问题描述
首先 - 我知道私有框架/API 不会让我进入 AppStore,这仅供私人使用/研究。
因此,出于研究目的,我选择了 MFMessageComposer,我想禁用对从代码传递的任何输入的编辑。
我试着把我的手放在这个上面,我用下面的方式编码。我所做的是采用私有框架的路径并访问名为 CKSMSComposeController
的特定类,该类具有上述方法。我引用了 ChatKit.framework https://github.com/nst/iOS-Runtime-Headers/blob/master/PrivateFrameworks/ChatKit.framework/CKSMSComposeController.h
class dump
类
这是我的代码:
#import "ViewController.h"
#import <MessageUI/MessageUI.h>
@interface ViewController ()<MFMessageComposeViewControllerDelegate>
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
// Here I load the CKSMSController class
NSBundle *b = [NSBundle bundleWithPath:@"/System/Library/PrivateFrameworks/ChatKit.framework"];
BOOL success = [b load];
NSLog(@"Result %@",success ? @"YES" : @"NO");
Class CKSMSComposeController = NSClassFromString(@"CKSMSComposeController");
// Passing no to setCanEditRecipients so as to disable the Editing of recepients
id si = [[CKSMSComposeController alloc] valueForKey:@"init"];
SEL sel = NSSelectorFromString(@"setCanEditRecipients:");
if ([CKSMSComposeController respondsToSelector:sel]) {
BOOL myBool = NO;
NSNumber *passedValue = [NSNumber numberWithBool:myBool];
[CKSMSComposeController performSelector:sel withObject:passedValue];
}
NSLog(@"ID is%@",si);
}
- (IBAction)sendMessage:(UIButton *)sender {
if([MFMessageComposeViewController canSendText]) {
MFMessageComposeViewController *messageController = [[MFMessageComposeViewController alloc] init]; // Create message VC
messageController.messageComposeDelegate = self; // Set delegate to current instance
NSMutableArray *recipients = [[NSMutableArray alloc] init]; // Create an array to hold the recipients
[recipients addobject:@"555-555-5555"]; // Append example phone number to array
messageController.recipients = recipients; // Set the recipients of the message to the created array
messageController.body = @"Example message"; // Set initial text to example message
dispatch_async(dispatch_get_main_queue(),^{ // Present VC when possible
[self presentViewController:messageController animated:YES completion:NULL];
});
}
}
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result {
[self dismissViewControllerAnimated:YES completion:NULL];
}
@end
我将 NSLog(@"Result %@",success ? @"YES" : @"NO");
的日志设为 YES
,但即使将 NO 传递给上面的选择器,我仍然无法禁用收件人的编辑
有人能告诉我我是否以正确的方式传递参数吗? 因为 -(void)setCanEditRecipients:(BOOL)arg1;` 这是一个私有方法框架接受 bool 作为参数,我在上面的代码中传递 NO
这仅用于私有框架的内部研究。我哪里做错了?。请告诉
解决方法
类方法以 +
开头,实例方法以 -
中的 Objective-C
开头。
// Following is an instance method because it starts with `-`
- (void)setCanEditRecipients:(bool)arg1;
以上方法不适用于以下代码。
Class CKSMSComposeController = NSClassFromString(@"CKSMSComposeController");
SEL sel = NSSelectorFromString(@"setCanEditRecipients:");
// `CKSMSComposeController` is a class - NOT an instance
if ([CKSMSComposeController respondsToSelector:sel]) {
// will not enter if's body
}
最重要的是 - 您不应该创建自己的实例并对其进行自定义。您应该对系统在屏幕上显示的实例进行自定义。
这是你可以尝试的方法 -
- (void) showMessageComposeViewController {
if ([MFMessageComposeViewController canSendText]) {
MFMessageComposeViewController* messageController = [[MFMessageComposeViewController alloc] init];
messageController.recipients = @[@"555-555-5555"];
messageController.body = @"Example message";
[self presentViewController:messageController animated:YES completion:^{
// Allow enough time for the UI to be loaded fully
dispatch_after(1,dispatch_get_main_queue(),^{
// Since `MFMessageComposeViewController` is a `UINavigationController`,we can access it's first view controller like this
UIViewController* targetVC = messageController.viewControllers.firstObject;
// Check if the instance is of correct class type
if ([targetVC isKindOfClass:NSClassFromString(@"CKSMSComposeController")]) {
SEL sel1 = NSSelectorFromString(@"setCanEditRecipients:");
if ([targetVC respondsToSelector:sel1]) {
// put breakpoint here to check whether this line is executed
[targetVC performSelector:sel1 withObject:@NO];
}
SEL sel2 = NSSelectorFromString(@"setTextEntryContentsVisible:");
if ([targetVC respondsToSelector:sel2]) {
// put breakpoint here to check whether this line is executed
[targetVC performSelector:sel2 withObject:@NO];
}
}
});
}];
}
}