uniapp 做NFC读取功能 为什么卡片贴在手机时调用读取方法时读取不到 只能拿远贴近才能读取到

2***@qq.com (作者)

用的插件市场的uni-nfc

提供的方法 我定时调用了一下

2023-10-14 16:32

2***@qq.com (作者)

try {

var main = plus.android.runtimeMainActivity();

//console.log(main);

var Intent = plus.android.importClass('android.content.Intent');

// console.log(Intent);

var Activity = plus.android.importClass('android.app.Activity');

//console.log(Activity);

var PendingIntent = plus.android.importClass('android.app.PendingIntent');

// console.log(PendingIntent);

var IntentFilter = plus.android.importClass('android.content.IntentFilter');

                NfcAdapter = plus.android.importClass('android.nfc.NfcAdapter');  



                var _nfcAdapter = NfcAdapter.getDefaultAdapter(main);  



                var ndef = new IntentFilter('android.nfc.action.NDEF_DISCOVERED'); //NfcAdapter.ACTION_NDEF_DISCOVERED  

                // console.log(ndef);  

                var tag = new IntentFilter('android.nfc.action.TAG_DISCOVERED'); //NfcAdapter.ACTION_TECH_DISCOVERED  

                // console.log(tag);  

                var tech = new IntentFilter('android.nfc.action.TECH_DISCOVERED');  

                // console.log(tech);  

                var intentFiltersArray = [ndef, tag, tech];  



                var techListsArray = [  

                    ['android.nfc.tech.Ndef'],  

                    ['android.nfc.tech.IsoDep'],  

                    ['android.nfc.tech.NfcA'],  

                    ['android.nfc.tech.NfcB'],  

                    ['android.nfc.tech.NfcF'],  

                    ['android.nfc.tech.Nfcf'],  

                    ['android.nfc.tech.NfcV'],  

                    ['android.nfc.tech.NdefFormatable'],  

                    ['android.nfc.tech.MifareClassi'],  

                    ['android.nfc.tech.MifareUltralight']  

                ];  

                var _intent = new Intent(main, main.getClass());  

                // console.log(_intent);  

                _intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);  



                var pendingIntent = PendingIntent.getActivity(main, 0, _intent, 0);  

                var that = this;  

                //监听贴卡到手机事件   

                plus.globalEvent.addEventListener('newintent', e => {  

                    //获取ic卡数据  

                    that.NFCReadUID()  

                    //销毁监听事件  

                    plus.globalEvent.removeEventListener("newintent", false);  

                });  

                if (_nfcAdapter == null) {} else if (_nfcAdapter.isEnabled() == false) {} else {  

                    _nfcAdapter.enableForegroundDispatch(main, pendingIntent, IntentFilter, techListsArray);  

                }  

            } catch (e) {  

                //TODO handle the exception  

            }

2023-10-14 16:33

2***@qq.com (作者)

他只有把卡片拿远再贴一下才可以获取到

2023-10-14 16:34

II优选

回复 2***@qq.com: 没用过，可以试试插件市场的插件是不是也是这个样子的

2023-10-14 16:39