Question

我在通知管理器中意图调用一个变量，因为第一次意图成功运行但第二次当我意图新消息时，活动显示thr perivous值plz帮助我实际上是一个大问题

这是通知管理员的代码

public class GCMIntentService extends GCMBaseIntentService {

    private static final String TAG = "GCMIntentService";

    public GCMIntentService() {
        super(SENDER_ID);
    }

    @Override
    protected void onRegistered(Context context, String registrationId) {

        Log.i(TAG, "Device registered: regId = " + registrationId);

        displayMessage(context, "Your device registred with GCM");

        Log.d("NAME", MainActivity.name);

        ServerUtilities.register(context, MainActivity.name, MainActivity.email, registrationId);
    }

    @Override
    protected void onUnregistered(Context context, String registrationId) {

        Log.i(TAG, "Device unregistered");

        displayMessage(context, getString(R.string.gcm_unregistered));

        ServerUtilities.unregister(context, registrationId);
    }

    @Override
    protected void onMessage(Context context, Intent intent) {

        Log.i(TAG, "Received message");

        String message = intent.getExtras().getString("price");

        displayMessage(context, message);

        // notifies user

        generateNotification(context, message);

    }

    @Override
    protected void onDeletedMessages(Context context, int total) {

        Log.i(TAG, "Received deleted messages notification");

        String message = getString(R.string.gcm_deleted, total);

        displayMessage(context, message);

        // notifies user

        generateNotification(context, message);

    }


    @Override
    public void onError(Context context, String errorId) {

        Log.i(TAG, "Received error: " + errorId);

        displayMessage(context, getString(R.string.gcm_error, errorId));

    }

    @Override
    protected boolean onRecoverableError(Context context, String errorId) {

        // log message

        Log.i(TAG, "Received recoverable error: " + errorId);

        displayMessage(context, getString(R.string.gcm_recoverable_error,
                errorId));

        return super.onRecoverableError(context, errorId);
    }


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

        int icon = R.drawable.orange_logo;

        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,receivemessage.class);

        // set intent so it does not start a new activity

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

        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | 
                Intent.FLAG_ACTIVITY_SINGLE_TOP);

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

        notification.setLatestEventInfo(context, title, message, contentIntent);

        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);     
    }
}

在receivemessage class

public class receivemessage extends Activity{

    TextView textshow;
    String saveit;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.message);

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

        Intent i=getIntent();
        saveit = i.getStringExtra("run");
        textshow.setText(saveit.toString());
    }
}

提前致谢

Answer 1

替换此行

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

与

PendingIntent contentIntent = contentIntent = PendingIntent.getActivity(context,
                    (int) (Math.random() * 100), notificationIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT);

Answer 2

在第1部分中，您要添加此值：

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

虽然在receivemessage类中（顺便说一下，错误的命名，类名应该是camel case）你有：

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

也许你应该在那里：

saveit = i.getStringExtra("activate");

我们的想法是，根据您发布的内容，不清楚是否有任何组件实际提供此run意图字符串。

编辑使用您的代码，以便从活动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);
    }

}

和MySoActivity类中的结果：

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);
    }

}

通知正常，当点击通知我得到预期值。代码中唯一的区别是我使用的是getApplicationContext()而不是您上面提到的上下文，但我不确定它的相关性。也许你可以比较差异，看看你做错了什么......

Answer 3

在您的generatenotification（）方法中使用以下代码：

    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);


    }

Jus见： notificationManager.notify（（int）when，notification）;

不要使用0。

希望这有帮助。

Answer 4

这段代码对我有用，试试这个。

替换此代码：

在GCMIntentService.java中替换此＆＃34; generateNotification＆＃34;方法

<强> GCMIntentService.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);


}

<强> Receivemessage.java

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);
}

如何将变量从notificationmanager传递给android中的一个活动

4 个答案: