Реализация customviewadpter

Question

Я сделал список с изображениями и некоторым текстом. Я пытаюсь открыть новое действие для каждого элемента, который нажал. Однако такое же действие открывается всегда независимо от того, какой элемент был нажат. Вот код

MainActivity.java

public class Dslr extends Activity implements OnItemClickListener 
{ 
    public static final String[] titles=new String[]{"Nikon D3300","Canon EOS 1200D","C","D"}; 
    public static final String[] Descriptions=new String[]{"The Nikon D3300 is the latest entry-level model to Nikon's series: an affordable and well-balanced choice to introduce you to the world of DSLR.","The Canon EOS 1200D might be a safe replacement of the nearly four-year-old 1100D model, but it holds enough weight to keep the entry-level DSLR market bubbling along.","nnvnv","ggs"}; 
    public static final Integer[] images={ R.drawable.d1,R.drawable.d2,R.drawable.s11,R.drawable.s2}; 

ListView listView; 
List<RowItem> rowItems; 
Button back; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_dslr); 
back=(Button)findViewById(R.id.button3); 
back.setOnClickListener(new View.OnClickListener() { 

    @Override 
    public void onClick(View v) { 
     // TODO Auto-generated method stub 
     Intent s=new Intent(getApplicationContext(),M.class); 
     startActivity(s); 
     } 
}); 

rowItems = new ArrayList<RowItem>(); 
    for (int i = 0; i < titles.length; i++) { 
    RowItem item = new RowItem(images[i], titles[i], Descriptions[i]); 
    rowItems.add(item); 
    } 
    listView=(ListView)findViewById(R.id.list); 
    CustomListViewAdapter adapter=new CustomListViewAdapter(this,R.layout.list_item,rowItems); 
    listView.setAdapter(adapter); 
    listView.setOnItemClickListener(this); 

} 

    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position,long id) 
    { switch(position) 
     { 
    case 0: Intent i=new Intent(getApplicationContext(),D.class); 
      startActivity(i); 
    case 1:Intent b=new Intent(getApplicationContext(),D_1.class); 
      startActivity(b); 
    case 2: Intent z=new Intent(getApplicationContext(),D.class); 
    startActivity(z); 
     } 

} 
    } 

    D.java 

public class D extends Activity { 

Button buy,back; 
ImageView iv; 
TextView t1; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_d); 
     iv=(ImageView)findViewById(R.id.imageView1); 
     iv.setScaleType(ScaleType.FIT_XY); 
     t1=(TextView)findViewById(R.id.textView1); 

     t1.setMovementMethod(new ScrollingMovementMethod()); 

     buy=(Button)findViewById(R.id.button1); 
     buy.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       Uri uri = Uri.parse("https://www.google.co.in/aclk?sa=L&ai=CoF1Zol9ZVtzADciuoAP57pvIDfDzl6cL0MSdhLsCuI6-3rwDCAQQAigFYOXC5IOkDsgBB6oEJE_QiSIJrNnjAN5b8R-9M8Ju79TsseUlGme7UcNxXdnFBBkwlMAFBaAGJoAH2KTjTpAHA6gHpr4b2AcB4BL88bWn1rDTp6YB&sig=AOD64_3x0dFtyFndnyF_-tFHuIrwp4DQtQ&ctype=5&clui=5&q=&ved=0ahUKEwi1xoHc07LJAhXRH44KHZv3BL0Qww8IJQ&adurl=http://5231.xg4ken.com/trk/v1%3Fprof%3D435%26camp%3D92%26affcode%3Dpg19701%26kct%3Dgoogle%26kchid%3D6215386675%26cid%3D84519575488%26networkType%3Dsearch%26kdv%3Dc%26kpid%3DB00KBI7ANQ%26kmc%3D105201768%26criteriaid%3Dkwd-119383492408%26adgroupid%3D22913451688%26campaignid%3D336119728%26locphy%3D9061721%26adpos%3D1o2%26url%3Dhttp://www.amazon.in/Nikon-D3200-24-2MP-Digital-18-55mm/dp/B00KBI7ANQ%3Ftag%3Dgooginhydr18418%26tag%3Dgooginkenshoo-21%26ascsubtag%3D_kenshoo_clickid_"); // missing 'http://' will cause crashed 
       Intent intent = new Intent(Intent.ACTION_VIEW, uri); 
       startActivity(intent); 

      } 
     }); 
     back=(Button)findViewById(R.id.button2); 
     back.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       Intent b=new Intent(getApplicationContext(),Dslr.class); 
       startActivity(b); 
      } 
     }); 



    } 

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

D_1.java 

public class D_1 extends Activity { 
ImageView d; 
TextView t2; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_d_1); 
     d=(ImageView)findViewById(R.id.imageView_d_1); 
     d.setScaleType(ScaleType.FIT_XY); 
     t2=(TextView)findViewById(R.id.textView_d_1); 
     t2.setMovementMethod(new ScrollingMovementMethod()); 

    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.d_1, 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(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 
} 

Answer 1

Ее просто потому, что ваш switch case оператор продолжает выполнение, так как нет написано break заявление:

switch (position) { 
    case 0: Intent i=new Intent(getApplicationContext(),D.class); 
      startActivity(i); 
      break; 
    case 1: Intent b=new Intent(getApplicationContext(),D_1.class); 
      startActivity(b); 
      break; 
    case 2: Intent z=new Intent(getApplicationContext(),D.class); 
      startActivity(z); 
      break; 
     }