我将项目及其详细信息存储在 sqlite 中，并显示项目的图像以及我正在使用的项目名称
private void getDataAndPopulate()
{
Cursor cursor = getEvents("bcuk_book");
while (cursor.moveToNext())
{
String temp_id = cursor.getString(0);
final String temp_name = cursor.getString(1);
String temp_author=cursor.getString(2);
String temp_desc=cursor.getString(3);
byte[] temp_image = cursor.getBlob(4);
String temp_rating = cursor.getString(5);
String temp_price = cursor.getString(6);
String temp_update=cursor.getString(7);
mapId.add(temp_id);
mapName.add(temp_name);
mapAuthor.add(temp_author);
mapDesc.add(temp_desc);
mapRating.add(temp_rating);
mapPrice.add(temp_price);
map.add(temp_image);
mapUpdated.add(temp_update);
Log.e("temp_id from the sqlite", temp_id);
Log.i(temp_name, temp_name);
Log.i(temp_desc, temp_desc);
Log.i(temp_rating, temp_rating);
Log.e(temp_update,temp_update);
String[] captionArray = (String[]) mapName.toArray(new String[mapName.size()]);
itemsAdapter = new ItemsAdapter(
Bookicon.this, R.layout.item,captionArray);
gridView=(GridView)findViewById(R.id.list);
gridView.setAdapter(itemsAdapter);
gridView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
Intent i = new Intent(getApplicationContext(), DetailsActivity.class);
i.putExtra("id", position);
startActivity(i);
}
});
}
}
我的 Items 适配器类是::
private class ItemsAdapter extends BaseAdapter implements ListAdapter
{
String[] items;
public ItemsAdapter(Context context,int textViewResourceId,String[] items)
{
this.items = items;
}
public View getView( int POSITION, View convertView,ViewGroup parent)
{
TextView cap = null ;
View view = convertView;
ImageView img = null;
if (view == null)
{
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = vi.inflate(R.layout.item, null);
}
img = (ImageView) view.findViewById(R.id.image);
Log.i("iiiiii","iiiii");
cap = (TextView) view.findViewById(R.id.caption);
System.err.println("Position of the book is "+mapName.get(POSITION));
bookTitle=mapName.get(POSITION);
System.err.println("title of the book is "+bookTitle);
cap.setText(mapName.get(POSITION));
img.setImageBitmap(BitmapFactory.decodeByteArray(map.get(POSITION), 0, map.get(POSITION).length));
return view;
}
public int getCount()
{
return items.length;
}
public Object getItem(int position)
{
return position;
}
public long getItemId(int position)
{
return position;
}
}
显示时的错误是::
12-21 10:12:28.792: W/dalvikvm(741): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
12-21 10:12:28.842: E/AndroidRuntime(741): FATAL EXCEPTION: main
12-21 10:12:28.842: E/AndroidRuntime(741): java.lang.IndexOutOfBoundsException: Invalid index 56, size is 56
12-21 10:12:28.842: E/AndroidRuntime(741): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
12-21 10:12:28.842: E/AndroidRuntime(741): at java.util.ArrayList.get(ArrayList.java:304)
12-21 10:12:28.842: E/AndroidRuntime(741): at com.books.bcukbook.Bookicon$ItemsAdapter.getView(Bookicon.java:254)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.AbsListView.obtainView(AbsListView.java:2012)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.makeAndAddView(GridView.java:1323)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.makeRow(GridView.java:328)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.moveSelection(GridView.java:885)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.layoutChildren(GridView.java:1230)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.setSelectionInt(GridView.java:1476)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.arrowScroll(GridView.java:1729)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.commonKey(GridView.java:1543)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.widget.GridView.onKeyDown(GridView.java:1494)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.KeyEvent.dispatch(KeyEvent.java:2551)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.View.dispatchKeyEvent(View.java:5500)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1242)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
12-21 10:12:28.842: E/AndroidRuntime(741): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1879)
12-21 10:12:28.842: E/AndroidRuntime(741): at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1361)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.app.Activity.dispatchKeyEvent(Activity.java:2324)
12-21 10:12:28.842: E/AndroidRuntime(741): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1806)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3327)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewRootImpl.handleFinishedEvent(ViewRootImpl.java:3300)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2460)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.os.Handler.dispatchMessage(Handler.java:99)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.os.Looper.loop(Looper.java:137)
12-21 10:12:28.842: E/AndroidRuntime(741): at android.app.ActivityThread.main(ActivityThread.java:4424)
12-21 10:12:28.842: E/AndroidRuntime(741): at java.lang.reflect.Method.invokeNative(Native Method)
12-21 10:12:28.842: E/AndroidRuntime(741): at java.lang.reflect.Method.invoke(Method.java:511)
12-21 10:12:28.842: E/AndroidRuntime(741): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
12-21 10:12:28.842: E/AndroidRuntime(741): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
12-21 10:12:28.842: E/AndroidRuntime(741): at dalvik.system.NativeStart.main(Native Method)
代码的结果显示如下
