java.lang.OutOfMemoryError bei com.mysamples.jsonparsingdemo2.MainActivity $ MovieAdapter.getView (MainActivity.java:158)

Question

Ich versuche, das Json-Objekt zu analysieren, aber immer noch erscheint der Fehler. Hier ist der Code aus der MainActivity.java: Der Fehlerstatus.

FATAL AUSNAHME: Haupt Prozess: com.mysamples.jsonparsingdemo2, PID: 2618 java.lang.OutOfMemoryError

package com.mysamples.jsonparsingdemo2; 

import android.content.Context; 
import android.os.AsyncTask; 
import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.ImageView; 
import android.widget.ListView; 
import android.widget.RatingBar; 
import android.widget.TextView; 

import com.mysamples.jsonparsingdemo2.models.MovieModels; 

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 


import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.net.HttpURLConnection; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.util.ArrayList; 
import java.util.List; 

public class MainActivity extends ActionBarActivity { 


    private ListView listView; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    listView = (ListView)findViewById(R.id.listView); 

     } 




public class JSONTask extends AsyncTask<String,String,List<MovieModels>> { 

    @Override 
    protected List<MovieModels> doInBackground(String... urls) { 
     HttpURLConnection httpURLConnection = null; 
     BufferedReader reader = null; 
     try { 
      URL url = new URL(urls[0]); 
      httpURLConnection = (HttpURLConnection) url.openConnection(); 
      httpURLConnection.connect(); 
      InputStream stream = httpURLConnection.getInputStream(); 
      reader = new BufferedReader(new InputStreamReader(stream)); 

      StringBuffer sBuffer = new StringBuffer(); 
      String line = ""; 
      while ((line = reader.readLine())!= null){ 
       sBuffer.append(line); 
      } 

      //Organizing the JSON object the JSON OBJECT 
      String finalJson = sBuffer.toString(); 

      JSONObject parentObject = new JSONObject(finalJson); 
      JSONArray parentArray = parentObject.getJSONArray("movies"); 

      //getting the objects from the url 
      List<MovieModels> modelList = new ArrayList<>(); 
      for (int j = 0; j <parentArray.length() ; j++) { 
       JSONObject finalObject = parentArray.getJSONObject(j); 
       MovieModels models = new MovieModels(); 


       //Displaying the values from the url 
       models.setMovie(finalObject.getString("movie")); 
       models.setYear(finalObject.getInt("year")); 
       models.setRating((float) finalObject.getDouble("rating")); 
       models.setDirector(finalObject.getString("director")); 
       models.setDuration(finalObject.getString("duration")); 
       models.setTagline(finalObject.getString("tagline")); 
       models.setImage(finalObject.getString("image")); 
       models.setStory(finalObject.getString("story")); 


       //getting the values from castList 
       List<MovieModels.Cast> castList = new ArrayList<>(); 
       for (int i = 0; i <finalObject.getJSONArray("cast").length() ; i++) { 
        MovieModels.Cast cast = new MovieModels.Cast(); 
        cast.setName(finalObject.getJSONArray("cast").getJSONObject(i).getString("name")); 
        castList.add(cast); 
       } 
       models.setCastList(castList); 
       modelList.add(models); 
      } 

      return modelList; 


     } catch (MalformedURLException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } finally { 

      if (httpURLConnection!=null){ 
       httpURLConnection.disconnect(); 
      } 
      try { 
       if (reader!= null){ 
        reader.close(); 
       } 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 

     return null; 
    } 

    @Override 
    protected void onPostExecute(List<MovieModels> result) { 
     super.onPostExecute(result); 
     MovieAdapter movieAdapter = new MovieAdapter(getApplicationContext(), R.layout.custom_row, result); 
     listView.setAdapter(movieAdapter); 
    } 
} 

public class MovieAdapter extends ArrayAdapter{ 

    private List<MovieModels> modelList; 
    private int resource; 
    private LayoutInflater inflater; 
    public MovieAdapter(Context context, int resource, List<MovieModels> objects) { 
     super(context, resource, objects); 
     modelList = objects; 
     this.resource = resource; 
     inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE); 

    } 

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

     if (convertView != null) { 
      convertView = inflater.inflate(R.layout.custom_row,null); 
     } 

     //CASTING ALL THE VIEWS FROM THE CUSTOM_ROW LAYOUT 
     ImageView imageView; 
     TextView textViewMovie; 
     TextView textViewYear; 
     TextView textViewDuration; 
     TextView textViewDirector; 
     TextView textViewTagLine; 
     TextView textViewCast; 
     TextView textViewStory; 
     RatingBar ratingBar; 

     imageView = (ImageView)convertView.findViewById(R.id.imageView); 
     textViewMovie = (TextView)convertView.findViewById(R.id.textViewMovie); 
     textViewYear = (TextView)convertView.findViewById(R.id.textViewYear); 
     textViewDuration =(TextView)convertView.findViewById(R.id.textViewDuration); 
     textViewDirector = (TextView)convertView.findViewById(R.id.textViewDirector); 
     textViewTagLine = (TextView)convertView.findViewById(R.id.textViewTagLine); 
     textViewCast = (TextView)convertView.findViewById(R.id.textViewCast); 
     textViewStory = (TextView)convertView.findViewById(R.id.textViewStory); 
     ratingBar = (RatingBar)convertView.findViewById(R.id.ratingBarMovie); 


     //DISPLAYING THE TEXT TO THE TEXTVIEWS 
     textViewMovie.setText(modelList.get(position).getMovie()); 
     textViewYear.setText(String.valueOf(modelList.get(position).getYear())); 
     textViewDuration.setText(modelList.get(position).getDuration()); 
     textViewDirector.setText(modelList.get(position).getDirector()); 
     textViewTagLine.setText(modelList.get(position).getTagline()); 

     //RATINGBAR 
     ratingBar.setRating(modelList.get(position).getRating()/2); 

     //GETTING THE CAST NAME FROM THE ARRAY 
     StringBuffer castBuffer = new StringBuffer(); 
     for (MovieModels.Cast cast : modelList.get(position).getCastList()){ 
      castBuffer.append(cast.getName()+ ", "); 
     } 
     textViewCast.setText(castBuffer); 
     textViewStory.setText(modelList.get(position).getStory()); 

     return convertView; 
    } 
} 

@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_refresh) { 
     new JSONTask().execute("http://jsonparsing.parseapp.com/jsonData/moviesData.txt"); 
    } 

    return super.onOptionsItemSelected(item); 
} 

}

Answer 1

Ich hatte diese falsche Bedingung in der if-Anweisung (convertView! = Null) bis (converView == null)

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


    if (convertView == null) { 
     convertView = inflater.inflate(R.layout.custom_row,null); 
    } 

Answer 2

Also, zuerst Ihre JSON ändern zu diesem unten, der Einfachheit halber Ich benutze keine URLs in meinem JSON, ich schreibe einfach den genauen Bildnamen.

{ 
     "movie": "Interstellar", 
     "year": 2014, 
     "rating": 8.7, 
     "duration": "169 min", 
     "director": "Christopher Nolan", 
     "tagline": "Mankind was born on Earth. It was never meant to die here.", 
     "cast": [ 
     { 
      "name": "Matthew McConaughey" 
     }, 
     { 
      "name": "Anne Hathaway" 
     }, 
     { 
      "name": "Jessica Chastain" 
     }, 
     { 
      "name": "Wes Bentley" 
     } 
     ], 
     "image": "interstellar.jpg", 
     "story": "A team of explorers travel through a wormhole in space in an attempt to ensure humanity's survival." 
    }, 
    { 
     "movie": "Fantastic Four", 
     "year": 2015, 
     "rating": 4.0, 
     "duration": "100 min", 
     "director": "Josh Trank", 
     "tagline": "Change is coming.", 
     "cast": [ 
     { 
      "name": "Miles Teller" 
     }, 
     { 
      "name": "Kate Mara" 
     }, 
     { 
      "name": "Michael B. Jordan" 
     } 
     ], 
     "image": "four.jpg", 
     "story": "Four young outsiders teleport to an alternate and dangerous universe which alters their physical form in shocking ways. The four must learn to harness their new abilities and work together to save Earth from a former friend turned enemy." 
    } 

Dann gehen Sie in Ihre Adapterklasse und deklarieren Sie dies zuerst;

private String url_load_images="http://jsonparsing.parseapp.com/jsonData/images/"; 

dann gehen danach getView() Methode und wie unten ändern.

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

     if (convertView != null) { 
      convertView = inflater.inflate(R.layout.custom_row,null); 
     } 

     //CASTING ALL THE VIEWS FROM THE CUSTOM_ROW LAYOUT 
     ImageView imageView; 
     TextView textViewMovie; 
     TextView textViewYear; 
     TextView textViewDuration; 
     TextView textViewDirector; 
     TextView textViewTagLine; 
     TextView textViewCast; 
     TextView textViewStory; 
     RatingBar ratingBar; 

     imageView = (ImageView)convertView.findViewById(R.id.imageView); 
     textViewMovie = (TextView)convertView.findViewById(R.id.textViewMovie); 
     textViewYear = (TextView)convertView.findViewById(R.id.textViewYear); 
     textViewDuration =(TextView)convertView.findViewById(R.id.textViewDuration); 
     textViewDirector = (TextView)convertView.findViewById(R.id.textViewDirector); 
     textViewTagLine = (TextView)convertView.findViewById(R.id.textViewTagLine); 
     textViewCast = (TextView)convertView.findViewById(R.id.textViewCast); 
     textViewStory = (TextView)convertView.findViewById(R.id.textViewStory); 
     ratingBar = (RatingBar)convertView.findViewById(R.id.ratingBarMovie); 


     //DISPLAYING THE TEXT TO THE TEXTVIEWS 
     textViewMovie.setText(modelList.get(position).getMovie()); 
     textViewYear.setText(String.valueOf(modelList.get(position).getYear())); 
     textViewDuration.setText(modelList.get(position).getDuration()); 
     textViewDirector.setText(modelList.get(position).getDirector()); 
     textViewTagLine.setText(modelList.get(position).getTagline()); 

     //RATINGBAR 
     ratingBar.setRating(modelList.get(position).getRating()/2); 

     //GETTING THE CAST NAME FROM THE ARRAY 
     StringBuffer castBuffer = new StringBuffer(); 
     for (MovieModels.Cast cast : modelList.get(position).getCastList()){ 
      castBuffer.append(cast.getName()+ ", "); 
     } 
     textViewCast.setText(castBuffer); 
     textViewStory.setText(modelList.get(position).getStory()); 



final MovieModels models = modelList.get(position); 
    Picasso.with(context) 
     .load(url_load_images+models.getImage) 
     .placeholder(R.drawable.user_placeholder) 
     .error(R.drawable.user_placeholder_error) 
     .into(imageView); 

     return convertView; 
    } 
}