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POTo pass the string from 1 screen to other in android
 

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  1. POTo pass the string from 1 screen to other in android
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    <p>In my application I have to pass 5 edit text values from 1 screen to other.I put that in <code>putextra</code> and <code>getextra</code>,But I am getting <code>null pointer exception</code>.I don't know what I did wrong.Help me.</p> <p>Here is my code:</p> <p>Passing screen:</p> <pre><code>long id=0; db.open(); // id=db.insertSpinTitle(group1.getText().toString(), group2.getText().toString(), group3.getText().toString(), group4.getText().toString(), group5.getText().toString()); Intent spin=new Intent(getApplicationContext(),DBadapter.class); spin.putExtra("grp1val", group1.getText().toString()); spin.putExtra("grp2val", group2.getText().toString()); spin.putExtra("grp3val", group3.getText().toString()); spin.putExtra("grp4val", group4.getText().toString()); spin.putExtra("grp5val", group5.getText().toString()); // setResult(1,spin); db.updateSpinTitle(); startActivity(spin); finish(); </code></pre> <p>Getting screen:</p> <pre><code>public long updateSpinTitle() { System.out.println("Inside update"); ContentValues initialValues = new ContentValues(); for(int i=1;i&lt;=6;i++) { System.out.println("inside for"); Intent intent=getIntent(); System.out.println("subbu="); if(i==1) initialValues.put(KEY_SPIN, intent.getStringExtra("grp1val")); if(i==2) initialValues.put(KEY_SPIN, intent.getStringExtra("grp2val")); if(i==3) initialValues.put(KEY_SPIN, intent.getStringExtra("grp3val")); if(i==4) initialValues.put(KEY_SPIN, intent.getStringExtra("grp4val")); if(i==5) initialValues.put(KEY_SPIN, intent.getStringExtra("grp5val")); if(i==6) initialValues.put(KEY_SPIN, "Edit"); db.update(DATABASE_TABLESPIN, initialValues, KEY_ROWID + "=" + i, null); } return 0 ; } </code></pre> <p>This is my logcat:</p> <pre><code>07-18 09:55:02.324: D/AndroidRuntime(435): Shutting down VM 07-18 09:55:02.324: W/dalvikvm(435): threadid=3: thread exiting with uncaught exception (group=0x4001b188) 07-18 09:55:02.324: E/AndroidRuntime(435): Uncaught handler: thread main exiting due to uncaught exception 07-18 09:55:02.344: E/AndroidRuntime(435): java.lang.NullPointerException 07-18 09:55:02.344: E/AndroidRuntime(435): at com.budget1.DBadapter.updateSpinTitle(DBadapter.java:128) 07-18 09:55:02.344: E/AndroidRuntime(435): at com.budget1.SpinnerEdit$1.onClick(SpinnerEdit.java:58) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.View.performClick(View.java:2364) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.View.onTouchEvent(View.java:4179) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.widget.TextView.onTouchEvent(TextView.java:6541) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.View.dispatchTouchEvent(View.java:3709) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 07-18 09:55:02.344: E/AndroidRuntime(435): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659) 07-18 09:55:02.344: E/AndroidRuntime(435): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.app.Activity.dispatchTouchEvent(Activity.java:2061) 07-18 09:55:02.344: E/AndroidRuntime(435): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.os.Handler.dispatchMessage(Handler.java:99) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.os.Looper.loop(Looper.java:123) 07-18 09:55:02.344: E/AndroidRuntime(435): at android.app.ActivityThread.main(ActivityThread.java:4363) 07-18 09:55:02.344: E/AndroidRuntime(435): at java.lang.reflect.Method.invokeNative(Native Method) 07-18 09:55:02.344: E/AndroidRuntime(435): at java.lang.reflect.Method.invoke(Method.java:521) 07-18 09:55:02.344: E/AndroidRuntime(435): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 07-18 09:55:02.344: E/AndroidRuntime(435): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 07-18 09:55:02.344: E/AndroidRuntime(435): at dalvik.system.NativeStart.main(Native Method) 07-18 09:55:02.366: I/dalvikvm(435): threadid=7: reacting to signal 3 07-18 09:55:02.366: E/dalvikvm(435): Unable to open stack trace file '/data/anr/traces.txt': Permission denied </code></pre>
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    1. CO[Go by this link][1] [1]: http://stackoverflow.com/questions/5265913/how-to-use-putextra-and-getextra-for-string-data that will help you to solve the problem
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    2. COI think your db is null in the method updateSpinTitle()
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    3. COPlease identify which line of code is at line 128 in DBadapter.java.
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      1. USTed Hopp
 

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