import android.app.Activity;

import android.os.Bundle;

import android.text.InputFilter;

import android.text.method.NumberKeyListener;

import android.widget.EditText;

/**

 * @author xirtam

 * @qq 751348449

 */

public class MainActivity extends Activity {

    private EditText et;

    public static final int TYPE_1 = -1;// 为了避免和android自带的冲突使用-1

    public static final String TYPE_1_String = "1234567890Xx";// 限制只能输入此字符串中的字符

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

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

        // et.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL|

        // InputType.TYPE_CLASS_NUMBER);//浮点数

        // et.setInputType(InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);//邮箱

        // et.setInputType(InputType.TYPE_CLASS_PHONE);//电话号

        // 一下两行就实现了限制输入身份证号

        this.setMaxLength(18);

        et.setKeyListener(new myInputListener(TYPE_1, TYPE_1_String));

    }

    /**

     * 自定义输入监听器

     *

     * @author xirtam

     */

    private class myInputListener extends NumberKeyListener {

        private int type;

        private String chars;

        public myInputListener(int type, String chars) {

            this.type = type;

            this.chars = chars;

        }

        @Override

        public int getInputType() {

            return type;

        }

        @Override

        protected char[] getAcceptedChars() {

            return chars.toCharArray();

        }

    }

    /**

     * 设置可输入最大长度

     *

     * @param len

     *            长度

     */

    public void setMaxLength(int len) {

        et.setFilters(new InputFilter[] { new InputFilter.LengthFilter(len) });

    }

}