0

Hello guys
am totally new to java development but I red some tutorial on web on how to create different application on Android Studio.
I've created simple webview application with navigation drawer and everything work perfect, when I tried to add Parse.com SDK to use notification service my program crashes whenever I send a push notification.
jaaja.jpg
if I opened the application and send push it will Recieve it no crash in app, the problem occurs only when application is closed.
My Android Manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.iqpslb.osamasw">
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

    <permission android:protectionLevel="signature"
        android:name="com.iqpslb.osamasw.permission.C2D_MESSAGE" />
    <uses-permission android:name="com.iqpslb.osamasw.permission.C2D_MESSAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".SplashScreen"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".add"
            android:label="@string/title_activity_add"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".Our_Partner"
            android:label="@string/title_activity_our__partner"
            android:parentActivityName=".MainActivity"
            android:theme="@style/AppTheme.NoActionBar">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.iqpslb.osamasw.MainActivity" />
        </activity>
        <activity
            android:name=".About_Leaderboard"
            android:label="@string/title_activity_about__leaderboard"
            android:parentActivityName=".MainActivity"
            android:theme="@style/AppTheme.NoActionBar">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.iqpslb.osamasw.MainActivity" />
        </activity>

        <service android:name="com.parse.PushService" />
        <receiver
            android:name="com.iqpslb.osamasw.Receiver"
            android:exported="false" >
            <intent-filter>
                <action android:name="com.parse.push.intent.RECEIVE" />
                <action android:name="com.parse.push.intent.DELETE" />
                <action android:name="com.parse.push.intent.OPEN" />
            </intent-filter>
        </receiver>
        <receiver android:name="com.parse.GcmBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND">
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

                <category android:name="com.iqpslb.osamasw" />
            </intent-filter>
        </receiver>
        <meta-data android:name="com.parse.push.notification_icon"
            android:resource="@drawable/ic_stat_name"/>
    </application>

</manifest>

Reciever.java

package com.iqpslb.osamasw;

import android.content.Context;
import android.content.Intent;

import com.parse.ParsePushBroadcastReceiver;

public class Receiver extends ParsePushBroadcastReceiver {

    @Override
    public void onPushOpen(Context context, Intent intent) {
        //Log.e("Push", "Clicked");
        Intent i = new Intent(context, MainActivity.class);
        i.putExtras(intent.getExtras());
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
    }
}

Main Activity.java

package com.iqpslb.osamasw;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.parse.Parse;
import com.parse.ParseInstallation;


public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {
    private WebView mWebView;
    ProgressBar progressBar;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Parse.initialize(getApplicationContext(), getString(R.string.parse_app_id), getString(R.string.parse_client_key));
        ParseInstallation.getCurrentInstallation().saveInBackground();
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ConnectivityManager cManager = (ConnectivityManager) getSystemService(this.CONNECTIVITY_SERVICE);
        NetworkInfo nInfo = cManager.getActiveNetworkInfo();
        if (nInfo != null && nInfo.isConnected()){
            Toast.makeText(getApplicationContext(), "Welcome", Toast.LENGTH_LONG).show();
            mWebView = (WebView) findViewById(R.id.activity_main_webview);
            progressBar = (ProgressBar) findViewById(R.id.progressBar1);
            WebSettings webSettings = mWebView.getSettings();
            webSettings.setJavaScriptEnabled(true);
            mWebView.loadUrl("http://hawkiq.byethost9.com/m.html");
            mWebView.setWebViewClient(new HelloWebViewClient());
        }else{
            Toast.makeText(getApplicationContext(),"No Internet Connection", Toast.LENGTH_LONG).show();
        }



        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }
    private class HelloWebViewClient extends WebViewClient {


        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            // TODO Auto-generated method stub
            super.onPageStarted(view, url, favicon);
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView webView, String url)
        {
            webView.loadUrl(url);
            return true;
        }

        @Override
        public void onPageFinished(WebView view, String url) {

            super.onPageFinished(view, url);

            progressBar.setVisibility(view.GONE);
        }

    }


    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event)
    { //if back key is pressed
        if((keyCode == KeyEvent.KEYCODE_BACK)&& mWebView.canGoBack())
        {
            mWebView.goBack();
            return true;

        }

        return super.onKeyDown(keyCode, event);

    }

    @Override
    public void onBackPressed() {

        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                MainActivity.this);

        // set title
        alertDialogBuilder.setTitle("Exit");

        // set dialog message
        alertDialogBuilder
                .setMessage("Do you really want to exit?")
                .setCancelable(false)
                .setPositiveButton("Yes",new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog,int id) {
                        // if this button is clicked, close
                        // current activity
                        MainActivity.this.finish();
                    }
                })
                .setNegativeButton("No",new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog,int id) {
                        // if this button is clicked, just close
                        // the dialog box and do nothing
                        dialog.cancel();
                    }
                });

        // create alert dialog
        AlertDialog alertDialog = alertDialogBuilder.create();

        // show it
        alertDialog.show();
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_exit) {
            AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                    MainActivity.this);

            // set title
            alertDialogBuilder.setTitle("Exit");

            // set dialog message
            alertDialogBuilder
                    .setMessage("Do you really want to exit?")
                    .setCancelable(false)
                    .setPositiveButton("Yes",new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,int id) {
                            // if this button is clicked, close
                            // current activity
                            MainActivity.this.finish();
                        }
                    })
                    .setNegativeButton("No",new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,int id) {
                            // if this button is clicked, just close
                            // the dialog box and do nothing
                            dialog.cancel();
                        }
                    });

            // create alert dialog
            AlertDialog alertDialog = alertDialogBuilder.create();

            // show it
            alertDialog.show();
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_home) {
            Intent intent = new Intent(this,MainActivity.class);
            startActivity(intent);
        } else if (id == R.id.nav_add) {
            Intent intent = new Intent(this,add.class);
            startActivity(intent);
        } else if (id == R.id.nav_partner) {
            Intent intent = new Intent(this,Our_Partner.class);
            startActivity(intent);

        } else if (id == R.id.nav_about) {
            Intent intent = new Intent(this,About_Leaderboard.class);
            startActivity(intent);
        } else if (id == R.id.nav_exit) {
        finish();
        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.iqpslb.osamasw"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.2"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.parse.bolts:bolts-android:1.3.0'
    compile 'com.parse:parse-android:1.12.0'
}
3
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Discussion Span
Last Post by OsaMasw
-2

if you are totally new to Java, maybe you should start with getting acquainted with the language.
It's a bit like learning to swim: if you don't know how, jumping in the deep end when noone else is around, might get you in trouble you can't get out of.

1

When it crashed, did you get a traceback of the crash? Java (and Dalvik) will provide a nice stack trace to show you where the problem actually occurred. Since you say it only happens when closing the application, then I suspect you have munged something in your code that on exit the system cleanup code can't deal with it. I'm not going to analyze your 350+ lines of provided code to tell you why...

0

this what I got from sending push notification while app is closed.

01-23 10:24:04.406 27976-27976/? E/Zygote: MountEmulatedStorage()
01-23 10:24:04.406 27976-27976/? I/libpersona: KNOX_SDCARD checking this for 10285
01-23 10:24:04.406 27976-27976/? E/Zygote: v2
01-23 10:24:04.406 27976-27976/? I/libpersona: KNOX_SDCARD not a persona
01-23 10:24:04.411 27976-27976/? I/SELinux: Function: selinux_compare_spd_ram, SPD-policy is existed. and_ver=SEPF_GT-I9500_5.0.1 ver=38
01-23 10:24:04.421 27976-27976/? I/SELinux: Function: selinux_compare_spd_ram , priority [1] , priority version is VE=SEPF_GT-I9500_5.0.1_0038
01-23 10:24:04.421 27976-27976/? E/SELinux: [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL
01-23 10:24:04.426 27976-27976/? I/art: Late-enabling -Xcheck:jni
01-23 10:24:04.501 27976-27976/com.iqpslb.osamasw D/ResourcesManager: creating new AssetManager and set to /data/app/com.iqpslb.osamasw-1/base.apk
01-23 10:24:04.606 27976-27976/com.iqpslb.osamasw D/AndroidRuntime: Shutting down VM
01-23 10:24:04.616 27976-27976/com.iqpslb.osamasw E/AndroidRuntime: FATAL EXCEPTION: main
                                                                    Process: com.iqpslb.osamasw, PID: 27976
                                                                    java.lang.RuntimeException: Unable to create service com.parse.PushService: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context com.parse.ParsePlugins$Android.applicationContext()' on a null object reference
                                                                        at android.app.ActivityThread.handleCreateService(ActivityThread.java:3158)
                                                                        at android.app.ActivityThread.access$1900(ActivityThread.java:177)
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1531)
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                        at android.os.Looper.loop(Looper.java:145)
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5942)
                                                                        at java.lang.reflect.Method.invoke(Native Method)
                                                                        at java.lang.reflect.Method.invoke(Method.java:372)
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389)
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)
                                                                     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context com.parse.ParsePlugins$Android.applicationContext()' on a null object reference
                                                                        at com.parse.PushService.onCreate(PushService.java:230)
                                                                        at android.app.ActivityThread.handleCreateService(ActivityThread.java:3148)
                                                                        at android.app.ActivityThread.access$1900(ActivityThread.java:177) 
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1531) 
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                        at android.os.Looper.loop(Looper.java:145) 
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5942) 
                                                                        at java.lang.reflect.Method.invoke(Native Method) 
                                                                        at java.lang.reflect.Method.invoke(Method.java:372) 
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389) 
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184) 
0

thanks to this tutorial I knew what I MISSED
https://www.youtube.com/watch?v=8cKy1yT8ZKc
my code is fine just one line solve my problem
android:name = ".Reciever"
add this to application tag in Android Manifest and no more crashed :P
problem solved but no one solve it here .

Edited by OsaMasw

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