StartActivity() разбивает приложение

Question

Я пытаюсь отправить данные между различными видами деятельности, это отправка код:

public void sendToFavorites(Context context){ 
     String vID,vThumbnail,vTitle; 
     Bundle extras = new Bundle(); 

     vID = sendResult.getId().getVideoId(); 
     vThumbnail = sendResult.getSnippet().getThumbnails().getMedium().getUrl(); 
     vTitle = sendResult.getSnippet().getTitle(); 
     extras.putString("id",vID); 

     intent = new Intent(context,Favorites.class); 
     intent.putExtras(extras); 
     startActivity(intent); <----- Application crash here. 
} 

Это LogCat:

05-18 18:39:00.560 28528-28528/project.youtubeplayer E/AndroidRuntime﹕ FATAL EXCEPTION: main 
Process: project.youtubeplayer, PID: 28528 
java.lang.NullPointerException: Attempt to invoke virtual method 'android.app.ActivityThread$ApplicationThread android.app.ActivityThread.getApplicationThread()' on a null object reference 
     at android.app.Activity.startActivityForResult(Activity.java:3745) 
     at android.app.Activity.startActivityForResult(Activity.java:3706) 
     at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:817) 
     at android.app.Activity.startActivity(Activity.java:4016) 
     at android.app.Activity.startActivity(Activity.java:3984) 
     at project.youtubeplayer.MainActivity.sendToFavorites(MainActivity.java:183) 
     at project.youtubeplayer.YtAdapter$1.onClick(YtAdapter.java:77) 
     at android.view.View.performClick(View.java:4780) 
     at android.view.View$PerformClick.run(View.java:19866) 
     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:5254) 
     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:903) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 

Позвонив в sendToFavroites:

 mHolder.mVideoFavorite.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      AppUtils.showToast(result.getSnippet().getTitle() + " Was added to favorites."); 
      m.sendResult = result; 
      m.sendToFavorites(mActivity); 
     } 
    }); 

YtAdapter:

public class YtAdapter extends BaseAdapter { 
private Activity mActivity = null; 
private List<SearchResult> mVideoList = null; 
private LayoutInflater mLayoutInflater = null; 
MainActivity m = new MainActivity(); 

public YtAdapter(Activity iActivity){ 
    mActivity = iActivity; 
    mLayoutInflater = LayoutInflater.from(mActivity); 
} 
public void setmVideoList(List<SearchResult> mVideoList){ 
    this.mVideoList = mVideoList; 
} 

@Override 
public int getCount() { 
    return (mVideoList == null)? (0):(mVideoList.size()); 
} 

@Override 
public Object getItem(int position) { 
    return (mVideoList != null && mVideoList.size()>position)? (mVideoList.get(position)):(null); 
} 

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

@Override 
public View getView(final int position, View convertView, final ViewGroup parent) { 
    final ViewHolder mHolder; 
    if(convertView != null){ 
     mHolder = (ViewHolder)convertView.getTag(); 
    }else{ 
     mHolder = new ViewHolder(); 
     convertView = mLayoutInflater.inflate(R.layout.view_video_item,null); 
     mHolder.mVideoThumbnail = (ImageView)convertView.findViewById(R.id.video_thumbnail); 
     mHolder.mVideoTitle = (TextView)convertView.findViewById(R.id.video_title); 
     mHolder.mVideoFavorite = (ImageView)convertView.findViewById(R.id.video_favorite); 

     convertView.setTag(mHolder); 
    } 
    //Setting the data 
    final SearchResult result = mVideoList.get(position); 
    mHolder.mVideoTitle.setText(result.getSnippet().getTitle()); 

    //Loading the image 
    Picasso.with(mActivity).load(result.getSnippet().getThumbnails().getMedium().getUrl()).into(mHolder.mVideoThumbnail); 

    //OnClickListeners 
    mHolder.mVideoFavorite.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      AppUtils.showToast(result.getSnippet().getTitle() + " Was added to favorites."); 
      m.sendResult = result; 
      m.sendToFavorites(mActivity); 
     } 
    }); 

    mHolder.mVideoThumbnail.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      AppUtils.showToast("Please click on title to start video"); 
     } 
    }); 
    return convertView; 
} 

private class ViewHolder{ 
    private TextView mVideoTitle = null; 
    private ImageView mVideoThumbnail = null; 

    //Testing 
    private ImageView mVideoFavorite = null; 
} 

От MainActivity вызывающему YtAdapter:

@Override 
public void completedRequest(Object... objects){ 
    //Dismiss the dialog 
    if(mLoadingDialog != null && mLoadingDialog.isShowing()) 
     mLoadingDialog.dismiss(); 

    //Parse the response based on type of request 
    Integer reqCode = (Integer) objects[0]; 
    if(reqCode == null || reqCode == 0) 
     throw new NullPointerException("Request Code's value is Invalid."); 
    switch (reqCode){ 
     case SEARCH_VIDEO: 
      if(mYtadapter == null){ 
       mYtadapter = new YtAdapter(this); 
       mYtadapter.setmVideoList((List<SearchResult>)objects[1]); 
       mVideoLsv.setAdapter(mYtadapter); 
      }else{ 
       mYtadapter.setmVideoList((List<SearchResult>) objects[1]); 
       mYtadapter.notifyDataSetChanged(); 
      } 
      break; 
    } 
} 

Я пытался искать в сети для этой проблемы, но не смогли найти ответы .. Надеюсь, что вы, ребята, могли бы мне помочь.

Answer 1

Попробуйте:

В activity, определяют context

final Context context = this; 

Использование его в adapter вместо activity.

m.sendToFavorites(context); 

Так, в adapter, определяют Context cxt;

public YtAdapter(Context _cxt){ 
.... 
cxt = _cxt; 
} 

Затем используйте его как следующее:

intent = new Intent(cxt,Favorites.class); 
     intent.putExtras(extras); 
     cxt.startActivity(intent); 

Я хожу так, когда я использовать adapter.

Надеюсь, это поможет.