Taller parte 2: Uso de la cámara

activity_camera.xml

<Button
    android:text="Tomar Foto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/textView"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:id="@+id/button2"
    android:onClick="tomarFoto"/>

<ImageView
    android:layout_width="match_parent"
    android:layout_height="300dp"
    app:srcCompat="@android:color/darker_gray"
    android:layout_below="@+id/button2"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:id="@+id/imageView"/>

AndroidManifest.xml

<manifest ... >
    <uses-feature android:name="android.hardware.camera"
                  android:required="true" />
    ...
</manifest>

CameraActivity.java

import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;

public class CameraActivity extends AppCompatActivity {

    private static final int IMAGE_FROM_CAMERA = 1;
    
    private ImageView imageView; 
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        ...
        imageView = ((ImageView) findViewById(R.id.imageView));
    }
    
    ...

    public void tomarFoto(View view) {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(takePictureIntent, IMAGE_FROM_CAMERA);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == IMAGE_FROM_CAMERA && resultCode == RESULT_OK) {
            Bundle extras = data.getExtras();
            Bitmap imageBitmap = (Bitmap) extras.get("data");
            imageView.setImageBitmap(imageBitmap);
        }
    }
}