Android：具有多个可点击按钮的 ListView 元素

Question

提问by znq

I've a ListViewwhere every element in the list contains a TextView and two different Buttons. Something like this:

我有一个ListView列表中的每个元素都包含一个 TextView 和两个不同的按钮。像这样的东西：

ListView
--------------------
[Text]
[Button 1][Button 2]
--------------------
[Text]
[Button 1][Button 2]
--------------------
... (and so on) ...

With this code I can create an OnItemClickListenerfor the whole item:

使用此代码，我可以OnItemClickListener为整个项目创建一个：

listView.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> list, View view, int position, long id) {
        Log.i(TAG, "onListItemClick: " + position);

        }

    }
});

However, I don't want the whole item to be clickable, but only the two buttons of each list element.

但是，我不希望整个项目都可以点击，而只希望每个列表元素的两个按钮都可以点击。

So my question is, how do I implement a onClickListener for these two buttons with the following parameters:

所以我的问题是，如何使用以下参数为这两个按钮实现 onClickListener ：

int button(which button of the element has been clicked)
int position(which is the element in the list on which the button click happened)

int button（元素的哪个按钮被点击了）
int position（这是列表中发生按钮单击的元素）

Update:I found a solution as described in my answer below. Now I can click/tap the button via the touch screen. However, I can't manually select it with the trackball. It always selects the whole list item and from there goes directly to the next list item ignoring the buttons, even though I set .setFocusable(true)and setClickable(true)for the buttons in getView().

更新：我找到了以下答案中所述的解决方案。现在我可以通过触摸屏点击/点击按钮。但是，我无法使用轨迹球手动选择它。它总是选择整个列表项，并从那里直接进入下一个表项忽略的按钮，即使我设置.setFocusable(true)和setClickable(true)在按钮getView()。

I also added this code to my custom list adapter:

我还将此代码添加到我的自定义列表适配器中：

@Override
public boolean  areAllItemsEnabled() {
    return false;           
}

@Override
public boolean isEnabled(int position) {
        return false;
}

This causes that no list item is selectable at all any more. But it didn't help in making the nested buttons selectable.

这会导致不再有任何列表项可供选择。但它没有帮助使嵌套按钮可选。

Anyone an idea?

任何人的想法？

Answer 1

采纳答案by znq

The solution to this is actually easier than I thought. You can simply add in your custom adapter's getView()method a setOnClickListener() for the buttons you're using.

解决这个问题实际上比我想象的要容易。您可以简单地在您的自定义适配器的getView()方法中为您正在使用的按钮添加一个 setOnClickListener()。

Any data associated with the button has to be added with myButton.setTag()in the getView()and can be accessed in the onClickListener via view.getTag()

与按钮关联的任何数据都必须添加到myButton.setTag()中，getView()并且可以通过 onClickListener 访问view.getTag()

I posted a detailed solution on my blogas a tutorial.

我在我的博客上发布了一个详细的解决方案作为教程。

Answer 2

回答by greg7gkb

This is sort of an appendage @znq's answer...

这是一种附属@znq的回答......

There are many cases where you want to know the row position for a clicked item AND you want to know which view in the row was tapped. This is going to be a lot more important in tablet UIs.

在很多情况下，您想知道被点击项目的行位置，并且您想知道行中的哪个视图被点击。这在平板电脑用户界面中将变得更加重要。

You can do this with the following custom adapter:

您可以使用以下自定义适配器执行此操作：

private static class CustomCursorAdapter extends CursorAdapter {

    protected ListView mListView;

    protected static class RowViewHolder {
        public TextView mTitle;
        public TextView mText;
    }

    public CustomCursorAdapter(Activity activity) {
        super();
        mListView = activity.getListView();
    }

    @Override
    public void bindView(View view, Context context, Cursor cursor) {
        // do what you need to do
    }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        View view = View.inflate(context, R.layout.row_layout, null);

        RowViewHolder holder = new RowViewHolder();
        holder.mTitle = (TextView) view.findViewById(R.id.Title);
        holder.mText = (TextView) view.findViewById(R.id.Text);

        holder.mTitle.setOnClickListener(mOnTitleClickListener);
        holder.mText.setOnClickListener(mOnTextClickListener);

        view.setTag(holder);

        return view;
    }

    private OnClickListener mOnTitleClickListener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            final int position = mListView.getPositionForView((View) v.getParent());
            Log.v(TAG, "Title clicked, row %d", position);
        }
    };

    private OnClickListener mOnTextClickListener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            final int position = mListView.getPositionForView((View) v.getParent());
            Log.v(TAG, "Text clicked, row %d", position);
        }
    };
}

Answer 3

回答by Fabricio PH

For future readers:

对于未来的读者：

To select manually the buttons with the trackball use:

要使用轨迹球手动选择按钮，请使用：

myListView.setItemsCanFocus(true);

And to disable the focus on the whole list items:

并禁用对整个列表项的关注：

myListView.setFocusable(false);
myListView.setFocusableInTouchMode(false);
myListView.setClickable(false);

It works fine for me, I can click on buttons with touchscreen and also alows focus an click using keypad

它对我来说很好用，我可以用触摸屏点击按钮，也可以使用键盘聚焦点击

Answer 4

回答by Bhavin Chauhan

I don't have much experience than above users but I faced this same issue and I Solved this with below Solution

我没有比上述用户更多的经验，但我遇到了同样的问题，我用下面的解决方案解决了这个问题

<Button
        android:id="@+id/btnRemove"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@+id/btnEdit"
        android:layout_weight="1"
        android:background="@drawable/btn"
        android:text="@string/remove" 
        android:onClick="btnRemoveClick"
        />

btnRemoveClick Click event

btnRemoveClick 单击事件

public void btnRemoveClick(View v)
{
    final int position = listviewItem.getPositionForView((View) v.getParent()); 
    listItem.remove(position);
    ItemAdapter.notifyDataSetChanged();

}

Answer 5

回答by Rafal

Probably you've found how to do it, but you can call

可能你已经找到了怎么做，但你可以打电话

ListView.setItemsCanFocus(true)

and now your buttons will catch focus

现在你的按钮会吸引焦点

Answer 6

回答by mFontolan

I am not sure about be the best way, but works fine and all code stays in your ArrayAdapter.

我不确定是不是最好的方法，但工作正常并且所有代码都保留在您的 ArrayAdapter 中。

package br.com.fontolan.pessoas.arrayadapter;

import java.util.List;

import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import br.com.fontolan.pessoas.R;
import br.com.fontolan.pessoas.model.Telefone;

public class TelefoneArrayAdapter extends ArrayAdapter<Telefone> {

private TelefoneArrayAdapter telefoneArrayAdapter = null;
private Context context;
private EditText tipoEditText = null;
private EditText telefoneEditText = null;
private ImageView deleteImageView = null;

public TelefoneArrayAdapter(Context context, List<Telefone> values) {
    super(context, R.layout.telefone_form, values);
    this.telefoneArrayAdapter = this;
    this.context = context;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.telefone_form, parent, false);

    tipoEditText = (EditText) view.findViewById(R.id.telefone_form_tipo);
    telefoneEditText = (EditText) view.findViewById(R.id.telefone_form_telefone);
    deleteImageView = (ImageView) view.findViewById(R.id.telefone_form_delete_image);

    final int i = position;
    final Telefone telefone = this.getItem(position);
    tipoEditText.setText(telefone.getTipo());
    telefoneEditText.setText(telefone.getTelefone());

    TextWatcher tipoTextWatcher = new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
            telefoneArrayAdapter.getItem(i).setTipo(s.toString());
            telefoneArrayAdapter.getItem(i).setIsDirty(true);
        }
    };

    TextWatcher telefoneTextWatcher = new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
            telefoneArrayAdapter.getItem(i).setTelefone(s.toString());
            telefoneArrayAdapter.getItem(i).setIsDirty(true);
        }
    };

    tipoEditText.addTextChangedListener(tipoTextWatcher);
    telefoneEditText.addTextChangedListener(telefoneTextWatcher);

    deleteImageView.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            telefoneArrayAdapter.remove(telefone);
        }
    });

    return view;
}

}

Answer 7

回答by Manohar Reddy

I Know it's late but this may help, this is an example how I write custom adapter class for different click actions

我知道已经晚了，但这可能会有所帮助，这是我如何为不同的单击操作编写自定义适配器类的示例

 public class CustomAdapter extends BaseAdapter {

    TextView title;
  Button button1,button2;

    public long getItemId(int position) {
        return position;
    }

    public int getCount() {
        return mAlBasicItemsnav.size();  // size of your list array
    }

    public Object getItem(int position) {
        return position;
    }

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

        if (convertView == null) {
            convertView = getLayoutInflater().inflate(R.layout.listnavsub_layout, null, false); // use sublayout which you want to inflate in your each list item
        }

        title = (TextView) convertView.findViewById(R.id.textViewnav); // see you have to find id by using convertView.findViewById 
        title.setText(mAlBasicItemsnav.get(position));
      button1=(Button) convertView.findViewById(R.id.button1);
      button1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //your click action 

           // if you have different click action at different positions then
            if(position==0)
              {
                       //click action of 1st list item on button click
        }
           if(position==1)
              {
                       //click action of 2st list item on button click
        }
    });

 // similarly for button 2

   button2=(Button) convertView.findViewById(R.id.button2);
      button2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //your click action 

    });



        return convertView;
    }
}

Answer 8

回答by Gusdor

Isn't the platform solution for this implementation to use a context menu that shows on a long press?

此实现的平台解决方案不是使用长按时显示的上下文菜单吗？

Is the question author aware of context menus? Stacking up buttons in a listview has performance implications, will clutter your UI and violate the recommended UI design for the platform.

问题作者是否知道上下文菜单？在列表视图中堆叠按钮会影响性能，会使您的 UI 变得混乱并违反平台推荐的 UI 设计。

On the flipside; context menus - by nature of not having a passive representation - are not obvious to the end user. Consider documenting the behaviour?

另一方面; 上下文菜单——本质上没有被动表示——对最终用户来说并不明显。考虑记录行为？

This guide should give you a good start.

本指南应该为您提供一个良好的开端。

http://www.mikeplate.com/2010/01/21/show-a-context-menu-for-long-clicks-in-an-android-listview/

Android：具有多个可点击按钮的 ListView 元素

提问by znq

采纳答案by znq

回答by greg7gkb

回答by Fabricio PH

回答by Bhavin Chauhan

回答by Rafal

回答by mFontolan

回答by Manohar Reddy

回答by Gusdor

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标签

Android：具有多个可点击按钮的 ListView 元素

提问by znq

采纳答案by znq

回答by greg7gkb

回答by Fabricio PH

回答by Bhavin Chauhan

回答by Rafal

回答by mFontolan

回答by Manohar Reddy

回答by Gusdor

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