picker

问题 In Xamarin Forms, here's the default iOS Picker: How do I remove the shortcut bar (undo / redo / copy / paste)? 回答1: In your custom renderer, you simply need to set the Control's InputAssistantItem.LeadingBarButtonGroups and InputAssistantItem.TrailingBarButtonGroups to null . The renderer would look something like this: 来源： https://stackoverflow.com/questions/37442203/xamarin-forms-ios-remove-shortcut-bar-from-picker

问题 This example makes it possible to click a legend and thereby change a plot. I want to do something similar, but then not by clicking the legend, just by clicking the line in the plot. I tried to do it like this: self.ax = self.fig.add_subplot(1,2,1) data = NP.array(2,10) #filled with numbers self.x = NP.arange(2) for line in range(len(data[0,:])): self.ax.plot(self.x, data[:,line], picker=5) In every loop, an extra line is plotted. One line consists of 2 points, so it draws a straight line.

问题 I have this custompicker class in android project: public class CustomPickerRenderer : PickerRenderer { private Context context; private IElementController ElementController => Element as IElementController; private AlertDialog _dialog; public CustomPickerRenderer(Context context) : base(context) { this.context = context; } protected override void OnElementChanged(ElementChangedEventArgs<Picker> e) { base.OnElementChanged(e); if (Control == null || e.NewElement == null) return; Control.Click

问题 I have seen ways to make shortcuts, but I need to find a way to get a list of shortcuts installed on the phone. I want my user to be able to select one of his/her shortcuts and launch it from my application. Is there a way to do this (an API) or will I need a reflection method to call a system service? 回答1: The shortcuts are private to Launcher. There is no API, and anything you try to do will be very fragile as different launcher implementations (and versions) will have different storage

问题 I'm using aFileChooser android library project in my app to select the file from external storage. but it doesn't seem to pick only directory to let user select the download location to download the files. Is there any android library project which support both pick file and pick directory? I understand there are multiple questions have been answered here either for file chooser or directory chooser but after extensive search I couldn't find one for both directory and file chooser. Any help

问题 I was able to change my font color but I also need to change font size, how can I accomplish that? Here's my code for chaning the color, - (NSAttributedString *)pickerView:(UIPickerView *)pickerView attributedTitleForRow:(NSInteger)row forComponent:(NSInteger)component { NSString *title = _currencyName[row]; NSAttributedString *attString = [[NSAttributedString alloc] initWithString:title attributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}]; return attString; } UPDATE: this didn

问题 The problem: I set a color in Interface Builder, setting the channels RGB, then I do a screenshot of the working window, open it in Photoshop and check color by color picker, which I have set in Interface Builder. The result - the RGB values ​​are different from the ones I set. Video: http://www.youtube.com/watch?v=ASLfnYHPbqM Most abnormal begins with the 45th second, when I tried to use the color picker of the Interface Builder. It shows the RGB values ​​are different from those that I have

问题 I'm using the standard CalendarView in one of my projects. When I display it in a dialog, it seems to work normally, but when I display it in another activity in the app, it seems to leave out a few weeks at random. Scrolling up and down through the calendar causes them to appear again, but others to disappear. Often the missing week is the one including the date that I set it to using setDate() so no selected date is even shown. Has anyone else seen this behavior with CalendarView ? I'm

问题 I'm using this date picker: http://www.eyecon.ro/bootstrap-datepicker/ 2 questions: Anyone know how to make it work in Internet Explorer? It just doesn't, try it. How can I configure it such that it selects entire weeks? (if a person selects a specific day in the week, the value passed is the start of the week, it would also be good if it highlights the entire week on hover) 回答1: You can try https://github.com/eternicode/bootstrap-datepicker which is an improved version of datepicker by

问题 numberPicker1= (NumberPicker) findViewById(R.id.numberPicker1); final String genders[] = { "red", "blue", "green"}; numberPicker1.setMinValue(0); numberPicker1.setMaxValue(genders.length - 1); numberPicker1.setDisplayedValues(genders); numberPicker1.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);; NumberPicker.OnValueChangeListener myValChangedListener = new NumberPicker.OnValueChangeListener() { @Override public void onValueChange(NumberPicker picker, int oldVal, int newVal)