OneSignal Android NotificationOpenedHandler - 启动活动

Question

尝试从Parse迁移到OneSignal,我被困在如何在用户点击推送通知后启动新的Activity.我的处理程序正在运行,日志显示文本,问题似乎是如何从我的推送打开处理程序中获取对应用程序上下文的访问权限.示例代码含糊不清,getApplicationContext()如果没有先做其他事情就行不通.

我发现的一篇与OneSignal无关的帖子建议扩展Application类以获取对应用程序上下文的访问权限.这没有产生任何语法错误,但我的应用程序崩溃.

码:

package com.linkedresponder.onesignal;

import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

import com.onesignal.OSNotificationAction;
import com.onesignal.OSNotificationOpenResult;
import com.onesignal.OneSignal;

import org.json.JSONObject;

class NotificationOpenHandler extends Application implements OneSignal.NotificationOpenedHandler {
    // This fires when a notification is opened by tapping on it.
    private Context mContext;
    @Override
    public void onCreate() {
        this.mContext = getApplicationContext();
    }
    @Override
    public void notificationOpened(OSNotificationOpenResult result) {
        OSNotificationAction.ActionType actionType = result.action.type;
        JSONObject data = result.notification.payload.additionalData;
        String customKey;

        if (data != null) {
            customKey = data.optString("customkey", null);
            if (customKey != null) {
                Log.i("OneSignalExample", "customkey set with value: " + customKey);
            } else {
                Log.i("OneSignalExample", "No data");
            }
        }

        if (actionType == OSNotificationAction.ActionType.ActionTaken)
            Log.i("OneSignalExample", "Button pressed with id: " + result.action.actionID);

        Intent intent = new Intent(mContext, PushClicked.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_NEW_TASK);
         startActivity(intent);
    }
}

错误:

er.onesignal E/AndroidRuntime: FATAL EXCEPTION: main Process: com.linkedresponder.onesignal, PID: 5680
   java.lang.RuntimeException: Unable to start receiver com.onesignal.NotificationOpenedReceiver: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
   at android.app.ActivityThread.handleReceiver(ActivityThread.java:3018)
   at android.app.ActivityThread.-wrap18(ActivityThread.java)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1544)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6077)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
   Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
   at android.content.ComponentName.<init>(ComponentName.java:128)
   at android.content.Intent.<init>(Intent.java:4868)
   at com.linkedresponder.onesignal.NotificationOpenHandler.notificationOpened(NotificationOpenHandler.java:41)
   at com.onesignal.OneSignal.fireNotificationOpenedHandler(OneSignal.java:1009)
   at com.onesignal.OneSignal.runNotificationOpenedCallback(OneSignal.java:954)
   at com.onesignal.OneSignal.handleNotificationOpen(OneSignal.java:1041)
   at com.onesignal.NotificationOpenedProcessor.processIntent(NotificationOpenedProcessor.java:101)
   at com.onesignal.NotificationOpenedProcessor.processFromActivity(NotificationOpenedProcessor.java:57)
   at com.onesignal.NotificationOpenedReceiver.onReceive(NotificationOpenedReceiver.java:11)
   at android.app.ActivityThread.handleReceiver(ActivityThread.java:3011)
   at android.app.ActivityThread.-wrap18(ActivityThread.java) 
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1544) 
   at android.os.Handler.dispatchMessage(Handler.java:102) 
   at android.os.Looper.loop(Looper.java:154) 
   at android.app.ActivityThread.main(ActivityThread.java:6077) 
   at java.lang.reflect.Method.invoke(Native Method) 
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 

Answer 1

这是我如何使它工作:

public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        OneSignal.startInit(this)
                .setNotificationOpenedHandler(new MyNotificationOpenedHandler(this))
                .init();
    }
}

在NotificationOpenedHandler自定义类

public class MyNotificationOpenedHandler implements OneSignal.NotificationOpenedHandler {

    private Application application;

    public MyNotificationOpenedHandler(Application application) {
        this.application = application;
    }

    @Override
    public void notificationOpened(OSNotificationOpenResult result) {

        // Get custom datas from notification
        JSONObject data = result.notification.payload.additionalData;
        if (data != null) {
            String myCustomData = data.optString("key", null);
        }

        // React to button pressed
        OSNotificationAction.ActionType actionType = result.action.type;
        if (actionType == OSNotificationAction.ActionType.ActionTaken)
            Log.i("OneSignalExample", "Button pressed with id: " + result.action.actionID);

        // Launch new activity using Application object
        startApp();
    }

    private void startApp() {
        Intent intent = new Intent(application, MyActivity.class)
                .setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_NEW_TASK);
        application.startActivity(intent);
    }
}

不要忘记将其添加到清单中:

<application ...>
   <meta-data android:name="com.onesignal.NotificationOpened.DEFAULT" android:value="DISABLE" />
</application>

Answer 2

此问题的简短答案是在初始化 OneSignal 的同一类中包含打开的推送通知的处理程序：

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Init OneSignal
        OneSignal.startInit(this).setNotificationOpenedHandler(new NotificationOpenHandler()).init();

        Toolbar mToolbar = (Toolbar) findViewById(R.id.app_bar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayUseLogoEnabled(true);
        getSupportActionBar().setLogo(R.drawable.ic_launcher);
        getSupportActionBar().setDisplayShowTitleEnabled(false);
        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                    .add(R.id.container, new RecordingsFragment())
                    .commit();
        }
    }

    class NotificationOpenHandler implements OneSignal.NotificationOpenedHandler {
        // This fires when a notification is opened by tapping on it.
        @Override
        public void notificationOpened(OSNotificationOpenResult result) {
            OSNotificationAction.ActionType actionType = result.action.type;
            JSONObject data = result.notification.payload.additionalData;

            String stationName = data.optString("stationName");
            String timestamp = data.optString("timestamp");
            String filename = data.optString("filename");
            String url = getString(R.string.callResourceUrl) + filename;

            Intent intent = new Intent(getApplicationContext(), CallActivity.class);
            intent.putExtra("stationName", stationName);
            intent.putExtra("time", timestamp);
            intent.putExtra("url", url);
//            intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(intent);
        }
    }
}