Question

我已经尝试过使用可点击和可聚焦但似乎没有任何东西可以让列表项可以点击。

xml文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<Button
    android:id="@+id/add_recipe_button"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/recipe_activity_add"
    android:background="@color/colorPrimary"
    android:textColor="#fff"/>

<ListView
    android:id="@+id/recipe_list"
    android:layout_width="match_parent"
    android:focusable="false"
    android:clickable="true"
    android:layout_height="match_parent" />

java代码

recipeListView = (ListView)findViewById(R.id.recipe_list);


    //make viewRecipe Work
    recipeListView.setOnItemClickListener(new ListView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Log.d("MainActivity", "ListView item clicked.");
        }
    });

Answer 1

当您在Listview项目的子项目上设置onClickListner时，尝试在Listview项目上设置setOnItemClickListner时，Android有时会显示一种奇怪的行为。试着检查你＆＃34;适配器＆＃34;根据标准，确保一切都很好并妥善管理。使用ViewHolder访问Adapter类中的子项。这是Adapter的示例类。使用这个，希望它能够发挥作用。

 import android.content.Context;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.TextView;



import java.util.ArrayList;

import de.hdodenhof.circleimageview.CircleImageView;

 /**
 * Created by Zohaib Hassan on 11/28/2016.
 */

 public class InboxAdapter extends ArrayAdapter<InboxRow> {

ArrayList<InboxRow> items;
Context context;


public InboxAdapter(Context context, int resource, ArrayList<InboxRow> items) {
    super(context , resource , items);
    this.context = context;
    this.items = items;

}



@Override

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

    // Get the data item for this position

    InboxRow rowItem = getItem(position);

    // Check if an existing view is being reused, otherwise inflate the view

    ViewHolder viewHolder; // view lookup cache stored in tag

    if (convertView == null) {

        viewHolder = new ViewHolder();

        LayoutInflater inflater = LayoutInflater.from(context);

        convertView = inflater.inflate(R.layout.inbox_row, null);

        viewHolder.tvUserName = (TextView) convertView.findViewById(R.id.tv_user_name_inbox);
        viewHolder.tvMessage = (TextView) convertView.findViewById(R.id.tv_message_inbox);
        viewHolder.tvTimeCount = (TextView) convertView.findViewById(R.id.tv_time_count_inbox);
        viewHolder.userProfilePic = (CircleImageView) convertView.findViewById(R.id.inbox_profile_image);

        convertView.setTag(viewHolder);

    } else {

        viewHolder = (ViewHolder) convertView.getTag();

    }


    /*CircleImageView ivProfileImage Set Background with Picasso*/

    return convertView;

}

private static class ViewHolder {

    TextView tvUserName , tvMessage , tvTimeCount;
    CircleImageView userProfilePic;

}

}

最后一件事，请确保＆＃34; ListView＆＃34;在您的布局类中设置为＆＃34; match-parent＆＃34;高度和宽度。

使列表可单击

1 个答案: