添加X位後短線在EDITTEXT

Question

我在Android新希望，當我進入的EditText CNIC以再經過一些數字我可以把破折號它想：

12221-1338888-3

et_cnic = (EditText) findViewById(R.id.et_cnic); 

我該如何做到這一點？請幫助。

Answer 1

String content=""; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    final EditText edText = (EditText)findViewById(R.id.edText); 
    edText.addTextChangedListener(new TextWatcher() { 

     @Override 
     public void onTextChanged(CharSequence s, int start, int before, int count) { 
      // TODO Auto-generated method stub 
      if(s.length()%4 == 0){ 
       int starting = content.length()==0?0:content.length(); 
       content = content+s.subSequence(starting, start)+"-"; 
      } 
     } 

     @Override 
     public void beforeTextChanged(CharSequence s, int start, int count, 
       int after) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void afterTextChanged(Editable s) { 
      // TODO Auto-generated method stub 
     } 
    }); 
} 

Answer 2

試試這個

 edt.addTextChangedListener(new TextWatcher() { 
     @Override 
     public void beforeTextChanged(CharSequence s, int start, int count, int after) { 

     } 

     @Override 
     public void onTextChanged(CharSequence s, int start, int before, int count) { 
      String str = s.toString(); 
      if(s.length() == 5 || s.length() == 13){ 
       str += "-"; 
       edt.setText(str); 
    edt.setSelection(str.length()); 
      } 
     } 

     @Override 
     public void afterTextChanged(Editable s) { 

     } 
    }); 

Answer 3

et_cnic .addTextChangedListener(new TextWatcher() { 
     @Override 
     public void onTextChanged(CharSequence s, int start, int before, int count) { 

      if(String.valueOf(et_cnic.getText()).length>X)//here x is the number of character after which "." will display on edit text 

      { 
       et_cnic.setText(String.valueOf(et_cnic.getText).substring(0,X)+"*")//x here same the number of charcter which you do not want to replace with"." 
      } 
      // TODO Auto-generated method stub 
      // Here you have to write your code for adding dashes. 

     } 

     @Override 
     public void beforeTextChanged(CharSequence s, int start, int count, int after) { 

      // TODO Auto-generated method stub 
     } 

     @Override 
     public void afterTextChanged(Editable s) { 

      // TODO Auto-generated method stub 
     } 
    }); 

Answer 4

試試這個：

int x = 2; 
    edt = (EditText) findViewById(R.id.edt_test); 
    edt.addTextChangedListener(new TextWatcher() { 
     @Override 
     public void beforeTextChanged(CharSequence s, int start, int count, int after) { 

     } 

     @Override 
     public void onTextChanged(CharSequence s, int start, int before, int count) { 
      if (s.toString().length() == x) { 
       edt.setText(s + "-"); 
       edt.setSelection(s.toString().length() + 1); 
      } 
     } 

     @Override 
     public void afterTextChanged(Editable s) { 

     } 
    });