CODEWITHSUNDEEP
javaandroid
user3232134
user3232134

Reputation: 11

dynamic button calling from another class

I am new in java/Android, I want to pass method where i have defined my button property. and the the method is is written in another class which can not implement the Activity.

ex

class ViewProvider extends xyz
{
 public Button getButton(){
       Button one=new Button();
       one.setText("abc");
       one.setTypeface(Typeface.DEFAULT_BOLD);
       //and other properties like color,Gravity ect 
       return one
    }
}

Class calcu extends Activity{
   protected void onCreate(Bundle savedInstanceState) 
      {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.app_list);
        ViewProvider v=new ViewProvider();
       RelativeLayout relativelayout = new RelativeLayout(this);
       relativelayout.addView(v.getButton);
       setContentView(relativelayout);

       }

But i am getting an error

Upvotes: 0

Views: 263

Answers (2)

Biplab
Biplab

Reputation: 564

Just create an Activity data type and initialize it through constructor as below

class ViewProvider extends xyz
   Activity activity;
{

     public ViewProvider(Activity activity, JSONObject json) {
                      this.activity = activity;
                 }

    public Button getButton(activity){
    Button one=new Button();
    one.setText("abc");
    return one
}

then call the method as below on onCreate(Bundle savedInstanceState) 

ViewProvider v=new ViewProvider(this);
      RelativeLayout relativelayout = new RelativeLayout(this);
      relativelayout.addView(v.getButton);
      setContentView(relativelayout);

Upvotes: 2

Raghunandan
Raghunandan

Reputation: 133560

If you look at the constructors of button @ you have wrong params.

http://developer.android.com/reference/android/widget/Button.html

Button(Context context)
Button(Context context, AttributeSet attrs)
Button(Context context, AttributeSet attrs, int defStyle)

All the three take context as a param.

I would suggest you to read the docs

http://developer.android.com/guide/topics/ui/declaring-layout.html

Also you have setContentView twice which is not necessary.

Have the button initialized in activity itself

  Class calcu extends Activity{
   @Override
   protected void onCreate(Bundle savedInstanceState) 
   {
      super.onCreate(savedInstanceState);
       RelativeLayout relativelayout = new RelativeLayout(this);
       Button one=new Button(this);
       one.setText("abc");
       relativelayout.addView(one);
       setContentView(relativelayout);
   }
   }

Upvotes: 1

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