Question

我想点击ListView项目内的按钮，点击整个项目应该具有相同的效果。但是，当我点击按钮时没有任何反应，当我点击图像时所有的Okey。怎么解决？我尝试按下按钮：机器人：可聚焦=“真” 机器人：可点击=“真” 我还尝试了android：descendantFocusability。

我的尝试都没有让按钮可以点击。

my_item.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:descendantFocusability="blocksDescendants"
>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/button"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:focusable="false"
    android:focusableInTouchMode="false"
    android:layout_toLeftOf="@+id/imageArrow"
    android:layout_toStartOf="@+id/imageArrow"
    />

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/imageArrow"
    android:layout_alignTop="@+id/button"
    android:focusable="false"
    android:focusableInTouchMode="false"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:background="@drawable/r_arr" />
</RelativeLayout>

MainActivity.java

 public class MainActivity extends ListActivity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
//    setContentView(R.layout.activity_main);
   ListView listView = (ListView)findViewById(R.id.listView);
    String[] values = new String[] { "Android", "iPhone", "WindowsMobile",
            "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X",
            "Linux", "OS/2" };
    MyCustomAdapter adapter = new MyCustomAdapter(this, values);
    setListAdapter(adapter);
    }

@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);
}

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);
    String item = (String) getListAdapter().getItem(position);
    Toast.makeText(this, item + " selected", Toast.LENGTH_SHORT).show();
}
}

MyCustomAdapter.java

public class MyCustomAdapter extends ArrayAdapter<String> {
private final Activity context;
private final String[] names;

static class ViewHolder {
    public TextView myButton;
    public ImageView image;
}

public MyCustomAdapter(Activity context, String[] names) {
    super(context, R.layout.my_item, names);
    this.context = context;
    this.names = names;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View rowView = convertView;
    // reuse views
    if (rowView == null) {
        LayoutInflater inflater = context.getLayoutInflater();
        rowView = inflater.inflate(R.layout.my_item, null);
        // configure view holder
        ViewHolder viewHolder = new ViewHolder();
        viewHolder.myButton = (Button)rowView.findViewById(R.id.button);
        viewHolder.image = (ImageView)         rowView.findViewById(R.id.imageArrow);
        viewHolder.myButton.setFocusable(false);

        rowView.setTag(viewHolder);

    }

    // fill data
    ViewHolder holder = (ViewHolder) rowView.getTag();
    String s = names[position];
    String abs=Integer.toString(position + 1);
    holder.myButton.setText(s+ " number " + abs);


    holder.image.setImageResource(R.drawable.r_arr);
    return rowView;
}
}

Answer 1

你只需要配置像这样的onClick方法：

findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //your code goes here
            }
        });

Answer 2

请在按钮上写上onclicklistener。

Answer 3

在getView中放置按钮单击侦听器

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View rowView = convertView;
    // reuse views
    if (rowView == null) {
        LayoutInflater inflater = context.getLayoutInflater();
        rowView = inflater.inflate(R.layout.my_item, null);

        // configure view holder
        ViewHolder viewHolder = new ViewHolder();
        viewHolder.myButton = (Button) rowView.findViewById(R.id.button);
        viewHolder.image = (ImageView) rowView.findViewById(R.id.imageArrow);          
        viewHolder.myButton.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // Button click functionalty here   
            });

        rowView.setTag(viewHolder);

    }

    // fill data
    ViewHolder holder = (ViewHolder) rowView.getTag();
    String s = names[position];
    String abs=Integer.toString(position + 1);
    holder.myButton.setText(s+ " number " + abs);

    holder.image.setImageResource(R.drawable.r_arr);
    return rowView;

    }
}

要使listview项和按钮可单击，请执行此操作。

使ListView可聚焦 android：focusable =＆＃34; true＆＃34;

按钮无法在您的自定义列表视图项目中聚焦 android：focusable =＆＃34; false＆＃34;

Answer 4

方法1：

首先在xml中替换按钮代码，如下所示 <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/button" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:focusable="false" android:onClick="onClick" android:focusableInTouchMode="false" android:layout_toLeftOf="@+id/imageArrow" android:layout_toStartOf="@+id/imageArrow" />

然后转到您的活动并编写如下代码

public void onClick(View v)
   {
      super.onClick(v);
      if (v.getId() == R.id.button)
      {
          //your code goes here
       }
   }

或者你可以在下面添加以下代码和平创建

方法2：

Button button = (Button) findViewById(R.id.button);

    button.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            // TODO Auto-generated method stub
        }
    });

Answer 5

不建议在listview中为同一行项目提供两个单击侦听器。

您可以拥有Listview自定义适配器。您可以根据自己的要求进行自定义。

或

您可以在Activity / Fragment列表视图中使用onclicklistener。这是无法自定义的，当您单击时，选择了整行。

ListView中的按钮不可单击

5 个答案: