测试配置

keyBoard/ViewController.m

@@ -8,7 +8,7 @@
 #import "ViewController.h"
 
 @interface ViewController ()
-
+@property (nonatomic,strong)UITextField *textField;
 @end
 
 @implementation ViewController
@@ -16,6 +16,14 @@
 - (void)viewDidLoad {
     [super viewDidLoad];
     // Do any additional setup after loading the view.
+    self.view.backgroundColor = [UIColor grayColor];
+    self.textField = [[UITextField alloc] init];
+    self.textField.frame = CGRectMake(100, 100, 200, 40);
+    self.textField.layer.borderWidth = 1;
+    self.textField.layer.borderColor = [UIColor redColor].CGColor;
+    [self.view addSubview:self.textField];
+    
+
 }