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Android - How to disable auto rotation in portrait mode?

I have an activity that always rotates in the 2 view modes(portrait and auto-rotation) but want it to rotate only in auto-rotation mode.
I have set in my manifest
<activity
android:name=".Controlling"
android:screenOrientation="portrait">
</activity>
but when I am in portrait mode (when the activity should be fixed), it is still rotating.
I was looking to do it programmatically by using
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
but still does nothing
Do you know how to do it?

Try to change out android:screenOrientation="sensorPortrait" in AndroidManifest.xml

If you are doing it from fragment then you need to give an activity context.
getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);
Try with this and let me know it works for you or not.

Screen still can rotate even if orientation is set to Portrait

I know the tile seems to be very confusing, but yeah, it happened to my application. Ok, here's the story.
Here's the key settings in Manifest:
android:screenOrientation="portrait"
android:configChanges="orientation|screenSize|keyboardHidden"
android:windowSoftInputMode="stateAlwaysHidden|adjustPan"
In my Activity.java, I also override onConfigurationChanged(Configuration config), which will print out current orientation.
Here comes the most interesting part. I start a rotatable Application, say Gallery (assume it can rotate), from my application in landscape using Intent. Keep the phone in landscape, and press back key. The newly launched activity, in this case Gallery, will quit, and my application will restart. In theory, my application should display in portrait since I have set the screenOrientation to portrait. However, in reality, my application just stays in portrait for 1 second, and then jumps to landscape, and jumps back to portrait again.
I start a thread to print out requestedOrientation of my application after onRestart is called. And I find out that the output is always "1", which is "portrait". Yet, the output from onConfigurationChanged gives my a current orientation of landscape!
So, I'm totally confused. How can this happen? Can someone give me some advice?

May be you use screen orientation in an activity. But another activity will be rotate. in below example ActivityA's orientation will not change but ActivityB will be rotate. If you write android:screenOrientation="portrait" in app tag and not mention anything in activity. It doesn't work anything. So please mention screenOrientation in activity.
<activity
android:name=".ActivityA"
android:screenOrientation="portrait">
</activity>
<activity
android:name=".ActivityB">
</activity>

are you using android:screenOrientation="portrait"
android:configChanges="orientation|screenSize|keyboardHidden"
inside your application or under activity

Screen Orientation Handling

In my application, most of the activities has fixed layout - portrait.
So I've mentioned in manifest:
<activity
android:name="com.example.activity5"
android:screenOrientation="portrait" />
But in one or two activities I've to show landscape layout also, in such a way that by default the activity opens in portrait mode. But if user tilts the phone to left/right it changes to landscape. (also if user rotates the phone to upside down, activity should not go to portrait mode).
That is, basically, I want orientation change in 3-way. Default(Potrait) & Left-Right(Landscape).
So, what changes do I need to do in my code & xmls?
Should I choose "sensorPortrait" OR "sensorLandscape"
Should I use android:configChanges="orientation"
I tried few steps, but they are throwing null pointer exception.
I dont know what I'm missing.
P.S. Both orientation have different layouts.
Thank You

I think you want to do this:
1) Just remove android:screenOrientation="portrait", and
2) In your code, in onCreate(), add this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
--(UNRELATED) SIDE NOTE--
To force landscape use this:
<activity android:name="com.example.activity5"
android:screenOrientation="landscape"
android:configChanges="orientation|keyboardHidden" />

Write to Main.class(OnCreate):
setContentView(R.layout.activity_main);
setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

Ensure screen orientation is fixed to portrait and NEVER changes

I would like my Android app to instantiate it's home screen activity one time only. I am managing the back stack appropriately to achieve this but have just discovered an orientation issue when the app starts up.
Visually this orientation change only shows itself on the emulator. (probably runs too fast to be observed on a device).
Here's what happens :: -->
activity.onCreate()
activity.onDestroy()
activity.onCreate()
This sequence makes sense and is caused by the change in orientation. What does not make sense (to me) is that it happens at all because I have done the following to prevent an orientation change :: -->
AndroidManifest.xml contains
android:screenOrientation="portrait"
for all my activities and in the home screen activity onCreate() method, I'm calling
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
So why do I get an orientation change?

Add android:screenOrientation="portrait" in your manifest file where you declare your activity like this
<activity android:name=".yourActivity"
....
android:screenOrientation="portrait"/>
if you want to do using java code
try
setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
before you setContentView for your activity in onCreate()
see here

Handling Device Rotation

I want to disable the view change on device rotation for the time being. Its giving foreclose error when i rotate the device and starts all over again.
I have used tab activity everywhere.
How should i proceed ?

In your manifest, you can define which activities you don't want to rotate automatically by setting i.e.
android:screenOrientation="portrait"

You can add this on your manifest:
<activity android:name=".YourActivity"
android:screenOrientation="portrait"
android:label="#string/activity_label"/>
Ger

What you need to set is set the configChanges attribute of the activity in your manifest. This will still allow the user to rotate the 'phone, but tells Android not to restart your activity when it does so.