When a v-text-field component is populated with text or focused by the user, an animation triggers to move the label text up and to the left, and the field changes color like so:
I am trying to build a multi-select component using the v-text-field component. The reason I can't use a v-select is that my data-set is nested which is currently unsupported.
Is there a way to programmatically trigger this animation without having to focus the field?
I found a workaround that suits my purposes. There is a prop on the v-text-field component called persistent-placeholder which forces the label into the post-animated state when true.
Related
I'm using the React Native Base Button component.
When I pass it the disabled prop, it successfully disables it, but (unlike in the documentation) the color doesn't change at all to indicate the disabled state. Any idea if I need to do something else or am doing something wrong?
The disabled prop does disable the button, but if you look closely at the documentation it's using a different prop, isDisabled. That prop disables it and affects the color.
<Button isDisabled> Press Me </Button>
I have a Text component which I would like to make selectable. I provided the Text component the selectable prop, however it isn't working. I am pretty sure that it is because I have it nested in a ScrollView and my pressing it is only registering on the scrollview. Any way to get past this?
Can provide a code example if needed.
I am rendering my UIComponents some of them are custom UIComponents like radio button,Check box from a plist.How can I add values programmaticaly inorder to display that value when rendered?
Consider the TextInput component of React Native. It has a prop called value. I set the value to this.state.text.
It also has a prop onChangeText, which I set to (text) => {this.setState({text: text}).
Setting the state will cause the view to re-render, which will in turn trigger setValue on the component.
This doesn't cause any sort of recursion or undesired behavior with stock components. However, in building my own text input component, I'm finding that using state in value and in onChangeText causes native input events to re-render the view and call setValue.
i.e user types on keyboard, native module emits onChangeText event, JavaScript component receives event and updates state, state change causes re-render, re-render calls setValue on the native component, and the native component swaps out the text with the value received from the initial event (the same value).
The problem is, when you set the text on an iOS or Android native text component, it resets the cursor. So I tried putting in a conditional if(newText != currentText) {setText(newText)}, and this works when you type slow, but when you type fast, things get chaotic and you can't predict the order of events.
I looked at how the React Native authors handle this in their own text component, and they seem to be using some sort of counter (here and here) to synchronize events, but I couldn't keep up with the logic as it was all over the place.
For now, my solution is to not use state in the render function, but then my component depends on render not being called unexpectedly to function properly, and that's just a disaster waiting to happen.
Any insight as how to better design a component like this, or how RN components get around this issue?
In my React-Native app, I have a ListView with each row being rendered by following "Solution 2". Inside my row, I have a couple of custom TouchableHighlight components. When I press the "Delete" button in my row, I'd like it to replace the entire row or all the button components in the row, with a Text component saying, "This item has been deleted".
Does anyone have any idea of how to accomplish this? I'm not sure how to link my child component's onPress method (Delete button) to the parent component (Row) and have the Row replace its content with a Text component.
I created this code snippet to reproduce what you have described: https://snack.expo.io/Bk9-6VNLW.
You can accomplish the UI change by mutating the state of your row component which will trigger the update of your component. And by reading the deleted state, you can decide what components to render whether is a set of <TouchableHighlight>' buttons or just a` component.