Android EditText禁止输入空格和特殊字符

有时候我们需要限制EditText输入的字符类型，如空格，特殊字符等，这时候我们可以使用系统提供的输入过滤器——InputFilter。具体实现如下：

/**
     * 禁止EditText输入空格
     * @param editText
     */
    public static void setEditTextInhibitInputSpace(EditText editText){
        InputFilter filter=new InputFilter() {
            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                if(source.equals(" ")return "";
                else return null;
            }
        };
        editText.setFilters(new InputFilter[]{filter});
    }

/**
     * 禁止EditText输入特殊字符
     * @param editText
     */
    public static void setEditTextInhibitInputSpeChat(EditText editText){

        InputFilter filter=new InputFilter() {
            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                String speChat="[`~!@#$%^&*()+=|{}':;',\\[\\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]";
                Pattern pattern = Pattern.compile(speChat);
                Matcher matcher = pattern.matcher(source.toString());
                if(matcher.find())return "";
                else return null;
            }
        };
        editText.setFilters(new InputFilter[]{filter});
    }

import android.text.InputFilter;
import android.text.Spanned;
import android.widget.EditText;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Description：禁止输入特殊字符
 * @author SGF
 * date:
 */
public class InputFilterUtils {
    /**
     * 禁止EditText输入空格
     *
     * @param editText
     */
    public static void setEditTextInhibitInputSpaChat(EditText editText) {
        InputFilter filter_space = new InputFilter() {
            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                if (source.equals(" "))
                    return "";
                else
                    return null;
            }
        };
        InputFilter filter_speChat = new InputFilter() {
            @Override
            public CharSequence filter(CharSequence charSequence, int i, int i1, Spanned spanned, int i2, int i3) {
                String speChat = "[`~!@#_$%^&*()+=|{}':;',\\[\\].<>/?~！@#￥%……&*（）— +|{}【】‘；：”“’。，、？]";
                Pattern pattern = Pattern.compile(speChat);
                Matcher matcher = pattern.matcher(charSequence.toString());
                if (matcher.find()) return "";
                else return null;
            }
        };
        editText.setFilters(new InputFilter[]{filter_space, filter_speChat});
    }
}

InputFilterUtils.setEditTextInhibitInputSpaChat(et_unregistered_name);