iphone - UItextField 文本位于中心

Question

我有这个文本字段

谁在中心写文字？/////////////////////////////////////////////

 textPredmet = [[UITextField alloc] initWithFrame:CGRectMake(20, 55, 200, 40)];
    textPredmet.borderStyle = UITextBorderStyleNone;
    textPredmet.textColor = [UIColor blackColor]; //text color
    textPredmet.font = [UIFont systemFontOfSize:15.0];  //font size

    [textPredmet drawTextInRect:CGRectMake( 30,55,200,40)];

    textPredmet.placeholder = @"Введите текст";  //place holder
    textPredmet.backgroundColor = [UIColor clearColor]; //background color
    textPredmet.autocorrectionType = UITextAutocorrectionTypeNo;    // no auto correction support
    textPredmet.keyboardType = UIKeyboardTypeDefault;  // type of the keyboard
    textPredmet.returnKeyType = UIReturnKeyDone;  // type of the return key
    textPredmet.clearButtonMode = UITextFieldViewModeWhileEditing;  // has a clear 'x' button to the right
    textPredmet.delegate = self;    // let us be the delegate so we know when the keyboard's "Done" button is pressed
    textPredmet.background = [UIImage imageNamed:@"input.png"];
    textPredmet.textAlignment=UITextAlignmentLeft+1;
    [self.view addSubview:textPredmet];

Answer 1

将下面的行设置为您的代码。

textPredmet.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;

它将垂直设置文本中心。

  textPredmet.textAlignment = UITextAlignmentCenter;

它将水平设置文本中心。

另外，从代码中删除以下行。

[textPredmet drawTextInRect:CGRectMake( 30,55,200,40)];