button null object reference

Question

i have custom alert dialog with two button inside. but each button have error null object reference, i want to make my relativelayout clickable and here is my java code :

RelativeLayout relaCamera;
RelativeLayout relaGallery;

relaCamera = findViewById(R.id.relaCameraIntent);
relaGallery = findViewById(R.id.relaGalleryIntent);
......
......
private void pickFromGallery() {
    LayoutInflater layoutInflater = LayoutInflater.from(this);
    View view = layoutInflater.inflate(R.layout.upload_video_options, null);

    final AlertDialog alertD = new AlertDialog.Builder(this).create();

    relaCamera.setOnClickListener(new View.OnClickListener() { // error here
        public void onClick(View v) {

            Intent intent = new Intent();
            intent.setTypeAndNormalize("video/*");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            startActivityForResult(Intent.createChooser(intent, "Select Video"), REQUEST_GET_VIDEO);

        }
    });

    relaGallery.setOnClickListener(new View.OnClickListener() {// error here
        public void onClick(View v) {

            Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
            if (takeVideoIntent.resolveActivity(getPackageManager()) != null) {
                startActivityForResult(takeVideoIntent, REQUEST_VIDEO_CAPTURE);
            }

        }
    });

    alertD.setView(view);

    alertD.show();
}

here is my upload_video_options.xml for customize the alert dialog:

<RelativeLayout
        android:id="@+id/relaCameraIntent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="20dp"
        android:clickable="true"
        android:gravity="center_horizontal"
        android:orientation="horizontal">
<RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:id="@+id/relaGalleryIntent"
        android:clickable="true"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="10dp"
        android:orientation="horizontal">

Abhishek kumar · Answer 1 · 2018-02-14T11:25:05.143

Try below Code , You are getting view from upload_video_options.xml so you need do like this.

    LayoutInflater layoutInflater = LayoutInflater.from(this);
                   View view = layoutInflater.inflate(R.layout.upload_video_options,null);

                       relaCamera = view.findViewById(R.id.relaCameraIntent);
                       relaGallery = view.findViewById(R.id.relaGalleryIntent);

Full Code :

 private void pickFromGallery() {
    LayoutInflater layoutInflater = LayoutInflater.from(this);
    View view = layoutInflater.inflate(R.layout.upload_video_options, null);

 relaCamera = view.findViewById(R.id.relaCameraIntent);
           relaGallery = view.findViewById(R.id.relaGalleryIntent);

    final AlertDialog alertD = new AlertDialog.Builder(this).create();


    relaCamera.setOnClickListener(new View.OnClickListener() { // error here
        public void onClick(View v) {

            Intent intent = new Intent();
            intent.setTypeAndNormalize("video/*");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            startActivityForResult(Intent.createChooser(intent, "Select Video"), REQUEST_GET_VIDEO);

        }
    });

    relaGallery.setOnClickListener(new View.OnClickListener() {// error here
        public void onClick(View v) {

            Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
            if (takeVideoIntent.resolveActivity(getPackageManager()) != null) {
                startActivityForResult(takeVideoIntent, REQUEST_VIDEO_CAPTURE);
            }

        }
    });

    alertD.setView(view);

    alertD.show();
    }

score 1 · Accepted Answer · edited Feb 14 '18 at 11:57

Try this one.

RelativeLayout relaCamera;
RelativeLayout relaGallery;  

private void pickFromGallery() {
    LayoutInflater layoutInflater = LayoutInflater.from(this);
    View view = layoutInflater.inflate(R.layout.upload_video_options, null);

    relaCamera = view.findViewById(R.id.relaCameraIntent);
    relaGallery = view.findViewById(R.id.relaGalleryIntent);
    final AlertDialog alertD = new AlertDialog.Builder(this).create();

    relaCamera.setOnClickListener(new View.OnClickListener() { // error here
        public void onClick(View v) {

            Intent intent = new Intent();
            intent.setTypeAndNormalize("video/*");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            startActivityForResult(Intent.createChooser(intent, "Select Video"), REQUEST_GET_VIDEO);

        }
    });

    relaGallery.setOnClickListener(new View.OnClickListener() {// error here
    public void onClick(View v) {

        Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
        if (takeVideoIntent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(takeVideoIntent, REQUEST_VIDEO_CAPTURE);
        }
    });

    alertD.setView(view);

    alertD.show();
}

The problem is you are searching for views in main layout instead of alerviews's layout.

Hope this will help you.

score 0 · Answer 3 · answered Feb 14 '18 at 11:15

0

relaCamera = view.findViewById(R.id.relaCameraIntent);
relaGallery = view.findViewById(R.id.relaGalleryIntent);

Try above code.

answered Feb 14 '18 at 11:15

Vishal G. Gohel

1,008
1
16
31

score 0 · Answer 4 · answered Feb 14 '18 at 11:17

0

Try this one:

relaCamera = view.findViewById(R.id.relaCameraIntent);
relaGallery = view.findViewById(R.id.relaGalleryIntent);

answered Feb 14 '18 at 11:17

Natig Babayev

3,128
15
23

button null object reference

4 Answers4