<View style={{
    width:dwidth-20,marginHorizontal:20,height:80,marginTop:height/7}}>

             <TextInput
             style={{color:'black',width:width-60, borderColor: 'black'}}
             placeholder="Ask your Question ?"
             underlineColorAndroid='black'
             autoCapitalize="words"
             placeholderTextColor="black"
             keyboardType = "default"
             error = {this.state.errpwd}
             onBlur={() => this.setState({errpwd:""})}
             onChangeText={ (questionText) => this.setState({input: questionText}) }/>

               <View style={styles.section}>
                       <PowerTranslator style={styles.p}
                       text={'user input: ' + this.state.input} />
                   </View>
             </View>

<TextInput
          style={styles.input}
          value={this.state.inputValue}      // Here you can set the value you want
          controlled={true}
          onChangeText={(text) => this.setState({ inputValue: text })}
          onSubmitEditing={this.handleSubmitEditing.bind(this)}
        />

<TextInput
     ref = {yourTextInputRef}
     style={{color:'black',width:width-60, borderColor: 'black'}}
     placeholder="Ask your Question ?"
     underlineColorAndroid='black'
     autoCapitalize="words"
     placeholderTextColor="black"
     keyboardType = "default"
     error = {this.state.errpwd}
     onBlur={() => this.setState({errpwd:""})}
     onChangeText={ (questionText) => this.setState({input: questionText}) }/>

this.refs.yourTextInputRef.setNativeProps({text: 'SET_YOUR_VALUE_HERE'});