如何使搜索活动在每个字符输入时都命中 API - AndroidX

Posted 2023-04-14

【中文标题】如何使搜索活动在每个字符输入时都命中 API - AndroidX

【英文标题】：How to make Search Activity to hit API every character input - AndroidX

【发布时间】：2020-03-15 22:07:15

【问题描述】：

我想制作类似于每次输入字符时都可以访问 API 的 Activity

SearchActivity.java

public class SearchActivity extends AppCompatActivity 

@Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search);

    Intent intent = getIntent();
    handleIntent(intent);




// Handles the intent that carries user's choice in the Search Interface
private void handleIntent(Intent intent) 
    if (Intent.ACTION_SEARCH.equals(intent.getAction())) 
        String query = intent.getStringExtra(SearchManager.QUERY);

        Log.i("Main", "Received query: " + query);
     else if (Intent.ACTION_VIEW.equals(intent.getAction())) 
        Bundle bundle = this.getIntent().getExtras();

        assert (bundle != null);

        if (bundle != null) 

        
    


// Menu callbacks ______________________________________________________________________________
@Override
public boolean onCreateOptionsMenu(Menu menu) 
    getMenuInflater().inflate(R.menu.menu_searchactivity, menu);

    return true;


@Override
public boolean onOptionsItemSelected(MenuItem item) 
    int id = item.getItemId();

    if (id == R.id.action_settings) 
        return true;
    

    if (id == R.id.action_search) 
        // Calls Custom Searchable Activity
        Intent intent = new Intent(this, SearchActivity.class);
        startActivity(intent);

        return true;
    

    return super.onOptionsItemSelected(item);

activity_search.xml

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

    android:layout_
    android:layout_

    android:layout_gravity="center_vertical"

    android:focusable="true"
    android:clickable="true"
    android:background="?android:attr/selectableItemBackground">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/RecyclerView_SearchView"
        android:layout_
        android:layout_/>
</RelativeLayout>

menu_searchactivity.xml > 工具栏菜单

<menu
    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"
    tools:context="edsilfer.com.br.edsilfer.Main">

    <item
        android:id="@+id/action_settings"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="asdasdasdasd"

        tools:ignore="AppCompatResource" />

    <item
        android:id="@+id/action_search"
        android:orderInCategory="200"
        android:title="Search"
        android:icon="@drawable/search"
        app:showAsAction="ifRoom"/>
</menu>

我不确定如何进行这样的工具栏设计 你的经验对我有很大帮助 ..................................................... .............................................

【参考方案1】：

youreditext.addTextChangedListener(new TextWatcher() 
        @Override
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) 

        

        @Override
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) 
                // your logic
        

        @Override
        public void afterTextChanged(Editable editable) 



        
    );

【参考方案2】：

正如您的问题所描述的，Text watcher 会帮助您。

在 afterTextChange 中实现调用 API 是个好办法。