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(java.lang.RuntimeException): Unable to start activity ComponentInfo: java.lang.NullPointerException: println needs a me


(java.lang.RuntimeException): Unable to start activity ComponentInfo: java.lang.NullPointerException: println needs a me

By : E.F.J
Date : November 14 2020, 04:51 PM
wish of those help position is null. You cannot use Log.d() with a null message. If you wish to use Log.d(), check position and see if it is null first, then log something else. If you are not expecting position to be null, you need to see how your activity is being started and why your extra is missing or null.
code :


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java.lang.RuntimeException: Unable to start activity ComponentInfo java.lang.nullpointerexception newbie code

java.lang.RuntimeException: Unable to start activity ComponentInfo java.lang.nullpointerexception newbie code


By : 周日彬
Date : March 29 2020, 07:55 AM
To fix the issue you can do I'm very new to programming and I'm sorry if this type of question has been asked tons of times already. I'm really very new to all this and reading code is still quite confusing to me.
code :
add.getBackground().setColorFilter(color.white, null);
add.getBackground().setColorFilter(Color.white, PorterDuff.Mode.SRC_ATOP); //pick whatever PorterDuff mode is appropriate for you here
add.setBackgroundColor(Color.white);
java.lang.runtimeexception unable to start activity componentinfo java.lang.nullpointerexception android

java.lang.runtimeexception unable to start activity componentinfo java.lang.nullpointerexception android


By : DaCodeWhisper
Date : March 29 2020, 07:55 AM
it helps some times Yout btnCalculate is null, you should initialize before doing the onclickListener:
code :
 btnCalculate = (Button)findViewById(R.id.btnCalculate); //your id
java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException: println needs a mess

java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException: println needs a mess


By : Lalit Banga
Date : March 29 2020, 07:55 AM
With these it helps Enter the query like this and then try. you are missing a comma after address text and put space after the comma ... :)
code :
public void onCreate(SQLiteDatabase db) {
    String CREATE_USER_TABLE = "CREATE TABLE " + TABLE_USERS + "("
            + NAME + " TEXT, "
            + PHONE + " TEXT, "
            + EMAIL + " TEXT, "
            + ADDRESS + " TEXT, "
            + COMMENTS + " TEXT "
            + ")";
    db.execSQL(CREATE_USER_TABLE);
Android Studio 1.0.2: java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException

Android Studio 1.0.2: java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException


By : user3179470
Date : March 29 2020, 07:55 AM
I wish this helpful for you Here is the error: , try changing your theme to this
code :
<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException: storage == null

java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException: storage == null


By : Vadim
Date : March 29 2020, 07:55 AM
Any of those help This particular exception ("storage == null") is thrown when the array parameter passed to ArrayAdapter(Context, int, T[]) is null. (To be more specific, it's thrown from Arrays.java when it tries to create a new ArrayList wrapped around your null array.)
There should be no problem with the variable values itself, but are you absolutely sure that values is not null at the point you're passing it into the ArrayAdapter constructor? Just below the line
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