java - relativeLayout 无法转换为 android.text.TextWatcher

Question

我正在尝试自动完成，包括能够按下我从来自 firebase 数据的列表中搜索的选项

<小时/>

RelativeLayout 无法转换为 android.text.TextWatcher - 这是我的错误

public void autoSearch(View view) {
        //auto search complete for comunity list
        this.context = context;

        String array1[] = firebaseComunityListArr.toArray(new String[firebaseComunityListArr.size()]);
        AutoCompleteTextView txt = (AutoCompleteTextView) view.findViewById(R.id.myAutoComplete);
        txt.addTextChangedListener((TextWatcher) getView());
        txt.setAdapter(new ArrayAdapter<String>(getContext(), android.R.layout.simple_dropdown_item_1line, array1));
        txt.setTextColor(Color.GREEN);
        txt.setAdapter(adapter);
    }


   @Override
    public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void afterTextChanged(Editable editable) {

    }

这是 xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <AutoCompleteTextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textAutoComplete|textAutoCorrect"
        android:imeOptions="actionSearch"
        android:hint="search here"
        android:id="@+id/myAutoComplete"/>

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/my_recycler_view"
        />



</RelativeLayout >

Answer 1

据我了解，您需要像这样实现 TextWatcher

txt.addTextChangedListener(new TextWatcher() {

   @Override
   public void afterTextChanged(Editable s) {}

   @Override    
   public void beforeTextChanged(CharSequence s, int start,
     int count, int after) {
   }

   @Override    
   public void onTextChanged(CharSequence s, int start,
     int before, int count) {

   }
  });

因为您已经实现了 textWatcher

改变这个

txt.addTextChangedListener((TextWatcher) getView()); 

至

txt.addTextChangedListener(this); 

已更新

将 layout_below 属性添加到您的 recyclerview

<android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/my_recycler_view"
        android:layout_below="@+id/myAutoComplete"/>