First line of code Android Chapter III

1 Common control usage

TestView Gravity Text Center

Button text AllCaps Default uppercase

EditText Maximum number of rows Maxlines

1Button.setonclicklistener (NewView.onclicklistener () {2 @Override3              Public voidOnClick (view view) {4 5                 Switch(View.getid ()) {6                      CaseR.id.button:7String Inputtext = Edittext.gettext (). toString ();//The GetText method gets to the input and then calls the ToString method to convert to a string8Toast.maketext (mainactivity. This, Inputtext,toast.length_short). Show ();9                          Break;Ten                     default: One                          Break; A                 } -  -  the  -                 Switch(View.getid ()) { -                      CaseR.id.button: - Imaggeview.setimageresource (R.drawable.xihaya); +                          Break; -                     default: +                          Break; A                 } at             } -         }); -}

ProgressBar progress bar ...

2 layout

Ctrl+alt+l

First line of code Android Chapter III