Detailed explanation of the example code about react native click event

For example, if we define a TouchableOpacity click event, the method needs to receive a parameter value, as follows

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

Then the onPress attribute of the TouchableOption component should be written like this:

 <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>
   其中bind中的参数1：this代表的是上下文对象，后面跟的参数，对应私有方法中的参数顺序。

　

　

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