我有一个活动，它显示用户信息并使用图像编辑用户信息。当我第一次尝试更改图像时，活动恢复。如果我第二次更改图像，活动不会恢复，它会给出一个 staledata 异常，下面是代码和日志。
日志：
01-03 17:44:23.539: E/AndroidRuntime(30754): FATAL EXCEPTION: main
01-03 17:44:23.539: E/AndroidRuntime(30754): java.lang.RuntimeException: Unable to resume activity {com.globalnest.event/com.globalnest.event.LeadDetails}: android.database.StaleDataException: Attempted to access a cursor after it has been closed.
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2471)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2499)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1184)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.os.Handler.dispatchMessage(Handler.java:99)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.os.Looper.loop(Looper.java:137)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.ActivityThread.main(ActivityThread.java:4448)
01-03 17:44:23.539: E/AndroidRuntime(30754): at java.lang.reflect.Method.invokeNative(Native Method)
01-03 17:44:23.539: E/AndroidRuntime(30754): at java.lang.reflect.Method.invoke(Method.java:511)
01-03 17:44:23.539: E/AndroidRuntime(30754): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
01-03 17:44:23.539: E/AndroidRuntime(30754): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
01-03 17:44:23.539: E/AndroidRuntime(30754): at dalvik.system.NativeStart.main(Native Method)
01-03 17:44:23.539: E/AndroidRuntime(30754): Caused by: android.database.StaleDataException: Attempted to access a cursor after it has been closed.
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.database.BulkCursorToCursorAdaptor.throwIfCursorIsClosed(BulkCursorToCursorAdaptor.java:75)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.database.BulkCursorToCursorAdaptor.requery(BulkCursorToCursorAdaptor.java:144)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.database.CursorWrapper.requery(CursorWrapper.java:186)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.Activity.performRestart(Activity.java:4505)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.Activity.performResume(Activity.java:4531)
01-03 17:44:23.539: E/AndroidRuntime(30754): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2461)
01-03 17:44:23.539: E/AndroidRuntime(30754): ... 10 more
源代码：
setcur=db.rawQuery("select * from LeadDetails where QR_ID='"+ATID+"' and EventID='"+EventID+"' and UserID='"+dbUserID+"'", null);
this.startManagingCursor(setcur);
if(setcur!=null&&setcur.getCount()!=0){
setcur.moveToFirst();
LeadID=setcur.getString(setcur.getColumnIndex("_id"));
fname.setText(setcur.getString(setcur.getColumnIndex("FirstName")));
lname.setText(setcur.getString(setcur.getColumnIndex("LastName")));
company.setText(setcur.getString(setcur.getColumnIndex("Company")));
pno.setText(setcur.getString((setcur.getColumnIndex("PhoneNumber"))));
email.setText(setcur.getString(setcur.getColumnIndex("EmailID")));
city.setText(setcur.getString(setcur.getColumnIndex("City")));
state.setText(setcur.getString(setcur.getColumnIndex("State")));
notes.setText(setcur.getString(setcur.getColumnIndex("Notes")));
String fwldateandtime=setcur.getString(setcur.getColumnIndex("FollowUpDate"));
System.out.println("the date is "+fwldateandtime);
if(fwldateandtime.equals("null")||fwldateandtime.equals(" ") ||fwldateandtime.equals("") ){
fwldate.setText("");
fwltime.setText("");
}else{
String[] temp = fwldateandtime.split(" ");
System.out.println("the temp is "+temp);
SimpleDateFormat f1 = new SimpleDateFormat("hh:mm a");
SimpleDateFormat f2 = new SimpleDateFormat("hh:mm:ss");
SimpleDateFormat f4 = new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat f3 = new SimpleDateFormat("yyyy-MM-dd");
String time="",date="";
try {
Date d1 = f4.parse(temp[0]);
date = f3.format(d1);
if(temp[1].equals("00:00:00")){
time="";
}else{
Date d = f2.parse(temp[1]);
time = f1.format(d);
System.out.println("The time is "+time+" the object is "+d+"the date is to be"+date+"the temp"+temp[0]);
}
fwltime.setText(time);
fwldate.setText(date);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
fwltime.setText(time);
fwldate.setText(date);
}
String values = email.getText().toString();
System.out.println("the values is "+values);
if(values.equals("")||values.equals("null")){
email.setEnabled(true);
}else{
email.setEnabled(false);
}
title.setText(setcur.getString(setcur.getColumnIndex("Title")));
ImageView iv=(ImageView) findViewById(R.id.leadimage);
String imgloc=setcur.getString(setcur.getColumnIndex("ImageURL"));
ftypes=NullChecker(setcur.getString(setcur.getColumnIndex("FollowUPTypes")));
types="";
System.out.println("the followuptypes are"+ftypes);
SetImage();
String rate=setcur.getString(setcur.getColumnIndex("Rating"));
float f;
if(rate.equals("null")){
f = Float.valueOf("0").floatValue();
}else
f = Float.valueOf(rate).floatValue();
System.out.println("the values for rating is "+f);
rating.setRating(f);
String sa1=setcur.getString(setcur.getColumnIndex("SurveyQ1Answer"));
String sa=setcur.getString(setcur.getColumnIndex("SurveyQ2Answer"));
String sa3=setcur.getString(setcur.getColumnIndex("SurveyQ3Answer"));
}else{
email.setEnabled(true);
}
//c.close();
setcur1 = db.rawQuery("select * from EventDetails where EventID='"+EventID+"'", null);
this.startManagingCursor(setcur1);
setcur1.moveToFirst();
TextView ename=(TextView) findViewById(R.id.textView1);
ename.setText(setcur1.getString(setcur1.getColumnIndex("EventName")));
//c1.close();
//db.close();
}
/// 设置图像方法
public void SetImage(){
String Imagedata=null;
StringBuilder stringBuilder = new StringBuilder();
FileInputStream fin;
try {
InputStream isr = openFileInput(ATID+dbUserID);
InputStreamReader inputStreamReader = new InputStreamReader(isr);
BufferedReader inRd = new BufferedReader(inputStreamReader);
String receiveString = "";
while ( (receiveString = inRd.readLine()) != null ) {
stringBuilder.append(receiveString);
}
System.out.println("the base64 value is "+stringBuilder);
byte[] decodedString = Base64.decode(stringBuilder.toString(), Base64.DEFAULT);
Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
LeadImage.setImageBitmap(decodedByte);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(stringBuilder.toString()==null||stringBuilder.toString().equals("null")||stringBuilder.toString().equals("")){
LeadImage.setImageResource(R.drawable.durga);
}
}
// ALert show 当用户点击图片时显示警报
public void AlertShow(){
final String [] items = new String [] {"Take from camera", "Select from gallery"};
ArrayAdapter<String> adapter = new ArrayAdapter<String> (this, android.R.layout.select_dialog_item,items);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select Image");
builder.setAdapter( adapter, new DialogInterface.OnClickListener() {
public void onClick( DialogInterface dialog, int item ) { //pick from camera
if (item == 0) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),
"tmp_avatar_" + String.valueOf(System.currentTimeMillis()) + ".jpg"));
System.out.println("the values are "+mImageCaptureUri);
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
try {
intent.putExtra("return-data", true);
startActivityForResult(intent, PICK_FROM_CAMERA);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
} else {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE);
}
}
});
final AlertDialog dialog = builder.create();
dialog.show();
}
// 之后的结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK) return;
switch (requestCode) {
case PICK_FROM_CAMERA:
doCrop();
break;
case PICK_FROM_FILE:
mImageCaptureUri = data.getData();
doCrop();
break;
case CROP_FROM_CAMERA:
Bundle extras = data.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
LeadImage.setImageBitmap(photo);
ByteArrayOutputStream blob = new ByteArrayOutputStream();
photo.compress(CompressFormat.JPEG, 100 , blob);
byte[] bitmapdata = blob.toByteArray();
encodedImage = Base64.encodeToString(bitmapdata, Base64.DEFAULT);
FileOutputStream fos;
try {
fos = openFileOutput(ATID+dbUserID, Context.MODE_PRIVATE);
fos.write(encodedImage.getBytes());
fos.close();
System.out.println("the file name is "+ATID);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
File f = new File(mImageCaptureUri.getPath());
System.out.println("the path is "+f.getAbsolutePath());
f.delete();
int id=getLastImageId();
removeImage(id);
break;
}
}
//裁剪方法
private void doCrop() {
final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setType("image/*");
List<ResolveInfo> list = getPackageManager().queryIntentActivities( intent, 0 );
int size = list.size();
if (size == 0) {
Toast.makeText(this, "Can not find image crop app", Toast.LENGTH_SHORT).show();
return;
} else {
intent.setData(mImageCaptureUri);
intent.putExtra("outputX", 90);
intent.putExtra("outputY", 90);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
if (size == 1) {
Intent i = new Intent(intent);
ResolveInfo res = list.get(0);
i.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
startActivityForResult(i, CROP_FROM_CAMERA);
} else {
for (ResolveInfo res : list) {
final CropOption co = new CropOption();
co.title = getPackageManager().getApplicationLabel(res.activityInfo.applicationInfo);
co.icon = getPackageManager().getApplicationIcon(res.activityInfo.applicationInfo);
co.appIntent= new Intent(intent);
co.appIntent.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
cropOptions.add(co);
}
CropOptionAdapter adapter = new CropOptionAdapter(getApplicationContext(), cropOptions);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Choose Crop App");
builder.setAdapter( adapter, new DialogInterface.OnClickListener() {
public void onClick( DialogInterface dialog, int item ) {
startActivityForResult( cropOptions.get(item).appIntent, CROP_FROM_CAMERA);
}
});
builder.setOnCancelListener( new DialogInterface.OnCancelListener() {
@Override
public void onCancel( DialogInterface dialog ) {
if (mImageCaptureUri != null ) {
int id=getLastImageId();
removeImage(id);
getContentResolver().delete(mImageCaptureUri, null, null );
mImageCaptureUri = null;
}
}
} );
AlertDialog alert = builder.create();
alert.show();
}
}
}