BroadcastReceiver 未收到 SMS 消息

Question

我正在尝试编写一个广播接收器来处理收到的 SMS，并启动一个警报对话框来接收来自用户的输入。当主应用程序 (MainActivity) 关闭（通过滑动）时，此广播接收器有望工作。

根据用户的输入，接收方在通过警报请求用户许可后，将一些内容添加到 android 文件系统中的文件中。我注意到根本没有调用 BroadcastReceiver 的 onReceive

我正在使用 MainActivity 中的 requestPermissions 从用户那里获取权限
我正在启动一个名为 ServiceCommunicator 的服务
ServiceCommunicator 注册接收器以收听 SMS
接收方显示警告消息

我也试过没有 ServiceCommunicator（Receiver 是在 MainActivity 本身注册的）

在上述两种情况下，都不会触发接收器的 onCreate。接收器在 adb shell 命令中列出：

adb shell cmd package query-receivers --brief -a android.provider.Telephony.SMS_RECEIVED

MainActivity 具有以下作为 onCreate 方法的一部分：


int PERMISSION_ALL = 1;
String[] PERMISSIONS = {
        android.Manifest.permission.RECEIVE_SMS,
        android.Manifest.permission.SEND_SMS,
};

ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);

Intent serviceIntent = new Intent(this, ServiceCommunicator.class);
startService(serviceIntent);

...

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults)
    {
        switch(requestCode)
        {
            case MY_PERMISSIONS_REQUEST_RECEIVE_SMS:
            {
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
                {
                    Toast.makeText(this, "Thanks for SMS receive permissions", Toast.LENGTH_LONG).show();
                }
                else
                {
                    Toast.makeText(this, "SMS can't be received", Toast.LENGTH_LONG).show();
                }
                break;
            }
            case MY_PERMISSIONS_REQUEST_SEND_SMS:
            {
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    Toast.makeText(getApplicationContext(), "Thanks for SMS send permissions",
                            Toast.LENGTH_LONG).show();
                } else {
                    Toast.makeText(getApplicationContext(),
                            "SMS can't be sent", Toast.LENGTH_LONG).show();
                }
                break;
            }
        }
        return;
    }

ServiceCommunicator 具有以下内容：

receiverIntentFilter = new IntentFilter();
receiverIntentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
myReceiver = new MyReceiver();

// Register SMS event receiver

registerReceiver(myReceiver, receiverIntentFilter);

接收方在 onReceive 中有以下内容：


if (intent.getAction() == "android.provider.Telephony.SMS_RECEIVED")
{

...

Intent alertDialogIntent = new Intent(context, AlertDialogActivity.class);
                        alertDialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
alertDialogIntent.putExtra("ALERT_MSG", alertMsg);
alertDialogIntent.putExtra("MESSAGE", "\n" + msg);
context.startActivity(alertDialogIntent);

}

AlertDialogActivity 具有以下内容：


AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder
        .setTitle("Add information to system?")
        .setMessage(alertMsg)
...

Manifest.xml 有以下内容。更新了文件（抱歉，之前错过了）：

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

        <receiver android:priority="2147483647" android:name=".MyReceiver" android:enabled="true" android:exported="true">
            <intent-filter>
                <action android:name="android.provider.Telephony.SMS_RECEIVED">

                </action>
            </intent-filter>
        </receiver>
        <service android:process="com.example.rtien.ServiceCommunicator" android:enabled="true" android:exported="true" android:stopWithTask="false" android:name="com.example.rtien.ServiceCommunicator" />
        <activity android:name=".MainActivity" android:theme="@style/Theme.AppCompat">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

预期结果：当 MainActivity 关闭时，接收器应该运行在后台。应该触发接收器中的 onReceive 方法。应显示警报消息，并将数据添加到文件

观察结果：接收者的onReceive在MainActivity活动时触发，但在关闭时不触发

Answer 1

发生这种情况是因为当您从最近托盘中滑动应用程序时，它会在许多设备上完全关闭该应用程序，从而导致您的服务也关闭并注销您的广播接收器。

尝试此代码以避免终止您的服务，并确保您拥有 auto-start 权限和所有其他权限

将其添加到您的服务中

@Override
    public void onTaskRemoved(Intent rootIntent) {
        try {
            Intent restartService = new Intent(getApplicationContext(),this.getClass());
            restartService.setPackage(getPackageName());
            PendingIntent restartServicePI = PendingIntent.getService(
                        getApplicationContext(), 1, restartService,
                        PendingIntent.FLAG_ONE_SHOT);
            AlarmManager alarmService = (AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);
                alarmService.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 1000, restartServicePI);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

BroadcastReceiver 未收到 SMS 消息

SMS Message not received by BroadcastReceiver

android

service

broadcastreceiver