diff --git a/lib/FloatingLabel.js b/lib/FloatingLabel.js
index 5f96eab..e96676c 100644
--- a/lib/FloatingLabel.js
+++ b/lib/FloatingLabel.js
@@ -1,6 +1,7 @@
 'use strict';
-import React, {Component, PropTypes} from "react";
-import {StyleSheet, Animated} from "react-native";
+import React, {Component} from "react";
+import PropTypes from 'prop-types';
+import {StyleSheet, Animated, View, ViewPropTypes} from "react-native";
 
 export default class FloatingLabel extends Component {
   constructor(props: Object) {
@@ -11,8 +12,8 @@ export default class FloatingLabel extends Component {
       this.fontLarge = 13;
       this.fontSmall = 13;
     } else {
-      this.posTop = 16;
-      this.posBottom = 37;
+      this.posTop = ( props.posTop != null ) ? props.posTop : 16;
+      this.posBottom = ( props.posBottom != null ) ? props.posBottom : 37;
       this.fontLarge = 16;
       this.fontSmall = 12;
     }
@@ -50,6 +51,7 @@ export default class FloatingLabel extends Component {
       })
     ]).start();
   }
+
   render() : Object {
     let {
       label,
@@ -66,9 +68,7 @@ export default class FloatingLabel extends Component {
         }, styles.labelText, this.props.isFocused && {
           color: highlightColor
         }, style]}
-        onPress={()=> {
-          this.props.focusHandler();
-        }}
+        onPress={this.props.focusHandler}
       >
         {label}
       </Animated.Text>
@@ -82,7 +82,11 @@ FloatingLabel.propTypes = {
   labelColor: PropTypes.string,
   highlightColor: PropTypes.string,
   dense: PropTypes.bool,
-  style: PropTypes.object
+  style: PropTypes.oneOfType([
+    PropTypes.object,
+    ViewPropTypes.style
+  ]),
+  focusHandler: PropTypes.func.isRequired
 };
 
 const styles = StyleSheet.create({
diff --git a/lib/TextField.js b/lib/TextField.js
index d42523a..eb8d959 100644
--- a/lib/TextField.js
+++ b/lib/TextField.js
@@ -1,11 +1,17 @@
 'use strict';
-import React, {Component, PropTypes} from "react";
-import {View, TextInput, StyleSheet} from "react-native";
+import React, {Component} from "react";
+import PropTypes from 'prop-types';
+import {View, ViewPropTypes, TextInput, StyleSheet} from "react-native";
 
 import Underline from './Underline';
 import FloatingLabel from './FloatingLabel';
 
 export default class TextField extends Component {
+  _wrapper: null;
+  _input: null;
+  _underline: null;
+  _floatingLabel: null;
+
   constructor(props: Object, context: Object) {
     super(props, context);
     this.state = {
@@ -13,30 +19,94 @@ export default class TextField extends Component {
       text: props.value,
       height: props.height
     };
+
+    this.bindFunctions();
+  }
+
+  bindFunctions() {
+    this.onRefWrapper = this.onRefWrapper.bind(this);
+    this.onRefInput = this.onRefInput.bind(this);
+    this.onBlur = this.onBlur.bind(this);
+    this.onFocus = this.onFocus.bind(this);
+    this.onChangeText = this.onChangeText.bind(this);
+    this.onChange = this.onChange.bind(this);
+    this.onContentSizeChange = this.onContentSizeChange.bind(this);
+    this.onRefUnderline = this.onRefUnderline.bind(this);
+    this.onRefFloatingLabel = this.onRefFloatingLabel.bind(this);
+    this.focus = this.focus.bind(this);
   }
+
   focus() {
-    this.refs.input.focus();
+    if ( this.props.editable )
+      this._input.focus();
   }
   blur() {
-    this.refs.input.blur();
+    this._input.blur();
   }
   isFocused() {
     return this.state.isFocused;
   }
   measureLayout(...args){
-    this.refs.wrapper.measureLayout(...args)
+    this._wrapper.measureLayout(...args)
   }
   componentWillReceiveProps(nextProps: Object){
     if(this.props.text !== nextProps.value){
       nextProps.value.length !== 0 ?
-        this.refs.floatingLabel.floatLabel()
-        : this.refs.floatingLabel.sinkLabel();
+        this._floatingLabel.floatLabel()
+        : this._floatingLabel.sinkLabel();
       this.setState({text: nextProps.value});
     }
     if(this.props.height !== nextProps.height){
       this.setState({height: nextProps.height});
     }
   }
+
+  onRefWrapper(_wrapper) {
+    this._wrapper = _wrapper
+  }
+
+  onRefInput(_input) {
+    this._input = _input
+  }
+
+  onBlur() {
+    this.setState({isFocused: false});
+    !this.state.text.length && this._floatingLabel.sinkLabel();
+    this._underline.shrinkLine();
+    this.props.onBlur && this.props.onBlur();
+  }
+
+  onFocus() {
+    this.setState({isFocused: true});
+    this._floatingLabel.floatLabel();
+    this._underline.expandLine();
+    this.props.onFocus && this.props.onFocus();
+  }
+
+  onChangeText(text) {
+    this.setState({text});
+    this.props.onChangeText && this.props.onChangeText(text);
+  }
+
+  onChange(e) {
+    this.props.onChange && this.props.onChange(e);
+  }
+
+  onContentSizeChange(e) {
+    if(this.props.autoGrow){
+      this.setState({height: e.nativeEvent.contentSize.height});
+    }
+    this.props.onContentSizeChange && this.props.onContentSizeChange(e);
+  }
+
+  onRefUnderline(_underline) {
+    this._underline = _underline
+  }
+
+  onRefFloatingLabel(_floatingLabel) {
+    this._floatingLabel = _floatingLabel
+  }
+
   render() {
     let {
       label,
@@ -47,67 +117,50 @@ export default class TextField extends Component {
       textColor,
       textFocusColor,
       textBlurColor,
-      onFocus,
-      onBlur,
-      onChangeText,
-      onChange,
       value,
       dense,
       inputStyle,
       wrapperStyle,
       labelStyle,
       height,
-      autoGrow,
       multiline,
       ...props
     } = this.props;
     return (
-      <View style={[dense ? styles.denseWrapper : styles.wrapper, this.state.height ? {height: undefined}: {}, wrapperStyle]} ref="wrapper">
+      <View
+        ref={this.onRefWrapper}
+        style={[dense ? styles.denseWrapper : styles.wrapper, this.state.height ? {height: undefined}: null, wrapperStyle]}
+        collapsable={false}
+      >
         <TextInput
+          ref={this.onRefInput}
           style={[dense ? styles.denseTextInput : styles.textInput, {
             color: textColor
           }, (this.state.isFocused && textFocusColor) ? {
             color: textFocusColor
-          } : {}, (!this.state.isFocused && textBlurColor) ? {
+          } : null, (!this.state.isFocused && textBlurColor) ? {
             color: textBlurColor
-          } : {}, inputStyle,  this.state.height ? {height: this.state.height} : {}]}
+          } : null, inputStyle,  this.state.height ? {height: this.state.height} : null]}
           multiline={multiline}
-          onFocus={() => {
-            this.setState({isFocused: true});
-            this.refs.floatingLabel.floatLabel();
-            this.refs.underline.expandLine();
-            onFocus && onFocus();
-          }}
-          onBlur={() => {
-            this.setState({isFocused: false});
-            !this.state.text.length && this.refs.floatingLabel.sinkLabel();
-            this.refs.underline.shrinkLine();
-            onBlur && onBlur();
-          }}
-          onChangeText={(text) => {
-            this.setState({text});
-            onChangeText && onChangeText(text);
-          }}
-          onChange={(event) => {
-            if(autoGrow){
-              this.setState({height: event.nativeEvent.contentSize.height});
-            }
-            onChange && onChange(event);
-          }}
-          ref="input"
           value={this.state.text}
           {...props}
+
+          onFocus={this.onFocus}
+          onBlur={this.onBlur}
+          onChangeText={this.onChangeText}
+          onChange={this.onChange}
+          onContentSizeChange={this.onContentSizeChange}
         />
         <Underline
-          ref="underline"
+          ref={this.onRefUnderline}
           highlightColor={highlightColor}
           duration={duration}
           borderColor={borderColor}
         />
         <FloatingLabel
+          ref={this.onRefFloatingLabel}
           isFocused={this.state.isFocused}
-          ref="floatingLabel"
-          focusHandler={this.focus.bind(this)}
+          focusHandler={this.focus}
           label={label}
           labelColor={labelColor}
           highlightColor={highlightColor}
@@ -115,6 +168,8 @@ export default class TextField extends Component {
           dense={dense}
           hasValue={(this.state.text.length) ? true : false}
           style={labelStyle}
+          posTop={this.props.posTop}
+          posBottom={this.props.posBottom}
         />
       </View>
     );
@@ -133,15 +188,26 @@ TextField.propTypes = {
   onFocus: PropTypes.func,
   onBlur: PropTypes.func,
   onChangeText: PropTypes.func,
+  onContentSizeChange: PropTypes.func,
   onChange: PropTypes.func,
   value: PropTypes.string,
   dense: PropTypes.bool,
-  inputStyle: PropTypes.object,
-  wrapperStyle: PropTypes.object,
-  labelStyle: PropTypes.object,
+  inputStyle: PropTypes.oneOfType([
+    PropTypes.object,
+    ViewPropTypes.style
+  ]),
+  wrapperStyle: PropTypes.oneOfType([
+    PropTypes.object,
+    ViewPropTypes.style
+  ]),
+  labelStyle: PropTypes.oneOfType([
+    PropTypes.object,
+    ViewPropTypes.style
+  ]),
   multiline: PropTypes.bool,
   autoGrow: PropTypes.bool,
-  height: PropTypes.oneOfType([PropTypes.oneOf(undefined), PropTypes.number])
+  height: PropTypes.number,
+  editable: PropTypes.bool
 };
 
 TextField.defaultProps = {
@@ -154,7 +220,8 @@ TextField.defaultProps = {
   underlineColorAndroid: 'rgba(0,0,0,0)',
   multiline: false,
   autoGrow: false,
-  height: undefined
+  height: undefined,
+  editable: true
 };
 
 const styles = StyleSheet.create({
diff --git a/lib/Underline.js b/lib/Underline.js
index 4368733..6afe146 100644
--- a/lib/Underline.js
+++ b/lib/Underline.js
@@ -1,21 +1,25 @@
 'use strict';
-import React, {Component, PropTypes} from "react";
+import React, {Component} from "react";
+import PropTypes from 'prop-types';
 import {View, StyleSheet, Animated} from "react-native";
 
 export default class Underline extends Component {
+  _wrapper: null;
+
   constructor(props: Object) {
     super(props);
     this.state = {
       lineLength: new Animated.Value(0),
     };
     this.wrapperWidth = 0;
+    this.onRefWrapper = this.onRefWrapper.bind(this);
   }
   componentDidMount() {
     requestAnimationFrame(() => {
-      if (this.refs.wrapper == null) {
+      if (this._wrapper == null) {
         return;
       }
-      const container = this.refs.wrapper;  // un-box animated view
+      const container = this._wrapper;  // un-box animated view
       container.measure((left, top, width, height) => {
         this.wrapperWidth = width;
       });
@@ -33,6 +37,11 @@ export default class Underline extends Component {
       duration: this.props.duration
     }).start();
   }
+
+  onRefWrapper(_wrapper) {
+    this._wrapper = _wrapper
+  }
+
   render() {
     let {
       borderColor,
@@ -40,17 +49,19 @@ export default class Underline extends Component {
     } = this.props;
     return (
       <View
+        ref={this.onRefWrapper}
         style={[styles.underlineWrapper, {
           backgroundColor: borderColor
         }]}
-        ref="wrapper"
       >
         <Animated.View
-          style={[{
-            width: this.state.lineLength,
-            height: 1,
-            backgroundColor: highlightColor
-          }]}>
+          style={[
+            styles.wrapperHighlight,
+            {
+              width: this.state.lineLength,
+              backgroundColor: highlightColor
+            }
+          ]}>
         </Animated.View>
       </View>
     );
@@ -67,5 +78,8 @@ const styles = StyleSheet.create({
   underlineWrapper: {
     height: 1,
     alignItems: 'center'
+  },
+  wrapperHighlight: {
+    height: 1
   }
 });