Question

这是我的代码，其中m试图从服务器提取aal数据但是错误来自＆＃34; setImageView（）＆＃34;方法。任何人都可以尽快帮助我。我的代码是关于从服务器显示信息和图像。

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不需要。如果你想在当前活动的视图层次中搜索，
convertView未初始化。

内部onCreate()，
convertView=this;
或
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));

删除我的代码错误请

2 个答案: