如何将变量从notificationmanager传递到android中的活动

我打算在notification manager中设置一个变量，这是我第一次尝试成功，但第二次尝试新消息时，活动显示了thr perivous value plz help me我确实遇到了一个大问题

这是通知管理器的代码

在receivemessage类中

提前感谢

在第#1节中，您正在添加此值：

notificationIntent.putExtra("activate",message.toString());

在receivemessage类中（顺便说一句，命名错误，类名应该是驼峰大小写），您有：

Intent i=getIntent();
saveit = i.getStringExtra("run");

也许你应该在那里：

saveit = i.getStringExtra("activate");

这个想法是，从您发布的内容来看，不清楚是否有任何组件实际提供了这个

run

intent字符串

使用您的代码编辑，以便从活动中触发上述通知管理器：

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.btn_some_action).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                setupClick();
            }
        });
    }

    private void setupClick() {
        String message = "Sample notification";
        int icon = R.drawable.ic_launcher;
        long when = System.currentTimeMillis();
        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notification = new Notification(icon, message, when);

        String title = getString(R.string.app_name);

        Intent notificationIntent = new Intent(this, MySoActivity.class);
        // set intent so it does not start a new activity
        notificationIntent.putExtra("run", message.toString());
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent intent = PendingIntent.getActivity(this.getApplicationContext(), 0,
                notificationIntent, 0);
        notification.setLatestEventInfo(this.getApplicationContext(), title, message, intent);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        // Play default notification sound
        notification.defaults |= Notification.DEFAULT_SOUND;
        // Vibrate if vibrate is enabled
        notification.defaults |= Notification.DEFAULT_VIBRATE;
        notificationManager.notify(0, notification);
    }

}

结果是一个

MySoActivity

类：

public class MySoActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.my_so_layout);
        TextView lblIntentExtra = (TextView) findViewById(R.id.lblIntentExtra);
        Intent intent = getIntent();
        String value = intent.getStringExtra("run");
        if (TextUtils.isEmpty(value)) {
            value = "NONE@!";
        }
        lblIntentExtra.setText(value);
    }

}

通知是正确的，当点击通知时，我得到了预期的值。代码中唯一的区别是我使用的是

getApplicationContext（）

，而不是上面的上下文，但我不确定这有多重要。也许您可以比较这些差异，看看哪里做错了…

在第1节中，您添加了以下值：

notificationIntent.putExtra("activate",message.toString());

在receivemessage类中（顺便说一句，命名错误，类名应该是驼峰大小写），您有：

Intent i=getIntent();
saveit = i.getStringExtra("run");

也许你应该在那里：

saveit = i.getStringExtra("activate");

这个想法是，从您发布的内容来看，不清楚是否有任何组件实际提供了这个

run

intent字符串

使用您的代码编辑，以便从活动中触发上述通知管理器：

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.btn_some_action).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                setupClick();
            }
        });
    }

    private void setupClick() {
        String message = "Sample notification";
        int icon = R.drawable.ic_launcher;
        long when = System.currentTimeMillis();
        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        Notification notification = new Notification(icon, message, when);

        String title = getString(R.string.app_name);

        Intent notificationIntent = new Intent(this, MySoActivity.class);
        // set intent so it does not start a new activity
        notificationIntent.putExtra("run", message.toString());
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent intent = PendingIntent.getActivity(this.getApplicationContext(), 0,
                notificationIntent, 0);
        notification.setLatestEventInfo(this.getApplicationContext(), title, message, intent);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        // Play default notification sound
        notification.defaults |= Notification.DEFAULT_SOUND;
        // Vibrate if vibrate is enabled
        notification.defaults |= Notification.DEFAULT_VIBRATE;
        notificationManager.notify(0, notification);
    }

}

结果是一个

MySoActivity

类：

public class MySoActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.my_so_layout);
        TextView lblIntentExtra = (TextView) findViewById(R.id.lblIntentExtra);
        Intent intent = getIntent();
        String value = intent.getStringExtra("run");
        if (TextUtils.isEmpty(value)) {
            value = "NONE@!";
        }
        lblIntentExtra.setText(value);
    }

}

通知是正确的，当点击通知时，我得到了预期的值。代码中唯一的区别是我使用的是

getApplicationContext（）

，而不是上面的上下文，但我不确定这有多重要。也许你可以比较一下差异，看看哪里做错了…

替换这一行

PendingIntent intent =
        PendingIntent.getActivity(context, 0, notificationIntent,0);

与

更换这条线

PendingIntent intent =
        PendingIntent.getActivity(context, 0, notificationIntent,0);

与

---

在generatenotification（）方法中，请使用以下代码：

    private void generateNotification(Context context, String message, String query) {

    int icon = R.drawable.icon;
        long when = System.currentTimeMillis();
    String appname = context.getResources().getString(R.string.app_name);
    NotificationManager notificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);

    Notification notification;

    Intent intent = new Intent(context, myActivity.class);


    PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
            intent, 0);

            NotificationCompat.Builder builder = new NotificationCompat.Builder(
                    context);
            notification = builder.setContentIntent(contentIntent)
                    .setSmallIcon(icon).setTicker(appname).setWhen(when)
                    .setAutoCancel(true).setContentTitle(appname)
                    .setContentText(message).build();

            notificationManager.notify((int) when, notification);


    }

请参阅：notificationManager.notify（（int）when，notification）

不要使用0

---

希望这有帮助。

在generatenotification（）方法中，请使用以下代码：

    private void generateNotification(Context context, String message, String query) {

    int icon = R.drawable.icon;
        long when = System.currentTimeMillis();
    String appname = context.getResources().getString(R.string.app_name);
    NotificationManager notificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);

    Notification notification;

    Intent intent = new Intent(context, myActivity.class);


    PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
            intent, 0);

            NotificationCompat.Builder builder = new NotificationCompat.Builder(
                    context);
            notification = builder.setContentIntent(contentIntent)
                    .setSmallIcon(icon).setTicker(appname).setWhen(when)
                    .setAutoCancel(true).setContentTitle(appname)
                    .setContentText(message).build();

            notificationManager.notify((int) when, notification);


    }

请参阅：notificationManager.notify（（int）when，notification）

不要使用0

希望这有帮助。

这段代码对我有用， 试试这个

替换此代码：

在gcminentservice.java中，替换此“generateNotification”方法

gcminentservice.java

private static void generateNotification(Context context, String message) {

    int icon = R.drawable.ic_launcher;
    long when = System.currentTimeMillis();
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(icon, message, when);

    String title = context.getString(R.string.app_name);        

    Intent notificationIntent = new Intent(context, NotificationReceiver.class);

    notificationIntent.putExtra("Notice", message);
    notificationIntent.setAction(Intent.ACTION_VIEW);
    notificationIntent.setAction("myString"+when);
    notificationIntent.setData((Uri.parse("mystring"+when)));

    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent intent = PendingIntent.getActivity(context, (int) when, notificationIntent, 0);        

    notification.setLatestEventInfo(context, title, message, intent);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    // Play default notification sound
    notification.defaults |= Notification.DEFAULT_SOUND;

    // Vibrate if vibrate is enabled
    notification.defaults |= Notification.DEFAULT_VIBRATE;
    notificationManager.notify((int) when, notification);


}

TextView textshow;

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.message);

    textshow=(TextView)findViewById(R.id.showmessage);   

    Intent in = getIntent();         
    String text = in.getStringExtra("Notice");
    textshow.setText(text);
}

Receivemessage.java

private static void generateNotification(Context context, String message) {

    int icon = R.drawable.ic_launcher;
    long when = System.currentTimeMillis();
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(icon, message, when);

    String title = context.getString(R.string.app_name);        

    Intent notificationIntent = new Intent(context, NotificationReceiver.class);

    notificationIntent.putExtra("Notice", message);
    notificationIntent.setAction(Intent.ACTION_VIEW);
    notificationIntent.setAction("myString"+when);
    notificationIntent.setData((Uri.parse("mystring"+when)));

    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent intent = PendingIntent.getActivity(context, (int) when, notificationIntent, 0);        

    notification.setLatestEventInfo(context, title, message, intent);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    // Play default notification sound
    notification.defaults |= Notification.DEFAULT_SOUND;

    // Vibrate if vibrate is enabled
    notification.defaults |= Notification.DEFAULT_VIBRATE;
    notificationManager.notify((int) when, notification);


}

TextView textshow;

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.message);

    textshow=(TextView)findViewById(R.id.showmessage);   

    Intent in = getIntent();         
    String text = in.getStringExtra("Notice");
    textshow.setText(text);
}

这个代码对我有用， 试试这个

替换此代码：

在gcminentservice.java中，替换此“generateNotification”方法

gcminentservice.java

private static void generateNotification(Context context, String message) {

    int icon = R.drawable.ic_launcher;
    long when = System.currentTimeMillis();
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(icon, message, when);

    String title = context.getString(R.string.app_name);        

    Intent notificationIntent = new Intent(context, NotificationReceiver.class);

    notificationIntent.putExtra("Notice", message);
    notificationIntent.setAction(Intent.ACTION_VIEW);
    notificationIntent.setAction("myString"+when);
    notificationIntent.setData((Uri.parse("mystring"+when)));

    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent intent = PendingIntent.getActivity(context, (int) when, notificationIntent, 0);        

    notification.setLatestEventInfo(context, title, message, intent);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    // Play default notification sound
    notification.defaults |= Notification.DEFAULT_SOUND;

    // Vibrate if vibrate is enabled
    notification.defaults |= Notification.DEFAULT_VIBRATE;
    notificationManager.notify((int) when, notification);


}

TextView textshow;

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.message);

    textshow=(TextView)findViewById(R.id.showmessage);   

    Intent in = getIntent();         
    String text = in.getStringExtra("Notice");
    textshow.setText(text);
}

Receivemessage.java

private static void generateNotification(Context context, String message) {

    int icon = R.drawable.ic_launcher;
    long when = System.currentTimeMillis();
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(icon, message, when);

    String title = context.getString(R.string.app_name);        

    Intent notificationIntent = new Intent(context, NotificationReceiver.class);

    notificationIntent.putExtra("Notice", message);
    notificationIntent.setAction(Intent.ACTION_VIEW);
    notificationIntent.setAction("myString"+when);
    notificationIntent.setData((Uri.parse("mystring"+when)));

    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

    PendingIntent intent = PendingIntent.getActivity(context, (int) when, notificationIntent, 0);        

    notification.setLatestEventInfo(context, title, message, intent);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    // Play default notification sound
    notification.defaults |= Notification.DEFAULT_SOUND;

    // Vibrate if vibrate is enabled
    notification.defaults |= Notification.DEFAULT_VIBRATE;
    notificationManager.notify((int) when, notification);


}

TextView textshow;

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.message);

    textshow=(TextView)findViewById(R.id.showmessage);   

    Intent in = getIntent();         
    String text = in.getStringExtra("Notice");
    textshow.setText(text);
}

---

我的缺点是，我已经纠正了这个问题，但它仍然给了我相同的响应。我的老兄，它不起作用，因为它是一个GCMBaseIntentService，它不允许我使用getapplicationcontext，它从

服务扩展到
IntentService
，您可以访问
getapplicationcontext（）
my bad我已经纠正了这个问题，但它仍然给了我相同的响应。我的兄弟，它不起作用，因为它是一个GCMBaseContentService，它不能让我使用getapplicationcontext，它从
服务
扩展到
意向服务
，你可以访问
getapplicationcontext（）
（int）（Math.random（））*100）是关键。为我工作！（int）（Math.random（）*100）是关键。为我工作！