在android中需要在EditView中输入电话号码3 + 4 + 4格式时，以下两种方式都可以实现，但是个人觉得第一种方式，即获取EditView文字内容变化是最好的方式。所谓3+4+4的电话号码格式，如：135 4567 8900
第一种：捕捉EditView的内容改变
et_PhoneNum.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence str, int arg1, int arg2, int arg3) { // 已经改变了的。
String contents = str.toString();
int length = contents.length();
if(length == 4){
if(contents.substring(3).equals(new String(" "))){ // -
contents = contents.substring(0, 3);
et_PhoneNum.setText(contents);
et_PhoneNum.setSelection(contents.length());
}else{ // +
contents = contents.substring(0, 3) + " " + contents.substring(3);
et_PhoneNum.setText(contents);
et_PhoneNum.setSelection(contents.length());
}
}
else if(length == 9){
if(contents.substring(8).equals(new String(" "))){ // -
contents = contents.substring(0, 8);
et_PhoneNum.setText(contents);
et_PhoneNum.setSelection(contents.length());
}else{// +
contents = contents.substring(0, 8) + " " + contents.substring(8);
et_PhoneNum.setText(contents);
et_PhoneNum.setSelection(contents.length());
}
}
}
@Override
public void beforeTextChanged(CharSequence str, int arg1, int arg2,int arg3) {
}
@Override
public void afterTextChanged(Editable arg0) {// TODO Auto-generated method stub
}
});这里只罗列了主要的逻辑代码，这个EditView的inputType是phone。其它的就不用多说了，布局上的事情。
第二种：捕获EditText的onKeyDown和onKeyUp事件，分别进行处理，但是在搜狗软键盘上，按数字的时候不能响应onKeyUp。有点bug，相比之下，还是第一种方式最好。
et_PhoneNum.setOnKeyListener(new MyEditTextOnKeyListener());
class MyEditTextOnKeyListener implements OnKeyListener{
@Override
public boolean onKey(View arg0, int code, KeyEvent event) {
if(event.getAction() == KeyEvent.ACTION_DOWN){
if(code == KeyEvent.KEYCODE_DEL){
String phoneNum2 = et_PhoneNum.getText().toString() ;
int length2 = phoneNum2.length() ;
if(length2 == 5){
phoneNum2 = phoneNum2.substring(0, 3);
et_PhoneNum.setText(phoneNum2);
et_PhoneNum.setSelection(phoneNum2.length());
return true;
}else if(length2 == 10){
phoneNum2 = phoneNum2.substring(0, 8);
et_PhoneNum.setText(phoneNum2);
et_PhoneNum.setSelection(phoneNum2.length());
return true;
}
return false;
}
}
if(event.getAction() == KeyEvent.ACTION_UP){ // must caught key up
String phoneNum = et_PhoneNum.getText().toString() ;
Log.e("ACTION_UP"," code = " + code);
Log.e("ACTION_UP"," phoneNum = " + phoneNum);
if(phoneNum.equals("")){
return false ;
}
int length = phoneNum.length() ;
if(length == 4){
phoneNum = phoneNum.substring(0, 3) + " " + phoneNum.substring(3, 4);
et_PhoneNum.setText(phoneNum);
et_PhoneNum.setSelection(phoneNum.length());
}
if(length == 9){
phoneNum = phoneNum.substring(0, 8) + " " + phoneNum.substring(8, 9);
et_PhoneNum.setText(phoneNum);
et_PhoneNum.setSelection(phoneNum.length());
}
}
return false;
}
}