我有一个ListView使用自定义适配器,但我不能单击ListView项..
列表视图的活动..
package com.adhamenaya.projects;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.adhamenaya.classes.Place;
public class PlacesListActivity extends Activity {
private ArrayList<Place> places;
private ArrayList<String> items;
GridviewAdapter mAdapter;
private ListView lvPlaces;
private EfficientAdapter adap;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.places_list);
lvPlaces = (ListView) this.findViewById(R.id.lvPlaces);
new DowanloadPlaces().execute("");
}
private void bindList(ArrayList<Place> places) {
this.places …我正在尝试在RecyclerView中加载Youtube视频缩略图.我正面临一些问题.
这是我在适配器中正在做的事情:
public static class ItemViewHolder extends RecyclerView.ViewHolder {
private YouTubeThumbnailView thumb;
public Post post;
public ItemViewHolder(View v) {
thumb = (YouTubeThumbnailView) v.findViewById(R.id.youtube_thumbnail);
}
@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
if (holder instanceof ItemViewHolder) {
((ItemViewHolder) holder).thumb.initialize(YOUTUPEKEY, new YouTubeThumbnailView.OnInitializedListener() {
@Override
public void onInitializationSuccess(YouTubeThumbnailView youTubeThumbnailView, YouTubeThumbnailLoader youTubeThumbnailLoader) {
youTubeThumbnailLoader.setVideo(VIDEOID);
}
@Override
public void onInitializationFailure(YouTubeThumbnailView youTubeThumbnailView, YouTubeInitializationResult youTubeInitializationResult) {
}});
}}}
它工作正常,但我不是我做得对.当我在另一个活动中使用相同的适配器时,我收到此错误:
Activity com.example.yasser.version6.Mespublications has leaked ServiceConnection com.google.android.youtube.player.internal.r$e@4252bcb8 that was originally bound here
加载缩略图需要时间,有时在滑动时会在它们之间混合.
我添加了一个函数来释放所有Youtube加载器:
public void …将适配器代码转换为Kotlin之后，我得到了此错误：
java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter convertView
at ...MyAdapter.getView(Unknown Source:35)
at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:220)
at android.widget.AbsListView.obtainView(AbsListView.java:2366)
扩大行时会引发错误：
class LegalAdapter internal constructor(private val activity: Activity, private val list: ArrayList<Item>) : BaseAdapter() {
override fun getView(position: Int, convertView: View, parent: ViewGroup): View {
val layoutInflater = activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
@SuppressLint("ViewHolder")
val row = layoutInflater.inflate(R.layout.legal_list_item, parent, false) //exception is throw here
显然，某些不应该为null的参数为null，然后kotlin对其进行检查。问题是我什至无法调试新的kotlin代码。
是否有可能制作一个网格视图,而不是图片网格,每个网格下面都有一个小图像按钮的图片网格？