React Native Touchable is disabling ScrollView

问题:

I'm new to React Native, so am probably asking something very obvious, but please help.

I have a view wrapped in a touchable, so that the whole area responds to tapping. Then have a ScrollView nested inside the view. The overall structure is something like this:

<TouchableWithoutFeedback onPress={this.handlePress.bind(this)}>
    <View>
        <ScrollView>
            <Text>Hello, here is a very long text that needs scrolling.</Text>
        <ScrollView>
    </View>
</TouchableWithoutFeedback>

When this compiles and runs, the tapping is detected, but the scroll view doesn't scroll at all. I made the above code short and simple, but each component has the proper styling and I can see everything rendering fine and the long text is cutoff at the bottom of the ScrollView. Please help.

Thank you!

回答1:

I'm using this structure it's working for me:

<TouchableWithoutFeedback onPress={() => {}}>
    {other content}   
    <View onStartShouldSetResponder={() => true}>
        <ScrollView>
            {scrollable content}
        </ScrollView>
    </View>
</TouchableWithoutFeedback>

回答2:

This is what worked for me:

<TouchableWithoutFeedback onPress={...}>
  <View>
    <ScrollView>
      <View onStartShouldSetResponder={() => true}>
        // Scrollable content
      </View>
    </ScrollView>
  </View>
</TouchableWithoutFeedback>

The onStartShouldSetResponder prop stops the touch event propagation towards the TouchableWithoutFeedback element.

回答3:

You can have a scrollView or FlatList inside a TouchableWithoutFeedback. Tho you shouldn't but some times you have no other choice to go. Taking a good look at this questions and answer validates that. close react native modal by clicking on overlay, how to dismiss modal by tapping screen in react native.

For the Question, The only way you can make it work (atleast that i know of), or the simplest way is to add a TouchableOpacity around Text in your code like this,

 <TouchableWithoutFeedback onPress={this.handlePress.bind(this)}>
    <View>
        <ScrollView>
          <TouchableOpacity>
            <Text>Hello, here is a very long text that needs scrolling.</Text>
          </TouchableOpacity>
        <ScrollView>
    </View>
</TouchableWithoutFeedback>

Note: TouchableOpacity is a wrapper for making Views respond properly to touches so automatically you can style it the way you would have styled your View Component then set some of its special props to whatever you want e.g activeOpacity etc. Moreso you can use TouchableHighlight it works, but it receives one child element i.e you enclose all your component inside a parent one.

回答4:

I found that for my situation the other examples did not work as they disabled the ability to click or disabled the ability to scroll. I instead used:

<FlatList
      data={[{key: text1 }, { key: text2 } ...]}
      renderItem={({ item }) => (
        <TouchableWithoutFeedback onPress={this.onPressContent}>
          <Text style={styles.text}>{item.key}</Text>
        </TouchableWithoutFeedback>
      )}
 />

I happend to need to multiple chunks but you could use single element in the data array for one piece of text. This let the press event to fire as well as let the text scroll.

回答5:

Thats write , you cannot have a scroll view inside the TouchableWithoutFeedback, it the property of react native that it will disable it, you can instead have your scroll view outside the TouchableWithoutFeedback tab and add the other contents that you want upon the click inside a view tag.

You can also use the Touchable Highlights instead, if the TouchableWithoutFeedback does not works.