android中editText 输入字数限制

     这里主要是说的就是EditText输入框限制输入字数,

Java代码：

1. editText.addTextChangedListener(new TextWatcher(){
   
2. 
   
3. private CharSequence temp;
   
4. 
   
5. private boolean isEdit = true;
   
6. 
   
7. @Override
   
8. public void afterTextChanged(Editable s) {
   
9. 
   
10. if(temp.length()>Constant.TEXT_MAX){
    
11. 
    
12. isEdit = false;
    
13. 
    
14. s.delete(temp.length()-1,temp.length());
    
15. 
    
16. editText.setText(s);
    
17. 
    
18. }
    
19. 
    
20. }
    
21. 
    
22. @Override
    
23. public void beforeTextChanged(CharSequence s, int arg1,int arg2, int arg3) 
    
24. {
    
25. 
    
26. temp = s;
    
27. 
    
28. }
    
29. 
    
30. @Override
    
31. public void onTextChanged(CharSequence s, int arg1, int arg2,int arg3) 
    
32. {
    
33. 
    
34. if(isEdit == false){
    
35. 
    
36. Toast.makeText(KaguProductActivity.this, R.string.edit_content_limit, Toast.LENGTH_SHORT).show();
    
37. 
    
38. Editable etext = editText.getText();
    
39. 
    
40. int pos = etext.length();
    
41. 
    
42. Selection.setSelection(etext,pos);
    
43. 
    
44. }
    
45. 
    
46. }
    
47. 
    
48. });