getClass().getProtectionDomain().getCodeSource().getLocation().getPath() Throw a null pointer exception

Question

I used this line of code in a Java class to retrieve a URI which i used to customize the ClassLoader:

String uri = getClass().getProtectionDomain().getCodeSource().getLocation().getPath();

Now the same line of code in an Android App in the MainActivity to be exact throw a null pointer exception.

Is there something special for Android development ? Thanks.

What is the value of `this` at the time? `getClass()` is not a static method. — PM 77-1, Jan 06 '15 at 00:48
Break it down into separate statements and tell us which of those method calls is failing. — user207421, Jan 06 '15 at 00:50
@PM77-1: it's the same we can use `this.getClass()` or `getClass()` it refers to the current loaded class. — user3728064, Jan 06 '15 at 01:03

score 3 · Accepted Answer · answered Jan 06 '15 at 00:52

3

getProtectionDomain() is not implemented in Android's version of Java

Also, the ProtectionDomain class is marked as "Legacy security code; do not use."

I assume this only exists in Android Java to maintain compilation compatibility.

answered Jan 06 '15 at 00:52

Rich

1

Rich, you're right. Is there any trick or other solution to do it. I want the URI to load compiled class (.class) in the same path. – user3728064 Jan 06 '15 at 01:08

1 Answers1