1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
| package univ.rouen.spirit.activity;
import java.io.IOException;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import univ.rouen.spirit.activity.R;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore.Images.ImageColumns;
import android.provider.MediaStore.Images.Media;
import android.provider.MediaStore.MediaColumns;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
/**
* The home user interface of the spirit application
* that displays a camera, if we want to take a picture
* from the spirit application and allows to browse a
* picture from the smartphone memory.
*
* @author Spirit Red Team
*
*/
public class CameraActivity extends Activity implements SurfaceHolder.Callback {
// FIELDS
/**
* The camera object that spirit application uses
* to take a picture.
*/
private Camera camera;
/**
* Indicates if or not the photo
* preview is running. The default
* value is false.
*/
private boolean isPreviewRunning = false;
/**
* A date format to include in the picture name.
*/
private SimpleDateFormat timeStampFormat = new SimpleDateFormat("yyyy-MM-dd-HH.mm.ss");
/**
* The surfaceView field defines the camera area
* in the smartphone interface.
*/
private SurfaceView surfaceView;
/**
* Allows you to control the SurfaceView settings
* and to monitor changes on it. That's why the
* CameraActivity class implements SurfaceHolder.CallBack
* interface in order to be notified about changes in the
* SurfaceView calling the <em>SurfaceHolder.CallBack</em>
* methods: surfaceChanged, surfaceCreated and surfaceDestroyed.
*/
private SurfaceHolder surfaceHolder;
/**
* The handler that held a auto focus
* request on the camera. This field is
* initialized by the requestAutoFocus method
* and read in the onAutoFocus method of the
* autoFocusCallBack field.
*/
private Handler mAutoFocusHandler;
/**
* Message sent by mAutoFocusHandler.
*/
private int mAutoFocusMessage;
/**
* Uri that identifies the file where
* picture is going to be saved.
*/
private Uri taken;
/**
* The OutputStream to the picture taken file.
*/
private OutputStream fileoutputStream;
//the bundle used to transmit data to the following activities, like the picture's path
private Bundle b;
private String imgPath;
/**
* The take picture button listener.
*/
private OnClickListener btListener = new OnClickListener() {
public void onClick(View v) {
takeThePicture();
}
};
/**
* The image browser listener.
*/
private OnClickListener imageBrowserListener = new OnClickListener() {
public void onClick(View v) {
b=new Bundle();
b.putString("FILE",imgPath);
Intent intent1 = new Intent(CameraActivity.this, ImageBrowserActivity.class);
intent1.putExtras(b);
startActivity(intent1);
}
};
/**
* The callback called when focus
* is requested.
*/
private final Camera.AutoFocusCallback autoFocusCallback = new Camera.AutoFocusCallback() {
public void onAutoFocus(boolean success, Camera camera) {
if (mAutoFocusHandler != null) {
Message message = mAutoFocusHandler.obtainMessage(mAutoFocusMessage, success);
mAutoFocusHandler.sendMessageDelayed(message, 1500);
mAutoFocusHandler = null;
}
}
};
/**
* The callback called after the image
* is captured. It can be used to annotate
* the picture with the GPS coords.
*/
Camera.ShutterCallback mShutterCallback = new Camera.ShutterCallback() {
public void onShutter() {
Log.e(getClass().getSimpleName(), "SHUTTER CALLBACK");
// TODO
}
};
/**
* The callback called by the
* android.hardware.takePicture method when
* the byte data of the taken image is available.
* In this case it starts the picture preview.
*/
Camera.PictureCallback mPictureCallbackRaw = new Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera c) {
Log.e(getClass().getSimpleName(), "PICTURE CALLBACK RAW: " + data);
camera.startPreview();
}
};
/**
* The callback called when the
* compressed image (JPEG) is available.
* In this case it saves the picture into
* the smartphone memory.
*/
Camera.PictureCallback mPictureCallbackJpeg = new Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera c) {
try {
Log.v(getClass().getSimpleName(), "onPictureTaken=" + data + " length = " + data.length);
fileoutputStream.write(data);
fileoutputStream.flush();
fileoutputStream.close();
Intent intent1 = new Intent(CameraActivity.this, CityNameActivity.class);
intent1.putExtra("univ.rouen.spirit.imageUri", taken.getPath());
startActivity(intent1);
} catch(Exception ex) {
//TODO
}
}
};
// EVENTS HANDLER METHODS
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
Log.e(getClass().getSimpleName(), "onCreate");
getWindow().setFormat(PixelFormat.TRANSLUCENT);
setContentView(R.layout.camera_activity);
ImageButton b1 = (ImageButton) this.findViewById(R.id.takepicture);
b1.setOnClickListener(btListener);
surfaceView = (SurfaceView)findViewById(R.id.surface);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
ImageButton browse = (ImageButton) findViewById(R.id.browse);
browse.setOnClickListener(imageBrowserListener);
}
@Override
/**
* Switches from the CameraActivity to
* the LanguageChooserActivity
*/
public boolean onCreateOptionsMenu(Menu menu) {
Intent settingsActivity = new Intent(this, LanguageChooserActivity.class);
startActivity(settingsActivity);
return false;
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
}
/**
* Takes a picture pressing the center
* digital pad of the smartphone.
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
takeThePicture ();
return true;
}
if (keyCode == KeyEvent.KEYCODE_BACK) {
return super.onKeyDown(keyCode, event);
}
return false;
}
@Override
protected void onResume() {
Log.e(getClass().getSimpleName(), "onResume");
super.onResume();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
@Override
protected void onStop() {
Log.e(getClass().getSimpleName(), "onStop");
super.onStop();
}
// TOOLS
/**
* Takes the picture and calls every callback
* saved in the camera object
*/
private void takeThePicture() {
try {
String filename = "spirit" + timeStampFormat.format(new Date());
imgPath = filename + ".jpg";
ContentValues values = new ContentValues();
values.put(Media.TITLE, imgPath);
values.put(Media.DISPLAY_NAME, imgPath);
values.put(Media.DESCRIPTION, "Image capture by camera for Spirit Application");
long dt = new Date().getTime();
values.put(ImageColumns.DATE_TAKEN, dt);
values.put(MediaColumns.MIME_TYPE, "image/jpeg");
taken = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);
fileoutputStream = getContentResolver().openOutputStream(taken);
camera.takePicture(mShutterCallback, mPictureCallbackRaw, mPictureCallbackJpeg);
} catch(Exception ex ) {
ex.printStackTrace();
Log.e(getClass().getSimpleName(), ex.getMessage(), ex);
}
}
/**
* Request a focus
*
* @param handler the handler used to send the message
* @param message the message to be sent
*/
public void requestAutoFocus(Handler handler, int message) {
if (camera != null) {
mAutoFocusHandler = handler;
mAutoFocusMessage = message;
camera.autoFocus(autoFocusCallback);
}
}
/**
* Called when the SurfaceView is created.
* In this case it opens the camera.
*/
public void surfaceCreated(SurfaceHolder holder) {
Log.e(getClass().getSimpleName(), "surfaceCreated");
camera = Camera.open();
}
/**
* Called when the SurfaceView changes.
*/
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Log.e(getClass().getSimpleName(), "surfaceChanged");
if (isPreviewRunning) {
camera.stopPreview();
}
Camera.Parameters p = camera.getParameters();
p.setPreviewSize(w, h);
camera.setParameters(p);
try {
camera.setPreviewDisplay(holder);
} catch (IOException e) {
}
camera.startPreview();
isPreviewRunning = true;
}
/**
* Called when the surface is destroyed
*/
public void surfaceDestroyed(SurfaceHolder holder) {
Log.e(getClass().getSimpleName(), "surfaceDestroyed");
camera.stopPreview();
isPreviewRunning = false;
camera.release();
}
} |
Problème orientation caméra
Répondre avec citation
Partager