How get the context in a class which extends Exception

Question

I tried everything, this Using Application context everywhere? and few things more and nothing works.

I need the application context in my DatabaseException class which extends Exception. I need it because I want to check some sharedpreferences when the exceptions are launched. The code basically is this:

public class DatabaseException extends Exception {

private static final long serialVersionUID = 1L;

DatabaseException(){
    super();
}

DatabaseException(String s){
    super(s);
}

public DatabaseException (String s, Throwable t){
    super (s,t);
    kindOfException(t.getCause(), s);
}

DatabaseException (Throwable t){
    super (t);
    kindOfException(t.getCause(), null);
}

...

private void createLog() {
    Log.d("Database Exception","On Create Log");
    String listLogs;
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(DatabaseException.class.context);

of course this doesn't work. So... please, somebody can help me?

Add context field to your class and context param to the constructor — Yahor10, Oct 23 '12 at 13:33

score 1 · Answer 1 · answered Oct 23 '12 at 13:38

public class DatabaseException extends Exception {

private static final long serialVersionUID = 1L;

public YourContext context;
public DatabaseException(YourContext context){
    this.context = context;
}
}

Now if you catch the exception:

try {
    ...
} (catch DatabaseException e) {
    MyContext context = e.context;
}

score 0 · Accepted Answer · answered Oct 23 '12 at 13:33

0

It is Simply.. you can not. But when the Execption is raised you can perform

private void createLog() {
    this.getContext();
    Log.d("Database Exception","On Create Log");
    String listLogs;
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(DatabaseException..
}

the operation you need in the catch clause.

You could pass it as paramter but, please, avoid it.

answered Oct 23 '12 at 13:33

Blackbelt

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I will try it but, could you tell me why is better avoid pass the context as parameter? – Alberto Oct 23 '12 at 13:50
It could cause of memory leaks. – Blackbelt Oct 23 '12 at 13:51
Thank you, the others answers works and are more close what I wanted in the beginning but they are more like patchs than what it should be a good practice. – Alberto Oct 24 '12 at 11:40

score 0 · Answer 3 · answered Oct 23 '12 at 13:40

0

Quick answer:
1. Add application context as parameter of the DatabaseException construtor.
2. Put your DatabaseException as other class's inner class. (Other class means Activity...), so you can use fields/method of outer class in the inner class.
3. ...

answered Oct 23 '12 at 13:40

正宗白布鞋

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It cannot be inner class of any other class. – Alberto Oct 23 '12 at 13:45
Ok, method 2 doesn't work in your use case, then try method 1 as other's suggestion. :) – 正宗白布鞋 Oct 23 '12 at 14:19

How get the context in a class which extends Exception

3 Answers3