I have a litte problem with a tutorial that I follow. I want to make a android application with a camera preview, but until now I haven't found any good tutorial that show how to do it. Here is the link The tutorial I'm not quite shure if I can use the "camera with intent" insted of the "camera preveiew" ? What do I do.
Thanks :)
PreviewView is a subclass of FrameLayout . To display the camera feed, it uses either a SurfaceView or TextureView , provides a preview surface to the camera when it's ready, tries to keep it valid as long as the camera is using it, and when released prematurely, provides a new surface if the camera is still in use.
The image must be rotated 270 degrees counterclockwise so that the preview's orientation matches the device orientation: A back-facing camera would produce an image buffer with the same orientation as the buffer above, but SENSOR_ORIENTATION is 90 degrees. As a result, the buffer is rotated 90 degrees clockwise.
For new apps, we recommend starting with CameraX. It provides a consistent, easy-to-use API that works across the vast majority of Android devices, with backward-compatibility to Android 5.0 (API level 21).
Below Tutorials will help you.
http://www.vogella.com/articles/AndroidCamera/article.html
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/CameraPreview.html
Call inbuilt camera intent to have picture.
public class demo extends Activity {
Button ButtonClick;
int CAMERA_PIC_REQUEST = 1337;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ButtonClick =(Button) findViewById(R.id.Camera);
ButtonClick.setOnClickListener(new OnClickListener (){
@Override
public void onClick(View view)
{
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
// request code
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if( requestCode == 1337)
{
// data.getExtras()
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
Now you have received the bitmap..you can pass that bitmap to other activity
and play with it in this activity or pass this bitmap to other activity
and then upload it to server.
}
else
{
Toast.makeText(demo.this, "Picture NOt taken", Toast.LENGTH_LONG);
}
super.onActivityResult(requestCode, resultCode, data);
}
}
I'm currently working on a fork of the CameraPreviewSample project. The nice thing about this example is that the github sources are tagged for several steps needed to make the camera preview work.
So if you're looking into that running over the several tags (check readme for details) might be a good idea.
Another good resource are the training articles from Google. For camera the Android Training Article about Camera control is best.
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