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  • My listview not returning me to my DetailActivity.class when I'm clicking an item on listview

    @Batzbatz123
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    Answer it

    I am having trouble with my ListView. It always sends me back to my login page whenever I press an item on the list. It supposed to go to the details page. 

    Home Activity

    1. package com.example.kun.carcarkila;
    2.  
    3. import android.content.Intent;
    4. import android.os.Bundle;
    5. import android.support.v7.app.AppCompatActivity;
    6. import android.support.v7.widget.Toolbar;
    7. import android.view.View;
    8. import android.widget.AdapterView;
    9. import android.widget.ImageView;
    10. import android.widget.ListView;
    11.  
    12. import com.amigold.fundapter.BindDictionary;
    13. import com.amigold.fundapter.FunDapter;
    14. import com.amigold.fundapter.extractors.StringExtractor;
    15. import com.amigold.fundapter.interfaces.DynamicImageLoader;
    16. import com.kosalgeek.android.json.JsonConverter;
    17. import com.kosalgeek.genasync12.AsyncResponse;
    18. import com.kosalgeek.genasync12.PostResponseAsyncTask;
    19. import com.nostra13.universalimageloader.core.ImageLoader;
    20.  
    21. import java.io.Serializable;
    22. import java.util.ArrayList;
    23.  
    24. public class HomeActivity extends AppCompatActivity implements AsyncResponse, AdapterView.OnItemClickListener {
    25. final String LOG = "HomeActivity";
    26.  
    27. private ArrayList<Product> productList;
    28. private ListView lvProduct;
    29.  
    30. @Override
    31. protected void onCreate(Bundle savedInstanceState) {
    32.     super.onCreate(savedInstanceState);
    33.     setContentView(R.layout.activity_home);
    34.     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    35.     setSupportActionBar(toolbar);
    36.  
    37.  
    38.  
    39.     ImageLoader.getInstance().init(UILConfig.config(HomeActivity.this)); // Do it on Application start
    40.  
    41.     PostResponseAsyncTask taskRead = new PostResponseAsyncTask(HomeActivity.this, this);
    42.     taskRead.execute("http://10.0.2.2/carkila/product.php");
    43.  
    44.  
    45. }
    46.  
    47. @Override
    48. public void processFinish(String s) {
    49.  
    50.             productList = new JsonConverter<Product>().toArrayList(s, Product.class);
    51.  
    52.     BindDictionary<Product> dict = new BindDictionary<Product>();
    53.  
    54.     dict.addDynamicImageField(R.id.ivImg, new StringExtractor<Product>() {
    55.         @Override
    56.         public String getStringValue(Product item, int position) {
    57.             return item.img;
    58.         }
    59.     }, new DynamicImageLoader() {
    60.         @Override
    61.         public void loadImage(String url, ImageView imageView) {
    62.  
    63.             ImageLoader.getInstance().displayImage(url, imageView); // Default options will be used
    64.         }
    65.     });
    66.     dict.addStringField(R.id.tvCarModel, new StringExtractor<Product>() {
    67.         @Override
    68.         public String getStringValue(Product item, int position) {
    69.             return "Car Model: " + item.Car_Model;
    70.         }
    71.     });
    72.     dict.addStringField(R.id.tvCarType, new StringExtractor<Product>() {
    73.         @Override
    74.         public String getStringValue(Product item, int position) {
    75.             return "Car Type: " +  item.Car_Type;
    76.         }
    77.     });
    78.     dict.addStringField(R.id.tvCapacity, new StringExtractor<Product>() {
    79.         @Override
    80.         public String getStringValue(Product item, int position) {
    81.             return "Capacity: " + item.Capacity;
    82.         }
    83.     });
    84.  
    85.     FunDapter<Product> adapter = new FunDapter<>(
    86.             HomeActivity.this, productList, R.layout.layout_list, dict);
    87.     lvProduct = (ListView)findViewById(R.id.lvProduct);
    88.     lvProduct.setAdapter(adapter);
    89.     lvProduct.setOnItemClickListener(this);
    90. }
    91.  
    92. @Override
    93. public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    94.     Product selectedProduct = productList.get(position);
    95.     Intent in = new Intent(HomeActivity.this, DetailActivity.class);
    96.     in.putExtra("product", (Serializable) selectedProduct);
    97.     startActivity(in);
    98. }
    99. }

     

    Detail Activity

    1. package com.example.kun.carcarkila;
    2.  
    3. import android.os.Bundle;
    4. import android.support.design.widget.FloatingActionButton;
    5. import android.support.design.widget.Snackbar;
    6. import android.support.v7.app.AppCompatActivity;
    7. import android.support.v7.widget.Toolbar;
    8. import android.view.View;
    9. import android.widget.ImageView;
    10. import android.widget.TextView;
    11.  
    12. import com.nostra13.universalimageloader.core.ImageLoader;
    13.  
    14. public class DetailActivity extends AppCompatActivity {
    15. TextView tvCarModel, tvCarType, tvCapacity;
    16. ImageView ivImage;
    17.  
    18. @Override
    19. protected void onCreate(Bundle savedInstanceState) {
    20.     super.onCreate(savedInstanceState);
    21.     setContentView(R.layout.activity_detail);
    22.     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    23.     setSupportActionBar(toolbar);
    24.  
    25.     FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    26.     fab.setOnClickListener(new View.OnClickListener() {
    27.         @Override
    28.         public void onClick(View view) {
    29.             Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
    30.                     .setAction("Action", null).show();
    31.         }
    32.     });
    33.     getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    34.     ImageLoader.getInstance().init(UILConfig.config(DetailActivity.this));
    35.  
    36.     Product product = (Product) getIntent().getSerializableExtra("product");
    37.  
    38.     tvCarModel = (TextView)findViewById(R.id.tvCarModel);
    39.     tvCarType = (TextView)findViewById(R.id.tvCarType);
    40.     tvCapacity = (TextView)findViewById(R.id.tvCapacity);
    41.     ivImage = (ImageView)findViewById(R.id.ivImage);
    42.  
    43.     if(product != null){
    44.         tvCarModel.setText(product.Car_Model);
    45.         tvCarType.setText(product.Car_Type);
    46.         tvCapacity.setText(product.Capacity);
    47.         ImageLoader.getInstance().displayImage(product.img, ivImage);
    48.     }
    49. }
    50.  
    51. }

     

    Product Class

    1. package com.example.kun.carcarkila;
    2.  
    3. import com.google.gson.annotations.SerializedName;
    4.  
    5. public class Product {
    6.  
    7. @SerializedName("Car_No")
    8. public int Car_No;
    9. @SerializedName("Car_Model")
    10. public String Car_Model;
    11. @SerializedName("Car_Type")
    12. public String Car_Type;
    13. @SerializedName("Capacity")
    14. public int Capacity;
    15. @SerializedName("img")
    16. public String img;
    17. }

    Error is java.lang.ClassCastException: com.example.kun.carcarkila.Product cannot be cast to java.io.Serializable

    android studio Android
    Answer it

 2 Answer(s)

  • @AmanDeep
    Recommendations Offline Message

    over 8 years ago

    Your current activity is crashed because your Product class is not Serializable so thats why last activity i.e Login Activity appear.

    You need to implement Serializable interface on Product class.

    first line of you Product class will look like. 

    public class Product implements Serializable
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