Hi, I am new to android, my application keeps crashing with the following errors. I am using API Level 15.
`01-26 19:50:45.820: E/AndroidRuntime(963): FATAL EXCEPTION: main 01-26 19:50:45.820: E/AndroidRuntime(963): java.lang.NullPointerException 01-26 19:50:45.820: E/AndroidRuntime(963): at my.grid.view.DataAdapter.getView(DataAdapter.java:62) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.AbsListView.obtainView(AbsListView.java:2012) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.makeAndAddView(GridView.java:1323) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.makeRow(GridView.java:328) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.moveSelection(GridView.java:885) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.layoutChildren(GridView.java:1230) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.setSelectionInt(GridView.java:1476) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.arrowScroll(GridView.java:1729) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.commonKey(GridView.java:1543) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.widget.GridView.onKeyDown(GridView.java:1494) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.KeyEvent.dispatch(KeyEvent.java:2551) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.View.dispatchKeyEvent(View.java:5500) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1242) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246) 01-26 19:50:45.820: E/AndroidRuntime(963): at com.android.internal.policy.impl.PhoneWindow $DecorView.superDispatchKeyEvent(PhoneWindow.java:1879) 01-26 19:50:45.820: E/AndroidRuntime(963): at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java: 1361) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.app.Activity.dispatchKeyEvent(Activity.java:2324) 01-26 19:50:45.820: E/AndroidRuntime(963): at com.android.internal.policy.impl.PhoneWindow $DecorView.dispatchKeyEvent(PhoneWindow.java:1806) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java: 3327) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewRootImpl.handleFinishedEvent(ViewRootImpl.java: 3300) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2460) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.os.Handler.dispatchMessage(Handler.java:99) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.os.Looper.loop(Looper.java:137) 01-26 19:50:45.820: E/AndroidRuntime(963): at android.app.ActivityThread.main(ActivityThread.java:4424) 01-26 19:50:45.820: E/AndroidRuntime(963): at java.lang.reflect.Method.invokeNative(Native Method) 01-26 19:50:45.820: E/AndroidRuntime(963): at java.lang.reflect.Method.invoke(Method.java:511) 01-26 19:50:45.820: E/AndroidRuntime(963): at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:784) 01-26 19:50:45.820: E/AndroidRuntime(963): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 01-26 19:50:45.820: E/AndroidRuntime(963): at dalvik.system.NativeStart.main(Native Method)` main.xml -------- ` <?xml version="1.0" encoding="utf-8"?> <GridView xmlns:android="http://schemas.android.com/apk/res/android"; android:id="@+id/gridview" android:stretchMode="columnWidth" android:cacheColorHint="#00000000" android:layout_width="fill_parent" android:layout_height="fill_parent" android:numColumns="1" android:clipChildren="true" android:horizontalSpacing="3dip" android:verticalSpacing="3dip" />` customgrid.xml -------------- ` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"; android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <TableLayout android:id="@+id/TableLayout01" android:layout_height="wrap_content" android:layout_width="fill_parent"> <TableRow android:id="@+id/TableRow01" android:layout_height="wrap_content" android:layout_width="wrap_content"> <TextView android:text="@string/hello" android:layout_width="100dp" android:layout_height="15dp" android:textSize="12dp" android:id="@+id/txtName" /> <TextView android:text="@string/hello" android:layout_width="35dp" android:layout_height="15dp" android:textSize="12dp" android:id="@+id/txtId" /> <TextView android:text="@string/hello" android:layout_width="70dp" android:layout_height="15dp" android:textSize="12dp" android:id="@+id/txtRate" /> </TableRow> </TableLayout> </LinearLayout>` GridViewDataActivity.java ------------------------- `import android.app.Activity; import android.os.Bundle; import android.widget.GridView; ` `public class GridViewDataActivity extends Activity { @Override public void onCreate( Bundle savedInstanceState ) { super.onCreate(savedInstanceState); setContentView(R.layout.main); GridView gridview = (GridView) findViewById(R.id.gridview); gridview.setAdapter(new DataAdapter(this)); } }` DataAdapter.java ---------------- `import android.content.Context; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; ` ` public class DataAdapter extends BaseAdapter { Context mContext; private String[] name = { "Rohit", "Rahul", "Ravi", "Amit", "Arun", "Anil", "Kashif", "Rohit1", "Rahul1", "Ravi1", "Amit1", "Arun1", "Anil1", "Kashif1", "Rohit2", "Rahul2", "Ravi2", "Amit2", "Arun2", "Anil2", "Kashif2" }; private String[] id = { "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S0011", "S0021", "S0031", "S0041", "S0051", "S0061", "S0071", "S0012", "S0022", "S0032", "S0042", "S0052", "S0062", "S0072" }; private String[] rate = { "2500.00", "3500.00", "1000.00", "500.00", "9000.00", "10000.00", "5000.00", "12500.00", "13500.00", "11000.00", "1500.00", "19000.00", "110000.00", "15000.00", "22500.00", "23500.00", "21000.00", "2500.00", "29000.00", "210000.00", "25000.00" }; private LayoutInflater mInflater; public DataAdapter( Context c ) { mContext = c; mInflater = LayoutInflater.from(c); } public int getCount() { return id.length; } public Object getItem( int position ) { return position; } public long getItemId( int position ) { return position; } public View getView( int position, View convertView, ViewGroup parent ) { ViewHolder holder = null; if (convertView == null) { convertView = mInflater.inflate(R.layout.customgrid, parent, false); holder = new ViewHolder(); holder.txtName = (TextView) convertView.findViewById(R.id.txtName); holder.txtName.setGravity(Gravity.LEFT); holder.txtId = (TextView) convertView.findViewById(R.id.txtId); holder.txtId.setGravity(Gravity.LEFT); holder.txtRate = (TextView) convertView.findViewById(R.id.txtRate); holder.txtRate.setGravity(Gravity.RIGHT); if (position == 0) { convertView.setTag(holder); } } else { holder = (ViewHolder) convertView.getTag(); } /******************************************/ /*** This line is giving the problem *****/ /******************************************/ holder.txtName.setText(name[position]); holder.txtId.setText(id[position]); holder.txtRate.setText(rate[position]); return convertView; } static class ViewHolder { TextView txtName; TextView txtId; TextView txtRate; } }` Any idea what is causing the problem? Regards Sudheer -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
