Question

我目前正在开发一个简单的Android应用程序来读取短信并用TexView而不是Toast打印。但是在接收器活动中，我们不会初始化＆＃34; findbyid＆＃34;所以我们无法在textView中打印短信。现在我在Toast中显示短信进行测试，但我不希望它出现在toast中。我也读了问题/答案以及其他文章，但无法找到我想要的东西。

接收者活动，

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

public class read_sms extends BroadcastReceiver {
// Get the object of SmsManager


@Override
public void onReceive(Context context, Intent intent) {
    // TODO Auto-generated method stub
    final Bundle bundle = intent.getExtras();

    try {
        if (bundle != null) {
            final Object[] pdusObj = (Object[]) bundle.get("pdus");

            for (int i = 0; i < pdusObj.length; i++) {
                SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
                String phoneNumber = currentMessage.getDisplayOriginatingAddress();

                String senderNum = phoneNumber;
                String message = currentMessage.getDisplayMessageBody();

                Log.i("SmsReciver", "senderNum: " + senderNum + ", message: " + message);
                //ourSMS.getSmsDetails(senderNum, message);
                // Show SMS notification
                //Toast.makeText(context, "senderNum: "+ senderNum + ", message: " + message, Toast.LENGTH_LONG).show();


                if(message.equals("Milind")){
                    Toast.makeText(context, "sms matched", Toast.LENGTH_LONG).show();
                }else {
                    Toast.makeText(context, "not matched", Toast.LENGTH_LONG).show();
                }
            } // end of for loop
        } // bundle

    } catch (Exception e) {
        // TODO: handle exception
        Log.e("SmsReciver", "Exception smsReciver" + e);
    }

}

}

我的家庭活动是空的，因为我无法找到放在这里的代码。

public class home extends AppCompatActivity {

TextView SMS_textview;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.home);
    SMS_textview = (TextView) findViewById(R.id.sms_text);


}
}

Answer 1

将TextView更改为

public static TextView SMS_textview;

添加方法

public void recivedSms(String message)
{
    try
    {

     SMS_textview.setText(message);

    }
    catch (Exception e)
    {
    }
}

在read_sms类中，

在收到短信时添加以下代码

  home Sms = new home();
  Sms.recivedSms(message );

Answer 2

每当您在接收方收到文本时，请在您的活动中注册您的Receiver 在Receiver类中使用此代码

 Intent broadcastIntent = new Intent();
                broadcastIntent.putExtra("your key", your Value);
                broadcastIntent.setAction("link from  you have recieve a text");
                context.sendBroadcast(broadcastIntent);

之后在您的活动中注册一个广播接收器，如下所示

private void registerSmsReciever() {
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction("link from  you have recieve a text");

  BroadcastReceiver  broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.d("onReceive", "Sms recieved in progress");
          String  message= intent.getStringExtra("key");
            textView.setText(intent.getStringExtra("key"));


        }

    };

    registerReceiver(broadcastReceiver, intentFilter);
}

如何在textview而不是toast中显示收到的短信

2 个答案: