React native click the event to pass the parameter, reactnative

React native click the event to pass the parameter, reactnative

For example, if we define a TouchableOpacity click event, this method needs to receive a parameter value, as shown below:

_ GotoSubClass (sectionID, rowID) {console. log ("sectionID =" + sectionID + "rowID =" + rowID );}

The onPress attribute of the TouchableOption component should be written as follows:

<TouchableOpacity onPress = {() => this. _ gotoSubClass (sectionID, rowID) }>< Text >{ rowData. title} </Text> </TouchableOpacity

Or

<TouchableOpacity onPress = {this. _ gotoSubClass. bind (this, sectionID, rowID) }>< Text> {rowData. title }</Text> </TouchableOpacity> among them, parameter 1 in bind: this indicates the context object, followed by parameters, and corresponds to the parameter order in the private method.