Question

How do I pass an intent from an activity to a class extending surfaceview?

Heres the code that sends out the intent:

btnCutOutter.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            //Send intent to cut image from user selection path
            //See designCanvas.java for details

            String optionSelected = "Yes";
            Intent myIntent = new Intent(view.getContext(), designCanvas.class);
            myIntent.putExtra("id",optionSelected );

        }
    });  

When I try to retrieve the intent data :

public class designCanvas extends SurfaceView implements SurfaceHolder.Callback {
//Create shape using Path
    Path mPath = new Path();
    private drawThread _thread;
    private ArrayList<GraphicObject> _graphics = new ArrayList<GraphicObject>();

    public designCanvas(Context context, AttributeSet attributes) {
        super(context, attributes);
        getHolder().addCallback(this);
        setFocusable(true);
        _thread = new drawThread(getHolder(), this); 
        String optionSelected = getIntent().getStringExtra("id");

                                         . . .

I am informed by eclipse that :

The method getIntent() is undefined 

I would be very grateful if someone could give me so guidance on this 🙂

Many thanks.

Answer 1

Any view in an android is contained within an activity, therefore the activity has a reference to the view (in this case a SurfaceView). So its simply a matter of getting the intent data in the Activity then using a setter for the data you want to pass to the SurfaceView

So in the Activity that holds the SurfaceView call getIntent like you have in your question then call a setter in the SurfaceView eg. mySurfaceView.setSomeValue(someValue)

EDIT

You are calling getIntent() in the designCanvas class it needs to be called in the Activity thats holds SurfaceView

public SomeActivity extends Activity{

public void onCreate(Bundle b){
     super.onCreate(b);

     //give that the constructor for your surface view has an attributeset i assume    
     //you are creating it in xml
     designCanvas dc = findViewById(someid);

     String s = getIntent(.getStringExtra("id");
     dc.setId(s);

}