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我正在研究需要读取传入消息的应用程序。现在,我发现我需要使用BroadcastReceiver类中的onReceive方法。现在我知道java不允许扩展两个类,所以如何让它工作,我一直坚持这个从很长一段时间,请帮助!如果还有其他方法可以做到这一点,请做引用。如何在另一个类的活动中设置侦听器?
公共类SMS扩展活动按钮btnSendSMS; EditText txtPhoneNo; EditText txtMessage;
/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.sms); btnSendSMS = (Button) findViewById(R.id.btnSendSMS); txtPhoneNo = (EditText) findViewById(R.id.txtPhoneNo); btnSendSMS.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { String phoneNo = txtPhoneNo.getText().toString(); if (phoneNo.length()>0) sendSMS(phoneNo, phoneNo); else Toast.makeText(getBaseContext(), "Please enter a valid Phone Number.", Toast.LENGTH_SHORT).show(); } }); } private void sendSMS(String phoneNumber, String message) { PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this, SMS.class), 0); SmsManager sms = SmsManager.getDefault(); sms.sendTextMessage(phoneNumber, null, message, pi, null); } Context context = getApplicationContext(); Intent intent = new Intent(); object.onReceive(context, intent); }
类SMSBroadcastReceiver扩展广播接收器{
private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED"; private static final String TAG = "SMSBroadcastReceiver"; @Override public void onReceive(Context context, Intent intent) { Log.i(TAG, "Intent recieved: " + intent.getAction()); Toast.makeText(context, "HI", Toast.LENGTH_SHORT).show(); if (intent.getAction().equals(SMS_RECEIVED)) { Bundle bundle = intent.getExtras(); if (bundle != null) { Object[] pdus = (Object[])bundle.get("pdus"); final SmsMessage[] messages = new SmsMessage[pdus.length]; for (int i = 0; i < pdus.length; i++) { messages[i] = SmsMessage.createFromPdu((byte[])pdus[i]); } if (messages.length > -1) { Toast.makeText(context, "Message recieved: " + messages[0].getMessageBody(), 7000).show(); } } } } }
在收到消息后,您试图达到什么目的?提供更多信息 – Libin
@利宾其实我只需要访问活动开始后收到的最后一条消息。 – achiever202
使你的'BroadcastReceiver'成为你的'Activity'的一个内部类。 – Squonk