Append TextInput component one after another when press button in React Native

Question

I am new in React Native.

I am using two button to add TextInput component in the view. When I press Add button, it pushes on

Answer 1

The problem is that you are calling insertSomeThing function and this function push a new <Text> in variable arr and then it is rendered in the following order:

</View>
    { arr }
    {arrAnother}
</View>

If you want to insert a different TextView at the end of the list you must remove {arrAnother} and modify your map functions. Your code will look like this:

insertSomeThing( placeholder ){
  this.state.arr.push({index:index++, placeholder:placeholder});
  this.setState({ arr: this.state.arr });
}

render() {
  let arr = this.state.arr.map((r, i) => {
    return (
      <View key={ i } style={styles.insertStyle}>
        <TextInput placeholder = {r.placeholder} />
      </View>
    );
  });

  return (
    <View style={styles.container}>
      <View>
        <TouchableHighlight 
          onPress={ () => this.insertSomeThing('add') } 
          style={styles.button}>

          <Text>Add</Text>
        </TouchableHighlight>
      </View>
      <View>
        <TouchableHighlight 
          onPress={ () => this.insertSomeThing('addAgain') } 
          style={styles.button}>
             <Text>Add Again</Text>
        </TouchableHighlight>
      </View>
      { arr }
    </View>
  );
}

EDIT

To handle onChangeText your TextInput will look like this:

let arr = this.state.arr.map((r, i) => {

    var ref = 'textinput'+i;

    return (
      <View key={ i } style={styles.insertStyle}>
        <TextInput ref={ref} onChangeText={(text) => this._onChangeText(text,ref)} />
      </View>
    );
  });

You have to define _onChangeText in your component to handle the event. You will receive text and reference to the input. You later can reference the input using this.refs[ref].