diff --git a/src/Index.tsx b/src/Index.tsx
index d8cbc5e2..5cffe4a8 100644
--- a/src/Index.tsx
+++ b/src/Index.tsx
@@ -7,7 +7,6 @@ import React from 'react'
 import { Feather } from '@expo/vector-icons'
 import store from 'src/stacks/common/store'
 import { Provider } from 'react-redux'
-import { SafeAreaProvider } from 'react-native-safe-area-context'
 import Toast from 'react-native-toast-message'
 import { StatusBar } from 'expo-status-bar'
 
@@ -25,66 +24,64 @@ export const Index: React.FC = () => {
     <Provider store={store}>
       <StatusBar style='auto' />
 
-      <SafeAreaProvider>
-        <NavigationContainer>
-          <Tab.Navigator
-            screenOptions={({ route }) => ({
-              tabBarIcon: ({ focused, color, size }) => {
-                let name: string
-                switch (route.name) {
-                  case 'Local':
-                    name = 'home'
-                    break
-                  case 'Public':
-                    name = 'globe'
-                    break
-                  case 'PostRoot':
-                    name = 'plus'
-                    break
-                  case 'Notifications':
-                    name = 'bell'
-                    break
-                  case 'Me':
-                    name = focused ? 'smile' : 'meh'
-                    break
-                  default:
-                    name = 'alert-octagon'
-                    break
-                }
-                return <Feather name={name} size={size} color={color} />
+      <NavigationContainer>
+        <Tab.Navigator
+          screenOptions={({ route }) => ({
+            tabBarIcon: ({ focused, color, size }) => {
+              let name: string
+              switch (route.name) {
+                case 'Local':
+                  name = 'home'
+                  break
+                case 'Public':
+                  name = 'globe'
+                  break
+                case 'PostRoot':
+                  name = 'plus'
+                  break
+                case 'Notifications':
+                  name = 'bell'
+                  break
+                case 'Me':
+                  name = focused ? 'smile' : 'meh'
+                  break
+                default:
+                  name = 'alert-octagon'
+                  break
+              }
+              return <Feather name={name} size={size} color={color} />
+            }
+          })}
+          tabBarOptions={{
+            activeTintColor: 'black',
+            inactiveTintColor: 'gray',
+            showLabel: false
+          }}
+        >
+          <Tab.Screen name='Local' component={Local} />
+          <Tab.Screen name='Public' component={Public} />
+          <Tab.Screen
+            name='PostRoot'
+            component={PostRoot}
+            listeners={({ navigation, route }) => ({
+              tabPress: e => {
+                e.preventDefault()
+                const {
+                  length,
+                  [length - 1]: last
+                } = navigation.dangerouslyGetState().history
+                navigation.navigate(last.key.split(new RegExp(/(.*?)-/))[1], {
+                  screen: 'PostToot'
+                })
               }
             })}
-            tabBarOptions={{
-              activeTintColor: 'black',
-              inactiveTintColor: 'gray',
-              showLabel: false
-            }}
-          >
-            <Tab.Screen name='Local' component={Local} />
-            <Tab.Screen name='Public' component={Public} />
-            <Tab.Screen
-              name='PostRoot'
-              component={PostRoot}
-              listeners={({ navigation, route }) => ({
-                tabPress: e => {
-                  e.preventDefault()
-                  const {
-                    length,
-                    [length - 1]: last
-                  } = navigation.dangerouslyGetState().history
-                  navigation.navigate(last.key.split(new RegExp(/(.*?)-/))[1], {
-                    screen: 'PostToot'
-                  })
-                }
-              })}
-            />
-            <Tab.Screen name='Notifications' component={Notifications} />
-            <Tab.Screen name='Me' component={Me} />
-          </Tab.Navigator>
+          />
+          <Tab.Screen name='Notifications' component={Notifications} />
+          <Tab.Screen name='Me' component={Me} />
+        </Tab.Navigator>
 
-          <Toast ref={(ref: any) => Toast.setRef(ref)} />
-        </NavigationContainer>
-      </SafeAreaProvider>
+        <Toast ref={(ref: any) => Toast.setRef(ref)} />
+      </NavigationContainer>
     </Provider>
   )
 }
diff --git a/src/stacks/Shared/PostToot.tsx b/src/stacks/Shared/PostToot.tsx
index e4e1882e..8ab8cf55 100644
--- a/src/stacks/Shared/PostToot.tsx
+++ b/src/stacks/Shared/PostToot.tsx
@@ -1,5 +1,12 @@
-import React, { ReactNode, useReducer } from 'react'
-import { Alert, Pressable, Text } from 'react-native'
+import React, { ReactNode, useEffect, useReducer, useState } from 'react'
+import {
+  Alert,
+  Keyboard,
+  KeyboardAvoidingView,
+  Pressable,
+  Text
+} from 'react-native'
+import { SafeAreaView } from 'react-native-safe-area-context'
 import { createNativeStackNavigator } from 'react-native-screens/native-stack'
 import { useNavigation } from '@react-navigation/native'
 
@@ -24,11 +31,6 @@ export type PostState = {
       }
     | undefined
   emojis: mastodon.Emoji[] | undefined
-  height: {
-    view: number
-    editor: number
-    keyboard: number
-  }
 }
 
 export type PostAction =
@@ -52,10 +54,6 @@ export type PostAction =
       type: 'emojis'
       payload: PostState['emojis']
     }
-  | {
-      type: 'height'
-      payload: Partial<PostState['height']>
-    }
 
 const postInitialState: PostState = {
   text: {
@@ -66,12 +64,7 @@ const postInitialState: PostState = {
   selection: { start: 0, end: 0 },
   overlay: null,
   tag: undefined,
-  emojis: undefined,
-  height: {
-    view: 0,
-    editor: 0,
-    keyboard: 0
-  }
+  emojis: undefined
 }
 const postReducer = (state: PostState, action: PostAction): PostState => {
   switch (action.type) {
@@ -85,8 +78,6 @@ const postReducer = (state: PostState, action: PostAction): PostState => {
       return { ...state, tag: action.payload }
     case 'emojis':
       return { ...state, emojis: action.payload }
-    case 'height':
-      return { ...state, height: { ...state.height, ...action.payload } }
     default:
       throw new Error('Unexpected action')
   }
@@ -95,77 +86,102 @@ const postReducer = (state: PostState, action: PostAction): PostState => {
 const PostToot: React.FC = () => {
   const navigation = useNavigation()
 
+  const [hasKeyboard, setHasKeyboard] = useState(false)
+  useEffect(() => {
+    Keyboard.addListener('keyboardWillShow', _keyboardDidShow)
+    Keyboard.addListener('keyboardWillHide', _keyboardDidHide)
+
+    // cleanup function
+    return () => {
+      Keyboard.removeListener('keyboardWillShow', _keyboardDidShow)
+      Keyboard.removeListener('keyboardWillHide', _keyboardDidHide)
+    }
+  }, [])
+  const _keyboardDidShow = () => {
+    setHasKeyboard(true)
+  }
+  const _keyboardDidHide = () => {
+    setHasKeyboard(false)
+  }
+
   const [postState, postDispatch] = useReducer(postReducer, postInitialState)
 
   return (
-    <Stack.Navigator>
-      <Stack.Screen
-        name='PostMain'
-        options={{
-          headerLeft: () => (
-            <Pressable
-              onPress={() =>
-                Alert.alert('确认取消编辑？', '', [
-                  { text: '继续编辑', style: 'cancel' },
-                  {
-                    text: '退出编辑',
-                    style: 'destructive',
-                    onPress: () => navigation.goBack()
-                  }
-                ])
-              }
-            >
-              <Text>退出编辑</Text>
-            </Pressable>
-          ),
-          headerCenter: () => <></>,
-          headerRight: () => (
-            <Pressable
-              onPress={async () => {
-                if (postState.text.count < 0) {
-                  Alert.alert('字数超限', '', [
-                    {
-                      text: '返回继续编辑'
-                    }
-                  ])
-                } else {
-                  const res = await client({
-                    method: 'post',
-                    instance: 'local',
-                    endpoint: 'statuses',
-                    headers: {
-                      'Idempotency-Key':
-                        Date.now().toString() + Math.random().toString()
-                    },
-                    query: { status: postState.text.raw }
-                  })
-                  if (res.body.id) {
-                    Alert.alert('发布成功', '', [
+    <KeyboardAvoidingView behavior='padding' style={{ flex: 1 }}>
+      <SafeAreaView
+        style={{ flex: 1 }}
+        edges={hasKeyboard ? ['left', 'right'] : ['left', 'right', 'bottom']}
+      >
+        <Stack.Navigator>
+          <Stack.Screen
+            name='PostMain'
+            options={{
+              headerLeft: () => (
+                <Pressable
+                  onPress={() =>
+                    Alert.alert('确认取消编辑？', '', [
+                      { text: '继续编辑', style: 'cancel' },
                       {
-                        text: '好的',
+                        text: '退出编辑',
+                        style: 'destructive',
                         onPress: () => navigation.goBack()
                       }
                     ])
-                  } else {
-                    Alert.alert('发布失败', '', [
-                      {
-                        text: '返回重试'
-                      }
-                    ])
                   }
-                }
-              }}
-            >
-              <Text>发嘟嘟</Text>
-            </Pressable>
-          )
-        }}
-      >
-        {props => (
-          <PostMain postState={postState} postDispatch={postDispatch} />
-        )}
-      </Stack.Screen>
-    </Stack.Navigator>
+                >
+                  <Text>退出编辑</Text>
+                </Pressable>
+              ),
+              headerCenter: () => <></>,
+              headerRight: () => (
+                <Pressable
+                  onPress={async () => {
+                    if (postState.text.count < 0) {
+                      Alert.alert('字数超限', '', [
+                        {
+                          text: '返回继续编辑'
+                        }
+                      ])
+                    } else {
+                      const res = await client({
+                        method: 'post',
+                        instance: 'local',
+                        endpoint: 'statuses',
+                        headers: {
+                          'Idempotency-Key':
+                            Date.now().toString() + Math.random().toString()
+                        },
+                        query: { status: postState.text.raw }
+                      })
+                      if (res.body.id) {
+                        Alert.alert('发布成功', '', [
+                          {
+                            text: '好的',
+                            onPress: () => navigation.goBack()
+                          }
+                        ])
+                      } else {
+                        Alert.alert('发布失败', '', [
+                          {
+                            text: '返回重试'
+                          }
+                        ])
+                      }
+                    }
+                  }}
+                >
+                  <Text>发嘟嘟</Text>
+                </Pressable>
+              )
+            }}
+          >
+            {props => (
+              <PostMain postState={postState} postDispatch={postDispatch} />
+            )}
+          </Stack.Screen>
+        </Stack.Navigator>
+      </SafeAreaView>
+    </KeyboardAvoidingView>
   )
 }
 
diff --git a/src/stacks/Shared/PostToot/PostMain.tsx b/src/stacks/Shared/PostToot/PostMain.tsx
index 27d36d0e..ec5cdc41 100644
--- a/src/stacks/Shared/PostToot/PostMain.tsx
+++ b/src/stacks/Shared/PostToot/PostMain.tsx
@@ -1,4 +1,10 @@
-import React, { createElement, Dispatch, useCallback, useEffect } from 'react'
+import React, {
+  createElement,
+  Dispatch,
+  useCallback,
+  useEffect,
+  useState
+} from 'react'
 import {
   Keyboard,
   Pressable,
@@ -7,7 +13,6 @@ import {
   TextInput,
   View
 } from 'react-native'
-import { SafeAreaView } from 'react-native-safe-area-context'
 import { Feather } from '@expo/vector-icons'
 import { debounce, differenceWith, isEqual } from 'lodash'
 
@@ -24,27 +29,7 @@ export interface Props {
 }
 
 const PostMain: React.FC<Props> = ({ postState, postDispatch }) => {
-  useEffect(() => {
-    Keyboard.addListener('keyboardDidShow', _keyboardDidShow)
-    Keyboard.addListener('keyboardDidHide', _keyboardDidHide)
-
-    return () => {
-      Keyboard.removeListener('keyboardDidShow', _keyboardDidShow)
-      Keyboard.removeListener('keyboardDidHide', _keyboardDidHide)
-    }
-  }, [])
-  const _keyboardDidShow = (props: any) => {
-    postDispatch({
-      type: 'height',
-      payload: { keyboard: props.endCoordinates.height }
-    })
-  }
-  const _keyboardDidHide = () => {
-    postDispatch({
-      type: 'height',
-      payload: { keyboard: 0 }
-    })
-  }
+  const [editorMinHeight, setEditorMinHeight] = useState(0)
 
   const { data: emojisData } = useQuery(['Emojis'], emojisFetch)
   useEffect(() => {
@@ -54,15 +39,10 @@ const PostMain: React.FC<Props> = ({ postState, postDispatch }) => {
   }, [emojisData])
 
   const debouncedSuggestions = useCallback(
-    debounce(
-      tag =>
-        (() => {
-          console.log(tag)
-          postDispatch({ type: 'overlay', payload: 'suggestions' })
-          postDispatch({ type: 'tag', payload: tag })
-        })(),
-      300
-    ),
+    debounce(tag => {
+      postDispatch({ type: 'overlay', payload: 'suggestions' })
+      postDispatch({ type: 'tag', payload: tag })
+    }, 500),
     []
   )
   let prevTags: PostState['tag'][] = []
@@ -87,7 +67,6 @@ const PostMain: React.FC<Props> = ({ postState, postDispatch }) => {
             newType = 'url'
             break
         }
-        // @ts-ignore
         tags.push({
           type: newType,
           text: props.getMatchedText(),
@@ -99,7 +78,18 @@ const PostMain: React.FC<Props> = ({ postState, postDispatch }) => {
 
     const changedTag = differenceWith(prevTags, tags, isEqual)
     // quick delete causes flicking of suggestion box
-    if (changedTag.length && tags.length && !disableDebounce) {
+    if (
+      changedTag.length > 0 &&
+      tags.length > 0 &&
+      content.length > 0 &&
+      !disableDebounce
+    ) {
+      console.log('changedTag length')
+      console.log(changedTag.length)
+      console.log('tags length')
+      console.log(tags.length)
+      console.log('changed Tag')
+      console.log(changedTag)
       if (changedTag[0]!.type !== 'url') {
         debouncedSuggestions(changedTag[0])
       }
@@ -147,92 +137,77 @@ const PostMain: React.FC<Props> = ({ postState, postDispatch }) => {
       }
     })
   }, [])
+
   return (
-    <SafeAreaView
-      style={styles.main}
-      edges={['left', 'right', 'bottom']}
-      onLayout={({ nativeEvent }) =>
-        postDispatch({
-          type: 'height',
-          payload: { view: nativeEvent.layout.height }
-        })
-      }
-    >
-      <View
-        style={{ height: postState.height.view - postState.height.keyboard }}
+    <View style={{ flex: 1 }}>
+      <TextInput
+        style={[
+          styles.textInput,
+          {
+            flex: postState.overlay ? 0 : 1,
+            minHeight: editorMinHeight + 14
+          }
+        ]}
+        autoCapitalize='none'
+        autoCorrect={false}
+        autoFocus
+        enablesReturnKeyAutomatically
+        multiline
+        placeholder='想说点什么'
+        onChangeText={content => onChangeText({ content })}
+        onContentSizeChange={({ nativeEvent }) => {
+          setEditorMinHeight(nativeEvent.contentSize.height)
+        }}
+        onSelectionChange={({
+          nativeEvent: {
+            selection: { start, end }
+          }
+        }) => {
+          postDispatch({ type: 'selection', payload: { start, end } })
+        }}
+        scrollEnabled
       >
-        <TextInput
-          style={[
-            styles.textInput,
-            {
-              flex: postState.overlay ? 0 : 1,
-              minHeight: postState.height.editor + 14
-            }
-          ]}
-          autoCapitalize='none'
-          autoCorrect={false}
-          autoFocus
-          enablesReturnKeyAutomatically
-          multiline
-          placeholder='想说点什么'
-          onChangeText={content => onChangeText({ content })}
-          onContentSizeChange={({ nativeEvent }) => {
-            postDispatch({
-              type: 'height',
-              payload: { editor: nativeEvent.contentSize.height }
-            })
-          }}
-          onSelectionChange={({
-            nativeEvent: {
-              selection: { start, end }
-            }
-          }) => {
-            postDispatch({ type: 'selection', payload: { start, end } })
-          }}
-          scrollEnabled
-        >
-          <Text>{postState.text.formatted}</Text>
-        </TextInput>
-        {postState.overlay === 'suggestions' ? (
-          <View style={[styles.suggestions]}>
-            <PostSuggestions
-              onChangeText={onChangeText}
-              postState={postState}
-              postDispatch={postDispatch}
-            />
-          </View>
-        ) : (
-          <></>
-        )}
-        {postState.overlay === 'emojis' ? (
-          <View style={[styles.emojis]}>
-            <PostEmojis
-              onChangeText={onChangeText}
-              postState={postState}
-              postDispatch={postDispatch}
-            />
-          </View>
-        ) : (
-          <></>
-        )}
-        <Pressable style={styles.additions} onPress={() => Keyboard.dismiss()}>
-          <Feather name='paperclip' size={24} />
-          <Feather name='bar-chart-2' size={24} />
-          <Feather name='eye-off' size={24} />
-          <Feather
-            name='smile'
-            size={24}
-            color={postState.emojis?.length ? 'black' : 'white'}
-            onPress={() => {
-              if (postState.emojis?.length && postState.overlay === null) {
-                postDispatch({ type: 'overlay', payload: 'emojis' })
-              }
-            }}
+        <Text>{postState.text.formatted}</Text>
+      </TextInput>
+      {postState.overlay === 'suggestions' ? (
+        <View style={[styles.suggestions]}>
+          <PostSuggestions
+            onChangeText={onChangeText}
+            postState={postState}
+            postDispatch={postDispatch}
           />
-          <Text>{postState.text.count}</Text>
-        </Pressable>
-      </View>
-    </SafeAreaView>
+        </View>
+      ) : (
+        <></>
+      )}
+      {postState.overlay === 'emojis' ? (
+        <View style={[styles.emojis]}>
+          <PostEmojis
+            onChangeText={onChangeText}
+            postState={postState}
+            postDispatch={postDispatch}
+          />
+        </View>
+      ) : (
+        <></>
+      )}
+      <Pressable style={styles.additions} onPress={() => Keyboard.dismiss()}>
+        <Feather name='paperclip' size={24} />
+        <Feather name='bar-chart-2' size={24} />
+        <Feather name='eye-off' size={24} />
+        <Feather
+          name='smile'
+          size={24}
+          color={postState.emojis?.length ? 'black' : 'white'}
+          onPress={() => {
+            if (postState.emojis?.length && postState.overlay === null) {
+              postDispatch({ type: 'overlay', payload: 'emojis' })
+            }
+          }}
+        />
+        <Text>{postState.text.count}</Text>
+      </Pressable>
+    </View>
   )
 }