android中EditText只允许输入汉字（过滤汉字）

FilterUtils中添加过滤方法：

public class FilterUtils {

 public static String filterChinese(String str){
        String regEx="[^\\u4E00-\\u9FA5]";
        Pattern p=Pattern.compile(regEx);
        Matcher matcher = p.matcher(str);
        return matcher.replaceAll("").trim();
    }

}

 Edittext的TextWatcher监听方法中使用:

public class ChineseActivity extends AppCompatActivity implements TextWatcher {
    private EditText et;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_chinese);
        et=findViewById(R.id.et);
        et.addTextChangedListener(this);
    }

    @Override
    public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void afterTextChanged(Editable editable) {
       String s=FilterUtils.filterChinese(et.getText().toString().trim());
        Log.e("=====dggfh===",s);

    }
}