Question

在我的活动中，我有一个列表视图和一个按钮。每个都有不同的目的。

我的列表视图显示了另一项活动中的项目详细信息。

我的按钮打开另一项活动。

这里listview没有任何问题。但我的按钮不起作用。

在我的代码中，我使用了以下示例列表视图和按钮

    public class MainActivity extends AppCompatActivity implements ListView.OnItemClickListener{

   private Button buttonaddticket;

    private ListView listView;
     @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.MainActivity );

            listView = (ListView) findViewById(R.id.srListView);

            listView.setOnItemClickListener(this);

            buttonaddticket = (Button) findViewById(R.id.btnaddticket);

            //Setting listeners to button
            buttonaddticket.setOnClickListener((View.OnClickListener) this);

        }
        .
        .
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Intent intent = new Intent(this, SingleTicket.class);
        .
        }


    public void onClick(View v) {
        if(v == buttonaddticket){
        .
        .
        }
    }
        }

问题是如何在我的按钮的同一活动中实现onClickListener？

Answer 1

您可以为Listener

实施多个Activity

public class MainActivity extends AppCompatActivity implements ListView.OnItemClickListener,View.OnClickListener{

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
         // handle listview on item click
    }

    @Override
    public void onClick(View view){
         switch (view.getId()){
                    //handle multiple view click events
         }
    }

}

Answer 2

您需要做的是获取对按钮的引用并使用“View.OnClickListener”界面以获得要注册的单击。为了确保按钮注册了点击，它需要将其监听器设置为“this”活动。与您的按钮相比，这样您的列表就可以单独获取点击次数。

public class MainActivity extends AppCompatActivity implements ListView.OnItemClickListener, View.OnClickListener {

  private Button yourButton;
  private ListView listView;

  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.MainActivity);

      yourButton = (Button) findViewById(/* Your button id */);
      yourButton.setOnClickListener(this);

      listView = (ListView) findViewById(/* Your list id */);
      listView.setOnItemClickListener(this);
  }

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
     // handle listview item click here
  }

  @Override
  public void onClick(View view){
       //Handle button click here
  }
}

Answer 3

试试这个!!!

public class MainActivity extends AppCompatActivity implements ListView.OnItemClickListener, View.OnClickListener {

 private Button buttonaddticket;
 private ListView listView;

 @Override
  public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.MainActivity);

   buttonaddticket = (Button) findViewById(R.id.btnaddticket);
   buttonaddticket.setOnClickListener(this);

   listView = (ListView) findViewById(R.id.srListView);

  listView.setOnItemClickListener(this);
 }

@Override
 public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 // handle listview item click here
}

 @Override
 public void onClick(View view){
   switch(view.getId()){
   case R.id.btnaddticket:

   // Enter Code here     
   break;

   }
 }
}

如何在listview外面设置一个按钮

3 个答案: