Android 获取短信验证码，自动填充

1、申请权限

<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />

API>23动态申请权限

private static final String[] authBaseArr = {//申请类型
        Manifest.permission.RECEIVE_SMS,
        Manifest.permission.READ_SMS,
};
private static final int authBaseRequestCode = 1;

private boolean hasBasePhoneAuth() {
    PackageManager pm = getPackageManager();
    for (String auth : authBaseArr) {
        if (pm.checkPermission(auth, getPackageName()) != PackageManager.PERMISSION_GRANTED) {
            return false;
        }
    }
    return true;
}

private void initNavi() {
    // 申请权限
    if (android.os.Build.VERSION.SDK_INT >= 23) {
        if (!hasBasePhoneAuth()) {
            this.requestPermissions(authBaseArr, authBaseRequestCode);
            return;
        }
    }
}

2、自定义ContentObserver

/**
 * 作者：created by meixi
 * 邮箱：[email protected]
 * 日期：2019/12/11 17:37
 */
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");
        final String[] projection = new String[]{"address", "body"};
        Cursor c = mContext.getContentResolver().query(inboxUri, projection, "read=?", new String[]{"0"}, "date desc");
//        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"));

                LgqLogutil.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);
                    LgqLogutil.e("验证码》》》" + code);
                    ClipboardManager cmb = (ClipboardManager) mContext.getSystemService(Context.CLIPBOARD_SERVICE);
                    cmb.setText(code);

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

            }
            c.close();
        }

    }
}

3、activity实现代码

    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            if (msg.what == 1) {
                String code = (String) msg.obj;
                Log.e("lgq","短信===="+code);
//                mEtUserVerificationCode.setText(code);//填充
            }
        }
    };

SmsObserver mObserver = new SmsObserver(this, mHandler, 1);

Uri uri = Uri.parse("content://sms");
getContentResolver().registerContentObserver(uri, true, mObserver);

附：获取首条短信

        String code = "";

//        Uri inboxUri = Uri.parse("content://sms/inbox");
        Uri inboxUri = Uri.parse("content://sms");
        Cursor c = getContentResolver().query(inboxUri, null, null, null, "");
        if (c != null) {
            if (c.moveToFirst()) {
//            if (c.moveToNext()) {
                String address = c.getString(c.getColumnIndex("address"));
                String body = c.getString(c.getColumnIndex("body"));

                LgqLogutil.i("main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);
                    LgqLogutil.e("main验证码》》》" + code);
                    ClipboardManager cmb = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
                    cmb.setText(code);

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

            }
            c.close();
        }

注：有这个防护标志的，会获取失败