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
>
> > --
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>
> --
> 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.
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