Case study of AutoCompleteTextView auto-filling in Android learning notes

Case study of AutoCompleteTextView auto-filling in Android learning notes

 

(1) There are two methods to implement the AutoCompleteTextView function: one is manually configured, another summary is the data made through the xml file (of course, it can also be obtained through online resources)

Here we only talk about the first two types!

(2) The layout Page code is the same as below:

 

(2) The first is to manually configure the list Data source:

 

Package com. example. autocompletetextview; public class MainActivity extends Activity {private AutoCompleteTextView autoCompleteTextView1; private ArrayAdapter
 
  
Adapter; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); autoCompleteTextView1 = (AutoCompleteTextView) this. findViewById (R. id. autoCompleteTextView1);/** 1. manually list array adapter */adapter = new ArrayAdapter
  
   
(This, android. R. layout. simple_list_item_1, getDataSource (); autoCompleteTextView1.setAdapter (adapter);}/** 1. manually set a list array as the data source */public List
   
    
GetDataSource () {List
    
     
List = new ArrayList
     
      
(); List. add (beijing); list. add (beida); list. add (beiren); list. add (shanghai); list. add (shangzhou); list. add (guangzhou); list. add (dancheng); list. add (ningping); list. add (zhoukou); list. add (chengdu); list. add (heze); list. add (zhumadian); list. add (luoyang); list. add (shuanglou); list. add (yizhong); list. add (xindu); return list;} @ Overridepublic boolean onCreateOptionsMenu (Menu menu) {getMenuInflater (). inflate (R. menu. main, menu); return true ;}}
     
    
   
  
 

 

 

(4) The second type is the data source created through the xml file.

Name: Add the following configuration under the/values/strings file.

 

 
     
  
   AutoCompleteTextView 
      
  
   Settings
      
  
   Hello world!
      
          
   
    Afghanistan
           
   
    Albania
           
   
    Algeria
           
   
    American Samoa
           
   
    Andorra
           
   
    Angola
           
   
    Anguilla
           
   
    Antarctica
           
   
    Bfghanistan
           
   
    Blbania
           
   
    Blgeria
           
   
    Bmerican Samoa
           
   
    Bndorra
           
   
    Bngola
           
   
    Bnguilla
           
   
    Bntarctica
       
  
 

Then the class is:

 

 

Package com. example. autocompletetextview; public class MainActivity extends Activity {private AutoCompleteTextView autoCompleteTextView1; private ArrayAdapter
 
  
Adapter; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); autoCompleteTextView1 = (AutoCompleteTextView) this. findViewById (R. id. autoCompleteTextView1);/** 2. use the xml file to configure the data source */String [] countries = getResources () in the adapter (). getStringArray (R. array. countries_array); adapter = new ArrayAdapter
  
   
(This, android. r. layout. simple_list_item_1, countries); autoCompleteTextView1.setAdapter (adapter);} @ Overridepublic boolean onCreateOptionsMenu (Menu menu) {getMenuInflater (). inflate (R. menu. main, menu); return true ;}}
  
 

 

 

The running result is as follows: