Android learning Notes section 3 basic controls

Part 1: textview Control

1. Display textview controls in two ways

 

2. textview attributes

① Font size: SP is recommended.

② Height and width: We recommend using DP as the unit.

 

3. Change the text color

 

4. Set hyperlinks

 

5. Effect of Running Horse lights

 

Part 2: edittext Control

1. method for removing focus

 

2. Attributes

Restrict input methods

Limit the number of characters entered

Restrict input information: Numbers

Multi-line text box: by default, it is multi-line

Set Images

Set prompt information

Set rounded corner

 

Part 3: button control

1. Set click events