I think this should do it:

    getWindow().clearFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

See [API][1] for details.


  [1]: http://developer.android.com/reference/android/view/Window.html#clearFlags(int)

If you instead set a flag android:keepScreenOn=&quot;true&quot; ([documentation][1]) only on the views that need to keep the screen on, you wouldn&#39;t need to reset the flag manually.

  [1]: http://developer.android.com/reference/android/view/View.html#attr_android:keepScreenOn

**Another approach**

    getWindow().setFlags(this.getWindow().getFlags() &amp; ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

[Also read this][1]

and you can also set `android:keepScreenOn=&quot;true&quot;` in the root View in xml.


  [1]: https://developer.android.com/training/scheduling/wakelock.html

Directly from documentation:

  Note: You don&#39;t need to clear the FLAG_KEEP_SCREEN_ON flag unless you no longer   want the screen to stay on in your running application (for example, if you want the screen to time out after a certain period of inactivity). The window manager takes care of ensuring that the right things happen when the app goes into the background or returns to the foreground. But if you want to explicitly clear the flag and thereby allow the screen to turn off again, use clearFlags(): getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON).

I have the following function:

    def copy_file(source_file, target_dir):
        pass

Now I would like to use `multiprocessing` to execute this function at once:

    p = Pool(12)
    p.map(lambda x: copy_file(x,target_dir), file_list)

The problem is, lambda&#39;s can&#39;t be pickled, so this fails. What is the most neat (pythonic) way to fix this?



How to let Pool.map take a lambda function

I&#39;m writing a game in go. In C++ I would store all my entity classes in an array of the BaseEntity class. If an entity needed to move about in the world it would be a PhysEntity which is derived from a BaseEntity, but with added methods. I tried to imitate this is go:

    package main
    
    type Entity interface {
    	a() string
    }
    
    type PhysEntity interface {
    	Entity
    	b() string
    }
    
    type BaseEntity struct { }
    func (e *BaseEntity) a() string { return &quot;Hello &quot; }
    
    type BasePhysEntity struct { BaseEntity }
    func (e *BasePhysEntity) b() string { return &quot; World!&quot; }
    
    func main() {
    	physEnt := PhysEntity(new(BasePhysEntity))
    	entity := Entity(physEnt)
    	print(entity.a())
    	original := PhysEntity(entity)
    // ERROR on line above: cannot convert physEnt (type PhysEntity) to type Entity:
    	println(original.b())
    }

This will not compile as it cant tell that &#39;entity&#39; was a PhysEntity. What is a suitable alternative to this method?


Casting back to more specialised interface

I used:

    getWindow().addFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

How do I resume to Default state (no-keep-on)?

Disable keep screen on

I used:
<pre><code class="hljs language-scss">getWindow().addFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
</code></pre>
How do I resume to Default state (no-keep-on)?

I&#39;m working on a little personal todo list app and so far everything has been working quite well. There is one little quirk I&#39;d like to figure out. Whenever I go to add a new item, I have a Dialog with an EditText view showing inside. When I select the EditText view, the keyboard comes up to enter text, as it should. In most applications, the default seems to be that the shift key is held for the first letter... although it does not do this for my view. There has to be a simple way to fix, but I&#39;ve searched the reference repeatedly and cannot find it. I&#39;m thinking there has to be an xml attribute for the reference loaded by the Adapter, but I can&#39;t find out what it is.

First letter capitalization for EditText

I have a view with radios, inputs and a button and when I click it, I want to check that all inputs contain information. How can I iterate through the view&#39;s elements in the activity and check if every textview meets the aforementioned requirement ? Thanks.

How to iterate through a view&#39;s elements

from my Android app, I would like to open a link to a Facebook profile in the official Facebook app (if the app is installed, of course). For iPhone, there exists the `fb://` URL scheme, but trying the same thing on my Android device throws an `ActivityNotFoundException`.

Is there a chance to open a Facebook profile in the official Facebook app from code?

Open Facebook page from Android app?

I have TextView added Programmatically in to LinearLayout and on some external events I want to decrease bottom margin of that TextView to -10, for that I tried following. 

    LinearLayout.LayoutParams lastTxtParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    lastTxtParams.setMargins(0, 0, 0, -10);
    mOldTextView.setLayoutParams(lastTxtParams);
    mOldTextView.invalidate();


Is the right way of modifying Margin of widget that has been added to View?   
Some how it is not working.


How to Change Margin of TextView

I&#39;m passing to an activity the number to call by a bundle

and then, in such activity, I have a button to call to that number, this is the code:

    callButton.setOnClickListener(new OnClickListener() {
                public void onClick(View v) {
                    Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(bundle.getString(&quot;mobilePhone&quot;)));
                }
            }); 

Something is wrong, because when I press the button nothing happens...

What am I doing wrong?

PD: I&#39;m using Android 1.5 compatible project... maybe phone call is incompatible to 1.5?

How to make a phone call programmatically?

I have a problem with flag bits.
I have an `int` variable to hold flags. First I set some flags to that variable. Later I need check how many flags were set in that variable. But I don&#39;t know to do it.

Checking flag bits java

I have seen lots of ways of running Perl code or scripts, with different flags. However, when I try to google for what each flag means, I mainly get results to generic Perl sites and no specific information regarding the flags or their use is found there.

Below are the flags that I encounter most often, and I don&#39;t have a clue what they mean:

 - perl **-pe**
 - perl **-pi**
 - perl **-p**
 - perl **-w**
 - perl **-d**
 - perl **-i**
 - perl **-t**

I will be very grateful if you tell me what each of those mean and some use cases for them, or at least tell me a way of finding out their meaning.


Perl flags -pe, -pi, -p, -w, -d, -i, -t?

For testing purposes only, I am allowing my app APK to be downloaded and installed via a URL. Once downloaded on the phone, it can be launched with the Android app installer which gives the user an option to install it to their device and then run it.

Consider if we downloaded and ran the app in the way described above. The main/launcher activity in my app is a login page (`Activity A`). Once the user is authenticated, they are taken to the main area of the application, e.g. `Activity B`. So now the current activity stack of this task is `A &gt; B`.

I then press the home button on the phone and am taken to the Android home screen. I re-launch my app via the icon in the menu, and I am taken to `Activity A`, instead of `Activity B`. Either the activity stack is now `A &gt; B &gt; A`, or there are now two separate tasks with activity stacks `A &gt; B`, and `A` respectively. What I want is to be taken back to `Activity B` when I relaunch the app. Pressing back whilst in this state will take me back to `Activity B`.

This undesired behaviour only happens if I first open the app via the installer, and not if I open the app via the home screen/menu.

I looked into how the activities are being started by each mechanism. When we use the app installer, we see the following logs:

    INFO/ActivityManager(XXXX): Starting activity: Intent { dat=file:///mnt/sdcard/download/[my app].apk cmp=com.android.packageinstaller/.InstallAppProgress (has extras) }
    INFO/ActivityManager(XXXX): Starting activity: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=[my package]/[Activity A] }

via launcher / home screen:

    INFO/ActivityManager(XXXX): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=[my package]/[Activity A] }


When started with the installer we see it is using the flag `0x10000000`, but when started with the launcher we see it is using `0x10200000`. It is also using an intent category.

From the [docs][1] we see the flags are:

    public static final int FLAG_ACTIVITY_NEW_TASK
    Constant Value: 268435456 (0x10000000)

    public static final int FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
    Constant Value: 2097152 (0x00200000)

The flag `FLAG_ACTIVITY_RESET_TASK_IF_NEEDED` (which is being used when the app is launched from the launcher) seems to usually prevent a new task from being created if one already exists, and will restore the last used activity. This is the desired behaviour. Why is it not working in this situation? Is there anything I can do to make sure my application will always return me to the last Activity regardless of whether it was started through the app installer/launcher?

If I use `singleTask` it will always take me back to the main activity (`Activity A`) whenever I run the app (which is also not desirable).

Here is a question I found where someone is experiencing a similar problem (which has no accepted answer): https://stackoverflow.com/questions/5318885/app-loses-its-ability-to-remember-its-stack-when-launched-from-another-applicatio

EDIT: Checking for the flag `FLAG_ACTIVITY_BROUGHT_TO_FRONT` in `onCreate()` of our launcher activity (and then finishing if it is set) seems to fix the main symptom, but clearly the underlying issue is still there. Is there a more complete fix?

EDIT2: The same result occurs when you download/run the app from the Android Market, so some of the above details may not be relevant.

  [1]: http://developer.android.com/reference/android/content/Intent.html#FLAG_ACTIVITY_NEW_TASK

Activity stack ordering problem when launching application from Android app installer and from Home screen

Why are people always using enum values like `0, 1, 2, 4, 8` and not `0, 1, 2, 3, 4`?

Has this something to do with bit operations, etc.?

I would really appreciate a small sample snippet on how this is used correctly :)

    [Flags]
    public enum Permissions
    {
        None   = 0,
        Read   = 1,
        Write  = 2,
        Delete = 4
    }


Why do enum permissions often have 0, 1, 2, 4 values?

I&#39;m trying to update my C++ compiler to C++11.
I have searched a bit and I have come to the conclusion that I have to use the flag `-std=c++0x` or `-std=gnu++0x`, but I don&#39;t know many things about flags. Can anyone help me? (I&#39;m using Ubuntu 12.04.)

Here is the error that I get from the compiler when I attempt to use a library which is included in C++11 (i.e. array):

    #include &lt;array&gt;
    #include &lt;iostream&gt;
    
    int main()
    {
        std::array&lt;int, 3&gt; arr = {2, 3, 5};
        ...
    }
    

&gt; This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options.

Content Type	Original Author	Original Content on Stackoverflow
Question	OkyDokyman	View Question on Stackoverflow
Solution 1 - Android	Noel	View Answer on Stackoverflow
Solution 2 - Android	Alexander Abramov	View Answer on Stackoverflow
Solution 3 - Android	Zar E Ahmer	View Answer on Stackoverflow
Solution 4 - Android	NazarYavornytskyy	View Answer on Stackoverflow

Disable keep screen on

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Solution 4 - Android

Casting back to more specialised interface

How to let Pool.map take a lambda function

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