所以，我的应用程序通过SQLite使用blob保存图像。我的应用按预期运行，并将数据显示为listView到cursorAdaptor和bindView方法。
但是，如果我在我的设备中保存了一些图像，可能是我的相机拍摄并保存在本地，我的应用程序在尝试在listview中显示该列表项时崩溃了。它显示所有其他列表项，如果该行在屏幕中不可见，并且在向下滚动列表时将崩溃。
可能原因：图像文件大小超过400kb
FATAL EXCEPTION: main
Process: com.agoogler.rafi.inventory10, PID: 29622
java.lang.IllegalStateException: Couldn't read row 0, col 0 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.database.CursorWindow.nativeGetLong(Native Method)
at android.database.CursorWindow.getLong(CursorWindow.java:524)
at android.database.AbstractWindowedCursor.getLong(AbstractWindowedCursor.java:75)
at android.database.CursorWrapper.getLong(CursorWrapper.java:127)
at android.widget.CursorAdapter.getItemId(CursorAdapter.java:259)
at android.widget.AbsListView$RecycleBin.retrieveFromScrap(AbsListView.java:10185)
at android.widget.AbsListView$RecycleBin.getScrapView(AbsListView.java:9894)
at android.widget.AbsListView.obtainView(AbsListView.java:3234)
at android.widget.ListView.makeAndAddView(ListView.java:2147)
at android.widget.ListView.fillDown(ListView.java:767)
at android.widget.ListView.fillGap(ListView.java:731)
at android.widget.AbsListView.trackMotionScroll(AbsListView.java:8293)
at android.widget.ListView.trackMotionScroll(ListView.java:2065)
at android.widget.AbsListView.scrollIfNeeded(AbsListView.java:4905)
at android.widget.AbsListView.startScrollIfNeeded(AbsListView.java:4833)
at android.widget.AbsListView.onTouchMove(AbsListView.java:6648)
at android.widget.AbsListView.onTouchEvent(AbsListView.java:6492)
at android.widget.ListView.onTouchEvent(ListView.java:1648)
at android.view.View.dispatchTouchEvent(View.java:10723)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2859)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2535)
at android.widget.AbsListView.dispatchTouchEvent(AbsListView.java:6401)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2865)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2550)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2865)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2550)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2865)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2550)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2865)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2550)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2865)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2550)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2865)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2550)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:559)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1870)
at android.app.Activity.dispatchTouchEvent(Activity.java:3236)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:71)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:71)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:521)
at android.view.View.dispatchPointerEvent(View.java:10952)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:5117)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4969)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4500)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4553)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4519)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4652)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4527)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4709)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4500)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4553)
06-30 18:22:34.950 29622-29622/com.agoogler.rafi.inventory10 E/AndroidRuntime: at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4519)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4527)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4500)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:7007)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6936)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6897)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:7117)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:176)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:7081)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:7144)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:927)
at android.view.Choreographer.doCallbacks(Choreographer.java:702)
at android.view.Choreographer.doFrame(Choreographer.java:632)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:913)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
CursorAdapter类
public class InventoryCursorAdapter extends CursorAdapter {
Context mcontext;
/**
* Constructs a new {@link InventoryCursorAdapter}.
*
* @param context The context
* @param c The cursor from which to get the data.
*/
public InventoryCursorAdapter(Context context, Cursor c) {
super(context, c, 0 /* flags */);
mcontext = context;
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
// Inflate a list item view using the layout specified in list_item.xml
return LayoutInflater.from(context).inflate(R.layout.list_item, parent, false);
}
@Override
public void bindView(View view, Context context, final Cursor cursor) {
// Find individual views that we want to modify in the list item layout
TextView nameTextView = (TextView) view.findViewById(R.id.name);
TextView quanTextView = (TextView) view.findViewById(quantity);
TextView quanText = (TextView) view.findViewById(quantitytext);
ImageView imageView = (ImageView) view.findViewById(R.id.photo_image_view);
Button button = (Button) view.findViewById(R.id.button);
int idColumnIndex = cursor.getColumnIndex(_ID);
Long id = cursor.getLong(idColumnIndex);
button.setTag(id); // tagging the button of the list item with the row id of the data item
Log.d("test id of the row", String.valueOf(id));
// Find the columns of pet attributes that we're interested in
int nameColumnIndex = cursor.getColumnIndex(COLUMN_PRO_NAME);
int priceColumnIndex = cursor.getColumnIndex(COLUMN_PRO_PRICE);
int quanColumnIndex = cursor.getColumnIndex(COLUMN_PRO_QUAN);
int supColumnIndex = cursor.getColumnIndex(COLUMN_PRO_SUP);
int imageColumnIndex = cursor.getColumnIndex(COLUMN_IMAGE);
// Read the pet attributes from the Cursor for the current inventory
String invName = cursor.getString(nameColumnIndex);
String price = cursor.getString(priceColumnIndex);
String quantity = cursor.getString(quanColumnIndex);
String supplier = cursor.getString(supColumnIndex);
Bitmap image = Utility.getImage(cursor.getBlob(imageColumnIndex));
if (TextUtils.isEmpty(invName)) {
invName = context.getString(R.string.unknown_name);
}
// Update the TextViews with the attributes for the current pet
nameTextView.setText(invName);
quanTextView.setText(quantity);
if (Integer.parseInt(quantity) <= 3) {
quanTextView.setTextColor(ContextCompat.getColor(mcontext, R.color.red));
quanText.setTextColor(ContextCompat.getColor(mcontext, R.color.red));
}
if (image != null)
imageView.setImageBitmap(image);
Button clickButton = (Button) view.findViewById(R.id.button);
clickButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("test", "Button onclick executing");
long id = (Long) v.getTag(); // getting the tag of the button
Log.d("test id of button tag", String.valueOf(id));
Uri currentInvUri = ContentUris.withAppendedId(CONTENT_URI, id);
String[] projection = {
_ID,
COLUMN_PRO_NAME, COLUMN_PRO_SUP, COLUMN_PRO_QUAN,
COLUMN_PRO_PRICE,COLUMN_IMAGE};
Cursor cursor1 = mcontext.getContentResolver().query(currentInvUri, projection, null, null, null);
int quanColumnIndex = cursor1.getColumnIndex(COLUMN_PRO_QUAN);
cursor1.moveToFirst();
int quantity = cursor1.getInt(quanColumnIndex);
ContentValues values = new ContentValues();
if (quantity == 0) {
values.put(COLUMN_PRO_QUAN, quantity);
String textToShow = "Cannot complete sale";
Toast.makeText(mcontext, textToShow, Toast.LENGTH_SHORT).show();
} else {
values.put(COLUMN_PRO_QUAN, --quantity);
}
int rowsAffected = mcontext.getContentResolver().update(currentInvUri, values, null, null);
if (rowsAffected == 0) {
Log.i("test", "0 rows updated");
} else {
Log.i("test", " rows updated");
}
}
});
}
}