My question is related to android device problem.
We have an android device in our office:
Samsung Galaxy Note 2 - GN7100 (Android version 4.1.2)
We use this devices for android development & testing purpose. But currently the device is creating some problem related to Android Life Cycle. For e.g. in the onCreate() method, we've downloaded data from backend, and now if we rotate the device onCreate() will call again, but we restricted calling onCreate() on device rotation by adding the following line into the tag:
android:configChanges="orientation|screenLayout|keyboardHidden"
It was working fine but suddenly this trick isn't working, i.e. the device calling the onCreate() method. Then I do factory reset, but the problem still exist.
My ques is: if this is device issue, then how can we correct it?
Thanks in advance.
Try this
android:configChanges="keyboardHidden|orientation|screenSize"
and format your code.This worked for me
//Define Below in you Manifest file.
<activity
android:name="yourname"
android:configChanges="keyboardHidden|orientation|screenSize"
</activity>
//Define Below in your activity.
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
//your code
} else if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
//your code
}
}
Related
I have used ActivityInfo.SCREEN_ORIENTATION_LOCKED and ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED to control screen rotation in Android 4.4,it is good.But when I set the ActivityInfo.SCREEN_ORIENTATION_LOCKED in Android 4.2 ,it is useless.
How can I do it?
You have to declare in your manifest
<activity android:name=".MyActivity"
android:label="#string/app_name"
android:screenOrientation="portrait">
also you can use android:screenOrientation="landscape"
And in your code something like
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
Also you can see this guide.
You'll have to override it programatically. Get the current orientation, then if you toggle to fix the state, set that orientation as your application's orientation.
For Example:
int rotation=getResources().getConfiguration().orientation;
//ORIENTATION_LANDSCAPE = 2, ORIENTATION_PORTRAIT=1
if(rotation==1){
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}else{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
This will lock it to the current orientation.
And in order to release it, simply use ActivityInfo.SCREEN_ORIENTATION_SENSOR like this:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
That's it.
Now, the final code will look something like this:
if(allow_screen_change.equals("yes")){
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
}else if(allow_screen_change.equals("no")){
int rotation=getResources().getConfiguration().orientation;
//ORIENTATION_LANDSCAPE = 2, ORIENTATION_PORTRAIT=1
if(rotation==1){
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}else{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
}
I just made this and tested on HTC One X, running Android 4.2 and it works just fine. Hope it helps!
I have create sample program to test Orientation. If portrait mode and I tilt the phone the other way round I want my sample app to reversePortrait. After reading lot of questions on this - Figured we need to need use:
onConfigurationChanged(Configuration newConfig)
I was trying out the following:
#Override
public void onConfigurationChanged(Configuration newConfig)
{
super.onConfigurationChanged(newConfig);
Configuration c = getResources().getConfiguration();
Log.e("Config",""+c);
if (c.orientation == Configuration.ORIENTATION_PORTRAIT)
{
// portrait
Log.e("On Config Change","portrait");
}
else if (c.orientation == Configuration.ORIENTATION_LANDSCAPE)
{
// landscape
Log.e("On Config Change","LANDSCAPE");
}
}
manifest.xml
android:configChanges="orientation"
tried even this
android:configChanges="orientation|screensize"
Strange I am not getting logs inside OnConfigurationChange method.
Not sure. What is the problem here?
I am using minimum api 8 to target Api 18.
Can somebody help me out with this?
Thanks!
I had a same issue after changing target API to 19(4.4 kitkat)
You need to add layoutDirection attribute for targeting higher than version 17.
my attribute looks like:
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|layoutDirection"
The key is to add 'layoutDirection'
I just encountered this problem, and fixed it with this weird little trick.
Set your screenOrientation in your manifest, like so:
android:screenOrientation="sensor"
That fixed it for me.
Your code is no problem
Modify your manifest.xml
android:configChanges="orientation|keyboardHidden"
I hope it can help you
I add the following line to my Activity in the Android manifest
android:screenOrientation="nosensor"
then I add the below code to onCreate() in my Java class
if (isSmartphone(this))
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
else
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
But in the Kindle Fire devices it's not setting the orientation. Does anyone know how to fix this issue?
I am using onConfigurationChanged(). In that, when I am changing from LandScape to Portrait, it is calling if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) and shifting to Portrait from LandScape. But when I am changing from Portrait to Land-Scape, it is not changing to LandScape because it is calling if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) so, it is not changing from LandScape to Portrait.
Please help.
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
//int orientation = this.getResources().getConfiguration().orientation;
if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
Log.d("Entered to change as Portrait ","PPPPPPPPPPPPPPPPP");
setContentView(R.layout.settings);
} else if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Log.d("Entered to change as LandScape ","LLLLLLLLLLLLLLLLLLLL");
setContentView(R.layout.settings);
}
}
Just write the below code into onConfigurationChanged method and test
if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
Log.e("On Config Change","LANDSCAPE");
}else{
Log.e("On Config Change","PORTRAIT");
}
and write the android:configChanges="keyboardHidden|orientation" into your manifiest file like this
<activity android:name="TestActivity"
android:configChanges="keyboardHidden|orientation">
it's working at my side, i hope it helps you.
If you're on tablet also add |screenSize to android:configChanges
you should also be aware of:
Caution: Beginning with Android 3.2 (API level 13), the "screen size"
also changes when the device switches between portrait and landscape
orientation. Thus, if you want to prevent runtime restarts due to
orientation change when developing for API level 13 or higher (as
declared by the minSdkVersion and targetSdkVersion attributes), you
must include the "screenSize" value in addition to the "orientation"
value. That is, you must decalare
android:configChanges="orientation|screenSize". However, if your
application targets API level 12 or lower, then your activity always
handles this configuration change itself (this configuration change
does not restart your activity, even when running on an Android 3.2 or
higher device).
The issue is with the android:configChanges="orientation|keyboardHidden" .
if you remove |keyboardHidden from the androidmanifest.xml, then the onConfigurationChanged is only fired when you rotate from landscape to portrait, not when you go from portrait to landscape (at least in the default emulator).
Hope this helps.
In addition to above answers: If you override the onConfigurationChanged method in combination with the updating of the manifest file you are saying you are handling the configurationchanges yourself. Therefore adding:
setContentView(R.layout.layout.xml);
In your onConfigurationChanged method - where layout is your layout file - will fix the problem.
Write below code in your activity file.
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
Log.e("On Config Change","LANDSCAPE");
}
else{
Log.e("On Config Change","PORTRAIT");
}
}
Also write below code in your manifest file as follows:
<activity
android:name=".activities.TestActivity"
android:configChanges="orientation|screenSize|keyboardHidden"
/>
Write this line in the android Manifest.xml file:
<activity
android:name="MyActivity"
android:configChanges="orientation|keyboardHidden" />
I have prepared one application.My application will be supports both landscape and portrait.
When i change the orientation from portrait to landscape it is working fine,But when i change landscape to portrait it is not working.my code is,
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
System.out.println("orientation---"+getResources().getConfiguration().orientation);
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
setContentView(R.layout.main);
System.out.println("landscape-----");
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
setContentView(R.layout.main);
System.out.println("portrait-----");
}
}
Every time time it taking only landscape mode.I made mistake some where. please help.
System.out.println("orientation---"+getResources().getConfiguration().orientation);
The above SOP is printing 2 means landscape.Please help me.(i am using 2.3.3)
You might be hitting this bug "Orientation does not change from landscape to portrait on Emulator on 2.3"
More than 45 people are facing the same issue with the androidd 2.3 emulator
http://code.google.com/p/android/issues/detail?id=13189
Host OS: Windows 7 SDK tools version : revision 8 Eclipse version: 3.5
ADT plug-in version: 8.0.1 Platform targeted by your project: 2.3
Version of the platform running in the emulator:2.3
STEPS TO REPRODUCE:
1. Activity 1 (no screen orientation) - Activity 2 (screen orientation = landscape)
Going from Activity 1 to 2 works fine. Pressing back changes the orientation of Activity 1 to landscape
EXPECTED RESULTS: Activity 1 should be in portrait mode
OBSERVED RESULTS: Behavior is observed only in gingerbread, works as
expected on froyo.
The issue is with the android:configChanges="orientation|keyboardHidden" .
if you remove |keyboardHidden from the androidmanifest.xml, then the onConfigurationChanged is only fired when you rotate from landscape to portrait, not when you go from portrait to landscape (at least in the default emulator).
Hope this helps.
EDIT: DID some sample program to test it and works fine for me.
CheckOrientationActivity.java
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
public class CheckOrientationActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_layout);
Log.i("DayElevenActivity", "onCreate Start");
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
Log.i("DayElevenActivity", "onConfigurationChanged");
// Checks the orientation of the screen
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Log.i("ORIENTATION_LANDSCAPE", "ORIENTATION_LANDSCAPE");
Toast.makeText(getBaseContext(), "ORIENTATION_LANDSCAPE", Toast.LENGTH_SHORT).show();
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
Log.i("ORIENTATION_PORTRAIT", "ORIENTATION_PORTRAIT");
Toast.makeText(getBaseContext(), "ORIENTATION_PORTRAIT", Toast.LENGTH_SHORT).show();
}
}
}
In AndroidManifest.xml
<activity
android:label="#string/app_name"
android:configChanges="**orientation|keyboardHidden**"
android:name=".CheckOrientationActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Corresponding Logs when i run and change the orientation
03-05 18:54:31.644: I/CheckOrientationActivity (20314): onCreate Start
03-05 18:54:35.014: I/CheckOrientationActivity (20314): onConfigurationChanged
03-05 18:54:35.014: I/ORIENTATION_LANDSCAPE(20314): ORIENTATION_LANDSCAPE
03-05 18:54:41.984: I/CheckOrientationActivity (20314): onConfigurationChanged
03-05 18:54:41.984: I/ORIENTATION_PORTRAIT(20314): ORIENTATION_PORTRAIT
There's multiple reasons why this could happen, hard to tell without seing more code.
Here's some pointers:
you haven't forced the layout to some particular orientation via manifest file or programatically (something like <activity android:screenOrientation="portrait"> in your manifest)
by default the Activity is restarted when configuration changes happend. If you want to NOT have your activity restarted when the orientation changes, you need to use
android:configChanges="orientation"
on your activity's configuration in the manifest.
the above point will in fact make Android call your activity's onConfigurationChanged(Configuration) method when the orientation changes
==update==
Also, if you have the same layout (like "main") declared in layout-land and layout-port you only need to specify that you want to use that layout in the beginning:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
and that's it. THERE IS NO NEED to also implement the
public void onConfigurationChanged(Configuration newConfig) {
//...
}
method as well. For the sake of chosing the correct layout based on orientation all you have to do is declare the same layout in those two folders.
(Also, there is NO NEED to add the android:configChanges="orientation" to your manifest, apparently it's on by default). I've tried all this just now, works ok