Objective-C 和 Android [关闭]

Objective-C 和 Android 是两种不同的编程语言，分别用于开发 iOS 和 Android 平台上的应用程序。本文将分别介绍 Objective-C 和 Android，并通过案例代码展示它们的特点和用法。

objective-c
#import 
@interface ViewController : UIViewController
@property (nonatomic, strong) UILabel *label;
@end
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.label = [[UILabel alloc] initWithFrame:CGRectMake(50, 100, 200, 50)];
    self.label.text = @"Hello, Objective-C!";
    self.label.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:self.label];
}
@end

java
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
    private TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = findViewById(R.id.textView);
        textView.setText("Hello, Android!");
    }
}