android如何限制只能输入指定的字符

1.在xml中直接使用EditText的属性设置

 android:digits="1234567890XYZL"

2. 在代码里直接写 a.

EditText mEditText = (EditText)findViewById(R.id.MyEditText);String digits = "abcdef";mEditText.setKeyListener(DigitsKeyListener.getInstance(digits)); <span style="font-family: arial, 'courier new', courier, 宋体, monospace; white-space: pre-wrap;">

<pre name="code" class="java">EditText mEditText = (EditText)findViewById(R.id.MyEditText);InputFilter[] filters = new InputFilter[1];filters[0] = new MyInputFilter("abcdef");mEditText.setFilters(filters);public class MyInputFilter extends LoginFilter.UsernameFilterGeneric {    private String mAllowedDigits;                                                                                                                                                                     public PopInputFilter( String digits ) {        mAllowedDigits = digits;    }                                                                                                                                                                     @Override    public boolean isAllowed(char c) {        if (mAllowedDigits.indexOf(c) != -1) {            return true;        }                     return false;    }}

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