Android app获取短信验证码，并自动填充

实现方式思路：

1、系统有一个ContentObserver，可以在onChange(boolean selfChange, Uri uri)里过滤处理短信

2、必须要调用getContentResolver().registerContentObserver(uri, true, mObserver)，注册之后才可以监听（ContentObserver才会生效）

实现步骤：目前是在Activity中实现

1、先知道系统短信url:Uri uri = Uri.parse("content://sms")

2、这里可以继承ContentObserver,重新一个SmsObserver类处理短信

3、创建一个内容观察对象：SmsObserver mObserver = new SmsObserver(this, mHandler, MSG_RECEIVED_CODE)；这里只是用了Hnader进行处理接收验证码，也可以使用EventBus等进行处理消息传递

4、注册getContentResolver().registerContentObserver(uri, true, mObserver)

5、在opause()或onDestroy()中反注册getContentResolver().unregisterContentObserver(mObserver)

实现的关键源码：

1、Activity

private Handler mHandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        if (msg.what == MSG_RECEIVED_CODE) {
            String code = (String) msg.obj;
            mEtUserVerificationCode.setText(code);
        }
    }
};

mObserver = new SmsObserver(this, mHandler, MSG_RECEIVED_CODE);
Uri uri = Uri.parse("content://sms");
getContentResolver().registerContentObserver(uri, true, mObserver);

2、SmsObserver类

public class SmsObserver extends ContentObserver {

    private Context mContext;
    private Handler mHandler;
    private int mReceivedCode = 1;

    public SmsObserver(Context context, Handler handler, int received_code) {
        super(handler);
        mContext = context;
        mHandler = handler;
        mReceivedCode = received_code;
    }

    @Override
    public void onChange(boolean selfChange, Uri uri) {
        super.onChange(selfChange, uri);
        String code = "";
        if (uri.toString().equals("content://sms/raw")) {
            return;
        }
        Uri inboxUri = Uri.parse("content://sms/inbox");
        Cursor c = mContext.getContentResolver().query(inboxUri, null, null, null, "date desc");
        if (c != null) {
            if (c.moveToFirst()) {
                String address = c.getString(c.getColumnIndex("address"));
                String body = c.getString(c.getColumnIndex("body"));

                LogUtils.e("发件人为：" + address + "》》》》短信内容为：" + body);
                Pattern pattern = Pattern.compile("(\\d{4,6})");
                Matcher matcher = pattern.matcher(body);
                if (matcher.find()) {
                    code = matcher.group(0);
                    LogUtils.e("验证码》》》" + code);
                    ClipboardManager cmb = (ClipboardManager) mContext.getSystemService(Context.CLIPBOARD_SERVICE);
                    cmb.setText(code);

                    mHandler.obtainMessage(mReceivedCode, code).sendToTarget();
                }

            }
            c.close();
        }

    }
}

 

参考：https://blog.csdn.net/qq_31939617/article/details/77430688