I'm trying to implement the Facebook implementation as mentioned in the following link -
https://developers.facebook.com/docs/mobile/android/build/
However, after I've implemented upto step 6.3 and try to run my application, I'm being shown the following error message in the log -
03-01 14:19:50.124: W/dalvikvm(329): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
03-01 14:19:50.135: E/AndroidRuntime(329): Uncaught handler: thread main exiting due to uncaught exception
03-01 14:19:50.173: E/AndroidRuntime(329): java.lang.NoClassDefFoundError: com.facebook.android.Facebook
03-01 14:19:50.173: E/AndroidRuntime(329): at com.test.fbandroid.MyGreatAppActivity.<init>(MyGreatAppActivity.java:14)
03-01 14:19:50.173: E/AndroidRuntime(329): at java.lang.Class.newInstanceImpl(Native Method)
03-01 14:19:50.173: E/AndroidRuntime(329): at java.lang.Class.newInstance(Class.java:1479)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.os.Handler.dispatchMessage(Handler.java:99)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.os.Looper.loop(Looper.java:123)
03-01 14:19:50.173: E/AndroidRuntime(329): at android.app.ActivityThread.main(ActivityThread.java:4363)
03-01 14:19:50.173: E/AndroidRuntime(329): at java.lang.reflect.Method.invokeNative(Native Method)
03-01 14:19:50.173: E/AndroidRuntime(329): at java.lang.reflect.Method.invoke(Method.java:521)
03-01 14:19:50.173: E/AndroidRuntime(329): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
03-01 14:19:50.173: E/AndroidRuntime(329): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
03-01 14:19:50.173: E/AndroidRuntime(329): at dalvik.system.NativeStart.main(Native Method)
I'm using Android 2.1 with version 7 as the mini SDK.
Any pointers on this would be of great help.
Thanks in advance,
Amitava
it's quite easy ....
Download the code for facebook SDK and add as a library in your project and then run it.
Add two variables as
String appId="000000000000000"; //your appp ID
Facebook facebook;
and initialise the facebook variable
facebook = new Facebook(appId);
Related
I am new in Google Map and so many things aren't clear enough to me for that reason.So i expect some expert's direction on this regard.I read This Guide and did everything what it says.I use google map api v2 and get a map key.Then i make a sample project following that link and select target version android 2.2(while running the project).But a list of error occurs after running then example in eclipse android emulator.My logcat view shows:
01-31 00:51:59.226: W/dalvikvm(329): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
01-31 00:51:59.236: E/AndroidRuntime(329): FATAL EXCEPTION: main
01-31 00:51:59.236: E/AndroidRuntime(329): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.googleMapApp/com.googleMapApp.LocationProfileManagerActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.os.Handler.dispatchMessage(Handler.java:99)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.os.Looper.loop(Looper.java:123)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.ActivityThread.main(ActivityThread.java:4627)
01-31 00:51:59.236: E/AndroidRuntime(329): at java.lang.reflect.Method.invokeNative(Native Method)
01-31 00:51:59.236: E/AndroidRuntime(329): at java.lang.reflect.Method.invoke(Method.java:521)
01-31 00:51:59.236: E/AndroidRuntime(329): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
01-31 00:51:59.236: E/AndroidRuntime(329): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
01-31 00:51:59.236: E/AndroidRuntime(329): at dalvik.system.NativeStart.main(Native Method)
01-31 00:51:59.236: E/AndroidRuntime(329): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:576)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
01-31 00:51:59.236: E/AndroidRuntime(329): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.Activity.setContentView(Activity.java:1647)
01-31 00:51:59.236: E/AndroidRuntime(329): at com.googleMapApp.LocationProfileManagerActivity.onCreate(LocationProfileManagerActivity.java:14)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
01-31 00:51:59.236: E/AndroidRuntime(329): ... 11 more
01-31 00:51:59.236: E/AndroidRuntime(329): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/com.googleMapApp-1.apk]
01-31 00:51:59.236: E/AndroidRuntime(329): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
01-31 00:51:59.236: E/AndroidRuntime(329): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
01-31 00:51:59.236: E/AndroidRuntime(329): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.createView(LayoutInflater.java:466)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:544)
01-31 00:51:59.236: E/AndroidRuntime(329): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
01-31 00:51:59.236: E/AndroidRuntime(329): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
My Manifest.xml is:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.googleMapApp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<permission
android:name="com.googleMapApp.permission.MAPS_RECEIVE"
android:protectionLevel="signature"/>
<uses-permission android:name="com.googleMapApp.permission.MAPS_RECEIVE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<!-- Require OpenGL ES version 2 -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".LocationProfileManagerActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="myMapKey"/>
</application>
</manifest>
My main.xml is:
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment"/>
My activity.java is:
package com.googleMapApp;
import android.app.Activity;
import android.os.Bundle;
public class LocationProfileManagerActivity extends Activity {
/** Called when the activity is first created. */
//private GoogleMap map;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}
}
Sorry for this lengthy description,but i want to show you exactly what i did.I think as a newcomer i did a lot of mistake on this way.so i expect someone will guide me that.
You are using features only available in later APIs, namely Fragment. If you want to compile to support 2.2, you need to include the Support Library in your project. You will also have to make the following changes to use support fragments instead of regular fragments --
In main.xml, change
class="com.google.android.gms.maps.MapFragment"/>
to
class="com.google.android.gms.maps.SupportMapFragment"/>
and in your activity.java, change
public class LocationProfileManagerActivity extends Activity {
to
public class LocationProfileManagerActivity extends FragmentActivity {
you need to make two changes
Since as you are sdk version is below 12, need to make following change
1)
main.xml
Replace
class="com.google.android.gms.maps.MapFragment"/>
with
class="com.google.android.gms.maps.SupportMapFragment"/>
2) activity.java
Need to extend FragmentActivity instead of Activity
If you want to test in emulator , then download the google_play_services_apk and install it in emulator.
Maps API v2 cannot be run in an emulator because of its dependency on Google Play Services, which is bundled in the Google Play Store .apk. It can be hacked together though, you can read about it here on the first Google result for "Google maps v2 emulator". Also you can still use V1 for a limited time, you can get started here.
i'm getting this message when i run my application i don't know why i'm getting it could any one help me. here is the logcat.
java.lang.VerifyError: com.kosh.me.Smaller
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1429)
at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
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:876)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634)
at dalvik.system.NativeStart.main(Native Method)
This happens when the build library classes conflict with those at run-time. Try performing a Clean of your project followed by a build.
I use actionbarcompat to have an actionbar also on pre honeycomp devices.
As there is no space between the home icon and the title of the actionbar, I added this to my activites:
// add padding to the right of home item
ImageView view = (ImageView)findViewById(android.R.id.home);
view.setPadding(0, 0, 10, 0);
Actually the second line (setPadding) is causing the crash.
It is working fine on Jelly Bean devices. But I get a Null Pointer exception running this on e.g. Android 2.3 device.
This is the logcat output of the crash:
12-29 11:44:36.968: E/AndroidRuntime(329): FATAL EXCEPTION: main
12-29 11:44:36.968: E/AndroidRuntime(329): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.GetRichOrDieSmoking/com.GetRichOrDieSmoking.MainScreen}: java.lang.NullPointerException
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.os.Handler.dispatchMessage(Handler.java:99)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.os.Looper.loop(Looper.java:123)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-29 11:44:36.968: E/AndroidRuntime(329): at java.lang.reflect.Method.invokeNative(Native Method)
12-29 11:44:36.968: E/AndroidRuntime(329): at java.lang.reflect.Method.invoke(Method.java:507)
12-29 11:44:36.968: E/AndroidRuntime(329): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-29 11:44:36.968: E/AndroidRuntime(329): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-29 11:44:36.968: E/AndroidRuntime(329): at dalvik.system.NativeStart.main(Native Method)
12-29 11:44:36.968: E/AndroidRuntime(329): Caused by: java.lang.NullPointerException
12-29 11:44:36.968: E/AndroidRuntime(329): at com.GetRichOrDieSmoking.MainScreen.onCreate(MainScreen.java:463)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-29 11:44:36.968: E/AndroidRuntime(329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-29 11:44:36.968: E/AndroidRuntime(329): ... 11 more
android.R.id.home was introduced only in API level 11. So the view could not be created in Android 2.3. Hence in the following line when you try to set padding on the null view you get NullPointerException.
you can't access the home view probably because of the API level .
use a third party library for the action bar in order to support low API levels.
i strongly suggest using the actionBarSherlock .
I am trying to write my first Android app, and I'm having trouble. I wrote a simple Java program to find the factors of a number provided by the user, and I'd like to port it over to Java. I have an XML file for the interface, which seemed to run OK until I added the first Java class. Now it won't run, and log.cat says that there's a null pointer exception. So far, I only have stubs, but it seems like it should run OK with what I've done to this point. I'm including the log.cat text, but I'm too new it this to make much sense out of it.
There may be more than one problem. After adding the Java file I began to get run-time errors right away, but I don't think they were null pointer exceptions. I think that started when I made changes to fix what was already causing problems.
Any help is appreciated.
Here is the Java file:
import android.app.Activity; <br>
import android.os.Bundle; <br>
import android.widget.Button; <br>
import android.widget.EditText; <br>
import android.widget.TextView; <br>
public class AndroidFactoringActivity extends Activity {
// Instance Variables
EditText userNumber;
Button factorButton;
TextView resultsField;
int factorResults;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
factorButton = (Button) findViewById(R.id.factorButton);
userNumber = (EditText) findViewById(R.id.userNumber);
factorResults = 1;
resultsField.setText(String.valueOf(factorResults));
}
}
Here is main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/askField"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/ask"
android:textSize="24dp" />
<EditText
android:id="#+id/userNumber"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="number" >
<requestFocus />
</EditText>
<Button
android:id="#+id/factorButton"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/click" />
<TextView
android:id="#+id/resultsField"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/tell"
android:textSize="24dp" />
</LinearLayout>
Here are the log.cat results:
03-31 23:58:53.579: D/AndroidRuntime(2804): Shutting down VM
03-31 23:58:53.589: W/dalvikvm(2804): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
03-31 23:58:53.589: E/AndroidRuntime(2804): Uncaught handler: thread main exiting due to uncaught exception
03-31 23:58:53.650: E/AndroidRuntime(2804): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.dave_b.factoring/net.dave_b.factoring.AndroidFactoringActivity}: java.lang.NullPointerException
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.os.Handler.dispatchMessage(Handler.java:99)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.os.Looper.loop(Looper.java:123)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.ActivityThread.main(ActivityThread.java:4363)
03-31 23:58:53.650: E/AndroidRuntime(2804): at java.lang.reflect.Method.invokeNative(Native Method)
03-31 23:58:53.650: E/AndroidRuntime(2804): at java.lang.reflect.Method.invoke(Method.java:521)
03-31 23:58:53.650: E/AndroidRuntime(2804): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
03-31 23:58:53.650: E/AndroidRuntime(2804): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
03-31 23:58:53.650: E/AndroidRuntime(2804): at dalvik.system.NativeStart.main(Native Method)
03-31 23:58:53.650: E/AndroidRuntime(2804): Caused by: java.lang.NullPointerException
03-31 23:58:53.650: E/AndroidRuntime(2804): at net.dave_b.factoring.AndroidFactoringActivity.onCreate(AndroidFactoringActivity.java:26)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-31 23:58:53.650: E/AndroidRuntime(2804): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
03-31 23:58:53.650: E/AndroidRuntime(2804): ... 11 more
03-31 23:58:53.679: I/dalvikvm(2804): threadid=7: reacting to signal 3
03-31 23:58:53.679: E/dalvikvm(2804): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
03-31 23:59:57.629: I/Process(2804): Sending signal. PID: 2804 SIG: 9
04-01 00:07:36.129: D/AndroidRuntime(3040): Shutting down VM
04-01 00:07:36.129: W/dalvikvm(3040): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
04-01 00:07:36.139: E/AndroidRuntime(3040): Uncaught handler: thread main exiting due to uncaught exception
04-01 00:07:36.159: E/AndroidRuntime(3040): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.dave_b.factoring/net.dave_b.factoring.AndroidFactoringActivity}: java.lang.NullPointerException
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.os.Handler.dispatchMessage(Handler.java:99)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.os.Looper.loop(Looper.java:123)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.ActivityThread.main(ActivityThread.java:4363)
04-01 00:07:36.159: E/AndroidRuntime(3040): at java.lang.reflect.Method.invokeNative(Native Method)
04-01 00:07:36.159: E/AndroidRuntime(3040): at java.lang.reflect.Method.invoke(Method.java:521)
04-01 00:07:36.159: E/AndroidRuntime(3040): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
04-01 00:07:36.159: E/AndroidRuntime(3040): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
04-01 00:07:36.159: E/AndroidRuntime(3040): at dalvik.system.NativeStart.main(Native Method)
04-01 00:07:36.159: E/AndroidRuntime(3040): Caused by: java.lang.NullPointerException
04-01 00:07:36.159: E/AndroidRuntime(3040): at net.dave_b.factoring.AndroidFactoringActivity.onCreate(AndroidFactoringActivity.java:26)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-01 00:07:36.159: E/AndroidRuntime(3040): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
04-01 00:07:36.159: E/AndroidRuntime(3040): ... 11 more
04-01 00:07:36.199: I/dalvikvm(3040): threadid=7: reacting to signal 3
04-01 00:07:36.199: E/dalvikvm(3040): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
04-01 00:07:40.329: I/Process(3040): Sending signal. PID: 3040 SIG: 9
resultsField.setText(String.valueOf(factorResults));
resultsField is null and you are trying to set value on null.
resultsField= (TextView ) findViewById(R.id.userNumber);
Get textview instance before setting value, otherwise resultsField will be null and all operations on null reference results in NullPointerException.
You got a null pointer because you didnt intialise the variable resultsField (you just declared it) .
As you used
userNumber = (EditText) findViewById(R.id.userNumber);
you must even initialise the reference resultsField.
This can be done using
resultsField= (TextView ) findViewById(R.id.resultsField);
in the onCreate() after the statement setContentView()
You need to initialize the userNumer and resultsFiled as follows
userNumber = (EditText) findViewById(R.id.userNumber);
resultsField= (TextView ) findViewById(R.id.resultsField);
Two days ago, when my android project in eclipse still worked, I added "android SDK 4.0.3" to my SDKs (in addition to android SDK 2.1).
From that moment on, I have a trouble with slf4j-android library; here's the exception:
Uncaught handler: thread main exiting due to uncaught exception
java.lang.ExceptionInInitializerError
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1479)
at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
at android.app.ActivityThread.access$2200(ActivityThread.java:119)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4363)
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:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
at it.cefriel.swa.urbanopoly.client.game.UrbanopolyActivity.<clinit>(UrbanopolyActivity.java:11)
The JAR I use is slf4j-android-1.5.8.jar. The build path seems correctly setted. I also tried to create another project using slf4j and I got the same error..
Any Ideas?
Thanks in advance
Try adding the slf4j-api-1.5.8.jar or latest version as well with the current slf4j-android-1.5.8.jar