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POSelect an item inside listview adapter android
 

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  1. POSelect an item inside listview adapter android
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    <p>In my main activity i called an object write a method itemClicked().</p> <pre><code>public void itemClicked(){ System.out.println("Clicked"); efficienadapter.notifyDataSetChanged(); } </code></pre> <p>I am trying to print Clicked item when i select a row from my listview. Note: I am using a listadapter called EfficientAdapter.</p> <p>Here is the adapter:</p> <pre><code> public class EfficientAdapter extends BaseAdapter { private Activity activity; private ArrayList&lt;ComptePost&gt; data; private static LayoutInflater inflater = null; public ImageLoader imageLoader; public Boolean isActusAstuce; public static int flag = 0, counter=0; NVirementEmmeteur main; int num=0; ViewHolder holder; static String src; public EfficientAdapter(Activity a, ArrayList&lt;ComptePost&gt; d) { activity = a; data = d; inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); // imageLoader = new ImageLoader(activity.getApplicationContext()); imageLoader=new ImageLoader(activity.getApplicationContext()); } public EfficientAdapter(NVirementEmmeteur m) { main=m; } @Override public int getCount() { return data.toArray().length; } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return position; } public static class ViewHolder { public TextView one; public TextView two; public TextView three; public ImageView image; public RelativeLayout relative; } @Override public View getView(final int position, View convertView, ViewGroup parent) { View vi = convertView; if (convertView == null) { vi = inflater.inflate(R.layout.single_item, null); holder = new ViewHolder(); holder.one = (TextView) vi.findViewById(R.id.text_view_one); holder.image = (ImageView)vi.findViewById(R.id.imageView1); holder.relative = (Relativelayout)vi.findViewById(R.id.relative); vi.setTag(holder); } else holder = (ViewHolder) vi.getTag(); holder.one.setTextColor(Color.WHITE); holder.one.setText("Compte No."+data.get(position).getNumComtpe()); holder.image.setVisibility(View.GONE); holder.relative_layout.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub v.findViewById(R.id.imageView1).setVisibility(View.VISIBLE); main.itemClicked(); } }); //flag=0; only first row become white return vi; } i used main.itemClicked() to print "Clicked". holder.relative_layout.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub v.findViewById(R.id.imageView1).setVisibility(View.VISIBLE); main.itemClicked(); } }); </code></pre> <p>but when i select a row item i got this error.</p> <pre><code>04-10 14:21:43.832: W/dalvikvm(4985): threadid=1: thread exiting with uncaught exception (group=0x40015578) 04-10 14:21:43.847: E/AndroidRuntime(4985): FATAL EXCEPTION: main 04-10 14:21:43.847: E/AndroidRuntime(4985): java.lang.NullPointerException 04-10 14:21:43.847: E/AndroidRuntime(4985): at .EfficientAdapter$1.onClick(EfficientAdapter.java:111) 04-10 14:21:43.847: E/AndroidRuntime(4985): at android.view.View.performClick(View.java:2538) 04-10 14:21:43.847: E/AndroidRuntime(4985): at android.view.View$PerformClick.run(View.java:9152) 04-10 14:21:43.847: E/AndroidRuntime(4985): at android.os.Handler.handleCallback(Handler.java:587) 04-10 14:21:43.847: E/AndroidRuntime(4985): at android.os.Handler.dispatchMessage(Handler.java:92) 04-10 14:21:43.847: E/AndroidRuntime(4985): at android.os.Looper.loop(Looper.java:130) 04-10 14:21:43.847: E/AndroidRuntime(4985): at android.app.ActivityThread.main(ActivityThread.java:3687) 04-10 14:21:43.847: E/AndroidRuntime(4985): at java.lang.reflect.Method.invokeNative(Native Method) 04-10 14:21:43.847: E/AndroidRuntime(4985): at java.lang.reflect.Method.invoke(Method.java:507) 04-10 14:21:43.847: E/AndroidRuntime(4985): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 04-10 14:21:43.847: E/AndroidRuntime(4985): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 04-10 14:21:43.847: E/AndroidRuntime(4985): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>where am i mistaken ?</p>
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    1. PO
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    1. This table or related slice is empty.
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    1. USyakusha
    1. USyakusha
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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      1. This table or related slice is empty.
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    2. VO
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    1. COnot what i am looking for :(
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      1. POSelect an item inside listview adapter android
      1. USyakusha
    2. COnope i think my constructor is the guilty " NVirementEmmeteur main;"
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      1. POSelect an item inside listview adapter android
      1. USyakusha
    3. COyou have add click listnet on vi mean on convertView insted of use itemclick for difftent item like i given above or use perent layout click which is in R.layout.single_item. if you have linear layout then use linearlayout.onitemclick....
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      1. POSelect an item inside listview adapter android
      1. USDhawal Sodha Parmar
 

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