android/barcodesample/CamActivity.java

package dk.thoerup.android.barcodesample;

import android.app.Activity;
import android.content.Intent;
import android.hardware.Camera;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;

import java.io.IOException;


public class CamActivity extends ActionBarActivity {


    Camera cam;
    SurfaceView surfaceView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_cam);


        surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
        surfaceView.getHolder().addCallback(new SurfaceHolder.Callback() {
            public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
            }

            public void surfaceCreated(SurfaceHolder holder) {
                Log.i("CAM", "surface created");
                try {
                    cam.setPreviewDisplay(holder);
                    cam.startPreview();
                } catch (IOException e) {
                    Log.d("CAM", "Error opening cam", e);
                }


            }

            public void surfaceDestroyed(SurfaceHolder holder) {
            }
        });

        surfaceView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                cam.takePicture(
                        new Camera.ShutterCallback() {
                            @Override
                            public void onShutter() {
                            }
                        },
                        new Camera.PictureCallback() {//raw
                            @Override
                            public void onPictureTaken(byte[] data, Camera camera) {

                            }
                        },
                        new Camera.PictureCallback() {//postview
                            @Override
                            public void onPictureTaken(byte[] data, Camera camera) {

                            }
                        },
                        new Camera.PictureCallback() { //JPEG
                            @Override
                            public void onPictureTaken(byte[] data, Camera camera) {
                                cam.release();

                                Intent resultIntent = new Intent();
                                resultIntent.putExtra("DATA", data);
                                CamActivity.this.setResult(Activity.RESULT_OK, resultIntent);

                                CamActivity.this.finish();
                            }
                        });

            }

        });

        cam = Camera.open();
        setCameraDisplayOrientation(this,0,cam);
    }

    /*
     * l�nt fra
     * http://developer.android.com/reference/android/hardware/Camera.html#setDisplayOrientation(int)
     */
    public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) {
        android.hardware.Camera.CameraInfo info =  new android.hardware.Camera.CameraInfo();
        android.hardware.Camera.getCameraInfo(cameraId, info);
        int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();

        int degrees = 0;
        switch (rotation) {
            case Surface.ROTATION_0: degrees = 0; break;
            case Surface.ROTATION_90: degrees = 90; break;
            case Surface.ROTATION_180: degrees = 180; break;
            case Surface.ROTATION_270: degrees = 270; break;
        }

        int result;
        if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
            result = (info.orientation + degrees) % 360;
            result = (360 - result) % 360;  // compensate the mirror
        } else {  // back-facing
            result = (info.orientation - degrees + 360) % 360;
        }
        camera.setDisplayOrientation(result);
    }


    @Override
    protected void onPause () {
        super.onPause();
        cam.release();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_cam, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}
1	torben	2559	package dk.thoerup.android.barcodesample;
2
3			import android.app.Activity;
4			import android.content.Intent;
5			import android.hardware.Camera;
6			import android.support.v7.app.ActionBarActivity;
7			import android.os.Bundle;
8			import android.util.Log;
9			import android.view.Menu;
10			import android.view.MenuItem;
11			import android.view.Surface;
12			import android.view.SurfaceHolder;
13			import android.view.SurfaceView;
14			import android.view.View;
15
16			import java.io.IOException;
17
18
19			public class CamActivity extends ActionBarActivity {
20
21
22			Camera cam;
23			SurfaceView surfaceView;
24
25			@Override
26			protected void onCreate(Bundle savedInstanceState) {
27			super.onCreate(savedInstanceState);
28			setContentView(R.layout.activity_cam);
29
30
31			surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
32			surfaceView.getHolder().addCallback(new SurfaceHolder.Callback() {
33			public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
34			}
35
36			public void surfaceCreated(SurfaceHolder holder) {
37			Log.i("CAM", "surface created");
38			try {
39			cam.setPreviewDisplay(holder);
40			cam.startPreview();
41			} catch (IOException e) {
42			Log.d("CAM", "Error opening cam", e);
43			}
44
45
46			}
47
48			public void surfaceDestroyed(SurfaceHolder holder) {
49			}
50			});
51
52			surfaceView.setOnClickListener(new View.OnClickListener() {
53			@Override
54			public void onClick(View v) {
55			cam.takePicture(
56			new Camera.ShutterCallback() {
57			@Override
58			public void onShutter() {
59			}
60			},
61			new Camera.PictureCallback() {//raw
62			@Override
63			public void onPictureTaken(byte[] data, Camera camera) {
64
65			}
66			},
67			new Camera.PictureCallback() {//postview
68			@Override
69			public void onPictureTaken(byte[] data, Camera camera) {
70
71			}
72			},
73			new Camera.PictureCallback() { //JPEG
74			@Override
75			public void onPictureTaken(byte[] data, Camera camera) {
76			cam.release();
77
78			Intent resultIntent = new Intent();
79			resultIntent.putExtra("DATA", data);
80			CamActivity.this.setResult(Activity.RESULT_OK, resultIntent);
81
82			CamActivity.this.finish();
83			}
84			});
85
86			}
87
88			});
89
90			cam = Camera.open();
91			setCameraDisplayOrientation(this,0,cam);
92			}
93
94			/*
95			* l�nt fra
96			* http://developer.android.com/reference/android/hardware/Camera.html#setDisplayOrientation(int)
97			*/
98			public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) {
99			android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
100			android.hardware.Camera.getCameraInfo(cameraId, info);
101			int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
102
103			int degrees = 0;
104			switch (rotation) {
105			case Surface.ROTATION_0: degrees = 0; break;
106			case Surface.ROTATION_90: degrees = 90; break;
107			case Surface.ROTATION_180: degrees = 180; break;
108			case Surface.ROTATION_270: degrees = 270; break;
109			}
110
111			int result;
112			if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
113			result = (info.orientation + degrees) % 360;
114			result = (360 - result) % 360; // compensate the mirror
115			} else { // back-facing
116			result = (info.orientation - degrees + 360) % 360;
117			}
118			camera.setDisplayOrientation(result);
119			}
120
121
122			@Override
123			protected void onPause () {
124			super.onPause();
125			cam.release();
126			}
127
128			@Override
129			public boolean onCreateOptionsMenu(Menu menu) {
130			// Inflate the menu; this adds items to the action bar if it is present.
131			getMenuInflater().inflate(R.menu.menu_cam, menu);
132			return true;
133			}
134
135			@Override
136			public boolean onOptionsItemSelected(MenuItem item) {
137			// Handle action bar item clicks here. The action bar will
138			// automatically handle clicks on the Home/Up button, so long
139			// as you specify a parent activity in AndroidManifest.xml.
140			int id = item.getItemId();
141
142			//noinspection SimplifiableIfStatement
143			if (id == R.id.action_settings) {
144			return true;
145			}
146
147			return super.onOptionsItemSelected(item);
148			}
149			}