What is the best way of opening camera as sub-activity?

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Question:What is the best way of opening camera as sub-activity?

1.Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivity(takePictureIntent);

2.Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { startActivityForResult(takePictureIntent, 1); }

3.Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(takePictureIntent, 1);

4.Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getPackageManager()) != null) { startActivityForResult(takePictureIntent, -1); }

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  1. What is the best way of opening camera as sub-activity?
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