Do you have howtoplay_button defined in your layout-port/main.xml and not in your layout-land/main.xml ? (Or in general if you have multiple main.xml files, for different screen sizes or whatever, and forgot to update one of them, this can happen)
-Kevin On Mar 13, 11:40 pm, acr <[email protected]> wrote: > sorry for got to add this.. > > 53: howtoplayButton.setOnClickListener(this); > > this works on 99.9 percent of devices > > here's a larger snippet: > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.main); > > setVolumeControlStream(AudioManager.STREAM_MUSIC); > //Get Screen Width > Panel.screenWidth = > getWindowManager().getDefaultDisplay().getWidth(); > // Set up click listeners for all the buttons > //View continueButton = findViewById(R.id.continue_button); > //continueButton.setOnClickListener(this); > View newButton = findViewById(R.id.new_button); > newButton.setOnClickListener(this); > View aboutButton = findViewById(R.id.about_button); > aboutButton.setOnClickListener(this); > View howtoplayButton = findViewById(R.id.howtoplay_button); > howtoplayButton.setOnClickListener(this); > View exitButton = findViewById(R.id.exit_button); > exitButton.setOnClickListener(this); > View buyButton = findViewById(R.id.buy_full); > buyButton.setOnClickListener(this); > newButton.startAnimation(AnimationUtils.loadAnimation(this, > R.anim.shake)); > ...... > > On Mar 13, 11:30 pm, Dianne Hackborn <[email protected]> wrote: > > > > > > > > > Given this: > > > Caused by: java.lang.NullPointerException at > > com.myco.myappfree.myapp.onCreate(myapp.java:53) > > at > > android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) > > at > > android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) > > > What is on line 53 of your app? > > > On Sun, Mar 13, 2011 at 8:03 PM, acr <[email protected]> wrote: > > > I have a relatively successful app in the android market that a very > > > small amount of users experience force close on start up of the app. > > > > It is not happening on a specific device, im not sure if it's > > > something these users have installed that is interfering with the app. > > > I've tried to troubleshoot with a few users having the problem, but > > > cannot get to the bottom of it. > > > > it happens on both rooted and non-rooted phones > > > > I keep getting a NullPointerException for a small number of users who > > > use a variety of phones that normally work. > > > anyone know what may be causing this, or how to get around this? I > > > can't figure this one out and cannot replicate the problem, please > > > help. > > > > below are the stack traces from the market (package name changed to > > > not spam the board) > > > > java.lang.RuntimeException: Unable to start activity > > > ComponentInfo{com.myco.myappfree/com.myco.myappfree.myapp}: > > > java.lang.NullPointerException > > > at > > > android.app.ActivityThread.performLaunchActivity(ActivityThread.java: > > > 2663) > > > at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: > > > 2679) > > > at android.app.ActivityThread.access$2300(ActivityThread.java:125) > > > at android.app.ActivityThread$H.handleMessage(ActivityThread.java: > > > 2033) > > > at android.os.Handler.dispatchMessage(Handler.java:99) > > > at android.os.Looper.loop(Looper.java:123) > > > at android.app.ActivityThread.main(ActivityThread.java:4627) > > > at java.lang.reflect.Method.invokeNative(Native Method) > > > at java.lang.reflect.Method.invoke(Method.java:521) > > > at com.android.internal.os.ZygoteInit > > > $MethodAndArgsCaller.run(ZygoteInit.java:858) > > > at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) > > > at dalvik.system.NativeStart.main(Native Method) > > > Caused by: java.lang.NullPointerException > > > at com.myco.myappfree.myapp.onCreate(myapp.java:53) > > > at > > > android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: > > > 1047) > > > at > > > android.app.ActivityThread.performLaunchActivity(ActivityThread.java: > > > 2627) > > > ... 11 more > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to [email protected] > > > To unsubscribe from this group, send email to > > > [email protected] > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en > > > -- > > Dianne Hackborn > > Android framework engineer > > [email protected] > > > Note: please don't send private questions to me, as I don't have time to > > provide private support, and so won't reply to such e-mails. All such > > questions should be posted on public forums, where I and others can see and > > answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
