使用Parse.com发送图片以进行其他活动Android

我在应用程序中遇到问题。它有一个应用程序屏幕，可以获取parse.com数据，以防照片。我想将它传递到另一个屏幕，但不会丢失质量。我甚至设法将图像移动到另一个屏幕，但它的质量很差，模糊。没有她的另一种方式可以让她失去质量吗？我的代码是这样的：使用Parse.com发送图片以进行其他活动Android

public class Eventos extends ActionBarActivity { 

ListView listview; 
List<ParseObject> ob; 
ProgressDialog mProgressDialog; 
ListViewEventos adapter; 
private List<GetEventos> eventos_lista = null; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.eventos); 
    new RemoteDataTask().execute(); 
} 

// RemoteDataTask AsyncTask 
private class RemoteDataTask extends AsyncTask<Void, Void, Void> { 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     // Create a progressdialog 
     mProgressDialog = new ProgressDialog(Eventos.this); 
     // Set progressdialog title 
     mProgressDialog.setTitle("Carregando Dados..."); 
     // Set progressdialog message 
     mProgressDialog.setMessage("Aguarde..."); 
     mProgressDialog.setIndeterminate(false); 
     // Show progressdialog 
     mProgressDialog.show(); 
    } 

    @Override 
    protected Void doInBackground(Void... params) { 
     // Create the array 
     eventos_lista = new ArrayList<GetEventos>(); 
     try { 
      // Localizando a classe noticias no parse.com 
      ParseQuery<ParseObject> query = new ParseQuery<ParseObject>(
        "Eventos"); 


      //colocando por ordem de data 
      query.orderByAscending("Number"); 
      ob = query.find(); 
      for (ParseObject titulo : ob) { 
       // Localizando as imagens na coluna foto do parse 
       ParseFile image = (ParseFile) titulo.get("Foto"); 
       ParseFile img = (ParseFile) titulo.get("FotoEvento"); 

       GetEventos eventos = new GetEventos(); 
       eventos.setTitulo((String) titulo.get("Titulo")); 
       eventos.setDescricao((String) titulo.get("Descricao")); 
       eventos.setTextoEvento((String) titulo.get("TextoEvento")); 
       eventos.setFoto(image.getUrl()); 
       eventos.setFotoEvento(img.getUrl());//<-THIS IS THE IMAGE 
       eventos_lista.add(eventos); 
      } 

     } catch (ParseException e) { 
      Log.e("Error", e.getMessage()); 
      e.printStackTrace(); 
     } 
     return null; 
    } 

    @Override 
    protected void onPostExecute(Void result) { 
     // Locate the listview in listview_main.xml 
     listview = (ListView) findViewById(R.id.listViewEventos); 
     // Pass the results into ListViewAdapter.java 
     adapter = new ListViewEventos(Eventos.this, 
       eventos_lista); 
     // Binds the Adapter to the ListView 
     listview.setAdapter(adapter); 
     // Close the progressdialog 
     mProgressDialog.dismiss(); 
    } 
}

列表视图的适配器：

public class ListViewEventos extends BaseAdapter { 

// Declare Variables 
Context context; 
LayoutInflater inflater; 
ImageLoader imageLoader = new ImageLoader(context); 
private List<GetEventos> eventos_lista = null; 
private ArrayList<GetEventos> arraylist; 

public ListViewEventos(Context context, 
         List<GetEventos> eventos_lista) { 
    this.context = context; 
    this.eventos_lista = eventos_lista; 
    inflater = LayoutInflater.from(context); 
    this.arraylist = new ArrayList<GetEventos>(); 
    this.arraylist.addAll(eventos_lista); 
    imageLoader = new ImageLoader(context); 
} 

public class ViewHolder { 
    TextView titulo; 
    TextView descricao; 
    ImageView foto; 
} 

@Override 
public int getCount() { 
    return eventos_lista.size(); 
} 

@Override 
public Object getItem(int position) { 
    return eventos_lista.get(position); 
} 

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

public View getView(final int position, View view, ViewGroup parent) { 
    final ViewHolder holder; 
    if (view == null) { 
     holder = new ViewHolder(); 
     view = inflater.inflate(R.layout.listview_eventos, null); 
     // Locate the TextViews in listview_eventos.xml 
     holder.titulo = (TextView) view.findViewById(R.id.TituloEvento); 
     holder.descricao = (TextView) view.findViewById(R.id.DescricaoEvento); 
     // Locate the ImageView in listview_noticias.xml.xml 
     holder.foto = (ImageView) view.findViewById(R.id.ImgEvento); 
     view.setTag(holder); 
    } else { 
     holder = (ViewHolder) view.getTag(); 
    } 
    // Set the results into TextViews 
    holder.titulo.setText(eventos_lista.get(position).getTitulo()); 
    holder.descricao.setText(eventos_lista.get(position).getDescricao()); 
    // Set the results into ImageView 
    imageLoader.DisplayImage(eventos_lista.get(position).getFoto(), 
      holder.foto); 
    // Listen for ListView Item Click 
    view.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // Send single item click data to SingleItemView Class 
      Intent intent = new Intent(context, EventosAbrir.class); 
      // Pass all data rank 
      intent.putExtra("titulo", 
        (eventos_lista.get(position).getTitulo())); 

      intent.putExtra("descricao", 
        (eventos_lista.get(position).getDescricao())); 
      // Pass all data flag 
      intent.putExtra("textoevento", 
        (eventos_lista.get(position).getTextoEvento())); 


      //HANDLE THE IMAGE OF THE ARRAY AND SEND TO THE NEXT ACTIVITY 
      intent.putExtra("fotoevento", 
        (eventos_lista.get(position).getFotoEvento())); 

      context.startActivity(intent); 
     } 
    }); 
    return view; 
}

接收数据，包括图像的活性：该通知getStringExtra

public class EventosAbrir extends ActionBarActivity { 

String titulo; 
String fotoevento; 
String descricao; 
String textoevento; 
ImageLoader imageLoader = new ImageLoader(this); 

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

    Intent i = getIntent(); 
    // Get the result of rank 
    titulo = i.getStringExtra("titulo"); 

    textoevento = i.getStringExtra("textoevento"); 
    // Get the result of country 
    descricao = i.getStringExtra("descricao"); 

    //TAKE THE IMAGE OF THE PREVIOUS ACTIVITY 
    fotoevento = i.getStringExtra("fotoevento"); 


    TextView title = (TextView) findViewById(R.id.TituloAbrir); 
    TextView desc = (TextView) findViewById(R.id.DescricaoAbrir); 
    TextView txtevento = (TextView) findViewById(R.id.textoevento); 

    ImageView imgflag = (ImageView) findViewById(R.id.abrir_foto); 
    imgflag.setScaleType(ImageView.ScaleType.FIT_XY); 

    // Set results to the TextViews 
    title.setText(titulo); 
    desc.setText(descricao); 
    txtevento.setText(textoevento); 

    // Capture position and set results to the ImageView 
    // Passes flag images URL into ImageLoader.class 
    //DISPLAY THE IMAGE OF THE PREVIOUS ACTIVITY 
    imageLoader.DisplayImage(fotoevento, imgflag); 
}

需要fotoevento作为字符串，这有什么影响吗？

来源

2015-11-07 Luan Felipe Appolinário

我想你好想匹配get方法（适配器）

你注入IMAGEURL到ImageView的

imageLoader.DisplayImage(eventos_lista.get(position).getFoto(), 
     holder.foto);

但通过数据

intent.putExtra("fotoevento", 
       (eventos_lista.get(position).getFotoEvento()));

我建议检查“fotoevento 'in EventosAbrir class

编辑：

https://stackoverflow.com/a/19402510/2530660
或

ImageView.ScaleType.FIT_CENTER

和宽度，高度wrap_conetent

来源

2015-11-07 19:23:41 LEETAEJUN

此代码： imageLoader.DisplayImage（eventos_lista.get（位置）.getFoto （）， holder.foto）; 这张照片不会传递给其他屏幕。我没有在这个屏幕上使用fotoevento。我只是将它传递给另一个屏幕，代码如下： intent.putExtra（“fotoevento”，（eventos_lista.get（position）.getFotoEvento（）））; –

eventos_lista.get（position）.getFoto（），holder.foto不是imageurl？ – LEETAEJUN

是的，但我有两个图像：一个会出现在这个屏幕上，另一个只会传递给另一个屏幕。两者不同。 –

使用Parse.com发送图片以进行其他活动Android

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