferrer noopener nofollow">Adding Done Button to Only Number Pad Keyboard on iPhone</a> </p>
<p>但是当用户使用自定义键盘时，这种方式可能不起作用。也不适用于从文本切换到数字键盘。</p>
<p>或者作为另一种解决方案，我知道 <code>accessoryInputView</code> 但这不像视频。它在键盘上方添加了一个工具栏。</p>
<p>有人知道此视频中使用的解决方案吗？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我在键盘上添加了逗号按钮，</p>
<p>Keyboard 也是一个简单的 <strong>UIView</strong>，其中包含 <strong>Controls</strong> </p>
<p>注意:这是旧代码在我的旧项目中运行 未在新项目中测试</p>
<pre><code>- (void) keyboardWillShow:(NSNotification *)note {
// create custom button
dispatch_async(dispatch_get_main_queue(), ^{
// Some code
UITextField *txt = (UITextField *);
if (txt.keyboardType == UIKeyboardTypeDecimalPad) {
UIButton * btnComma = ;
;
UIView* keyboard = ;
// btnComma.frame = CGRectMake(0, 162, 126, 54);
btnComma.frame = ;
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")) {
;
}
];
btnComma.adjustsImageWhenHighlighted = NO;
;
forState:UIControlStateNormal];
];
;
;
btnComma = nil;
}
});
}
- (UIView *) viewWithPrefix:(NSString *)prefix inView:(UIView *)view {
for (UIView *subview in view.subviews) {
if ([ hasPrefix:prefix]) {
return subview;
}
}
return nil;
}
</code></pre>
<p>这个从<strong>UIWindow</strong>中寻找键盘的方法</p>
<pre><code>- (UIView *) findKeyboard {
for (UIWindow* window in .windows) {
UIView *inputSetContainer = ;
if (inputSetContainer) {
UIView *inputSetHost = ;
if (inputSetHost) {
UIView *kbinputbackdrop = ;
if (kbinputbackdrop) {
UIView *theKeyboard = ;
return theKeyboard;
}
}
}
}
return nil;
}
</code></pre>
<p>和用于查找右下角按钮的大小</p>
<pre><code>- (CGRect ) findKeySizeForView:(UIView *)view {
if (view != nil) {
UIView *uiKeyboardImpl = ;
if (uiKeyboardImpl != nil) {
UIView *uiKeyboardLayoutStar = ;
if (uiKeyboardLayoutStar != nil) {
UIView *uiKBKeyplaneView = ;
if (uiKBKeyplaneView != nil) {
for (view in ) {
CGPoint pointOrigin =view.layer.frame.origin;
if (pointOrigin.x <= 0 && pointOrigin.y == uiKBKeyplaneView.frame.size.height - view.frame.size.height && [ hasPrefix:@"<UIKBKeyView"])
returnview.layer.frame;
}
}
}
}
}
return CGRectZero;
}
</code></pre></p>
<p style="font-size: 20px;">关于iOS 数字键盘，能够打开文本键盘，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/46585218/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/46585218/
</a>
</p>
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