我如何添加一个setOnClickListener到我的ListView Android

我是新的堆栈溢出，我读了这个线程（ListView with Add and Delete Buttons in each Row in android），我在我的代码中实现了答案（https://stackoverflow.com/a/23021960/7262380）。一切正常。但现在我想要的是，如果我点击列表视图项目，发生什么事情我必须做什么？我如何添加一个setOnClickListener到我的ListView Android

我的实际代码（名单适配器）

package de.control; 

import android.content.Context; 
import android.content.Intent; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.ListAdapter; 
import android.widget.TextView; 

import java.util.ArrayList; 

public class listAdapter extends BaseAdapter implements ListAdapter { 

    //Create Variables 

    private ArrayList<String> list = new ArrayList<String>(); 
    private ArrayList<Sort> aktuelleObjektListe = new ArrayList<>(); 
    private Context context; 
    public static DBHelper dataSource; 
    TextView quantity = null; 
    public static final String LOG_TAG = listAdapter.class.getSimpleName(); 

    //Finished 

    //Create ListAdapter 

    public listAdapter(ArrayList<String> list, Context context) { 
     this.list = list; 
     this.context = context; 
     dataSource = new DBHelper(context); 
     dataSource.open(); 
     aktuelleObjektListe = dataSource.getAllSorts(); 
     dataSource.close(); 
    } 

    //Finished 

    //Unused but required 

    @Override 
    public int getCount() { 
     return list.size(); 
    } 

    @Override 
    public Object getItem(int pos) { 
     return list.get(pos); 
    } 

    @Override 
    public long getItemId(int pos) { 
     return 0; 
     //just return 0 if your list items do not have an Id variable. 
    } 

    //Finished 

    //Update ListView (is Called by "adapter.notifyDataSetChanged();") 

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 

     View view = convertView; 
     if (view == null) { 
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      view = inflater.inflate(R.layout.listlayout, null); 

     } 

     TextView listItemText = (TextView)view.findViewById(R.id.list_item_string); 
     listItemText.setText(list.get(position)); 

     quantity = (TextView)view.findViewById(R.id.quantity_double); 
     quantity.setText(Integer.toString( aktuelleObjektListe.get(position).getQuantity() )); 

    //Finished 

     //Handle ADD and DELETE Button 

     Button add1toSort = (Button)view.findViewById(R.id.add1toSort); 
     Button remove1fromSort = (Button)view.findViewById(R.id.remove1fromSort); 

    add1toSort.setOnClickListener(new View.OnClickListener(){ 
     @Override 
     public void onClick(View v) { 

      dataSource.open(); 

      Sort sort = dataSource.getAllSorts().get(position); 

      dataSource.updateSortInDB(sort.getId(), sort.getSort(), (sort.getQuantity() + 1)); 

      aktuelleObjektListe = dataSource.getAllSorts(); 

      dataSource.close(); 

      notifyDataSetChanged(); 
     } 
    }); 

    remove1fromSort.setOnClickListener(new View.OnClickListener(){ 
     @Override 
     public void onClick(View v) { 

      dataSource.open(); 

      Sort sort = dataSource.getAllSorts().get(position); 

      dataSource.updateSortInDB(sort.getId(), sort.getSort(), (sort.getQuantity() - 1)); 

      aktuelleObjektListe = dataSource.getAllSorts(); 

      dataSource.close(); 

      notifyDataSetChanged(); 
     } 
    }); 

    //Finished 
    return view; 
} 

}

我的实际代码（MainActivity）

package de.control; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.ListView; 

import java.util.ArrayList; 

public class overview extends AppCompatActivity { 

    //Create Variable 

    public static DBHelper dataSource; 
    public static final String LOG_TAG = overview.class.getSimpleName(); 
    public static final String tmp = "Test"; 

    ListView possessionList; 
    Button addSort; 

    listAdapter adapter; 
    public ArrayList<String> listItems; 
    public static ArrayList<Sort> Objects; 

    //Finished 

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

     // Create ListView (ID: possessionList) 

     dataSource = new DBHelper(this); 
     dataSource.open(); 
     Objects = dataSource.getAllSorts(); 

     possessionList = (ListView)findViewById(R.id.overview_possessionList); 
     listItems = new ArrayList<String>(); 

     adapter = new listAdapter(listItems, this); 
     possessionList.setAdapter(adapter); 

     Log.d(LOG_TAG, "Die Datenquelle wird geöffnet."); 

     Log.d(LOG_TAG, "ListView wird Aktuelisiert"); 
     updateList(); 

     Log.d(LOG_TAG, "Die Datenquelle wird geschlossen."); 
     dataSource.close(); 

     //Finished 

     // Handle what happend by Pressing a List Item (DOESENT WORK) 

     possessionList.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 

       Log.d(LOG_TAG, "Test"); 
      } 
     }); 

     //Finished 

     // Switch Label on Button (ID: addSort) 

     addSort = (Button)findViewById(R.id.overview_completeAddition); 
     final Intent addIntent = new Intent(overview.this,addsort.class); 

     addSort.setOnClickListener(new View.OnClickListener() 
     { 
      @Override 
      public void onClick(View view) 
      { 
       startActivity(addIntent); 
      } 
     }); 

     //Finished 
    } 

    // Add all Objekts to the ListView 

    public boolean updateList() 
    { 
     try { 
      listItems.clear(); 

      Objects = dataSource.getAllSorts(); 

      for (int i = 0; i < Objects.size(); i++) { 
       listItems.add(Objects.get(i).getSort()); 
      } 

      adapter.notifyDataSetChanged(); 

      return true; 
     } 
     catch (Exception ex){ 
      return false; 
     } 
    } 

    //Finished 

    //Add the Menü 

    @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); 
    } 

    //Finished 

}

来源

2017-07-25 xBarkeeper

你想要点击listView中的行而不是它中的按钮吗？ –

https://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html –

@Sarthak Mittal是的，但我必须执行它 – xBarkeeper

尝试将android:focusable="false"添加到您的文本视图和按钮中的和在列表布局的父布局中添加此行android:descendantFocusability="blocksDescendants"。

来源

2017-07-25 10:10:16 MinnuKaAnae

我怎么能一个setOnClickListener添加到我的ListView的Android

你应该执行setOnItemClickListener您possessionList listView

possessionList.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     // your code 
    } 
});

另一个方法是在LinearLayout或RelativeLayout被添加android:descendantFocusability="blocksDescendants"，内部没有 ListView的元素。

例

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
      ..... 
    android:descendantFocusability="blocksDescendants" 
    tools:context="de.control.overview">

来源

2017-07-25 09:07:16

它不起作用 – xBarkeeper

请更新您的帖子，然后 –

在'overview.xml'中放置'LinearLayout'或'RelativeLayout'中的android：descendantFocusability =“blocksDescendants”'。 –

possessionList.setOnItemClickListener(new OnItemClickListener() { 

    @Override 
    public void onItemClick(AdapterView<?> parent, View view, 
      int position, long id) { 

     Log.i("Hello!", "Y u no see me?"); 

    } 
});

从ListView with OnItemClickListener android

来源

2017-07-25 09:10:29

我尝试它，但“你好！”，“你不见我？”不在我的控制台 – xBarkeeper

这将是更好地为你使用recyclerview，而不是listView。

// Item Click Listener for the listview 
OnItemClickListener itemClickListener = new OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View container, int 
            position, long id) { 
       // Getting the Container Layout of the ListView 
       LinearLayout linearLayoutParent = (LinearLayout) container; 

       // Getting the inner Linear Layout 
       LinearLayout linearLayoutChild = (LinearLayout) 
       linearLayoutParent.getChildAt(1); 

       // Getting the Country TextView 
       TextView tvCountry = (TextView) linearLayoutChild.getChildAt(0); 

       Toast.makeText(getBaseContext(), tvCountry.getText().toString(), 
       Toast.LENGTH_SHORT).show(); 
      } 
     }; 

     // Setting the item click listener for the listview 
     listView.setOnItemClickListener(itemClickListener);

来源

2017-07-25 09:19:31

我必须在我的MainActivity类中实现这个吗？使用ListView引用listview之后的 – xBarkeeper

listView = findViewById（R.id.listView）; –

例如，如果我有这样的列表视图：

ListView mListView = (ListView) mLayout.findViewById(R.id.my_list_view);

您可以在列表视图中的事件在每个项目上使用setOnItemClickListener用于点击：与

mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { 
     //Do what you want to each item here 
    } 
});

来源

2017-07-25 09:20:26 BlakeR

我如何添加一个setOnClickListener到我的ListView Android

回答

相关问题