I can't write text to NSTextField Objective C - objective-c

Question

I've spent much time finding an answer but I don't understand how right it googling.
I just need to create a simple text field. I've done it but I can't write some text.
After build and run I tried to write but the text was written in x-code window.
What's wrong?
I guess it's related to focus NSWindow or NSApplication.
It's very strange because I can call the context menu and I see cut/copy/paste functions. I even can use those but I can write text by the keyboard.
All code already in main.m
#include <Cocoa/Cocoa.h>
#interface Window : NSWindow {
NSTextField* textBox1;
NSTextField* textBox2;
}
- (instancetype)init;
- (BOOL)windowShouldClose:(id)sender;
#end
#implementation Window : NSWindow
- (instancetype)init {
NSTextField* textBox1 = [[[NSTextField alloc] initWithFrame:NSMakeRect(10, 270, 100, 20)] autorelease];
[textBox1 setStringValue:#"textBox1"];
NSTextField* textBox2 = [[[NSTextField alloc] initWithFrame:NSMakeRect(10, 230, 100, 20)] autorelease];
[textBox2 setStringValue:#"textBox2"];
[super initWithContentRect:NSMakeRect(100, 100, 300, 300)
styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskMiniaturizable | NSWindowStyleMaskResizable | NSWindowStyleMaskUnifiedTitleAndToolbar
backing:NSBackingStoreBuffered
defer:NO];
[self setTitle:#"TextBox Example"];
[[self contentView] addSubview:textBox1];
[[self contentView] addSubview:textBox2];
[self makeFirstResponder:textBox2];
[self setIsVisible:YES];
return self;
}
- (BOOL)windowShouldClose:(id)sender {
[NSApp terminate:sender];
return YES;
}
#end
int main(int argc, char* argv[]) {
[[[Window alloc] init] autorelease];
NSApplication *application = [NSApplication sharedApplication];
[application activateIgnoringOtherApps:YES];
[NSApp run];
}

Answer 1

Thank you for your help but it didn't help me... :(
I could resolve my problem.
I just added the method call setActivationPolicy.
int main(int argc, char* argv[]) {
[[[Window alloc] init] autorelease];
NSApplication *application = [NSApplication sharedApplication];
[application activateIgnoringOtherApps:YES];
[application setActivationPolicy:NSApplicationActivationPolicyRegular];
[NSApp run];
}