Databases
StackOverflow2013
Postsdbo
POMultiple Activities in Android
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POMultiple Activities in Android
    text
    copied!<p>I am creating multiple activities in Android. When I run the app, it can't connect to other activities so just wondering. These are my code, I have 3 xml files and 3 java files. </p> <p>This is logcat log file.</p> <p>log.txt</p> <pre><code>05-03 01:57:10.335: E/PhonePolicy(23020): Could not preload class for phone policy: com.android.internal.policy.impl.PhoneWindow$ContextMenuCallback 05-03 01:57:12.665: W/dalvikvm(23020): threadid=1: thread exiting with uncaught exception (group=0x409db1f8) 05-03 01:57:12.705: E/AndroidRuntime(23020): FATAL EXCEPTION: main 05-03 01:57:12.705: E/AndroidRuntime(23020): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.jumoun.itemp/com.jumoun.itemp.Temperature}: java.lang.NullPointerException 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1880) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.ActivityThread.access$600(ActivityThread.java:123) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.os.Handler.dispatchMessage(Handler.java:99) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.os.Looper.loop(Looper.java:137) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.ActivityThread.main(ActivityThread.java:4427) 05-03 01:57:12.705: E/AndroidRuntime(23020): at java.lang.reflect.Method.invokeNative(Native Method) 05-03 01:57:12.705: E/AndroidRuntime(23020): at java.lang.reflect.Method.invoke(Method.java:511) 05-03 01:57:12.705: E/AndroidRuntime(23020): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 05-03 01:57:12.705: E/AndroidRuntime(23020): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 05-03 01:57:12.705: E/AndroidRuntime(23020): at dalvik.system.NativeStart.main(Native Method) 05-03 01:57:12.705: E/AndroidRuntime(23020): Caused by: java.lang.NullPointerException 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.Activity.findViewById(Activity.java:1794) 05-03 01:57:12.705: E/AndroidRuntime(23020): at com.jumoun.itemp.Temperature.&lt;init&gt;(Temperature.java:14) 05-03 01:57:12.705: E/AndroidRuntime(23020): at java.lang.Class.newInstanceImpl(Native Method) 05-03 01:57:12.705: E/AndroidRuntime(23020): at java.lang.Class.newInstance(Class.java:1319) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.Instrumentation.newActivity(Instrumentation.java:1023) 05-03 01:57:12.705: E/AndroidRuntime(23020): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871) 05-03 01:57:12.705: E/AndroidRuntime(23020): ... 11 more 05-03 01:57:14.115: I/Process(23020): Sending signal. PID: 23020 SIG: 9 </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload