Choosing and Inserting Images from GridView to a Drawing View

Question

I am new to android development, and I am creating my first android application, Little bit about the app, It is Drawing App, but I have also added outlined images to the app loading the images into a GridView, I want the user to select the image so that the image comes back to the drawing view activity and user can paint over it. below Is my code that I am using... I am stuck, as when I select image from the grid view the selected image does not appear onto the drawing view. How to do that ?

This is MainActivity.class where the drawing view and behind it imageview is placed

`Intent imagePickIntent = new Intent(MainActivity.this, GalleryView.class);
        imagePickIntent.setType("image/*");
        imagePickIntent.setAction(Intent.ACTION_PICK);
        startActivityForResult(imagePickIntent, SELECT_PHOTO);`

This is GalleryView which has grid view in it where array of images are stored

final GridView gridview = (GridView) findViewById(R.id.selectGridView);
    gridview.setAdapter(new SelectImageAdapter(this));

    gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
            Intent intent = new Intent(GalleryView.this, MainActivity.class);
            startActivity(intent);
            Toast.makeText(GalleryView.this, "" + position,
                    Toast.LENGTH_SHORT).show();

Please help in selecting the image from the grid view, that after user selects the image the image should appear in the Main Activity to colour on to.

Thank you

Answer 1

This is sample code to use. I have implemented the below code in an app and it works. I added comments that you may follow along. Hope it helps.

// at the start of main activity class //have a static for the request code 


public class MainActivity extends Activity implements OnClickListener {

    private static final int FILE_DIALOGUE_ACTIVITY_REQUEST_CODE = 1;


//In activity Main Activity fire the intent to get result



Intent intentFileDialoge = new Intent (MainActivity.this, AndroidExplorer.class);
//get the file opened in the start of the activity get the resulting code in the static 
//FILE_DIALOGUE_ACTIVITY_REQUEST_CODE
startActivityForResult(intentFileDialoge, FILE_DIALOGUE_ACTIVITY_REQUEST_CODE);




    // on activity a override on activity result to get the result from the activity using the string result 
    //that is added from the activity with the string "result"
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// check the result code is 1 
        if (requestCode == FILE_DIALOGUE_ACTIVITY_REQUEST_CODE) {
            if(resultCode == Activity.RESULT_OK){

                //get the string from the "result"
                String  resultFromFileDialogueActivity=data.getStringExtra("result");

                //use the result to do with it what you want

                // this is an example of getting the result here being resultFromFileDialogueActivity 
                // and using it in a third activity . Activity c here is being started using the data 
                //from activity B that has 
                //been returned
                    Intent intentOpenFileInEditor = (new Intent (MainActivity.this, NotePadEditor.class));
                    intentOpenFileInEditor.putExtra("fileToOpen", resultFromFileDialogueActivity);
                    startActivity(intentOpenFileInEditor);

            }
            if (resultCode == Activity.RESULT_CANCELED) {
                //Write your code if there's no result
            }
        }
    }




//in the activity B where you are getting the result from 
// eg once an  onclick 
// listener  has finished and you have your file from the grid view
//


    //get the calling intent
    Intent returnIntent = getIntent();  
    //return the name of the file once you have finished picking the file
    //note file here is a varible that i already declared elsewhere and it contails the
    // file i need 
    returnIntent.putExtra("result", file.getPath());
    //set result ok if activity has finished without error
    setResult(Activity.RESULT_OK,returnIntent);
// finish the activity
    finish();