Android basic entry control (3)

All of the following controls only show the code of this control. The operation will be added to the original control.

1. TextView (text box ):

TextView is used to display text to users. This is the most basic view.

Running effect:

Android: background: Set the background color

Android: text sets the display content

Android: textColor: Set the font color

Android: layout_gravity sets the center display of the control

Android: textSize: Set the font size

Ii. EditText (edit box ):

EditText allows users to edit their text content.

Running effect:

Common attributes:

Android: numeric. You can enter the text type in the edit box.

Android: singleLine: Set single-line Input. If this parameter is set to true, the text will not wrap automatically.

Android: When the password is true, you can only enter a password.

Android: textScaleX sets the spacing between words.

Android: minLines sets the minimum number of lines of text.

Android: EMS sets the length of the text in the editing box.

3. Button ):

Button indicates the Button control.

Running effect:

Common attributes:

Android: onClick: Set the event method name.

Android: clickable: Set whether this button can be clicked. True indicates that click is allowed. False indicates that clicking is not allowed.

4. RadioGroup and RadioButton (single choice ):

We combine RadioGroup and RadioButton to complete the single-item selection function.

Running effect:

You can only select one of the multiple options.

5. CheckBox (multiple options ):

Running effect:

The difference between a multi-choice and a single-choice is that multiple options can be selected for multiple choices, and only one option can be selected for a single choice.