我想我的应用程序振动设备使用我的应用程序的自定义振动模式。我可以从mainactivity或任何activity执行此操作，但我不知道为什么它不能在java类（smsreceiver.java）中工作。
我想如果我用 ...context.getApplicationContext.getSystemService(Context.VIBRATOR_SERVICE); 它会得到mainactivity上下文，因此会有点像我在mainactivity中，它会震动。但是没有。它不会从接收器类振动。
如何从smsreceiver.java类振动手机？
smsreceiver.java文件：

package com.app.name.app;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Vibrator;
import android.telephony.SmsMessage;
import android.util.Log;
import android.widget.Toast;

public class SmsReceiver extends BroadcastReceiver {
    private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(SMS_RECEIVED)) {
            Bundle bundle = intent.getExtras();

            if (bundle != null) {
                // get sms objects
                Object[] pdus = (Object[]) bundle.get("pdus");
                if (pdus.length == 0) {
                    return;
                }
                // large message might be broken into many
                SmsMessage[] messages = new SmsMessage[pdus.length];
                StringBuilder sb = new StringBuilder();

                for (int i = 0; i < pdus.length; i++) {
                    messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
                    sb.append(messages[i].getMessageBody());
                }

                String sender = messages[0].getOriginatingAddress();
                Log.d("SNDR", sender);
                String message = sb.toString();

                // prevent any other broadcast receivers from receiving broadcast
                abortBroadcast();
                if(!message.isEmpty())
                {
                    if(message == "!")
                    {
                        Vibrator v = (Vibrator)context.getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
                        v.cancel();

                        long[] longs = { 0, 75, 15, 100, 15, 100, 15, 75, 15 };
                        v.vibrate(longs, -1);
                    }
                }

                Toast.makeText(context, message, Toast.LENGTH_SHORT).show();

            }
        }
    }
}

mainactivity.java，on按钮单击：

switch(id)
{
    case R.id.action_search:
        Vibrator v = (Vibrator)getSystemService(Context.VIBRATOR_SERVICE);

        long[] longs = { 0, 75, 15, 100, 15, 100, 15, 75, 15 };
        v.vibrate(longs, -1);
        break;
    case R.id.action_settings:
        break;
}

这个相关的问题并不能解决这个问题。