我有一个活动用startActivityForResult调用另一个活动（绘图），但当我完成另一个活动时，应用程序崩溃，然后输入onActivityResult（第一个活动），RuntimeException
这就是我调用Draw活动的方式：
fileUri = getOutputMediaFileUri(wo.getWorkOrder() + " - IMG");
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivityForResult(intent, strategy.ordinal());
在新活动中：
Bitmap bmp = sign.getBitmapImage();
Intent doc = IntentFactory.createWorkOrderDocumentsTable(this);
doc.putExtra("signature", bmp);
setResult(RESULT_OK, doc);
AsyncTask（我这次没有使用这个异步任务，但它是logcat中提到的asynctask）：
公共类LoadWorkOrderInfo扩展了AsyncTask {
ProgressDialog progress;
Context context;
Application app = Application.getInstance();
String woExecution;
public LoadWorkOrderInfo(Context context) {
this.context = context;
}
protected void onPreExecute() {
}
protected Integer doInBackground(Integer... paramss) {
try {
CompanyQueries cQ = CompanyQueriesFactory.createCompanyQueriesFactory();
LaborRecordQueries lrq = LaborRecordQueriesFactory.createWorkOrderQueriesFactory();
WorkTypeQueries wtq = WorkTypeQueriesFactory.createWorkTypeQueriesFactory();
WorkRequestTypeQueries wrtq = WorkRequestTypeQueriesFactory.createWorkRequestTypeQueriesFactory();
String parameterValue = cQ.getCompanyParameterValue(601);
if (parameterValue.equals("1")) {
woExecution = app.getExecutionWOState().getWorkOrderState();
app.setUseLaborRecord(parameterValue.equals("1"));
} else {
woExecution = null;
app.setUseLaborRecord(parameterValue.equals("1"));
}
if (wo != null) {
app.setWorkOrder(wo);
// Verifica se OS est? em execu??o
if (wo.getWorkOrderState().equals(
app.getExecutionWOState().getWorkOrderState())) {
isWOInExecution = true;
// Carrega LaborRecord para preparar finaliza??o da OS
lre = lrq.selectLaborRecordByWorkOrderAndWorker(wo,
app.getUser());
}
}
else
return 3;
workTypeName = wtq.selectWorkTypeName(app.getWorkOrder().getWorkType());
workRequestTypeName = wrtq.selectWorkRequestTypeName(app.getWorkOrder().getWorkRequestType());
return 1;
}
else
{
WorkOrder workOrder = app.getWorkOrder();
if(workOrder == null)
return 2;
else if (!app.useLaborRecord())
{
return 4;
}
else
return 1;
}
}
protected void onPostExecute(Integer result) {
WorkOrder wo = app.getWorkOrder();
if (result == 1) {
try {
if (app.useLaborRecord() && (wo == null || wo.getWorkOrderState().equals(woExecution))) {
LaborRecordThread lrThread = new LaborRecordThread();
lrThread.start();
lrThread.join();
} else {
WorkOrder workOrder = app.getWorkOrder();
if (workOrder == null) {
showDialog(getString(R.string.Attention),
getString(R.string.NotExecutingAnyWO), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
});
} else if (!app.useLaborRecord()) {
Button btnInitEndWorkOrder = (Button) findViewById(R.id.BtnActionBar);
btnInitEndWorkOrder
.setText(getString(R.string.ChangeState));
btnInitEndWorkOrder
.setOnClickListener(new BtnChangeStateOnClick(
WorkOrderInfo.this));
loadWorkOrderFields(workOrder);
} else
loadWorkOrderFields(workOrder);
}
/*if(progress.isShowing())
progress.dismiss();*/
} catch (InterruptedException e) {
/*if(progress.isShowing())
progress.dismiss();*/
showDialog(getString(R.string.Error),
getString(R.string.LoadWOInfoError));
}
} else if (result == 0) {
/*if(progress.isShowing())
progress.dismiss();*/
showDialog(getString(R.string.Error),
getString(R.string.LoadWOInfoError));
}
/*if(progress.isShowing())
progress.dismiss();*/
}
}
logcat的：
FATAL EXCEPTION: AsyncTask #1
Process: com.sisteplantbrasil, PID: 21888
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.database.sqlite.SQLiteDatabase android.content.Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase$CursorFactory, android.database.DatabaseErrorHandler)' on a null object reference
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
at com.sisteplantbrasil.queries.sql.DBEntity.open(DBEntity.java:35)
at com.sisteplantbrasil.queries.sql.CompanyDBQueries.getCompanyParameterValue(CompanyDBQueries.java:214)
at com.sisteplantbrasil.WorkOrderInfo$LoadWorkOrderInfo.doInBackground(WorkOrderInfo.java:246)
at com.sisteplantbrasil.WorkOrderInfo$LoadWorkOrderInfo.doInBackground(WorkOrderInfo.java:222)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
任何人都可以帮助我吗？感谢