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POTimer not shutting down when back button is pressed. Forceclose error on button press
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copied!<p>OK all you super java/android guru's. I know your going to look at this and laugh, but I really need the help. Am a super newbie and have read every Google development doc (and many more) and just can't grasp the concept. Can learn a LOT more by seeing working code rather than a referral to something I already read and obviously didn't understand, so if someone can help me out, that would be wonderful.</p> <p><strong>Main Activity</strong></p> <pre><code> import java.util.Timer; import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.TimeUnit; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.webkit.WebView; public class Quotes extends Activity implements OnClickListener { ProgressDialog dialog; private WebView webview; private Timer timer; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); WebView adsview = (WebView) findViewById(R.id.ads); adsview.getSettings().setJavaScriptEnabled(true); adsview.loadUrl("http://www.dgdevelco.com/quotes/androidad.html"); SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(getBaseContext()); String q = SP.getString("appViewType","http://www.dgdevelco.com/quotes/quotesandroidtxt.html"); String c = SP.getString("appRefreshRate","20"); webview = (WebView) findViewById(R.id.scroll); webview.getSettings().setJavaScriptEnabled(true); webview.setWebViewClient(new QuotesWebView(this)); webview.loadUrl(q); ScheduledExecutorService timer = Executors.newSingleThreadScheduledExecutor(); timer.scheduleAtFixedRate(new Runnable() { @Override public void run() { webview.reload(); } }, 10, Long.parseLong(c),TimeUnit.SECONDS); findViewById(R.id.refresh).setOnClickListener(this); } @Override public void onPause(){ timer.cancel(); super.onPause(); } @Override public void onResume(){ webview.reload(); super.onResume(); } public void onClick(View v){ switch(v.getId()){ case R.id.refresh: webview.reload(); break; } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu, menu); MenuItem about = menu.getItem(0); about.setIntent(new Intent(this, About.class)); MenuItem preferences = menu.getItem(1); preferences.setIntent(new Intent(this, Preferences.class)); return true; } } </code></pre> <p><strong>CatLog</strong></p> <pre><code> 07-05 17:28:51.001: DEBUG/AndroidRuntime(11446): Shutting down VM 07-05 17:28:51.001: WARN/dalvikvm(11446): threadid=1: thread exiting with uncaught exception (group=0x40018560) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): FATAL EXCEPTION: main 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): java.lang.RuntimeException: Unable to pause activity {com.dge.quotes/com.dge.quotes.Quotes}: java.lang.NullPointerException 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2477) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2424) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2404) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread.access$1700(ActivityThread.java:124) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:979) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.os.Handler.dispatchMessage(Handler.java:99) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.os.Looper.loop(Looper.java:123) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread.main(ActivityThread.java:3806) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at java.lang.reflect.Method.invokeNative(Native Method) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at java.lang.reflect.Method.invoke(Method.java:507) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at dalvik.system.NativeStart.main(Native Method) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): Caused by: java.lang.NullPointerException 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at com.dge.quotes.Quotes.onPause(Quotes.java:72) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.Activity.performPause(Activity.java:3901) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1191) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:2459) 07-05 17:28:51.017: ERROR/AndroidRuntime(11446): ... 12 more 07-05 17:28:51.509: WARN/ActivityManager(1319): Activity pause timeout for HistoryRecord{40ba7e20 com.dge.quotes/.Quotes} </code></pre> <p>Any and all help would be greatly appreciated.</p> <p>At this point I feel like a completely crazed woman who really needs to get this project done so my life can move forward. If anyone (ANYONE) has an answer to this, I would REALLY Appreciate it.</p>

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