28、editText只输入英文字母和'-'，用于授权码输入
1 InputFilter filter = new InputFilter() { 2 3 @Override 4 public CharSequence filter(CharSequence source, int start, int end, 5 Spanned dest, int dstart, int dend) { 6 // TODO Auto-generated method stub 7 for (int i = start; i < end; i++) 8 { 9 //在这里判断输入的只能是英文字母和符号'-' 10 if (!Character.isLetter(source.charAt(i)) 11 && source.charAt(i) != '-') 12 { 13 return ""; 14 } 15 } 16 return null; 17 } 18 }; 19 20 etActivteCode.setFilters(new InputFilter[] { filter }); 21 etActivteCode.addTextChangedListener(new TextWatcher() { 22 23 @Override 24 public void onTextChanged(CharSequence s, int start, int before, 25 int count) { 26 // TODO Auto-generated method stub 27 28 etActivteCode.removeTextChangedListener(this);// 解除文字改变事件 29 30 if ((s.length() == 4 || s.length() == 9 || s.length() == 14)) { 31 etActivteCode.setText(s.toString().toUpperCase() + "-");// 转换 32 } else { 33 etActivteCode.setText(s.toString().toUpperCase());// 转换 34 } 35 36 etActivteCode.setSelection(s.toString().length());// 重新设置光标位置 37 etActivteCode.addTextChangedListener(this);// 重新绑 38 String licensePlateNumber = etActivteCode.getText().toString() 39 .trim(); 40 } 41 42 @Override 43 public void beforeTextChanged(CharSequence s, int start, int count, 44 int after) { 45 // TODO Auto-generated method stub 46 } 47 48 @Override 49 public void afterTextChanged(Editable s) { 50 // TODO Auto-generated method stub 51 52 if (s.length() == 19) { 53 buttonActivate.setVisibility(View.VISIBLE); 54 InputMethodUtils.HideKeyboard(etActivteCode); 55 } 56 57 } 58 }); 59 etActivteCode.setOnKeyListener(new OnKeyListener() { 60 @Override 61 public boolean onKey(View v, int keyCode, KeyEvent event) { 62 // TODO Auto-generated method stub 63 if (keyCode == KeyEvent.KEYCODE_DEL) { 64 CommonUtils.LogWuwei(tag, "delete"); 65 etActivteCode.setText(""); 66 buttonActivate.setVisibility(View.INVISIBLE); 67 } 68 return false; 69 } 70 }); 71 }
效果如下:
