java - Disappearing default constructors -

-

I have received several crash reports with the following stack trace (name change): 

  Reason by: java.lang.InstantiationException: Class can not start com.example. My application; No empty creator on java.lang.Class.newInstance (Class.java12319) on android.app at android.app on Java.lang.Clang.newInstanceImpl (Basic Method) android.app.Instrumentation.newApplication (Instrumentation.java:997) . Instrumentation.newApplication (Instrumentation.java:982) ... 11 and java.lang.RuntimeException on Android.app.LoadedApk.makeApplication (LoadedApk.java:496): Unable to instantiate the application com.example. MyApplication: java.lang InstantiationException: Class can not start com.example. MyApplication; There is no empty manufacturer on Android.app.LoadedApk.makeApplication (LoadedApk.java .0101)

android.app.Application is a manufacturer with a clear parameter : 

  public application () {super (blank); }

MyApplication inherited from android.app.Application and no explicit constructor at all is. According to my understanding of Java Speak, it means that interconnected should be inserted by the following manufacturer compiler: 

  Public MyApplication () {super (); }

This may have happened, or I have never been able to compile the app for the first time. So what could be the reason for these accidents?

Edit: Here is part of the output from Decompelling ProGuard-ed MyApplication.class javap : 

  "MyApplication.java" compiled public class com.example. My Exceptions Android.app.app {public com.example.MyApplication (); Signature: () Creates (V) on Public Zero; Signature: () Vocal vacuum (); Signature: () V public void zero (integer); Signature: (i) v // ... some other methods ... stable {}; Signature: () V}

The default constructor is definitely there, and it is public.

Note: this issue did not come out in this case, but if you are reading this question Because you have encountered the same symptom, it can be a problem for you ...

According to my understanding of Java Spec , It means that the following constructor should be implied by the compiler 

  Public MyApplication () {super}; }

This is only the case if it is from the public class:

the default constructor's orbit (ยง 6.6) has the same access as.

So if your class is declared public , the constructor will not be public either.

You have not shown your class declaration, but first you should see that it is public.


Comments

Post a Comment

Popular posts from this blog

Editing Python Class in Shell and SQLAlchemy -

-
I am working on the terminal on a shell script after this tutorial SQLAlchemy tutorial. I need to type gt; & Gt; & Gt; Sqlalchemy import column, integer, string & gt; & Gt; & Gt; Class user (base): __tablename__ = 'users' id = column (integer, primary_key = true) name = column (string) absolute name = column (string) password = column (string) def __repr __ (self): return "& lt ; User (name = '% s', absolute name = '% s', password = '% s') & gt; "% (Self.name, self.fullname, self.password) After the problem I have typed the password = column (string) I hit twice and changed .... >> I then took everything back but then an error was thrown because the class already exists ... I am not completely sure how to fix it. How do I open that slip in the shell script and edit it (Add DF to DRR) The error thrown below: / user / giripeters / TFSQLLX / Lib / python2.7 / site-packages / sqlalchemy / ext / decla...
Read more

import - Python ImportError: No module named wmi -

-
I followed the instructions for downloading WMI for Python When I try to run the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = wmi.WMI (): if Raw_input ("restart% s?"% S.Caption) .upper () == "Y": s.StartService () I got the error traceback (most recent call end): file ". \", Line 1, edit: I am using Python 2.7.6 EDIT2: I am running 64-bit Windows 2008 R2, and I've downloaded WMI-1.4.9.zip (md5). I removed the content and put it in D: Python \ Tools \ Scripts I executed dragon setup.py.install I said D : \ Python \ tools \ scripts to% PATH% and when I execute the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = Wmi.WMI (): If raw_input ("Restart% s?"% S. Caption). () == "Y": s.StartService () error me Gets traceback (most recent call final): File ". See \", line 1, & lt; Modu...
Read more

uislider - In a MATLAB GUI, how does one implement a continuously varying slider from a GUIDE created .m file? -

-
I am trying to create a GUI with a plot and a slider. The slider should be described as continuously and output. I have a problem with this explanation that the uicontrol object is programmatically created, on the contrary, I want to know that in the last three instances, to complete the same thing done according to the program What can be added to a GUI file that is created. The code is down, and I have marked the (wrong) code that is provided by some of the above examples. Thanks a lot for any help! This slider function sets P1_slider_Callback (hObject, eventdata, handle) (handle, dragon, 'string', num2str (get (hObject, 'value'), 3)) PlottheData_Callback ( HOBject, EventData, Handle)% "PlotHeadata" is a button that creates the data slider based on the value of P1_slider%, and I think that here "p1_slider_CreateFcn" (hObject, eventdata, handle) needs to be assembled (HOBJECT, 'BackgroundRoller'), (0, 'Default UITTACKBACK MANDROLLE...
Read more