I have two activities. My AndroidManifest.xml file is like this ...
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android";
package="com.example.myfirstapp"
android:versionCode="1"
android:versionName="1.0">
<uses-permission android:name="android.permission.CAMERA"></uses-
permission>
<application android:icon="@drawable/icon" android:label="@string/
app_name">
<activity android:name=".myfirstapp"
android:label="@string/app_name">
</activity>
<activity android:name=".maintemp"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category
android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="4" />
</manifest>
but when i run error occurs and in logcat these details of error are
displayed. Being a newbie its tough to solve it.
I/ActivityManager( 580): Starting activity: Intent
{ act=android.intent.action.MAIN cat=
[android.intent.category.LAUNCHER] flg=0x10200000
cmp=com.example.myfirstapp/.maintemp }
I/ActivityManager( 580): Start proc com.example.myfirstapp for
activity com.example.myfirstapp/.maintemp: pid=868 uid=10029 gids=
{1006}
I/jdwp ( 868): received file descriptor 20 from ADB
D/AndroidRuntime( 868): Shutting down VM
W/dalvikvm( 868): threadid=3: thread exiting with uncaught exception
(group=0x4001aa28)
E/AndroidRuntime( 868): Uncaught handler: thread main exiting due to
uncaught exception
E/AndroidRuntime( 868): java.lang.RuntimeException: Unable to
instantiate activity ComponentInfo{com.example.myfirstapp/
com.example.myfirstapp.maintemp}: java.lang.NullPointerException
E/AndroidRuntime( 868): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2324)
E/AndroidRuntime( 868): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2417)
E/AndroidRuntime( 868): at android.app.ActivityThread.access$2100
(ActivityThread.java:116)
E/AndroidRuntime( 868): at android.app.ActivityThread$H.handleMessage
(ActivityThread.java:1794)
E/AndroidRuntime( 868): at android.os.Handler.dispatchMessage
(Handler.java:99)
E/AndroidRuntime( 868): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 868): at android.app.ActivityThread.main
(ActivityThread.java:4203)
E/AndroidRuntime( 868): at java.lang.reflect.Method.invokeNative
(Native Method)
E/AndroidRuntime( 868): at java.lang.reflect.Method.invoke
(Method.java:521)
E/AndroidRuntime( 868): at com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:791)
E/AndroidRuntime( 868): at com.android.internal.os.ZygoteInit.main
(ZygoteInit.java:549)
E/AndroidRuntime( 868): at dalvik.system.NativeStart.main(Native
Method)
E/AndroidRuntime( 868): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 868): at android.app.Activity.findViewById
(Activity.java:1610)
E/AndroidRuntime( 868): at com.example.myfirstapp.maintemp.<init>
(maintemp.java:31)
E/AndroidRuntime( 868): at java.lang.Class.newInstanceImpl(Native
Method)
E/AndroidRuntime( 868): at java.lang.Class.newInstance(Class.java:
1472)
E/AndroidRuntime( 868): at android.app.Instrumentation.newActivity
(Instrumentation.java:1097)
E/AndroidRuntime( 868): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2316)
Thanks in advance.
regards,
wahib
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