This is called for activities that set launchMode to &quot;singleTop&quot; in their package, or if a client used the FLAG_ACTIVITY_SINGLE_TOP flag when calling startActivity(Intent).


If you set to single top, the activity will not be launched if it is already running at the top of the history stack. It will not relaunch just show from stack.

Check this link [onNewIntent()][1]


  [1]: http://www.helloandroid.com/tutorials/communicating-between-running-activities

In manifest.xml, in an activity tag set launchmode=&quot;singleTask&quot;  

Above answers are incomplete. 

In case the activity &#39;a1&#39; of Application &#39;A1&#39; has launch mode &quot;singleTask&quot; or &quot;singleTop&quot; and is already alive (in task t1) but paused, and now another task (say Task t2) (usually another android app) sends an intent to activity a1 of application A1, then instead of creating another instance of activity in task t2, android resumes a1 from task t1, by issuing a callback to onNewIntent(intent) method in a1.

[Tasks and back stack](https://developer.android.com/guide/components/activities/tasks-and-back-stack.html) is an important concept, no blog explains better than android documentation itself.

Can **Active Admin** use my current **Devise** user model? It already has a column named `admin`, and if it&#39;s `true`, I&#39;d like to bypass the Active admin login, when going to `/admin`.

Is this possible?

Current routes:


    #Active admin
    ActiveAdmin.routes(self)
      
    #Devise
    devise_for :admin_users, ActiveAdmin::Devise.config
    devise_for :users, :path =&gt; &quot;account&quot;

The rest is basically standard Devise + Active admin

Rails 3 - Can Active_admin use an existing user model?

I started to read several tutorials about RequireJS. In none of them was the &quot;define&quot; keyword explained satisfactorily for me. Could someone help me with the following :  

    define(
      [&quot;Models/Person&quot;, &quot;Utils/random&quot;, &quot;jquery&quot;], 
      function (Person, randomUtility, $) {..}
    )  

What is &quot;define&quot;? Is define a function with an array and an anonymous function inside of it? Or is it something else? Can someone give me more information about this kind of definitions?

Addition: Thank you nnnnnn and pradeek for your answers. Here in Europe it was 2:30 in the night when I was posting the question. Maybe therefore I didn&#39;t recognize it was a simple function call.


Explanation of define of the RequireJS library

What is the real use of `onNewIntent()` in the activity life cycle and how do we use this method?

How we can use onNewIntent() in any Activity?

<p>What is the real use of <code>onNewIntent()</code> in the activity life cycle and how do we use this method?</p>


I want to parse JSON arrays and using gson. Firstly, I can log JSON output, server is responsing to client clearly. 

Here is my JSON output:

&lt;!-- language: lang-json --&gt;

     [
          {
               id : &#39;1&#39;,
               title: &#39;sample title&#39;,
               ....
          },
          {
               id : &#39;2&#39;,
               title: &#39;sample title&#39;,
               ....
         },
          ...
     ]

I tried this structure for parsing. A class, which depends on single `array` and `ArrayList` for all JSONArray.

&lt;!-- language: lang-java --&gt;

     public class PostEntity {

          private ArrayList&lt;Post&gt; postList = new ArrayList&lt;Post&gt;();

          public List&lt;Post&gt; getPostList() { 
               return postList; 
          }

          public void setPostList(List&lt;Post&gt; postList) { 
               this.postList = (ArrayList&lt;Post&gt;)postList; 
          }	
     }

Post class:

&lt;!-- language: lang-java --&gt;

     public class Post {
     
          private String id;
          private String title;

          /* getters &amp; setters */
     }


When I try to use gson no error, no warning and no log:


&lt;!-- language: lang-java --&gt;

     GsonBuilder gsonb = new GsonBuilder();
     Gson gson = gsonb.create();

     PostEntity postEnt;
     JSONObject jsonObj = new JSONObject(jsonOutput);
     postEnt = gson.fromJson(jsonObj.toString(), PostEntity.class);

     Log.d(&quot;postLog&quot;, postEnt.getPostList().get(0).getId());

What&#39;s wrong, how can I solve?

How to Parse JSON Array with Gson

My app allows the user to press a button, it opens the camera, they can take a photo and it will show up in an `ImageView`. If the user presses back or cancel while the camera is open I get this force close - Failure delivering result ResultInfo{who=null, request=1888, result=0, data=null} to activity... so i am guessing the result=0 is the issue what would I need to insert to make this stop force closing?

Below is my code. I know I am forgetting something but just cant figure it out! (Admittedly I am about 2 weeks into learning android development). Thanks for any help! 
```java
private static final int CAMERA_REQUEST = 1888; 
private ImageView imageView;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    this.imageView = (ImageView)this.findViewById(R.id.photostrippic1);

    ImageView photoButton = (ImageView) this.findViewById(R.id.photostrippic1);



    photoButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
            startActivityForResult(cameraIntent, CAMERA_REQUEST); 
        }

    });

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
        if (requestCode == CAMERA_REQUEST) {  
            Bitmap photo = (Bitmap) data.getExtras().get(&quot;data&quot;); 
            imageView.setImageBitmap(photo);
        }  
```
I guess I would need a &quot;else&quot; in there somewhere but I dont exactly know to do that.

below is the logcat

        java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=0, data=null} to activity {photo.booth.app/photo.booth.app.PhotoboothActivity}: java.lang.NullPointerException
        at android.app.ActivityThread.deliverResults(ActivityThread.java:2934)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:2986)
        at android.app.ActivityThread.access$2000(ActivityThread.java:132)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1068)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:150)
        at android.app.ActivityThread.main(ActivityThread.java:4293)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:507)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
        at dalvik.system.NativeStart.main(Native Method)
        Caused by: java.lang.NullPointerException
        at photo.booth.app.PhotoboothActivity.onActivityResult(PhotoboothActivity.java:76)
        at android.app.Activity.dispatchActivityResult(Activity.java:4108)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:2930)
        ... 11 more
        	

java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=0, data=null} to activity

I have a &#39;page&#39; that has a number of components on it, and who&#39;s content is longer than the height of the device.  Fine, just put all of the layout (the entire page) inside a `ScrollView`, no problem.

One of the components is a `ViewPager`.  This renders correctly, but the response to a swipe/fling is not performing correctly, it is jittery and doesn&#39;t always work.  It seems to be getting &#39;confused&#39; with the `ScrollView`, so only works 100% when you fling in an exact horizontal line.

If I remove the `ScrollView`, the ViewPager responds perfectly.

I&#39;ve had a search around and have not found this as a known defect.
Has anyone else experienced this?

* Platform Version: 1.6
* Compatibility Library v4.  
* Device: HTC Incredible S

Below is some example code for you to test with, comment out `ScrollView` to see it working correctly.

Activity:

    package com.ss.activities;
    
    import com.ss.R;
    
    import android.app.Activity;
    import android.content.Context;
    import android.graphics.Color;
    import android.os.Bundle;
    import android.os.Parcelable;
    import android.support.v4.view.PagerAdapter;
    import android.support.v4.view.ViewPager;
    import android.view.View;
    import android.widget.TextView;
    
    public class PagerInsideScollViewActivity extends Activity {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
    
            ViewPager vp = (ViewPager) findViewById(R.id.viewpager);
            vp.setAdapter(new MyPagerAdapter(this));
        }
    }
    
    class MyPagerAdapter extends PagerAdapter {
    
        private Context ctx;
    
        public MyPagerAdapter(Context context) {
            ctx = context;
        }
    
        @Override
        public int getCount() {
            return 2;
        }
    
        @Override
        public Object instantiateItem(View collection, int position) {
    
            TextView tv =  new TextView(ctx);
            tv.setTextSize(50);
            tv.setTextColor(Color.WHITE);
            tv.setText(&quot;SMILE DUDE, SMILE DUDE, SMILE DUDE, SMILE DUDE, SMILE DUDE, &quot; +
                    &quot;SMILE DUDE, SMILE DUDE, SMILE DUDE, SMILE DUDE, SMILE DUDE, &quot; +
                    &quot;SMILE DUDE, SMILE DUDE, SMILE DUDE, SMILE DUDE, SMILE DUDE, &quot; +
                    &quot;SMILE DUDE, SMILE DUDE, SMILE DUDE&quot;);
    
            ((ViewPager) collection).addView(tv);
    
            return tv;
    
        }
    
        @Override
        public void destroyItem(View collection, int position, Object view) {
             ((ViewPager) collection).removeView((View) view);
        }
    
        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view == object;
        }
    
        @Override
        public Parcelable saveState() {
            return null;
        }
    
        @Override
        public void restoreState(Parcelable arg0, ClassLoader arg1) {
        }
    
        @Override
        public void startUpdate(View arg0) {
        }
    
        @Override
        public void finishUpdate(View arg0) {
        }
    }

Layout:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
        &lt;ScrollView
             xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
            android:layout_width=&quot;fill_parent&quot;
            android:layout_height=&quot;fill_parent&quot; &gt;
    
            &lt;LinearLayout
                android:layout_width=&quot;fill_parent&quot;
                android:layout_height=&quot;fill_parent&quot;
                android:orientation=&quot;vertical&quot; &gt;
    
                &lt;android.support.v4.view.ViewPager
                    android:id=&quot;@+id/viewpager&quot;
                    android:layout_width=&quot;fill_parent&quot;
                    android:layout_height=&quot;300dp&quot; /&gt;
                
            &lt;/LinearLayout&gt;
    
        &lt;/ScrollView&gt;

ViewPager inside a ScrollView does not scroll correclty

I have implemented a custom dialog for my application. I want to implement that when the user clicks outside the dialog, the dialog will be dismissed.
What do I have to do for this?

How to dismiss the dialog with click on outside of the dialog?

I want to put a Listener over a `CheckBox`. I looked for info and it is like this:

    satView = (CheckBox)findViewById(R.id.sateliteCheckBox);
    
    satView.setOnCheckedChangeListener(new OnCheckedChangeListener() {
		@Override
		public void onCheckedChanged(RadioGroup group, int checkedId) {
            if (isChecked){
                // perform logic
            }
		}

    });

The problem is that Eclipse thinks it&#39;s an `OnCheckedChangeListener` for a `RadioGroup` and it doesn&#39;t work. How can I fix this?

Content Type	Original Author	Original Content on Stackoverflow
Question	neeraj t	View Question on Stackoverflow
Solution 1 - Android	Padma Kumar	View Answer on Stackoverflow
Solution 2 - Android	Ravikiran	View Answer on Stackoverflow
Solution 3 - Android	Jaydev	View Answer on Stackoverflow

How we can use onNewIntent() in any Activity?

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Explanation of define of the RequireJS library

Rails 3 - Can Active_admin use an existing user model?

Attributions