Eclipse shortcut key: Guide package: Ctrl+alt+o format code: CTRL+ALT+F mvc:m--modelv--viewc--control Android Program Interface How to design, Debug UI (user interface) Interface → layout file xml layout in Android: LinearLayout linear layout: All controls are in a straight line. Level Vertical relativelayout Relative layout: The position of a control relative to the B control tablelayout table layout: Table Framelayout frame layout equivalent to HTML: divabsolutelayout Absolute Layout: Absolute position of control (deprecated) Color.xml width, height parameter wrap_content: Determines the size of the control according to the content fill_parent, Match_parent: Depending on the length of the parent control, the length of the control depends on the resolution of the Android phone, There is no problem with Apple iOS (same specification) DP: Represents a density-independent pixel, the recommended control is used with the layout of the SP: represents a scalable pixel, generally to set the text size px: pixels, used on phones of different resolutions PT: Pound Factor, gravity= "center" on phones with different resolutions : The contents of the control are centered in the control; layout_gravity= "Center": the control is centered in the parent control. Response Event: 1, Call anonymous class, 2, bind directly to the control, add the property onclick on the button, and the activity adds a method to respond to the event, the name of the method is the same as the Android:onclick property value in the layout file! The parameters of the method are (view view), 3, the inner class is implemented, 4, the Onclicklistener interface is realized;
Android Development Note-01
