摘要:本文将带你了解iOS开发之获取控制器里面的控件,希望本文对大家学IOS有所帮助。
iOS获取控制器里面的控件
[objc] view plain copy 1. for (int i=0; i<3; i++) { 2. 3. UILabel *testLabel = [[UILabel alloc]initWithFrame:CGRectMake(((self.view.frame.size.width - 20)/3 + 10) * i, 100, (self.view.frame.size.width - 20)/3, (self.view.frame.size.width - 20)/3)]; 4. testLabel.backgroundColor = [UIColor cyanColor]; 5. testLabel.tag=111+i; 6. testLabel.textColor = [UIColor purpleColor]; 7. testLabel.text = [NSString stringWithFormat:@"这是第 %d 个",i]; 8. [self.view addSubview:testLabel]; 9. 10. } //创建 控件UILabel [objc] view plain copy 1. // 测试按钮 2. UIButton *testBtn = [UIButton buttonWithType:UIButtonTypeCustom]; 3. testBtn.frame = CGRectMake((self.view.frame.size.width - 20)/3 + 10, 100 + (self.view.frame.size.width - 20)/3, (self.view.frame.size.width - 20)/3, (self.view.frame.size.width - 20)/3); 4. testBtn.backgroundColor = [UIColor purpleColor]; 5. [testBtn addTarget:self action:@selector(testBtnClick) forControlEvents:UIControlEventTouchUpInside]; 6. [self.view addSubview:testBtn]; [objc] view plain copy 1. -(void)testBtnClick{ 2. 3. for (int i=0; i<3; i++){ 4. 5. UILabel *tempLabel=(UILabel *)[self.view viewWithTag:111+i]; 6. tempLabel.font=[UIFont systemFontOfSize:12.0]; 7. tempLabel.text = [NSString stringWithFormat:@"This is %d",i]; 8. tempLabel.textColor = [UIColor redColor]; 9. tempLabel.textAlignment = NSTextAlignmentCenter; 10. 11. }//取出 控件UILabel 12. 13. } [objc] view plain copy 1. //扩展: 2. UIButton *btn1 = (UIButton *)[myView viewWithTag:1]; 3. UILabel *Label = (UILabel *)[myView viewWithTag:2]; 4. UITextView *TextView = (UITextView *)[myView viewWithTag:3];
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