I'd just like to point out that you are probably going down the wrong road
based on bad upfront advice from the person who provided that first link to
you.
His second piece of advice - i.e.
"....you can save the state of your RadioButton in onSaveInstanceState() and
re-apply
it in either onCreate() or onRestoreInstanceState()."
is the way you should be approaching this problem.
The reason Android destroys and re-creates your activity during an
orientation switch is so it can load in the appropriate resources based on
the orientation. i.e. landscape or portrait drawables and layouts.
By ignoring the orientation change you lose this functionality.
Also,
You will have better results if you hide & show views rather than actually
removing them from the view heirarchy.
SEE:
view.setVisibility(View.GONE) and view.setVisibility(View.VISIBLE)
On Tue, Mar 9, 2010 at 8:05 AM, ThemePark <theoriginalthemep...@gmail.com>wrote:
> Thanks, that little change to the manifest did exactly what I wanted.
> As for the error, I don't know why but now it's a RemoteException, and
> it happens the second time I push a button and try to add a view. That
> is, if I start out with the 2D view, I can change to 3D but then I try
> changing back to 2D and it crashes when trying to add the 2D view even
> though I remove it when I press the 3D button. Could it be that
> removeView doesn't actually remove the view at all, but just hides it?
> Either way, what I want is to only have one view attached to my main
> view with the radio buttons, at all times.
>
> Here is the logcat output:
> 03-09 16:57:30.061 D/AndroidRuntime( 958):
> 03-09 16:57:30.061 D/AndroidRuntime( 958): >>>>>>>>>>>>>>
> AndroidRuntime START
> <<<<<<<<<<<<<<
> 03-09 16:57:30.088 D/AndroidRuntime( 958): CheckJNI is ON
> 03-09 16:57:30.638 D/AndroidRuntime( 958): --- registering native
> functions ---
>
> 03-09 16:57:32.418 D/PackageParser( 564): Scanning package: /data/app/
> vmdl35068
> .tmp
> 03-09 16:57:32.657 I/jdwp ( 958): received file descriptor 27 from
> ADB
> 03-09 16:57:32.710 I/PackageManager( 564): /data/app/vmdl35068.tmp
> changed; unp
> acking
> 03-09 16:57:32.737 D/installd( 543): DexInv: --- BEGIN '/data/app/
> vmdl35068.tmp
> ' ---
> 03-09 16:57:33.288 D/dalvikvm( 965): DexOpt: load 124ms, verify 49ms,
> opt 2ms
> 03-09 16:57:33.338 D/installd( 543): DexInv: --- END '/data/app/
> vmdl35068.tmp'
> (success) ---
> 03-09 16:57:33.537 I/installd( 543): move /data/dalvik-cache/
> d...@app@vmdl35068
> ....@classes.dex -> /data/dalvik-cache/
> d...@app@com.test....@classes.dex
> 03-09 16:57:33.577 D/PackageManager( 564): New package installed in /
> data/app/c
> om.test.apk
> 03-09 16:57:33.877 D/AndroidRuntime( 958): Shutting down VM
> 03-09 16:57:33.887 D/dalvikvm( 958): DestroyJavaVM waiting for non-
> daemon threa
> ds to exit
> 03-09 16:57:33.928 D/dalvikvm( 958): DestroyJavaVM shutting VM down
> 03-09 16:57:33.937 D/dalvikvm( 958): HeapWorker thread shutting down
> 03-09 16:57:33.937 D/dalvikvm( 958): HeapWorker thread has shut down
> 03-09 16:57:33.937 D/jdwp ( 958): JDWP shutting down net...
> 03-09 16:57:33.937 D/jdwp ( 958): +++ peer disconnected
> 03-09 16:57:33.937 I/dalvikvm( 958): Debugger has detached; object
> registry had
> 1 entries
> 03-09 16:57:33.957 D/dalvikvm( 958): VM cleaning up
> 03-09 16:57:34.058 D/dalvikvm( 958): LinearAlloc 0x0 used 629572 of
> 4194304 (15
> %)
> 03-09 16:57:34.558 D/dalvikvm( 564): GC freed 5649 objects / 328304
> bytes in 39
> 9ms
> 03-09 16:57:34.588 D/HomeLoaders( 608): application intent received:
> android.in
> tent.action.PACKAGE_ADDED, replacing=false
> 03-09 16:57:34.588 D/HomeLoaders( 608): --> package:com.test
> 03-09 16:57:34.588 D/HomeLoaders( 608): --> add package
> 03-09 16:57:34.748 W/ResourceType( 564): No package identifier when
> getting val
> ue for resource number 0x7f060000
> 03-09 16:57:34.777 W/ResourceType( 564): No package identifier when
> getting val
> ue for resource number 0x7f060001
> 03-09 16:57:35.977 D/AndroidRuntime( 970):
> 03-09 16:57:35.977 D/AndroidRuntime( 970): >>>>>>>>>>>>>>
> AndroidRuntime START
> <<<<<<<<<<<<<<
> 03-09 16:57:35.987 D/AndroidRuntime( 970): CheckJNI is ON
> 03-09 16:57:36.710 D/AndroidRuntime( 970): --- registering native
> functions ---
>
> 03-09 16:57:38.398 I/ActivityManager( 564): Starting activity: Intent
> { flags=0
> x10000000 comp={com.test/com.test.App} }
> 03-09 16:57:38.568 D/AndroidRuntime( 970): Shutting down VM
> 03-09 16:57:38.579 D/dalvikvm( 970): DestroyJavaVM waiting for non-
> daemon threa
> ds to exit
> 03-09 16:57:38.607 D/dalvikvm( 970): DestroyJavaVM shutting VM down
> 03-09 16:57:38.607 D/dalvikvm( 970): HeapWorker thread shutting down
> 03-09 16:57:38.617 D/dalvikvm( 970): HeapWorker thread has shut down
> 03-09 16:57:38.627 D/jdwp ( 970): JDWP shutting down net...
> 03-09 16:57:38.667 D/dalvikvm( 970): VM cleaning up
> 03-09 16:57:38.739 I/ActivityManager( 564): Start proc com.test for
> activity co
> m.test/.App: pid=977 uid=10020 gids={}
> 03-09 16:57:38.918 D/dalvikvm( 970): LinearAlloc 0x0 used 637060 of
> 4194304 (15
> %)
> 03-09 16:57:40.207 I/ActivityManager( 564): Displayed activity
> com.test/.App: 1
> 785 ms
> 03-09 16:57:40.417 I/jdwp ( 977): received file descriptor 30 from
> ADB
> 03-09 16:57:40.598 W/System.err( 977): Can't dispatch DDM chunk
> 46454154: no ha
> ndler defined
> 03-09 16:57:40.598 W/System.err( 977): Can't dispatch DDM chunk
> 4d505251: no ha
> ndler defined
> 03-09 16:57:43.149 D/AndroidRuntime( 977): Shutting down VM
> 03-09 16:57:43.161 W/dalvikvm( 977): threadid=3: thread exiting with
> uncaught e
> xception (group=0x4000fe70)
> 03-09 16:57:43.170 E/AndroidRuntime( 977): Uncaught handler: thread
> main exitin
> g due to uncaught exception
> 03-09 16:57:43.217 E/AndroidRuntime( 977):
> java.lang.IllegalStateException: The
> specified child already has a parent. You must call removeView() on
> the child's
> parent first.
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.addVie
> wInner(ViewGroup.java:1816)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.addVie
> w(ViewGroup.java:1711)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.addVie
> w(ViewGroup.java:1668)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.addVie
> w(ViewGroup.java:1648)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at com.test.App
> $1.onCheckedChang
> ed(App.java:31)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.RadioGroup.set
> CheckedId(RadioGroup.java:172)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.RadioGroup.acc
> ess$600(RadioGroup.java:52)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.RadioGroup$Che
> ckedStateTracker.onCheckedChanged(RadioGroup.java:342)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.CompoundButton
> .setChecked(CompoundButton.java:125)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.CompoundButton
> .toggle(CompoundButton.java:85)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.RadioButton.to
> ggle(RadioButton.java:69)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.CompoundButton
> .performClick(CompoundButton.java:97)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.View.onTouchEven
> t(View.java:3828)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.widget.TextView.onTou
> chEvent(TextView.java:6291)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.View.dispatchTou
> chEvent(View.java:3368)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.dispat
> chTouchEvent(ViewGroup.java:863)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.dispat
> chTouchEvent(ViewGroup.java:863)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.dispat
> chTouchEvent(ViewGroup.java:863)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.dispat
> chTouchEvent(ViewGroup.java:863)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewGroup.dispat
> chTouchEvent(ViewGroup.java:863)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> com.android.internal.policy.i
> mpl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:
> 1707)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> com.android.internal.policy.i
> mpl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1197)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.app.Activity.dispatch
> TouchEvent(Activity.java:1993)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> com.android.internal.policy.i
> mpl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1691)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.view.ViewRoot.handleM
> essage(ViewRoot.java:1525)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.os.Handler.dispatchMe
> ssage(Handler.java:99)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.os.Looper.loop(Looper
> .java:123)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> android.app.ActivityThread.ma
> in(ActivityThread.java:3948)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> java.lang.reflect.Method.invo
> keNative(Native Method)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> java.lang.reflect.Method.invo
> ke(Method.java:521)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> com.android.internal.os.Zygot
> eInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> com.android.internal.os.Zygot
> eInit.main(ZygoteInit.java:540)
> 03-09 16:57:43.217 E/AndroidRuntime( 977): at
> dalvik.system.NativeStart.mai
> n(Native Method)
> 03-09 16:57:43.278 I/Process ( 564): Sending signal. PID: 977 SIG: 3
> 03-09 16:57:43.278 I/dalvikvm( 977): threadid=7: reacting to signal 3
> 03-09 16:57:43.377 I/dalvikvm( 977): Wrote stack trace to '/data/anr/
> traces.txt
> '
> 03-09 16:57:44.808 I/Process ( 977): Sending signal. PID: 977 SIG: 9
> 03-09 16:57:44.847 I/ActivityManager( 564): Process com.test (pid
> 977) has died
> .
> 03-09 16:57:44.897 I/WindowManager( 564): WIN DEATH: Window{436e1840
> com.test/c
> om.test.App paused=false}
> 03-09 16:57:45.247 W/InputManagerService( 564): Got RemoteException
> sending set
> Active(false) notification to pid 977 uid 10020
>
> And the entire Java class is here:
> package com.test;
>
> import com.test.R;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.widget.RadioGroup;
> import android.widget.RelativeLayout;
>
> public class App extends Activity {
> RelativeLayout main;
> _2DView _2D;
> _3DView _3D;
>
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
>
> if (savedInstanceState == null) {
> _2D = new _2DView(this);
> _3D = new _3DView(this);
> main = (RelativeLayout) findViewById(R.id.window);
> main.addView(_2D);
> RadioGroup.OnCheckedChangeListener buttonListener =
> new
> RadioGroup.OnCheckedChangeListener() {
> @Override
> public void onCheckedChanged(RadioGroup
> group, int checkedId) {
> if (checkedId == R.id._2D) {
>
> main.removeView(findViewById(R.id._3D));
> main.addView(_2D);
> }
> else if (checkedId == R.id._3D) {
>
> main.removeView(findViewById(R.id._2D));
> main.addView(_3D);
> }
> }
> };
> RadioGroup dimensions = (RadioGroup)
> findViewById(R.id.dimensions);
>
> dimensions.setOnCheckedChangeListener(buttonListener);
> }
> }
> }
>
> I couldn't find the /data/anr/traces.txt file anywhere though so I
> haven't included that. I see the problem in the logcat output though,
> the exception being that the child already has a parent, but since I
> do call removeView on main BEFORE adding another view, I don't see how
> this could be happening.
>
> --
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--
"An engineer's definition of done is the perfect set of code, and left to
his own devices, an engineer will endlessly improve the code on the mythic
journey to done."
-- http://www.randsinrepose.com
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