You need to provide execute permissions to your sh script. 

To do that : `sudo chmod +x d2j_invoke.sh`



Still If you find no luck use,

```chmod a+x *.sh```

In the following example:

    cout&lt;&lt;&quot;\n&quot;[a==N];

I have no clue about what the `[]` option does in `cout`, but it does not print a newline when the value of `a` is equal to `N`.

what does cout &lt;&lt; &quot;\n&quot;[a==N]; do?

I used gradle build command in Centos 7 terminal and I got output:

&lt;!-- language: shell --&gt;

    FAILURE: Build failed with an exception.

    * What went wrong:
    Could not create service of type InitScriptHandler using BuildScopeServices.createInitScriptHandler().

    * Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.


Gradle Could not create service of type InitScriptHandler using BuildScopeServices.createInitScriptHandler()

I downloaded dex2jar and now trying to use it, but if I type &#39;sh d2j-dex2jar.sh&#39; it shows the following message.

    d2j-dex2jar.sh: line 36: ./d2j_invoke.sh: Permission denied

At first I thought that the permission was denied because the programme required the root permission, so I also tried adding &#39;sudo&#39; to the command, and it did not work either. How should I solve this problem?

Cannot use dex2jar on my mac: permission denied

I downloaded dex2jar and now trying to use it, but if I type 'sh d2j-dex2jar.sh' it shows the following message.
<pre><code class="hljs language-arduino">d2j-dex2jar.sh: line 36: ./d2j_invoke.sh: Permission denied
</code></pre>
At first I thought that the permission was denied because the programme required the root permission, so I also tried adding 'sudo' to the command, and it did not work either. How should I solve this problem?

I am using the new Android Design Support library to implement a navigation drawer in my application.

**I can&#39;t figure out how to change the color of a selected item!**

Here is the xml of the menu :

    &lt;menu xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;
    &lt;group android:checkableBehavior=&quot;single&quot;&gt;
        &lt;item
            android:id=&quot;@+id/navigation_item_1&quot;
            android:icon=&quot;@drawable/ic_1&quot;
            android:title=&quot;@string/navigation_item_1&quot;/&gt;

        &lt;item
            android:id=&quot;@+id/navigation_item_2&quot;
            android:icon=&quot;@drawable/ic_2&quot;
            android:title=&quot;@string/navigation_item_2&quot;/&gt;
    &lt;/group&gt;
&lt;/menu&gt;

And here is the navigationview xml which is placed inside a `android.support.v4.widget.DrawerLayout` :

    &lt;android.support.design.widget.NavigationView
        android:id=&quot;@+id/activity_main_navigationview&quot;
        android:layout_width=&quot;wrap_content&quot;
        android:layout_height=&quot;match_parent&quot;
        android:layout_gravity=&quot;start&quot;
        app:headerLayout=&quot;@layout/drawer_header&quot;
        app:itemIconTint=&quot;@color/black&quot;
        app:itemTextColor=&quot;@color/primary_text&quot;
        app:menu=&quot;@menu/menu_drawer&quot;&gt;

        &lt;TextView
            android:id=&quot;@+id/main_activity_version&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:layout_gravity=&quot;bottom&quot;
            android:layout_marginBottom=&quot;@dimen/activity_vertical_margin&quot;
            android:layout_marginLeft=&quot;@dimen/activity_horizontal_margin&quot;
            android:textColor=&quot;@color/primary_text&quot; /&gt;

    &lt;/android.support.design.widget.NavigationView&gt;

Thank you for your help !

[EDIT]
I have already looked at solutions such as this one : [Change background color of android menu][1].

It seems to be quite a hack and I thought that with the new Design Support Library, something cleaner would have been introduced?


  [1]: https://stackoverflow.com/questions/2719173/change-background-color-of-android-menu

Change the color of a checked menu item in a navigation drawer

I have a strange situation with Jenkins when trying to run the tests.

The configuration of the job clearly specifies to run the tests on this specific avd: &quot;**hudson_en-US_160_HVGA_android-18_armeabi-v7a**&quot;, but for some odd reasons, during the build process, 2 devices are found. One of the devices is the previous one, but the other is called &quot;**unknown-sdk**&quot;.

![enter image description here][1]

The tests are successfully executed on the specific avd, and fail on &quot;unknown-sdk&quot;:

The relevant portion of the log:

&gt; [SR.runTests] Executing instrumentation suite on 2
&gt; device(s).   
&gt; [SR.runTests] [emulator-8215] Starting
&gt; execution.   
&gt; [SR.runTests] [localhost:8216] Starting
&gt; execution.
&gt; 
&gt; Running am instrument -w -r  -e class com.smoke.tests.LoginTest
&gt; com.muume.dev.test/android.support.test.runner.AndroidJUnitRunner on
&gt; unknown-sdk-localhost:8216
&gt; 
&gt; 2015-06-17 11:54:05 [SDR.printStream] [localhost:8216] STDOUT 11:54:05
&gt; I/InstrumentationResultParser: test run failed: &#39;Unable to find
&gt; instrumentation info for:
&gt; ComponentInfo{com.muume.dev.test/android.support.test.runner.AndroidJUnitRunner}

As you can see, it detected 2 devices: **emulator-8215** which is the known avd, and **localhost-8216** which is the unknown and causes the problems.

My question is how to restrict the tests to run only one single emulator, and from where did the &quot;unknown-sdk-localhost&quot; comes from.



  [1]: http://i.stack.imgur.com/u4AZv.png

&quot;unknown-sdk&quot; device when executing tests in Jenkins

I am using design support to create tabs. I am also using `ViewPager` for swipable tabs.

Now, I don&#39;t know how to use only icons instead of texts in tabs. I tried finding out but didn&#39;t get any success.

My code:

    Toolbar toolbar;
    private TabLayout tabLayout;
    private ViewPager viewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewPager = (ViewPager) findViewById(R.id.pager);
        setupViewPager(viewPager);
        setupTablayout();
    }

    private void setupTablayout() {
        tabLayout = (TabLayout) findViewById(R.id.tabLayout);
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
        tabLayout.setupWithViewPager(viewPager);
    }

    class MyPagerAdapter extends FragmentPagerAdapter {

        private final List&lt;Fragment&gt; mFragmentList = new ArrayList&lt;&gt;();
        private final List&lt;String&gt; mFragmentTitleList = new ArrayList&lt;&gt;();

        public MyPagerAdapter(FragmentManager manager) {
            super(manager);
        }

        @Override
        public Fragment getItem(int position) {
            return mFragmentList.get(position);
        }

        @Override
        public int getCount() {
            return mFragmentList.size();
        }

        public void addFrag(Fragment fragment, String title) {
            mFragmentList.add(fragment);
            mFragmentTitleList.add(title);
        }

        @Override
        public CharSequence getPageTitle(int position) {
            mFragmentTitleList.get(position)
        }
    }

    private void setupViewPager(ViewPager viewPager) {
        MyPagerAdapter adapter = new MyPagerAdapter(getSupportFragmentManager());
        adapter.addFrag(new frag(), &quot;CAT&quot;);
        adapter.addFrag(new frag(), &quot;DOG&quot;);
        adapter.addFrag(new frag(), &quot;BIRD&quot;);
        viewPager.setAdapter(adapter);
    }

Tablayout with icons only

This is a part of my manifest:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        package=&quot;com.example.asd&quot;
        android:versionCode=&quot;118&quot;
        android:versionName=&quot;118&quot; &gt;
    
        &lt;uses-sdk
            android:minSdkVersion=&quot;14&quot;
            android:targetSdkVersion=&quot;19&quot; /&gt;
    
       
        &lt;application
            android:name=&quot;com.example.asd.AsdApplication&quot;
            android:allowBackup=&quot;true&quot;
            android:allowTaskReparenting=&quot;true&quot;
            android:theme=&quot;@style/AsdTheme&quot; &gt;
            ...
            
            &lt;provider
                android:name=&quot;com.example.asd.database.hq.ContentProviderDB&quot;
                android:authorities=&quot;ourContentProviderAuthorities&quot; &gt;
            &lt;/provider&gt;
            &lt;provider
                android:name=&quot;android.support.v4.content.FileProvider&quot;
                android:authorities=&quot;com.example.asd.fileprovider&quot;
                android:exported=&quot;false&quot;
                android:grantUriPermissions=&quot;true&quot;&gt;
                &lt;meta-data
                    android:name=&quot;android.support.FILE_PROVIDER_PATHS&quot;
                    android:resource=&quot;@xml/filepaths&quot; /&gt;
            &lt;/provider&gt;
    
           ...
        &lt;/application&gt;
    
    &lt;/manifest&gt;

This is the filepaths file in raw/xml/filepaths.xml

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;paths xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;
        &lt;files-path name=&quot;media&quot;/&gt;
    &lt;/paths&gt;

I download a video from internet and save it to internal storage this way:

	public static boolean saveInputStreamToInternalStorageFile(Context context, String filename, byte[] dataToWrite, Context ctx) {
		FileOutputStream fos;
		try {
			fos = new FileOutputStream(context.getFilesDir() + File.separator + filename);
		
			ObjectOutputStream oos = new ObjectOutputStream(fos);
			oos.writeObject(dataToWrite);
			oos.close();
			return true;
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return false;
		} catch (IOException e) {
			e.printStackTrace();
			return false;
		}
	}


I try to use it like so:

	private void playVideoFromDeviceWithWorkaround(String fileName) {
		
		File newFile = new File(getFilesDir(), fileName);
		Uri contentUri = FileProvider.getUriForFile(getApplicationContext(), &quot;com.example.asd&quot;, newFile);
		
		try {
			vvVideoFullscreen.setVideoURI(contentUri);
			showMediaControls = true;
			playVideo();
		} catch (Exception e) {
			playVideoFromNetwork();
		}

	}

At this line:

    Uri contentUri = FileProvider.getUriForFile(getApplicationContext(), &quot;com.example.asd&quot;, newFile); 

I get the following error:

    java.lang.NullPointerException: Attempt to invoke virtual method &#39;android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)&#39; on a null object reference
    at android.support.v4.content.FileProvider.parsePathStrategy(FileProvider.java:560)
    at android.support.v4.content.FileProvider.getPathStrategy(FileProvider.java:534)
    at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:376)



FileProvider crash - npe attempting to invoke XmlResourceParser on a null String

I have many flavors of my Android app, and *I want all but one to use the same key*. There is one that needs to use a different key.

**How do I override the `signingConfig` for just 1 flavor of the app (but within the same build type e.g. &quot;release&quot;)?**

 - I would like all builds by default to use the main release configuration. 
 - I only want to *override 1 flavor*
 - I want to be able to run all release builds with a single `gradlew assembleRelease` command

This last point is important as I currently have over 120 different flavors and growing. In order to customise every single flavor individually is a lot of extra work.


----------

Related posts I have tried:

[Producing multiple builds signed with different keys from single build type][1]

 - this requires configuration for each flavor
 - it doesn&#39;t seem to use my custom `signingConfig` anyway

[Signing product flavors with gradle][2]

 - accepted solution doesn&#39;t work (for me)
 - according to [a comment][5] this is possible by putting `buildTypes` inside the `productFlavors` but I do not understand how to do this.

[Debug Signing Config on Gradle Product Flavors][3]

 - as explained on blog post: [Building Multiple Editions of an Android App with Gradle][4]
 - &lt;strike&gt;it doesn&#39;t work&lt;/strike&gt; actually it **works perfectly**
 - but it doesn&#39;t scale well for 119 flavors

Overall, each solution seems to still use the default release config, instead of my custom config.


----------


Important parts of my `build.gradle` look like this:

    signingConfigs {
        releaseConfig {
            storeFile file(&#39;key&#39;)
            storePassword &quot;pass&quot;
            keyAlias &quot;alias&quot;
            keyPassword &quot;pass&quot;
        }

        custom {
            storeFile file(&#39;custom_key&#39;)
            storePassword &quot;pass&quot;
            keyAlias &quot;alias&quot;
            keyPassword &quot;pass&quot;
        }
    }

    productFlavors {
        apple {
            applicationId &quot;demo.apple&quot;
        }
        banana {
            applicationId &quot;demo.banana&quot;
        }
        
        // def customConfig = signingConfigs.custom
        custom {
            applicationId &quot;custom.signed.app&quot;
            // signingConfig customConfig
        }
     }


    buildTypes {
        debug {
            applicationIdSuffix &quot;.debug&quot;
        }
        release {
             signingConfig signingConfigs.releaseConfig
             // productFlavors.custom.signingConfig signingConfigs.custom
        }
    }


  [1]: https://stackoverflow.com/a/17825595/383414
  [2]: https://stackoverflow.com/a/17074660/383414
  [3]: https://stackoverflow.com/a/26579662/383414
  [4]: http://blog.robustastudio.com/mobile-development/android/building-multiple-editions-of-android-app-gradle/
  [5]: https://stackoverflow.com/questions/17040494/signing-product-flavors-with-gradle?rq=1#comment33498762_17044746

Content Type	Original Author	Original Content on Stackoverflow
Question	user4911668	View Question on Stackoverflow
Solution 1 - Android	Shivam Verma	View Answer on Stackoverflow
Solution 2 - Android	Akshay Shinde	View Answer on Stackoverflow

Cannot use dex2jar on my mac: permission denied

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Gradle Could not create service of type InitScriptHandler using BuildScopeServices.createInitScriptHandler()

what does cout << "\n"[a==N]; do?

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