Question

我正在尝试从我的服务类中启动浏览器，但它不起作用。下面是我的服务类的onStartCommand方法的示例代码：

    Toast.makeText(context, "Service called", Toast.LENGTH_SHORT).show();

    final MyDBHandler dbHandler = new MyDBHandler(context, null, null, 1);
    final Context cont = context;

    String expectedPattern = "MMM d, yyyy";
    sdf = new SimpleDateFormat(expectedPattern);

    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            try {
                Toast.makeText(cont, "In service handler", Toast.LENGTH_SHORT).show();
                dbContacts = dbHandler.getAllContacts();
                for(Contact cn : dbContacts) {
                    Toast.makeText(cont, "Checking contacts...", Toast.LENGTH_SHORT).show();
                    String url = "http://www.example.com/send_sms?from=123456789&to=";
                    final String phone = cn.getContactphone();
                    String dob = cn.getContactdob();
                    dobDate = sdf.parse(dob);
                    today = new Date();
                    long diffInMs = today.getTime() - dobDate.getTime();
                    int diff = (int) diffInMs / (1000 * 60 * 60 * 24);
                    Toast.makeText(cont, "Diff is " + diff, Toast.LENGTH_SHORT).show();

                    if(diff == 0) {
                        String smsBody = "Welcome message";

                        String SMS_SENT = "SMS_SENT";
                        String SMS_DELIVERED = "SMS_DELIVERED";

                        PendingIntent sentPendingIntent = PendingIntent.getBroadcast(cont, 0, new Intent(SMS_SENT), 0);
                        PendingIntent deliveredPendingIntent = PendingIntent.getBroadcast(cont, 0, new Intent(SMS_DELIVERED), 0);

                        // When SMS has been sent
                        cont.registerReceiver(new BroadcastReceiver() {
                            @Override
                            public void onReceive(Context cont, Intent intent) {
                                switch (getResultCode()) {
                                    case Activity.RESULT_OK:
                                        Toast.makeText(cont, "SMS sent successfully to " + phone, Toast.LENGTH_SHORT).show();
                                        break;

                                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                                        Toast.makeText(cont, "Generic failure cause", Toast.LENGTH_SHORT).show();
                                        break;
                                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                                        Toast.makeText(cont, "Service is currently unavailable", Toast.LENGTH_SHORT).show();
                                        break;
                                    case SmsManager.RESULT_ERROR_NULL_PDU:
                                        Toast.makeText(cont, "No pdu provided", Toast.LENGTH_SHORT).show();
                                        break;
                                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                                        Toast.makeText(cont, "Radio was explicitly turned off", Toast.LENGTH_SHORT).show();
                                        break;
                                }
                            }
                        }, new IntentFilter(SMS_SENT));

                        // When SMS has been delivered
                        cont.registerReceiver(new BroadcastReceiver() {
                            @Override
                            public void onReceive(Context cont, Intent intent) {
                                switch (getResultCode()) {
                                    case Activity.RESULT_OK:
                                        Toast.makeText(cont, "SMS delivered", Toast.LENGTH_SHORT).show();
                                        break;
                                    case Activity.RESULT_CANCELED:
                                        Toast.makeText(cont, "SMS not delivered", Toast.LENGTH_SHORT).show();
                                        break;
                                }
                            }
                        }, new IntentFilter(SMS_DELIVERED));

                        // Get default instance of SmsManager
                        SmsManager smsManager = SmsManager.getDefault();

                        // Send a text-based SMS
                        Toast.makeText(cont, "About to launch browser", Toast.LENGTH_SHORT).show();
                        url += phone + "&msg=" + smsBody;
                        Toast.makeText(cont, "URL is " + url, Toast.LENGTH_LONG).show();
                        Uri uriUrl = Uri.parse(url);
                        Intent launchBrowser = new Intent(Intent.ACTION_VIEW, uriUrl);
                        startActivity(launchBrowser);
                    }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    };

    Runnable r = new Runnable() {
        @Override
        public void run() {
            handler.sendEmptyMessage(0);
        }
    };

    Thread stephThread = new Thread(r);
    stephThread.start();

    stopSelf();

    return START_STICKY;

最后一个Toast显示正确的URL，但它不会启动浏览器。

我怎么能纠正这个？如何让浏览器与后台进行交互，即调用url但是浏览器不会弹出？

提前致谢！

Answer 1

我在link找到了解决方案编译所需的apache配置后，我需要使用AsyncTask，如下所示（在doInBackground（）方法中）：

        try {
            URL url = new URL(params[i]);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestMethod("GET");
            int statusCode = urlConnection.getResponseCode();
            if (statusCode == 200) {
                InputStream it = new BufferedInputStream(urlConnection.getInputStream());
                InputStreamReader read = new InputStreamReader(it);
                BufferedReader buff = new BufferedReader(read);
                StringBuilder dta = new StringBuilder();
                String chunks ;
                while((chunks = buff.readLine()) != null)
                {
                    dta.append(chunks);
                }
            }
            else {
                //Do else here
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

浏览器未从服务中启动

1 个答案: