CODEWITHSUNDEEP
androidandroid-context
Silesia
Silesia

Reputation: 67

Android nullexception constructor

Hello i have a problem with the elimination of NullEx ...

I set mContext = context and now i have errors:

Implicit super constructor LinearLayout() is undefined. Must explicitly invoke another constructor

Constructor call must be the first statement in a constructor

public DigitalClock(Context context) {
    mContext=context;
    this(context, null);
 }

Earlier thread Android alarm Clock which shows problem.

Upvotes: 0

Views: 111

Answers (2)

Wug
Wug

Reputation: 13196

You need a superclass constructor call.

public DigitalClock(Context context) {
    super(context); // Add a line like this.  
                   // Consult constructor documentation for correct usage.
    this(context, null); // this line must also be at the top.
    mContext=context;
}

Upvotes: 2

0gravity
0gravity

Reputation: 2762

I would assume that you are extending View, in that case you need at least two constructors. 

//...Override Constructors...    
public DigitalClock(Context context, AttributeSet attrs) {
    super(context, attrs); 

}

public DigitalClock(Context context){
    super(context); 

}

See if that helps.

Upvotes: 1

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