Volleyでデータを取得できない｡
Volleyを使って､YouTubeの動画データを取得しようとしたのですが､取得できませんでした｡
リクエストURL､データ取得用のメソッドとデータ取得部分は以下のとおりです｡
responseをLogで出力して見ましたが表示されませんでした｡ なので､リクエスト自体ができていないのだと考えられます｡ また､エラーはここで得られた､データを送った先のBasaAdapterを拡張したクラスで､取得したクラスを参照しようとした時に､NullPointerExceptionが出ました｡ そのBaseAdapter拡張クラスも以下に掲示します｡
リクエストURL
"https://www.googleapis.com/youtube/v3/videos?part=id,snippet,contentDetails,statistics&id="
+ videoId + "&key=" + apiKey
ブラウザでも試したのでURLに問題は無いはずです｡Log出力もできました｡
動画情報取得メソッド:
private void videoRequest(String url){
RequestSingleton.getInstance(getActivity().getApplicationContext()).addToRequestQueue(new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
final Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'").create();
//動画情報を変数に代入
//表示されない｡
Log.d("responce", response.toString());
videoDetail = gson.fromJson(response.toString(), VideoDetail.class);
videoItem = videoDetail.items.get(0);
String channelRequestUrl = "https://www.googleapis.com/youtube/v3/channels?part=id,snippet,statistics&id="
+ videoItem.snippet.channelId + "&key=" + apiKey;
channelRequest(channelRequestUrl);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("tag", new String(error.networkResponse.data), error);
}
}));
}
メソッド呼び出し部:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(getArguments()!=null){
this.videoId = getArguments().getString(VIDEO_ID);
}
mQueue = RequestSingleton.getInstance(getActivity().getApplicationContext()).getRequestQueue();
apiKey = DeveloperKey.API_KEY;
//初期化処理
suggestVideoList1 = new ArrayList<>();
suggestVideoList2 = new ArrayList<>();
videoDetail = new VideoDetail();
videoItem = new VideoItems();
suggestVideoDetail = new VideoDetail();
suggestVideoSearchResult = new VideoSearchResult();
chSearch = new ChannelSearchResult();
chItem = new ChannelSearchItems();
//再生動画の動画情報をリクエスト
Log.d("videoId", videoId);
String videoRequestUrl = "https://www.googleapis.com/youtube/v3/videos?part=id,snippet,contentDetails,statistics&id="
+ videoId + "&key=" + apiKey;
Log.d("url", videoRequestUrl);
//動画情報を取得
videoRequest(videoRequestUrl);
}
BaseAdapter拡張クラス(修正版の修正版)
public class InfoListAdapter extends BaseAdapter{
private Context context;
private LayoutInflater inflater;
private VideoItems videoItems;
private ChannelSearchItems channelItems;
private List<VideoItems> videoItemsList;
private NumberFormat nft;
private int minusCount;
private static final int TITLE_AND_DESCRIPTION = 0;
private static final int CH_TITLE_AND_SUB = 1;
private static final int SUGGESTION = 2;
public InfoListAdapter(Context context, VideoItems object1, ChannelSearchItems object2,
List<VideoItems> object3){
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.context = context;
this.videoItems = object1;
this.channelItems = object2;
this.nft = NumberFormat.getNumberInstance();
this.videoItemsList = new ArrayList<>();
for(int i=0; i<object3.size(); i++){
this.videoItemsList.add(object3.get(i));
}
this.minusCount=4;
}
//各ViewHolder
static class TitleAndDescriptionViewHolder{
TextView title;
TextView viewCount;
TextView description;
TextView category;
TextView license;
TextView good;
TextView bad;
ImageView indicator;
}
static class ChNameAndSubViewHolder{
ImageView chIcon;
TextView chTitle;
TextView subCount;
}
static class SuggestionListViewHolder{
ImageView thumbnail0;
TextView duration0;
TextView title0;
TextView chName0;
TextView viewCount0;
ImageView thumbnail1;
TextView duration1;
TextView title1;
TextView chName1;
TextView viewCount1;
ImageView thumbnail2;
TextView duration2;
TextView title2;
TextView chName2;
TextView viewCount2;
}
@Override
public long getItemId(int position){
return position;
}
@Override
public Object getItem(int position){
return position;
}
@Override
public int getCount(){
return 4;
}
@Override
public int getViewTypeCount(){
return 4;
}
@Override
public int getItemViewType(int position){
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent){
int viewType = getItemViewType(position);
if(viewType==TITLE_AND_DESCRIPTION) {
//動画の説明等
TitleAndDescriptionViewHolder tAndDHolder = new TitleAndDescriptionViewHolder();
if (convertView == null) {
convertView = inflater.inflate(R.layout.title_and_description, parent, false);
tAndDHolder.description = (TextView) convertView.findViewById(R.id.description);
tAndDHolder.viewCount = (TextView) convertView.findViewById(R.id.view_count);
tAndDHolder.title = (TextView) convertView.findViewById(R.id.video_title);
tAndDHolder.category = (TextView) convertView.findViewById(R.id.category);
tAndDHolder.license = (TextView) convertView.findViewById(R.id.license);
tAndDHolder.good = (TextView) convertView.findViewById(R.id.good);
tAndDHolder.bad = (TextView) convertView.findViewById(R.id.bad);
tAndDHolder.indicator = (ImageView)convertView.findViewById(R.id.exp_button);
convertView.setTag(tAndDHolder);
} else {
tAndDHolder = (TitleAndDescriptionViewHolder) convertView.getTag();
}
Picasso.with(context).load(android.R.drawable.arrow_down_float).into(tAndDHolder.indicator);
tAndDHolder.title.setText(videoItems.snippet.title);
tAndDHolder.description.setText(videoItems.snippet.description);
tAndDHolder.viewCount.setText(nft.format(videoItems.statistics.viewCount) + " "
+ R.string.views);
tAndDHolder.category.setText(videoItems.snippet.categoryId);
tAndDHolder.license.setText(videoItems.status.license);
tAndDHolder.good.setText(nft.format(videoItems.statistics.likeCount));
tAndDHolder.bad.setText(nft.format(videoItems.statistics.dislikeCount));
}else if(viewType==CH_TITLE_AND_SUB) {
//チャンネルタイトルと購読者数
ChNameAndSubViewHolder cTAndSHolder = new ChNameAndSubViewHolder();
if (convertView == null) {
convertView = inflater.inflate(R.layout.ch_name_and_sub, parent, false);
cTAndSHolder.chIcon = (ImageView) convertView.findViewById(R.id.ch_pic);
cTAndSHolder.chTitle = (TextView) convertView.findViewById(R.id.ch_name);
cTAndSHolder.subCount = (TextView) convertView.findViewById(R.id.sub_count);
convertView.setTag(cTAndSHolder);
} else {
cTAndSHolder = (ChNameAndSubViewHolder) convertView.getTag();
}
Picasso.with(context).load(channelItems.snippet.thumbnails.default1.url)
.transform(new CircleTransform()).into(cTAndSHolder.chIcon);
cTAndSHolder.subCount.setText(nft.format(channelItems.statistics.subscriberCount) + " "
+ R.string.subs);
cTAndSHolder.chTitle.setText(channelItems.snippet.title);
}else if(viewType==SUGGESTION) {
//おすすめという帯
if (convertView == null) {
convertView = inflater.inflate(R.layout.suggestion, parent, false);
}
}else{
//おすすめ動画
SuggestionListViewHolder suggestHolder = new SuggestionListViewHolder();
if(convertView == null){
//1列目
convertView = inflater.inflate(R.layout.suggestion_list, parent,false);
suggestHolder.chName0 = (TextView)convertView.findViewById(R.id.suggest_ch_name_0);
suggestHolder.duration0 = (TextView)convertView.findViewById(R.id.suggest_duration0);
suggestHolder.thumbnail0 = (ImageView)convertView.findViewById(R.id.iv_thumbnail_0);
suggestHolder.title0 = (TextView)convertView.findViewById(R.id.suggest_video_name_0);
suggestHolder.viewCount0 = (TextView)convertView.findViewById(R.id.suggest_video_view_0);
//2列目
suggestHolder.chName1 = (TextView)convertView.findViewById(R.id.suggest_ch_name_1);
suggestHolder.duration1 = (TextView)convertView.findViewById(R.id.suggest_duration1);
suggestHolder.thumbnail1 = (ImageView)convertView.findViewById(R.id.iv_thumbnail_1);
suggestHolder.title1 = (TextView)convertView.findViewById(R.id.suggest_video_name_1);
suggestHolder.viewCount1 = (TextView)convertView.findViewById(R.id.suggest_video_view_1);
//3列目
suggestHolder.chName2 = (TextView)convertView.findViewById(R.id.suggest_ch_name_2);
suggestHolder.duration2 = (TextView)convertView.findViewById(R.id.suggest_duration2);
suggestHolder.thumbnail2 = (ImageView)convertView.findViewById(R.id.iv_thumbnail_2);
suggestHolder.title2 = (TextView)convertView.findViewById(R.id.suggest_video_name_2);
suggestHolder.viewCount2 = (TextView)convertView.findViewById(R.id.suggest_video_view_2);
convertView.setTag(suggestHolder);
}else{
suggestHolder = (SuggestionListViewHolder)convertView.getTag();
}
//1列目
suggestHolder.chName0.setText(videoItemsList.get(position-minusCount).snippet.channelTitle);
suggestHolder.duration0.setText(durationConverter(videoItemsList.get(position-minusCount).contentDetails.duration));
Picasso.with(context).load(videoItemsList.get(position-minusCount).snippet.thumbnails.medium.url)
.placeholder(R.drawable.thumback).error(android.R.drawable.ic_dialog_alert)
.into(suggestHolder.thumbnail0);
suggestHolder.title0.setText(videoItemsList.get(position-minusCount).snippet.title);
suggestHolder.viewCount0.setText(nft.format(videoItemsList.get(position-minusCount).statistics.viewCount) + " " + R.string.views);
//2列目
suggestHolder.chName1.setText(videoItemsList.get(position-minusCount-1).snippet.channelTitle);
suggestHolder.duration1.setText(durationConverter(videoItemsList.get(position-minusCount-1).contentDetails.duration));
Picasso.with(context).load(videoItemsList.get(position-minusCount-1).snippet.thumbnails.medium.url)
.placeholder(R.drawable.thumback).error(android.R.drawable.ic_dialog_alert)
.into(suggestHolder.thumbnail1);
suggestHolder.title1.setText(videoItemsList.get(position-minusCount-1).snippet.title);
suggestHolder.viewCount1.setText(nft.format(videoItemsList.get(position-minusCount-1).statistics.viewCount) + " " + R.string.views);
//3列目
suggestHolder.chName2.setText(videoItemsList.get(position-minusCount-2).snippet.channelTitle);
suggestHolder.duration2.setText(durationConverter(videoItemsList.get(position-minusCount-2).contentDetails.duration));
Picasso.with(context).load(videoItemsList.get(position-minusCount-2).snippet.thumbnails.medium.url)
.placeholder(R.drawable.thumback).error(android.R.drawable.ic_dialog_alert)
.into(suggestHolder.thumbnail2);
suggestHolder.title2.setText(videoItemsList.get(position-minusCount-2).snippet.title);
suggestHolder.viewCount2.setText(nft.format(videoItemsList.get(position-minusCount-2).statistics.viewCount) + " " + R.string.views);
minusCount--;
}
return convertView;
}
..............................
解決方法がありましたら｡どうぞよろしくおねがいします｡
エラーログ
02-10 20:43:51.431 23372-23372/com.wotageishika.zousan.wotageishika E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.wotageishika.zousan.wotageishika, PID: 23372
java.lang.NullPointerException: Attempt to read from field 'java.lang.String com.wotageishika.zousan.wotageishika.VideoSnippet.title' on a null object reference
at com.wotageishika.zousan.wotageishika.InfoListAdapter.getView(InfoListAdapter.java:131)
at android.widget.AbsListView.obtainView(AbsListView.java:2344)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1270)
at android.widget.ListView.onMeasure(ListView.java:1182)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
at android.view.View.measure(View.java:17430)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
at android.view.View.measure(View.java:17430)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2001)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1166)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1372)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
リクエストURLのログ出力:
D/url﹕ https://www.googleapis.com/youtube/v3/videos?part=id,snippet,contentDetails,statistics&id=at8Z3KQnb9Q&key=AIzaSyAw-Gp-yjGm2agxAVr08-k5hLxIfjitGiI