如何让简历的通知，而不是重新创建活动？ [英] How to make notification resume and not recreate activity?

问题描述

我想我有这个想通了，但是在这个问题上的一些调试完毕后：<一href="http://stackoverflow.com/questions/16857326/how-to-make-notification-uncancellable-unremovable">How使通知uncancellable /不可移动我才意识到我的活动仍然得到onCreated（）和onDestroyed（），以随机顺序。

I thought I had this figured out, but after some debugging on this question: How to make notification uncancellable/unremovable I just realized my activity is still getting onCreated() and onDestroyed(), in random order.

我的清单的活动：

<activity
        android:name="***.***.***.*****"
        android:configChanges="orientation|keyboardHidden"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:launchMode="singleTop" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

我也试过launchmodes singleTask，singleInstance。

I've also tried launchmodes singleTask, singleInstance.

我的意图code的通知：

My intent code for the notification:

Intent intent = new Intent(context, MyClass.class);
    intent.setAction(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    //intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    //intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
    //intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    //intent.setFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY);
    //intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);

正如你所看到的，我已经想尽标志​​，好像它可能是相关的，但没有运气...

As you can see, I've tried every flag that seemed like it could be relevant, but no luck...

这给出了一些不必要的文物，如重新启动我的AlarmManager和每一个通知被点击一次烧制alarmmanager开始任务。我想避免这种情况。

This gives some unwanted artifacts, like restarting my AlarmManager and firing the alarmmanager start-task every time the notification is clicked. I'd like to avoid this.

有什么建议？

编辑：我知道有一吨这样的问题，但没有提供的解决方案似乎在这里做的伎俩...：/

I know there are a ton of questions like this, but none of the solutions offered seem to do the trick here... :/

EDIT2：根据要求，这里是我的课：

By request, here's my class:

package ***.***.***;

import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.Bundle;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.PorterDuff;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;


public class MyClass extends FragmentActivity {


private static String userName;
String password;
private static Boolean LoggedIn = false;
private static Boolean RunningState = false;
private static Boolean OnlineState = false;
private static String LastReportTime;

private static Boolean isVisible = true;
private static Boolean firstStart = true;

private static TextView onlineTextView;
private static TextView reportTimeTextView;
private static TextView runningStatusTextView;
private static TextView userLoggedInTextView;

private static Context context;

public static final String PREFS_NAME = "Settings";

public static final String NOTIFICATION_RUNNING_OK = "Reporting Active";
public static final String NOTIFICATION_USER_STOPPED = "Reporting Stopped";
public static final String NOTIFICATION_NO_NETWORK = "No Network Connected";
public static final String NOTIFICATION_NO_CONNECTION = "No Connection To Server";

public static final int NOTIFICATION_ID = 10;

public static final int LOGIN_REQUEST_CODE = 1;
public static final int WAKEUP_LOGIN_REQUEST_CODE = 2;

@Override
protected void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);

    Log.d("MyClass", "Main onCreate() Called");

    loadVariables();

    com.remobjects.sdk.TypeManager.setPackage("com.remobjects.sdk");
    //if (firstStart)
    //{
        Log.d("MyClass", "Main onCreate() firstStart Called");
        if (RunningState && checkConnection())
        {
           // After runLogin(), onResume() gets called here again immediately
            setLoginCode(LOGIN_REQUEST_CODE);
            runLogin();
        }
        else
            init();
    //}
}

@Override
protected void onStart() {
    // TODO Auto-generated method stub
    super.onStart();
}

@Override
public void onResume()
{
    super.onResume();

    Log.d("MyClass", "Main onResume() Called");
    //firstStart gets set to false during login
    if (!firstStart)
    {
        Log.d("MyClass", "Main onResume() !firstStart Called");
        loadVariables();
        setVisible(true);
        updateUI();
    }
}

@Override
protected void onPause()
{
    super.onPause();
    saveVariables();
    setVisible(false);
}

@Override
protected void onStop()
{
    super.onStop();

    saveVariables();
    setVisible(false);
}

@Override
public void onDestroy()
{
    super.onDestroy();
    //cancelNotification();
    Log.e("MyClass", "onDestroy() called");
    saveVariables();
    setVisible(false);
    //setFirstStart(true);
}


private void loadVariables()
{
    SharedPreferences sharedPrefs = getSharedPreferences(PREFS_NAME, 0);

    userName = sharedPrefs.getString("userName", "");
    RunningState = sharedPrefs.getBoolean("RunningState", true);
    LoggedIn = sharedPrefs.getBoolean("LoggedIn", false);
    OnlineState = sharedPrefs.getBoolean("OnlineState", false);
    LastReportTime = sharedPrefs.getString("LastReportTime", "");

    context = this.getApplicationContext();
}

private static void saveVariables()
{
    SharedPreferences settings = context.getSharedPreferences(PREFS_NAME, 0);
    SharedPreferences.Editor editor = settings.edit();

    editor.putString("userName", userName);
    editor.putBoolean("RunningState", RunningState);
    editor.putBoolean("LoggedIn", LoggedIn);
    editor.putBoolean("OnlineState", OnlineState);
    editor.putString("LastReportTime", LastReportTime);

    editor.commit();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_my_class, menu);
    return true;
}

private Boolean checkConnection()
{
    Log.d("MyClass", "checkConnection()");
    ConnectivityManager cnnxManager = (ConnectivityManager) 
            getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo ni = cnnxManager.getActiveNetworkInfo();

    if (ni != null && ni.isAvailable() && ni.isConnected()) 
    {
        OnlineState = true;
        return true;
    }
    OnlineState = false;
    return false;
}

public void runLogin()
{
    Intent intent = new Intent(context, LoginActivity.class);
    startActivityForResult(intent, getLoginCode());
    Log.d("MyClass", "runLogin()");
}

private void init()
{
    Log.d("MyClass", "init()");
    setContentView(R.layout.activity_field_agent);

    onlineTextView = (TextView)findViewById(R.id.onlineStatusTextView);
    reportTimeTextView = (TextView)findViewById(R.id.lastReportTimeTextView);
    runningStatusTextView = (TextView)findViewById(R.id.runningStatusTextView);
    userLoggedInTextView = (TextView)findViewById(R.id.userLoggedInTextView);

    findViewById(R.id.button_online).getBackground().setColorFilter(0xFF00FF00, PorterDuff.Mode.MULTIPLY);
    findViewById(R.id.button_highRisk).getBackground().setColorFilter(0xFFFFA500, PorterDuff.Mode.MULTIPLY);
    findViewById(R.id.button_alarm).getBackground().setColorFilter(0xFFFF0000, PorterDuff.Mode.MULTIPLY);

    setVisible(true);

    updateUI();

    if (RunningState)
    {
        setupAlarmManager(AlarmManager.INTERVAL_FIFTEEN_MINUTES);
        // Here onResume() gets called again
        updateNotificationText(NOTIFICATION_RUNNING_OK);

        Button temp = (Button)findViewById(R.id.button_online);
        temp.setCompoundDrawablesWithIntrinsicBounds(R.drawable.check_box, 0, R.drawable.check_box, 0);
    }
    else
    {
        //cancelAlarmManager();

        updateNotificationText(NOTIFICATION_USER_STOPPED);

        Button temp = (Button)findViewById(R.id.button_offline);
        temp.setCompoundDrawablesWithIntrinsicBounds(R.drawable.check_box, 0, R.drawable.check_box, 0);
    }
}

private void updateUI() 
{
    Log.d("MyClass", "updateUI()");

    updateUserLoggedInStatus(userName);

    updateOnlineStatus(OnlineState);

    updateRunningStatus(RunningState);

    updateReportTimeStatus(LastReportTime);
}

public void offDutyButton_click(View view)
{
    cancelAlarmManager();
    Button temp = (Button)findViewById(R.id.button_offline);
    temp.setCompoundDrawablesWithIntrinsicBounds(R.drawable.check_box, 0, R.drawable.check_box, 0);

    temp = (Button)findViewById(R.id.button_online);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_highRisk);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_alarm);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
}

public void onDutyButton_click(View view)
{
    Button temp = (Button)findViewById(R.id.button_online);
    temp.setCompoundDrawablesWithIntrinsicBounds(R.drawable.check_box, 0, R.drawable.check_box, 0);

    temp = (Button)findViewById(R.id.button_offline);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_highRisk);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_alarm);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
    //cancelAlarmManager();
    setupAlarmManager(AlarmManager.INTERVAL_FIFTEEN_MINUTES);
}

public void highRiskButton_click(View view)
{
    Button temp = (Button)findViewById(R.id.button_highRisk);
    temp.setCompoundDrawablesWithIntrinsicBounds(R.drawable.check_box, 0, R.drawable.check_box, 0);

    temp = (Button)findViewById(R.id.button_online);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_offline);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_alarm);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
}

public void alarmButton_click(View view)
{
    Button temp = (Button)findViewById(R.id.button_alarm);
    temp.setCompoundDrawablesWithIntrinsicBounds(R.drawable.check_box, 0, R.drawable.check_box, 0);

    temp = (Button)findViewById(R.id.button_online);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_highRisk);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

    temp = (Button)findViewById(R.id.button_offline);
    temp.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
}

public static void setButtonIcon(int inId)
{

}

public static void showToast(String inString, Context context)
{
    Toast.makeText(context, inString.toString(), Toast.LENGTH_SHORT).show();
}

public static void updateOnlineStatus(Boolean inStatus)
{
    if (isVisible)
    {
        if (inStatus)
            onlineTextView.setText("Online");
        else
            onlineTextView.setText("Offline");
    }
}

public static void updateReportTimeStatus(String inString)
{
    if (isVisible)
        reportTimeTextView.setText(inString);
}

public static void updateRunningStatus(Boolean inStatus)
{
    if (isVisible)
    {
        if (inStatus)
            runningStatusTextView.setText("Reporting");
        else
            runningStatusTextView.setText("Not Reporting");
    }
}

public static void updateUserLoggedInStatus(String inString)
{
    if (isVisible)
        userLoggedInTextView.setText(inString);
}


//
//
// Getters and Setters
//
//
public static void setLoggedIn(Boolean inBool)
{
    LoggedIn = inBool;
}

public static Boolean getLoggedIn()
{
    return LoggedIn;
}

public static void setRunningState(Boolean inBool)
{
    RunningState = inBool;
}

public static Boolean getRunningState()
{
    return RunningState;
}

public static void setVisible(Boolean inBool)
{
    isVisible = inBool;
}

public static Boolean getVisible()
{
    return isVisible;
}

public static void setUsername(String inString)
{
    userName = inString;
}

public static String getUsername()
{
    return userName;
}

public static void setLastReportTime(String inString)
{
    LastReportTime = inString;
}

public static String getLastReportTime()
{
    return LastReportTime;
}

public static Context getAppContext()
{
    return MyClass.context;
}

public static void setLoginCode(int code)
{
    SharedPreferences settings = context.getSharedPreferences(PREFS_NAME, 0);
    SharedPreferences.Editor editor = settings.edit();

    editor.putInt("LoginCode", code);

    editor.commit();
}

public static int getLoginCode()
{
    SharedPreferences sharedPrefs = context.getSharedPreferences(PREFS_NAME, 0);

    return sharedPrefs.getInt("LoginCode", 1);
}

public static void setFirstStart(Boolean inBool)
{
    firstStart = inBool;
}

public static Boolean getFirstStart()
{
    return firstStart;
}

//
//
//
//
//
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);
  switch(requestCode) {
    case (LOGIN_REQUEST_CODE) : {
      if (resultCode == Activity.RESULT_OK) {
        LoggedIn = data.getBooleanExtra("LoggedIn", false);
        userName = data.getStringExtra("Username");

        init();
      }
      break;
    }
    case (WAKEUP_LOGIN_REQUEST_CODE) : {
        if (resultCode == Activity.RESULT_OK) {
          LoggedIn = data.getBooleanExtra("LoggedIn", false);
          userName = data.getStringExtra("Username");

          cancelAlarmManager();
          setupAlarmManager(AlarmManager.INTERVAL_FIFTEEN_MINUTES);
        }
        break;
    }
  }
}

//
//
// AlarmManager
//
//

public static void setupAlarmManager(long interval)
{
    AlarmManager alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
    Intent alarmIntent = new Intent(context, LaunchReceiver.class); 
    PendingIntent pendingAlarmIntent = PendingIntent.getBroadcast(context.getApplicationContext(), 0, alarmIntent, 0);
    alarmMgr.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, 0, interval,  pendingAlarmIntent);

    RunningState = true;
    updateRunningStatus(RunningState);

    updateNotificationText(NOTIFICATION_RUNNING_OK);

    Log.d("MyClass", "AlarmManager Started");
}


public static void cancelAlarmManager()
{
    Intent intent = new Intent(context.getApplicationContext(), LaunchReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
    AlarmManager alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
    alarmMgr.cancel(pendingIntent);

    RunningState = false;
    updateRunningStatus(RunningState);

    updateNotificationText(NOTIFICATION_USER_STOPPED);

    Log.d("MyClass", "AlarmManager Stopped");

    Intent serviceIntent = new Intent(context, MonitorService.class);
    context.stopService(serviceIntent);
    Log.d("MyClass", "Stopping MonitorService");
}



//
//
// Notification
//
//

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static void createNotification()
{
    NotificationManager notificationManager = (NotificationManager)context.getSystemService(NOTIFICATION_SERVICE);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
                            .setContentTitle("blablabla")
                            .setContentText("Getting Status")
                            .setSmallIcon(R.drawable.ic_launcher)
                            .setOngoing(true)
                            .setAutoCancel(false);

    Intent intent = new Intent(context, MyClass.class);
    intent.setAction(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    //intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    //intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
    //intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    //intent.setFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY);
    //intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    stackBuilder.addParentStack(MyClass.class);
    stackBuilder.addNextIntent(intent);

    PendingIntent pendingIntent = stackBuilder.getPendingIntent(0,  PendingIntent.FLAG_UPDATE_CURRENT);

    builder.setContentIntent(pendingIntent);

    /*Notification noti = builder.build();
    noti.flags = Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT;*/

    notificationManager.notify(NOTIFICATION_ID, builder.build());
}

public static void updateNotificationText(String inString)
{
    NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
                                            .setContentText(inString)
                                            .setContentTitle("blablabla")
                                            .setSmallIcon(R.drawable.ic_launcher)
                                            .setOngoing(true)
                                            .setAutoCancel(false);

    Intent intent = new Intent(context, MyClass.class);
    intent.setAction(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    //intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    stackBuilder.addParentStack(MyClass.class);
    stackBuilder.addNextIntent(intent);

    PendingIntent pendingIntent = stackBuilder.getPendingIntent(0,  PendingIntent.FLAG_UPDATE_CURRENT);

    builder.setContentIntent(pendingIntent);

    /*Notification noti = builder.build();
    noti.flags = Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT;*/

    notificationManager.notify(NOTIFICATION_ID, builder.build());
}

public static void cancelNotification()
{
    NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

    notificationManager.cancel(NOTIFICATION_ID);
}
}

正如在评论中，开始loginActivity后，onResume（）在这里被立即重新调用。开始alarmManager后一样的。

As mentioned in the comments, after starting the loginActivity, onResume() here gets called again immediately. Same after starting the alarmManager.

此外，每次alarmManager蜱时，它似乎把应用推到前台。什么方法可以避免呢？

Also, every time the alarmManager ticks, it seems to bring the app to the foreground. Any way to avoid that?

推荐答案

貌似问题是由在通知 - code（从Android的引导直采取通知这些线路造成的：

Looks like the problem was caused by these lines in the notification-code (taken straight from Android's guide on notifications:

TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    stackBuilder.addParentStack(FieldAgent.class);
    stackBuilder.addNextIntent(intent);

    PendingIntent pendingIntent = stackBuilder.getPendingIntent(0,  PendingIntent.FLAG_UPDATE_CURRENT);

替换它们与常规pendingintent这样解决的：

Replacing them with a regular pendingintent like this solved it:

PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

这是完整的例子

Intent intent = new Intent(getApplicationContext(), myactivity.class);
PendingIntent pIntent = PendingIntent.getActivity(getApplicationContext(), (int)System.currentTimeMillis(), intent, 0);

Notification myNotification  = new Notification.Builder(getApplicationContext())
                        .setContentTitle("Title")
                        .setContentText("Some text....")
                        .setSmallIcon(R.drawable.myicon)
                        .setContentIntent(pIntent)
                        .setAutoCancel(true).build();


NotificationManager notificationManager =
                        (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

notificationManager.notify(0, myNotification);

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