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qrcodes 및 nfc 태그를 검색하는 앱이 있습니다. qrcode를 스캔 할 때 일부 문자열을 엑스트라 (qrcode의 내용)로 넣고 setAction을 com.carefreegroup.QRCODE_ACTION으로 설정하고 사용자 정의 작업을 수행 한 다음 startActivity(intent)을 호출합니다.android intent.getAction() null을 반환했습니다.
수신 활동에서 intent.getAction()은 null을 반환합니다. 호출 활동과 동일한 동작으로 매니페스트에서받는 활동에 대한 의도 필터를 설정했습니다.
왜 getAction이 null입니까?
public static final String CUSTOM_QRCODE_ACTION = "com.carefreegroup.QRCODE_ACTION";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.qrloggedinmain);
nfcscannerapplication = (NfcScannerApplication) getApplication();
////////////////////////get company options///////////////////////////////
SharedPreferences appSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
tagTouchInterval = appSharedPrefs.getString("10", null);
Long tagtouchinteval = new Long(tagTouchInterval);
companyOptionTime = 1000* 60 * tagtouchinteval ;
Button ScanQrCode = (Button)findViewById(R.id.buttonqrscanner);
ScanQrCode.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.e(TAG, "onclicked scan");
Intent intent = new Intent(
"com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}
});
}// end of onCreate
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
Log.e(TAG, "in onActivityResult");
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
Log.e(TAG, "result ok");
///////////////////////////////
tagScanTime = new DateTime();
thirtySecsAgo = tagScanTime.minus(30000);
DateTimeFormatter df = DateTimeFormat.forPattern("dd/MMM/yy h:mmaa");
String formattedScanTime = df.print(tagScanTime);
Log.e(TAG, "formatted tag scan time = " + formattedScanTime);
String formattedthirtysecsAgoTime = df.print(thirtySecsAgo);
Log.e(TAG, "formatted thity secs ago time = " + formattedthirtysecsAgoTime);
String contents = intent.getStringExtra("SCAN_RESULT");
Toast.makeText(this, "scanner has found " + contents,
Toast.LENGTH_LONG).show();
String[] splitPayload = contents.split("@");
type = splitPayload[0];
compId = splitPayload[1];
personId = splitPayload[2];
personName = splitPayload[3];
Intent QRDataIntent = new Intent(this,
NfcscannerActivity.class);
intent.putExtra("type", type);
intent.putExtra("compId", compId);
intent.putExtra("personId", personId);
intent.putExtra("personName", personName);
intent.setAction(CUSTOM_QRCODE_ACTION);
intent.setType("text/plain");
startActivity(QRDataIntent);
.
String intentAction = intent.getAction();
if (intentAction.equalsIgnoreCase(QRCODE_ACTION)) {
Log.e(TAG, "QR Code scanned");
String _type = intent.getStringExtra("type");
String _compId = intent.getStringExtra("compId");
String _personId = intent.getStringExtra("personId");
String _personName = intent.getStringExtra("personName");
Log.e(TAG, "payload = " + _type + " " + _compId + " " + _personId + " " + _personName);
.
<activity android:name=".NfcscannerActivity" >
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
<intent-filter>
<action android:name="com.carefreegroup.QRCODE_ACTION" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
는 [갱신 1] 이것은하시면 자동 스캔 할 ZXing 라이브러리를 사용하여 전체의 활동이다. 그런 다음 캡쳐 된 데이터를 인 텐트로 설정하여 엑스트라로 지정한 다음 startActivity()로 다음 활동을 명시 적으로 호출합니다.
package com.carefreegroup;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class QrLoggedIn extends Activity{
private static final String TAG = QrLoggedIn.class.getSimpleName();
private NfcScannerApplication nfcscannerapplication;
private String tagTouchInterval;
private long companyOptionTime;
private DateTime tagScanTime;
private DateTime thirtySecsAgo;
private Boolean carerLoggedIn;
private String type;
private String personId;
private String personName;
private String compId;
private Cursor cursor;
static final String CARER_TYPE = "2";
static final String CLIENT_TYPE = "1";
private final String IN = "in";
private final String OUT = "out";
private ContentValues values;
public static final String CUSTOM_QRCODE_ACTION = "com.carefreegroup.QRCODE_ACTION";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.qrloggedinmain);
nfcscannerapplication = (NfcScannerApplication) getApplication();
////////////////////////get company options///////////////////////////////
SharedPreferences appSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
tagTouchInterval = appSharedPrefs.getString("10", null);
Long tagtouchinteval = new Long(tagTouchInterval);
companyOptionTime = 1000* 60 * tagtouchinteval ;
Button ScanQrCode = (Button)findViewById(R.id.buttonqrscanner);
ScanQrCode.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.e(TAG, "onclicked scan");
Intent intent = new Intent(
"com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}
});
}// end of onCreate
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
Log.e(TAG, "in onActivityResult");
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
Log.e(TAG, "result ok");
///////////////////////////////
tagScanTime = new DateTime();
thirtySecsAgo = tagScanTime.minus(30000);
DateTimeFormatter df = DateTimeFormat.forPattern("dd/MMM/yy h:mmaa");
String formattedScanTime = df.print(tagScanTime);
Log.e(TAG, "formatted tag scan time = " + formattedScanTime);
String formattedthirtysecsAgoTime = df.print(thirtySecsAgo);
Log.e(TAG, "formatted thity secs ago time = " + formattedthirtysecsAgoTime);
String contents = intent.getStringExtra("SCAN_RESULT");
Toast.makeText(this, "scanner has found " + contents,
Toast.LENGTH_LONG).show();
String[] splitPayload = contents.split("@");
type = splitPayload[0];
compId = splitPayload[1];
personId = splitPayload[2];
personName = splitPayload[3];
Intent QRDataIntent = new Intent(this,
NfcscannerActivity.class);
intent.putExtra("type", type);
intent.putExtra("compId", compId);
intent.putExtra("personId", personId);
intent.putExtra("personName", personName);
intent.setAction(CUSTOM_QRCODE_ACTION);
intent.setType("text/plain");
startActivity(QRDataIntent);
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
Log.e(TAG, "There's a problem with the scan. Scan result failed");
Toast.makeText(this, "There's a problem with the scan. Scan result failed",
Toast.LENGTH_LONG).show();
}
}
}
}
.
수신 활동의 스 니펫입니다.
String intentAction = intent.getAction();
Log.e(TAG, "action of intent = " + intentAction);
if(intentAction.equalsIgnoreCase(NFC_ACTION)){
Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
tagId = bytesToHexString(tag.getId());
if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) {
Log.e(TAG, "NFC Tag scanned");
// //////////////////////////////////////////////////////////////////////
// get the messages from the intent
Parcelable[] rawMsgs = intent
.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
if (rawMsgs != null) {
msgs = new NdefMessage[rawMsgs.length];
for (int i = 0; i < rawMsgs.length; i++) {
msgs[i] = (NdefMessage) rawMsgs[i];
}
}
} else {
Log.e(TAG, "ndef not discovered!!!!!!");
}
// ////////////////////////////////////////////////////////////////////////////////////
// process the msgs array
for (int i = 0; i < msgs.length; i++) {
NdefRecord[] records = msgs[i].getRecords();
Log.e(TAG, "ndefrecord has a length of " + records.length);
tr = parse(records[i]);
payload = tr.getText();
Log.e(TAG, "TextRecord.text = " + tr.getText());
}
// /////////////////////////////////////////////////// split the payload
// using delimiter. assign value at position[0] to tagType
String[] splitPayload = payload.split("¦");
tagType = splitPayload[0];
tagCompany = splitPayload[1];
tagPerson = splitPayload[2];
tagUserName = splitPayload[3];
}else if (intentAction.equalsIgnoreCase(QRCODE_ACTION)) {
Log.e(TAG, "QR Code scanned");
String _type = intent.getStringExtra("type");
String _compId = intent.getStringExtra("compId");
String _personId = intent.getStringExtra("personId");
String _personName = intent.getStringExtra("personName");
Log.e(TAG, "payload = " + _type + " " + _compId + " " + _personId + " " + _personName);
사용'문자열 intentAction = intent.getAction를(); if (intentAction.equalsIgnoreCase (QRCODE_ACTION)) {'? 변수'intent'는 어떻게 설정됩니까? –
@DavidWasser 안녕하세요, 의도를 설정하고 수신하는 방법을 보여주는 두 가지 코드 스 니펫을 포함하도록 내 게시물을 업데이트했습니다. 감사. – turtleboy
@DavidWasser oh yes 죄송합니다. intent.getAction()은 수신 작업의 onCreate 메서드에 있습니다. – turtleboy