显示项目名称以及存储在sqlite for android中的图像时出现问题_Android_Sqlite

显示项目名称以及存储在sqlite for android中的图像时出现问题

android sqlite

显示项目名称以及存储在sqlite for android中的图像时出现问题,android,sqlite,Android,Sqlite,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);

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);
                    }
                });
        }   
        }

显示时的错误为：：

       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

在您的第一个代码块中，您需要在设置

网格视图之前关闭while
循环，如下代码所示：
 private void getDataAndPopulate() 
       {
         //assuing that they are not null at this point..
         mapId.clear();
         mapName.clear();
         mapAuthor.clear();
         mapDesc.clear();
         mapRating.clear();
         mapPrice.clear();
         map.clear();
         mapUpdated.clear();

        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);
          }//this would close the while loop

                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);
                    }
                });

        } 

private void getDataAndPopulate（）
{
//假设此时它们不是空的。。
mapId.clear（）；
mapName.clear（）；
mapAuthor.clear（）；
mapDesc.clear（）；
mapRating.clear（）；
mapPrice.clear（）；
map.clear（）；
mapdated.clear（）；
游标=获取事件（“bcuk_书”）；
while（cursor.moveToNext（））
{
String temp_id=cursor.getString（0）；
最终字符串temp_name=cursor.getString（1）；
String temp_author=cursor.getString（2）；
String temp_desc=cursor.getString（3）；
字节[]temp_image=cursor.getBlob（4）；
String temp_rating=cursor.getString（5）；
String temp_price=cursor.getString（6）；
String temp_update=cursor.getString（7）；
添加映射id（临时id）；
mapName.add（临时名称）；
添加（临时作者）；
地图描述添加（临时描述）；
添加（温度等级）；
mapPrice.add（临时价格）；
添加地图（临时图像）；
地图更新。添加（临时更新）；
Log.e（“来自sqlite的临时id”，临时id）；
Log.i（临时名称、临时名称）；
日志i（临时说明、临时说明）；
日志i（温度等级、温度等级）；
Log.e（临时更新，临时更新）；
}//这将关闭while循环
字符串[]captionArray=（字符串[]）mapName.toArray（新字符串[mapName.size（）]）；
itemsAdapter=新的itemsAdapter(
Bookicon.this，R.layout.item，captionArray）；
gridView=（gridView）findViewById（R.id.list）；
setAdapter（itemsAdapter）；
setOnItemClickListener（新的OnItemClickListener（）{
public void onItemClick（AdapterView父视图、视图v、整型位置、长id）
{
Intent i=新的Intent（getApplicationContext（），DetailsActivity.class）；
i、 putExtra（“id”，位置）；
星触觉（i）；
}
});
} 

在进入while
循环之前，请清除所有列表
假设您使用的是ArrayList
，则在进入while循环之前，我必须更新代码以清除列表数据
 private void getDataAndPopulate() 
       {
         //assuing that they are not null at this point..
         mapId.clear();
         mapName.clear();
         mapAuthor.clear();
         mapDesc.clear();
         mapRating.clear();
         mapPrice.clear();
         map.clear();
         mapUpdated.clear();

        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);
          }//this would close the while loop

                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);
                    }
                });

        }