为什么我的 ReceiveMessage.java class 没有将 SMS 正文设置为我的文本视图？

Question

我在 activity 中有一个按钮。通过单击它，会发送一条带有预定义正文和 phone 地址的短信，然后会自动将包含代码的回复短信发送到我的手机 phone 。我需要接收代码并将其设置到我的文本视图中。我该如何解决？我有两个活动：MainActivity 和 MessageReceiver。

    //MessageReceiver.java
    public class MessageReceiver extends BroadcastReceiver {
        public void onReceive(Context context, Intent intent) {

        Bundle bundle = intent.getExtras();
        SmsMessage[] messages;
        String str = "";

        if (bundle != null) {
            Object[] pdus = (Object[]) bundle.get("pdus");
            messages = new SmsMessage[pdus != null ? pdus.length : 0];
            for (int i = 0; i < messages.length; i++) {
                messages[i] = SmsMessage.createFromPdu((byte[]) (pdus != null ? pdus[i] : null));
                str += messages[i].getOriginatingAddress();
                str += ":";
                str += messages[i].getMessageBody();
                str += "\n";
            }
            Intent broadcastIntent = new Intent();
            broadcastIntent.setAction("SMS_RECIEVED_ACTION");
            broadcastIntent.putExtra("message", str);
            context.sendBroadcast(broadcastIntent);}}}

     //MainActivity.java
     private BroadcastReceiver intentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            TextView chargeText = (TextView) findViewById(R.id.chargeText);
            Log.d("myTag", "is chargeText null? : " + (chargeText==null));
            Log.d("myTag", "The text is: " + (intent.getExtras().getString("message")));
            chargeText.setText(intent.getExtras().getString("message"));
        }
    };

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        intentFilter = new IntentFilter();
        intentFilter.addAction("SMS_RECEIVED_ACTION");
 button3 = (Button) findViewById(R.id.button);

 button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                String mymsg = "CMDACC_1234";
                String thenumber = "09380638202";
                SendChargeMessage(thenumber, mymsg);
            }
        });}

    public void SendChargeMessage(String thenumber, String mymsg) {
        String SENT = "Message sent";
        String DELIVERED = "Message delivered";
        SmsManager smsManager = SmsManager.getDefault();
        Context curContext = this.getApplicationContext();
        PendingIntent sentPending = PendingIntent.getBroadcast(curContext,
                0, new Intent("SENT"), 0);
        curContext.registerReceiver(new BroadcastReceiver() {
            @Override
            public void onReceive(Context arg0, Intent arg1) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(getBaseContext(), "Sent.",
                                Toast.LENGTH_LONG).show();
                        break;
                        case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Toast.makeText(getBaseContext(), "Not Sent: Generic failure.",
                                Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                        Toast.makeText(getBaseContext(), "Not Sent: No service (possibly, no SIM-card).",
                        Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(getBaseContext(), "Not Sent: Null PDU.",
                        Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(getBaseContext(), "Not Sent: Radio off (possibly, Airplane mode enabled in Settings).",
                                Toast.LENGTH_LONG).show();
                        break;
                }
            }
        }, new IntentFilter("SENT"));

        PendingIntent deliveredPending = PendingIntent.getBroadcast(curContext,
                0, new Intent("DELIVERED"), 0);

        curContext.registerReceiver(
                new BroadcastReceiver() {
                    @Override
                    public void onReceive(Context arg0, Intent arg1) {
                        switch (getResultCode()) {
                            case Activity.RESULT_OK:
                                Toast.makeText(getBaseContext(), "Delivered.",
                                        Toast.LENGTH_LONG).show();
                                break;
                            case Activity.RESULT_CANCELED:
                                Toast.makeText(getBaseContext(), "Not Delivered: Canceled.",
                                        Toast.LENGTH_LONG).show();
                                break;
                        }
                    }
                }, new IntentFilter("DELIVERED"));

        PackageManager pm = this.getPackageManager();

        if (!pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY) &&
                !pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY_CDMA)) {
            Toast.makeText(this, "Sorry, your device probably can't send SMS...", Toast.LENGTH_SHORT).show();
        } else {
            smsManager.sendTextMessage("09380638202", null, "CMDACC_1234", sentPendin

g, deliveredPending);
                //chargeText.setText(SMSBody1);
            }
        }

///Edited

 @Override
protected void onResume(){
    super.onResume();
    IntentFilter intentFilter;
    intentFilter = new IntentFilter();
    intentFilter.addAction("SMS_RECEIVED_ACTION");

    BroadcastReceiver intentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            TextView chargeText = (TextView) findViewById(R.id.chargeText);
            Log.d("myTag", "is chargeText null? : " + (chargeText==null));

            Log.d("myTag", "The text is: " + (intent.getExtras().getString("message")));

            String text = intent.getExtras().getString("message").toString(); // let's try this with toString() so we are very explicit about it

            Log.d("myTag", "The converted text is: " + text);

            chargeText.setText(text);
        }
    };

    registerReceiver(intentReceiver , intentFilter);

} }

manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.dearzeinab.emaapplication">

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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name="com.example.dearzeinab.emaapplication.MessageReceiver" android:enabled="true">
            <intent-filter android:priority="2147483647">
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
            </intent-filter>
        </receiver>

    </application>

</manifest>

Answer 1

您需要注册您的接收器。

像这样：

getActivity().registerReceiver(intentReceiver, new IntentFilter("SMS_RECIEVED_ACTION"));

只有这样它才会起作用。

https://developer.android.com/reference/android/content/BroadcastReceiver

https://developer.android.com/guide/components/broadcasts

它在您的代码中应该是这样的：

//MainActivity.java
    private BroadcastReceiver intentReceiver; // do not set it up here. We'll set it and register it onCreate(), but we'll keep it here so it stays on scope of every other function
    private IntentFilter intentFilter; // same for the filter

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // We'll set up the receiver here, after the activity starts
        intentReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                TextView chargeText = (TextView) findViewById(R.id.chargeText);
                Log.d("myTag", "is chargeText null? : " + (chargeText==null));

                Log.d("myTag", "The text is: " + (intent.getExtras().getString("message")));

                String text = intent.getExtras().getString("message").toString(); // let's try this with toString() so we are very explicit about it

                Log.d("myTag", "The converted text is: " + text);

                chargeText.setText(text);
            }
        };

        // then, we'll create the filter
        intentFilter = new IntentFilter();

        intentFilter.addAction("SMS_RECEIVED_ACTION");
        button3 = (Button) findViewById(R.id.button);

        button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                String mymsg = "CMDACC_1234";
                String thenumber = "09380638202";
                SendChargeMessage(thenumber, mymsg);
            }
        });

        registerReceiver(intentReceiver , intentFilter); // registering
    }

    public void SendChargeMessage(String thenumber, String mymsg) {
        String SENT = "Message sent";
        String DELIVERED = "Message delivered";
        SmsManager smsManager = SmsManager.getDefault();
        Context curContext = this.getApplicationContext();
        PendingIntent sentPending = PendingIntent.getBroadcast(curContext, // Are you sure you want to create a new intent here?
                0, new Intent("SENT"), 0);
        curContext.registerReceiver(new BroadcastReceiver() { // and are you sure this is supposed to be a new receiver as well? Are you registering it like we did with iontentReceiver?
            @Override
            public void onReceive(Context arg0, Intent arg1) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(getBaseContext(), "Sent.",
                                Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Toast.makeText(getBaseContext(), "Not Sent: Generic failure.",
                                Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                        Toast.makeText(getBaseContext(), "Not Sent: No service (possibly, no SIM-card).",
                                Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(getBaseContext(), "Not Sent: Null PDU.",
                                Toast.LENGTH_LONG).show();
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(getBaseContext(), "Not Sent: Radio off (possibly, Airplane mode enabled in Settings).",
                                Toast.LENGTH_LONG).show();
                        break;
                }
            }
        }, new IntentFilter("SENT"));

        PendingIntent deliveredPending = PendingIntent.getBroadcast(curContext, 
                0, new Intent("DELIVERED"), 0);

        curContext.registerReceiver( 
                new BroadcastReceiver() {
                    @Override
                    public void onReceive(Context arg0, Intent arg1) {
                        switch (getResultCode()) {
                            case Activity.RESULT_OK:
                                Toast.makeText(getBaseContext(), "Delivered.",
                                        Toast.LENGTH_LONG).show();
                                break;
                            case Activity.RESULT_CANCELED:
                                Toast.makeText(getBaseContext(), "Not Delivered: Canceled.",
                                        Toast.LENGTH_LONG).show();
                                break;
                        }
                    }
                }, new IntentFilter("DELIVERED"));

        PackageManager pm = this.getPackageManager();

        if (!pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY) &&
                !pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY_CDMA)) {
            Toast.makeText(this, "Sorry, your device probably can't send SMS...", Toast.LENGTH_SHORT).show();
        } else {
            smsManager.sendTextMessage("09380638202", null, "CMDACC_1234", sentPending, deliveredPending);
            //chargeText.setText(SMSBody1);
        }
    }

我在你的代码中看到的：

您在 onStart() 之前注册了接收器。这个接收器在每个方法的范围内。但是没有注册
您在 onResume() 中创建了一个新的接收器，其名称与前一个接收器相同 (broadcastReceiver)。您正确地注册了这个，但它超出了每个功能的范围。
这意味着您正在尝试访问一个未注册的接收器，并且您正在注册一个具有相同名称但超出范围的接收器。

如果这行不通，至少你离成功又近了一步;)

如果你想要我的意见，你可以：

研究范围及其在面向对象编程中的工作原理；
研究接收者、意图以及如何注册它们。

希望对您有所帮助。祝你好运。

Answer 2

在您的接收器中使用以下代码

 @Override
    public void onReceive(Context context, Intent intent) {

        final Bundle bundle = intent.getExtras();
        try {
            if (bundle != null) {
                Object[] pdusObj = (Object[]) bundle.get("pdus");
                for (Object aPdusObj : pdusObj) {
                    SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) aPdusObj);
                    String senderAddress = currentMessage.getDisplayOriginatingAddress();
                    String message = currentMessage.getDisplayMessageBody();

                    Log.d(TAG, "Received SMS: " + message + ", Sender: " + senderAddress);

                    // if the SMS is not from our gateway, ignore the message
                    if (!senderAddress.toLowerCase().contains(GlobalApplication.SMS_ORIGIN.toLowerCase())) {
                        return;
                    }

                    // verification code from sms
                    String verificationCode = getVerificationCode(message);

                    Log.d(TAG, "OTP received: " + verificationCode);

                    mListener.otpReceived(verificationCode);

                }
            }
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
    }

    /**
     * Getting the OTP from sms message body
     * ':' is the separator of OTP from the message
     *
     * @param message
     * @return
     */
    private String getVerificationCode(String message) {
        String str_msg = message.replace("Dear Customer,","");
        str_msg = str_msg.replace("is your one time password (OTP). Please enter the OTP to proceed.","");
        str_msg = str_msg.replace("Thank you,","");
        str_msg = str_msg.replace("ChannelPaisa","");
        str_msg = str_msg.replace("\n","");

        str_msg= str_msg.trim().toString();

        return str_msg;
    }

为什么我的 ReceiveMessage.java class 没有将 SMS 正文设置为我的文本视图？

Why doesn't my ReceiveMessage.java class set SMS body to my textview?

java

sms

android

textview