短信弹出：AlertDialog不显示，我得到一个短信 [英] SMS Popup: AlertDialog does not show as I get a SMS message

问题描述

我看到了很多的做短信弹出应用程序。为什么我不能让我的应用程序工作吗？如果一个短信进来，我想它在屏幕上弹出。

下面是我的code：

 公共类NotifySMSReceived扩展活动
{    私有静态最后弦乐LOG_TAG =SMSReceiver;    公共静态最终诠释NOTIFICATION_ID_RECEIVED = 0x1221;    静态最后弦乐ACTION =android.provider.Telephony.SMS_RECEIVED;
    保护无效的onCreate（捆绑savedInstanceState）{        super.onCreate（savedInstanceState）;        IntentFilter的过滤器=新的IntentFilter（ACTION）;        this.registerReceiver（mReceivedSMSReceiver，过滤器）;    }
    私人无效displayAlert（）    {        AlertDialog.Builder建设者=新AlertDialog.Builder（本）;        builder.setMessage（你确定要退出？）。setCancelable（                假）.setPositiveButton（是，
                新DialogInterface.OnClickListener（）{                    公共无效的onClick（DialogInterface对话，诠释的id）{
                        dialog.cancel（）;
                    }
                }）。setNegativeButton（否，
                新DialogInterface.OnClickListener（）{
                    公共无效的onClick（DialogInterface对话，诠释的id）{
                        dialog.cancel（）;
                    }
                }）;
        AlertDialog警报= builder.create（）;
        alert.show（）;
    }    私人最终的BroadcastReceiver mReceivedSMSReceiver =新的广播接收器（）{
        @覆盖
        公共无效的onReceive（上下文的背景下，意图意图）{
            字符串行动= intent.getAction（）;            如果（ACTION.equals（动作））
            {
                //你的短信处理code
                displayAlert（）;
            }
        }
    };
}
 

解决方案

我觉得这里的问题是与上下文对象。从

  

的onReceive（上下文的背景，意图意图）

您应该通过的背景在onRecive收到喜欢..

  

私人无效displayAlert（背景下的背景）

和然后，
变化，

  

AlertDialog.Builder建设者=新AlertDialog.Builder（本）;

到

  

AlertDialog.Builder建设者=新AlertDialog.Builder（背景）;

现在应该work.hope这会有所帮助。

干杯。

I see a lot of applications that do SMS popups. Why can't I get my app working? If a SMS message comes in, I would like it to popup on the screen.

Here's my code:

public class NotifySMSReceived extends Activity 
{

    private static final String LOG_TAG = "SMSReceiver";

    public static final int NOTIFICATION_ID_RECEIVED = 0x1221;

    static final String ACTION = "android.provider.Telephony.SMS_RECEIVED";


    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);



        IntentFilter filter = new IntentFilter(ACTION);

        this.registerReceiver(mReceivedSMSReceiver, filter);

    }


    private void displayAlert()

    {

        AlertDialog.Builder builder = new AlertDialog.Builder(this);

        builder.setMessage("Are you sure you want to exit?").setCancelable(

                false).setPositiveButton("Yes",
                new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                }).setNegativeButton("No",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
        AlertDialog alert = builder.create();
        alert.show();
    }

    private final BroadcastReceiver mReceivedSMSReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();

            if (ACTION.equals(action)) 
            {
                //your SMS processing code
                displayAlert();
            }
        }
    };    
}

解决方案

I think problem here is with context object. From,

onReceive(Context context, Intent intent)

You should pass context received in onRecive to like..

private void displayAlert(Context context)

and then, change ,

AlertDialog.Builder builder = new AlertDialog.Builder(this);

TO

AlertDialog.Builder builder = new AlertDialog.Builder(context);

now it should work.hope this helps.

Cheers.

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