dependencies { compile 'com.yuyh.bankcardformat:library:1.0.3' } <com.example.library.BandCardEditText android:id="@+id/et" android:layout_width="match_parent" android:layout_height="30dp" android:text="622700187301032701" android:background="#cccccc"/> tv = (TextView) findViewById(R.id.tv); editText = (BandCardEditText) findViewById(R.id.et); editText.setBankCardListener(new BankCardListener() { @Override public void success(String name) { tv.setText("所属银行：" + name); } @Override public void failure() { tv.setText("所属银行："); } }); // 或者直接检测 String carnum = "622700187301032701"; if (BankCardUtils.checkBankCard(carnum)) { char[] ss = carnum.toCharArray(); String bank = BankCardUtils.getNameOfBank(ss, 0); }