1 package com.example.hellohalide;
2 
3 import android.app.Activity;
4 import android.os.Bundle;
5 import android.hardware.Camera;
6 import android.util.Log;
7 import android.widget.FrameLayout;
8 import android.view.SurfaceView;
9 
10 public class CameraActivity extends Activity {
11     private static final String TAG = "CameraActivity";
12 
13     private Camera camera;
14     private CameraPreview preview;
15     private SurfaceView filtered;
16 
getCameraInstance()17     public static Camera getCameraInstance() {
18         Camera c = null;
19         try {
20             c = Camera.open();
21         } catch (Exception e) {
22             Log.d(TAG, "Could not open camera");
23         }
24         return c;
25     }
26 
27     @Override
onCreate(Bundle b)28     public void onCreate(Bundle b) {
29         super.onCreate(b);
30 
31         setContentView(R.layout.main);
32 
33         // Create a canvas for drawing stuff on
34         filtered = new SurfaceView(this);
35 
36         // Create our Preview view and set it as the content of our activity.
37         preview = new CameraPreview(this, filtered);
38 
39         FrameLayout layout = (FrameLayout) findViewById(R.id.camera_preview);
40         layout.addView(preview);
41         layout.addView(filtered);
42         filtered.setZOrderOnTop(true);
43     }
44 
45     @Override
onResume()46     public void onResume() {
47         super.onResume();
48         camera = getCameraInstance();
49         preview.setCamera(camera);
50     }
51 
52     @Override
onPause()53     public void onPause() {
54         super.onPause();
55         if (camera != null) {
56             preview.setCamera(null);
57             camera.release();
58             camera = null;
59         }
60     }
61 }