The error is fixed, but now when I go to use the settings its not showing
what I have set. Should I open a thread for this?
On Sunday, July 29, 2012 8:59:23 AM UTC-4, Mark Murphy (a Commons Guy)
wrote:
>
> First, clean your project (Project > Clean from Eclipse main menu, or
> ant clean from the command line). Then rebuild and try again.
> Sometimes, the R values get a bit out of sync with other precompiled
> Java code, and cleaning the project clears that up.
>
> If the error persists, then apparently res/layout/widgetconfig.xml
> does not have a widget named @+id/userNum, which is why dataResults
> would be null.
>
> On Sun, Jul 29, 2012 at 8:50 AM, Cythes <cytheshic...@gmail.com> wrote:
> > I'm working on a piece of code that is a settings activity for an app
> > widget. Right now I have the code set up that if takes the saved value
> of
> > the number and enters it into the text view of another activity via
> shared
> > settings. The issue I am running into is that when press the load button
> it
> > fires an NPE at me on the given line of code which is: Line 48 AKA:
> > dataResults.setText(dataReturned); I will post the whole code for this
> > setting as well as its related logcat below:
> >
> > import android.app.Activity;
> > import android.content.Context;
> > import android.content.SharedPreferences;
> > import android.os.Bundle;
> > import android.view.View;
> > import android.view.View.OnClickListener;
> > import android.widget.Button;
> > import android.widget.EditText;
> > import android.widget.TextView;
> >
> > public class WWSettings extends Activity implements OnClickListener {
> >
> > EditText sharedData;
> > Context c;
> > TextView dataResults;
> > public static String filename = "sharedString";
> > SharedPreferences someData;
> >
> > @Override
> > protected void onCreate(Bundle savedInstanceState) {
> > // TODO Auto-generated method stub
> > super.onCreate(savedInstanceState);
> > setContentView(R.layout.widgetconfig);
> > Button b = (Button) findViewById(R.id.btnwidgetconfig);
> > Button b1 = (Button) findViewById(R.id.loadBtnWidgetConfig);
> > c = WWSettings.this;
> > b.setOnClickListener(this);
> > b1.setOnClickListener(this);
> > sharedData = (EditText)findViewById(R.id.etwidgitconfig);
> > dataResults = (TextView)findViewById(R.id.userNum);
> > someData = getSharedPreferences(filename, 0);
> > }
> >
> > public void onClick(View v) {
> > // TODO Auto-generated method stub
> > switch (v.getId()){
> > case R.id.btnwidgetconfig:
> > String stringData = sharedData.getText().toString();
> > SharedPreferences.Editor editor = someData.edit();
> > editor.putString("sharedString", stringData);
> > editor.commit();
> > break;
> > case R.id.loadBtnWidgetConfig:
> > someData = getSharedPreferences(filename, 0);
> > String dataReturned = someData.getString("sharedString", "Can't
> > Load....Sorry!");
> > dataResults.setText(dataReturned);
> > break;
> > }
> > }
> > }
> >
> > And the logcat:
> >
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): FATAL EXCEPTION: main
> > 07-29 08:42:00.360: E/AndroidRuntime(9249):
> java.lang.NullPointerException
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > lionsimage.com.onClick(Settings.java:48)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > android.view.View.performClick(View.java:2485)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > android.view.View$PerformClick.run(View.java:9080)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > android.os.Handler.handleCallback(Handler.java:587)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > android.os.Handler.dispatchMessage(Handler.java:92)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > android.os.Looper.loop(Looper.java:130)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > android.app.ActivityThread.main(ActivityThread.java:3683)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > java.lang.reflect.Method.invokeNative(Native Method)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > java.lang.reflect.Method.invoke(Method.java:507)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> >
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
>
>
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
> > 07-29 08:42:00.360: E/AndroidRuntime(9249): at
> > dalvik.system.NativeStart.main(Native Method)
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups "Android Developers" group.
> > To post to this group, send email to android-developers@googlegroups.com
> > To unsubscribe from this group, send email to
> > android-developers+unsubscr...@googlegroups.com
> > For more options, visit this group at
> > http://groups.google.com/group/android-developers?hl=en
>
>
>
> --
> Mark Murphy (a Commons Guy)
> http://commonsware.com | http://github.com/commonsguy
> http://commonsware.com/blog | http://twitter.com/commonsguy
>
> _The Busy Coder's Guide to Android Development_ Version 3.8 Available!
>
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
