Удалить ошибку моего кода Пожалуйста,

Question

Вот мой код, где m пытается извлечь данные из сервера, но ошибка приходит по методу setImageView(). Может кто-нибудь, пожалуйста, помогите мне как можно скорее. мой код посвящен отображению информации и изображений с сервера.

import android.os.Bundle; 
import android.app.Activity; 
import android.content.Intent; 
import android.view.Menu; 
import android.widget.ImageView; 
import android.widget.TextView; 

public class PlantDetails extends Activity { 

    String whichPlantId; 
    String whichPlantName; 
    String whichFamily; 
    String whichSystemOfMedicineUsed; 
    String whichHabit; 
    String whichMedUses; 
    String whichCultStatus; 
    String whichExplanation; 
    String whichimageurl; 
    ImageView tvTemp8; 
    Activity convertView; 
    //finding all textView and ImageView 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_plant_details); 
     TextView tvTemp = (TextView) findViewById(R.id.dpplant_id); 
     TextView tvTemp1 = (TextView) findViewById(R.id.dpfullplantname); 
     TextView tvTemp2 = (TextView) findViewById(R.id.dpfamily); 
     TextView tvTemp3 = (TextView) findViewById(R.id.dpdep_ref); 
     TextView tvTemp4 = (TextView) findViewById(R.id.dphabit); 
     TextView tvTemp5 = (TextView) findViewById(R.id.dpmeduses); 
     TextView tvTemp6 = (TextView) findViewById(R.id.dpcult_status); 
     TextView tvTemp7 = (TextView) findViewById(R.id.dpexplanation); 

     tvTemp8 = (ImageView) convertView.findViewById(R.id.dpimageurl); 
     Intent iGetDetails = getIntent(); 
     Bundle b = iGetDetails.getExtras(); 
     whichPlantId = b.getString("plant_id"); 
     whichPlantName = b.getString("fullplantname"); 
     whichFamily = b.getString("plantfamily"); 
     String whichDptRef = b.getString("dptRef"); 
     whichSystemOfMedicineUsed = "SysMed"; 
     if(whichDptRef.contains("A")) 
     { 
      whichSystemOfMedicineUsed += ", Ayurveda"; 
     } 
     if(whichDptRef.contains("S")) 
     { 
      whichSystemOfMedicineUsed += ", Siddha"; 
     } 
     if(whichDptRef.contains("U")) 
     { 
      whichSystemOfMedicineUsed += ", Unani"; 
     } 
     if(whichDptRef.contains("H")) 
     { 
      whichSystemOfMedicineUsed += ", Homeopathy"; 
     } 
     if(whichDptRef.contains("F")) 
     { 
      whichSystemOfMedicineUsed += ", Folk"; 
     } 
     if(whichDptRef.contains("T")) 
     { 
      whichSystemOfMedicineUsed += ", Sowa-Rigpa"; 
     } 
     if(whichDptRef.contains("M")) 
     { 
      whichSystemOfMedicineUsed += ", Modern"; 
     } 
     if(whichDptRef.contains("C")) 
     { 
      whichSystemOfMedicineUsed += ", Chinese"; 
     } 
     whichSystemOfMedicineUsed = whichSystemOfMedicineUsed.replace("SysMed, ", ""); 
     whichHabit = b.getString("habit"); 
     whichMedUses = b.getString("meduses"); 
     whichExplanation = b.getString("explanation"); 
     whichCultStatus = b.getString("cultStatus"); 
     whichimageurl = b.getString("imageurl"); 
     //seting Textview and imageview 
     tvTemp.setText("Plant Id is " + whichPlantId + " Image url is " + whichimageurl); 
     tvTemp1.setText("Plant Name: " + whichPlantName); 
     tvTemp2.setText("Family:" + whichFamily); 
     tvTemp3.setText("System of Medicines: " + whichSystemOfMedicineUsed); 
     tvTemp4.setText("Habit:" + whichHabit); 
     tvTemp5.setText("Medicinal Uses:" + whichMedUses); 
     tvTemp6.setText("Cultivated Status:" + whichCultStatus); 
     tvTemp7.setText("Explanation:" + whichExplanation); 
     tvTemp8.setImageResource(whichimageurl); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.activity_plant_details, menu); 
     return true; 
    } 

} 

Answer 1

tvTemp8 = (ImageView) convertView.findViewById(R.id.dpimageurl); 

convertView не требуется. И если вы хотите искать в иерархии текущей активности,
convertView не инициализируется.

Внутри onCreate(),
convertView=this;
или
convertView=PlantDetails.this;.

Answer 2

public static Bitmap getBitmapFromURL(String src) { 
     try { 
      Log.e("src",src); 
      URL url = new URL(src); 
      HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
      connection.setDoInput(true); 
      connection.connect(); 
      InputStream input = connection.getInputStream(); 
      Bitmap myBitmap = BitmapFactory.decodeStream(input); 
      Log.e("Bitmap","returned"); 
      return myBitmap; 
     } catch (IOException e) { 
      e.printStackTrace(); 
      Log.e("Exception",e.getMessage()); 
      return null; 
     } 
    } 

tvTemp8.setImageResource(whichimageurl);change this line to this line 

tvTemp8.setImageBitmap(getBitmapFromURL(whichimageurl));