pixelomer

Common mistakes in tweak development

This gist contains a list of mistakes I've made or seen people make in the past. These are my opinions, so don't treat them as facts. If you disagree with anything you see here, please let me know.

Adding subviews from [`-[UIView layoutSubviews]`][layoutSubviews]

[-[UIView layoutSubview]][layoutSubviews] is a method that is responsible for adjusting the positions of subviews after something caused the existing layout to be invalidated. There can be various reasons for this. For example, the bounds of the view may have changed or some code may have called [-[UIView setNeedsLayout]][setNeedsLayout]. The point is, regardless of why this method got called, this method gets called a lot. Its only purpose is adjusting the layout of the view to match the new conditions. It is not for adding new subviews to a view.

	// Works on iOS 16 and later. Works by hooking backboardd.
	// { Filter = { Executables = ( "backboardd" ); }; }

	#import <UIKit/UIKit.h>

	@interface BKTouchContact : NSObject {
	CGPoint _normalLocation;
	}
	@end
	@interface BKTouchContactSet : NSObject {

	// ==UserScript==
	// @name Tranmsmission Web Magnets
	// @version 1.0
	// @description Adds "Copy Magnet Link" option to Transmission Web
	// @author pixelomer
	// @match ://:9091/*
	// @grant none
	// @run-at document-end
	// ==/UserScript==

	#import <Foundation/Foundation.h>
	#import <objc/runtime.h>

	static void LoadAllFrameworks(NSString *root) {
	NSFileManager *defaultManager = [NSFileManager defaultManager];
	NSDirectoryEnumerator *enumerator = [defaultManager
	enumeratorAtURL:[NSURL fileURLWithPath:root]
	includingPropertiesForKeys:nil
	options:NSDirectoryEnumerationSkipsSubdirectoryDescendants
	errorHandler:nil

	#!/usr/bin/env python3

	import asyncio
	import logging
	import os

	from aioconsole import ainput

	from joycontrol import logging_default as log, utils
	from joycontrol.command_line_interface import ControllerCLI

	#!/usr/bin/env python3

	# This script creates a message that abuses Janet the Discord
	# bot to print a minesweeper field

	import json
	from sys import stdout
	from random import randint

	BOMB_CELL = 9

	#import <Foundation/Foundation.h>

	NSDictionary OSUParseBeatmap(NSURL beatmapURL);

	- (BOOL)executeQuery:(NSString *)query
	parameters:(NSArray<__kindof NSObject > )params
	block:(BOOL(^)(NSArray<NSString > , NSArray *))block
	{
	sqlite3_stmt *stmt = NULL;
	int status = sqlite3_prepare_v2(_databaseHandle, query.UTF8String, -1, &stmt, NULL);
	if (status != SQLITE_OK) {
	if (stmt) sqlite3_finalize(stmt);
	return NO;
	}

	#import <UIKit/UIKit.h>

	@interface SpringBoard : UIApplication
	- (BOOL)isLocked;
	- (id)_accessibilityFrontMostApplication;
	@end

	static void NVAHVolumeHook(id self, SEL _cmd, id arg1, IMP orig) {
	SpringBoard *springboard = (id)UIApplication.sharedApplication;
	id frontmostApp = [springboard _accessibilityFrontMostApplication];

	#import <UIKit/UIKit.h>
	#import <objc/runtime.h>
	#define NSLog(args...) NSLog(@"[CleanTube] "args)

	static NSString * const reuseIdentifier = @"CleanTubeCell";

	@interface YTAsyncCollectionView : UICollectionView<UICollectionViewDataSource>
	@property (nonatomic, retain) NSMutableArray<NSIndexPath > cleanIndexPaths;
	@end

pixelomer

Common mistakes in tweak development

Adding subviews from [-[UIView layoutSubviews]][layoutSubviews]

Using Logos directives improperly

Adding subviews from [`-[UIView layoutSubviews]`][layoutSubviews]