Android Studio：如何将列表视图中的项目添加到列表视图 onClick

Posted 2023-05-07

【中文标题】Android Studio：如何将列表视图中的项目添加到列表视图 onClick

【英文标题】：Android Studio: How to add an item from listview1 to listview2 onClick

【发布时间】：2020-02-12 17:58:31

【问题描述】：

对 android Studio 非常陌生，正在尝试解决以下问题；我有 2 个列表视图，并希望“onClick”将 listView1 中的项目添加到 listView2。

单击（和添加）的项目必须从 ArrayList1 --> ArrayList2 存储。

我该怎么做？

布局的屏幕截图。 https://imgur.com/a/7nJ0uX9

我已尝试按照 youtube 教程解决此问题，但它们似乎没有明确涵盖我的问题。

public class SearchFilter extends AppCompatActivity 

    private static final String TAG = "SearchActivity";

    private ArrayAdapter adapter1;
    private ArrayAdapter adapter2;
    private ListView listView1;
    private ListView listView2;

    private String names1[] = new String[] "mitch", "luke", "samantha", "jessi", "janelle", "jordan", "rick";
    private String [] names2 = new String[names1.length];

    private List name1List = new ArrayList();
    private List name2List = new ArrayList();


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

        for(String a : names1)
            name1List.add(a);
        
        for (String b : names2)
            name2List.add(b);
        



        listView1 = (ListView) findViewById(R.id.listView1);
        listView2 = (ListView) findViewById(R.id.listView2);

        adapter1 =  new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, name1List);
        listView1.setAdapter(adapter1);

        adapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, name2List);
        listView2.setAdapter(adapter2);

        EditText theFilter = (EditText) findViewById(R.id.searchFilter);

        Log.d(TAG, "onCreate: Started");

        listView1.setOnItemClickListener(new AdapterView.OnItemClickListener() 
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) 
                name2List.add(name1List.get(position));
                adapter2.notifyDataSetChanged();
            
        );


        theFilter.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) 
                (SearchFilter.this).adapter1.getFilter().filter(charSequence);
            

            @Override
            public void afterTextChanged(Editable editable) 

            
        );



    

Logcat：

2019-10-16 06:16:38.843 29135-29191/? E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 06:48:39.276 29135-29191/? E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 07:52:39.608 29135-29191/? E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 10:00:39.972 29135-29191/? E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 10:00:41.539 536-536/? E/FirebaseInstanceId: Failed to start service while in background: java.lang.IllegalStateException: Not allowed to start service Intent  act=com.google.firebase.INSTANCE_ID_EVENT pkg=com.google.android.apps.messaging cmp=com.google.android.apps.messaging/.fcm.BugleFirebaseInstanceIDService (has extras) : app is in background uid UidRecord7000ddf u0a54 RCVR idle change:idle|uncached procs:1 seq(0,0,0)
2019-10-16 12:12:47.116 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 12:13:17.318 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: QUOTA_EXCEEDED
2019-10-16 12:14:17.534 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 12:16:17.706 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 12:20:36.753 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 12:28:44.679 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER
2019-10-16 12:45:19.843 3132-3205/com.google.android.youtube E/FirebaseInstanceId: Token retrieval failed: INVALID_SENDER

【问题讨论】：

使用界面进行项目点击并代替列表视图使用 Recyclerview 以获得最佳性能..

您的代码看起来不错。该错误与 Firebase 有关。

谢谢。你知道我该如何修改 firebase 问题吗？

【参考方案1】：

这可能会有所帮助。 notifyDataSetChanged() 不足以刷新 ListView 数据，必须先调用 setAdapter() 才能正确加载信息。执行以下操作：-

  listView.setAdapter(adapter);
  adapter.notifyDataSetChanged();