tokorom / blockinjection Goto Github PK

What do you think about having the possibility for the preprocess block to return a value to indicate if it should continue invoking the original and the post-process?

http://qiita.com/oden@github/items/bae5a818b4fafbb9ffec

(´・ω・`)

Precondition

MyViewController has a child view controller (added using addChildViewController:)

Crashing Issue

If a add this follow code to MyViewController

[BILib injectToClassWithName:@"MyViewController" methodName:@"viewDidAppear:" preprocess:^{

}];

I get this

-[ChildViewController __mi_pre_0_viewDidAppear:]: unrecognized selector sent to instance

Is there a work around for this issue?

Hello everyone !
I have asked the question on stack overflow but I can not understand an answer. Could you please show how to solve this issue with the help of your framework.
Link - http://stackoverflow.com/questions/27254568/aop-solve-academic-example

Thanks!

 [BILIB insertPreprocessToSelector:@selector(setFrame:) forClass:[UIView class] block:^{
  // ...
}];

In this case, your application crashes.

Failed with return value of more than 5byte.

For example,

[BILib injectToClassWithName:@"UIView" methodName:@"frame" preprocess:^{
}];

is failed.

#pragma mark - Parent

@interface Parent : NSObject
- (void)sayMessage:(NSString*)message;
@end 

@implementation Parent
- (void)sayMessage:(NSString*)message
{
  NSLog(@"Parent says: %@", message);
}
@end 

#pragma mark - Child

@interface Child : Bizz
@end

@implementation Parent
- (void)sayMessage:(NSString*)message
{
  NSLog(@"Child says: %@", message);
}
@end

// ...

[BILIB insertPreprocessToSelector:@selector(sayMessage:) forClass:[Child class] block:^{
  // ...
}];

In this case, Child's sayMesasge: is not called and only Parent's sayMessage: is called.

http://naosim.syoyu.net/いろいろ/blockinjectionで落ちた話

My english not very well, but I will try.

In method - (void_)invokeWithTarget:(id)target args:(va_list_)args of BIItem class you are using __builtin_alloca(returnLength);

This method allocate memory in a current stack, xCode has showed that in some case you can return pointer to the memory. And it can make crash.

May be I am wrong, and pointer will change after __builtin_alloca method, but it is very danger place.

Hi.

When I tried to add following codes in Master-Detail-Application template project,
UIView subclass (UINavigationButton in this example) didn't perform
-sizeThatFits: injection block (also seen in other cases e.g. [cell.textLabel sizeToFit]).

Is this a bug, or am I missing something?

// MasterViewController.m from Master-Detail-Application

+ (void)initialize
{
    [BILib injectToClass:[UIView class] selector:@selector(sizeToFit) preprocess:^(id obj){
        NSLog(@"%@ sizeToFit", [obj class]);
    }];

    Class testClass;
    testClass = [UIView class]; // this doesn't work
    //testClass = NSClassFromString(@"UINavigationButton");   // this works

    [BILib injectToClass:testClass selector:@selector(sizeThatFits:) preprocess:^(id obj, CGSize size){
        NSLog(@"%@ sizeThatFits %@", [obj class], NSStringFromCGSize(size));
    }];
}