Android使用Spinner和MultiAutoCompleteTextView自动填充列表项目

Question

1. 我是新来的Android尝试一个小应用程序。
2. 我有一个微调项目列表，我有MultiAutoCompleteTextView。
3. 当我从微调选择任何一个项目，然后它应该显示相关的项目。例如，如果我选择品牌，它应该允许与品牌相关的MultiAutoCompleteTextView中的项目（阿迪达斯，李，彪马）。
4. 如果我选择颜色（蓝色，黑色，黄色，绿色）就像那样。
5. 这里是我的活动......

---

package com.example.ns2.testing; 

import android.os.Bundle; 
import android.support.design.widget.FloatingActionButton; 
import android.support.design.widget.Snackbar; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.Toolbar; 
import android.view.View; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.MultiAutoCompleteTextView; 
import android.widget.Spinner; 

public class MainActivity extends AppCompatActivity { 
    String[] color={"Blue","Black","Red","Yellow","Green","Pink","Sony","LG","Samsung"}; 

    MultiAutoCompleteTextView text1; 
    Spinner spinner; 
    ArrayAdapter<CharSequence> adapter; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     text1= (MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView1); 
     ArrayAdapter listAdapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1, color); 
     text1.setAdapter(listAdapter); 
     text1.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer()); 

     spinner = (Spinner) findViewById(R.id.spinner); 
     adapter = ArrayAdapter.createFromResource(this, R.array.SearchKey, android.R.layout.simple_spinner_item); 
     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     spinner.setAdapter(adapter); 
     spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
      @Override 
      public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { 



      } 

      @Override 
      public void onNothingSelected(AdapterView<?> parent) { 

      } 






    /* @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    }*/ 

    /*@Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    }*/ 
     }); 
    } 
} 

---

1. 这是我的布局......

<?xml version="1.0" encoding="utf-8"?> 
 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
 
    xmlns:tools="http://schemas.android.com/tools" 
 
    android:layout_width="wrap_content" 
 
    android:layout_height="wrap_content" 
 
    android:paddingBottom="@dimen/activity_vertical_margin" 
 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
 
    android:paddingRight="@dimen/activity_horizontal_margin" 
 
    android:paddingTop="@dimen/activity_vertical_margin" 
 
    app:layout_behavior="@string/appbar_scrolling_view_behavior" 
 
    tools:context="com.example.ns2.testing.MainActivity" 
 
    tools:showIn="@layout/activity_main"> 
 

 
    <TextView 
 
     android:id="@+id/like" 
 
     android:layout_width="wrap_content" 
 
     android:layout_height="wrap_content" 
 
     android:text="@string/like" 
 
     android:textSize="@dimen/abc_action_bar_progress_bar_size" 
 
     android:layout_alignParentLeft="true" 
 
     /> 
 
    <Spinner 
 
     android:id="@+id/spinner" 
 
     android:layout_width="wrap_content" 
 
     android:layout_height="wrap_content" 
 
     android:layout_below="@+id/like" 
 
     android:layout_alignParentRight="true" 
 
     android:layout_alignParentEnd="true" 
 
     android:layout_marginRight="70dp" 
 
     android:layout_marginEnd="200dp"> 
 
    </Spinner> 
 
    <MultiAutoCompleteTextView 
 
     android:id="@+id/multiAutoCompleteTextView1" 
 
     android:layout_width="200dp" 
 
     android:layout_height="wrap_content" 
 
     android:ems="10" 
 
     android:hint="Value.... " 
 
     android:layout_alignTop="@+id/spinner" 
 
     android:layout_alignParentRight="true" 
 
     android:layout_alignParentEnd="true" /> 
 

 
</RelativeLayout>

1. 谁能帮我解决这个...
2. 感谢他们.....

Answer 1

用途：spinner.setOnItemSelectedListener

我已经创建类别和子类别微调。子类别值是基于类别选择显示的。以下是代码示例：

spn_category.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
        @Override 
        public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) { 
         String selection = spn_category.getSelectedItem().toString(); 

        // Based on this selection category, you can select which subcategory to show 

        ArrayAdapter<String> selection_subcat = new ArrayAdapter<String>(ServiceProviderProfileEdit.this, 
          android.R.layout.simple_spinner_dropdown_item, CategoryInfo.getSubCategories(selection)); 
        spn_subcategory.setAdapter(selection_subcat); 
        } 

        @Override 
        public void onNothingSelected(AdapterView<?> parentView) { 
         // your code here (optional) 
        } 

       }); 

希望它能帮助你..！