Fehler bei Service,welcher Camera API nutzt

1package com.jk.unlock;
2
3
4
5
6import android.os.Bundle;
7import android.app.Activity;
8import android.content.Intent;
9import android.view.Menu;
10import android.view.View;
11import android.widget.Button;
12
13
14
15public class MainActivity extends Activity
16{
17 @Override
18 protected void onCreate(Bundle savedInstanceState)
19 {
20 super.onCreate(savedInstanceState);
21 setContentView(R.layout.activity_main);
22
23 Button buttonStart= (Button)findViewById(R.id.btn_start);
24 Button buttonStop = (Button)findViewById(R.id.btn_stop);
25
26 buttonStart.setOnClickListener(btnStart);
27 buttonStop.setOnClickListener(btnStop);
28 }
29
30
31
32
33 //Intent serviceIntent = new Intent(MainActivity.this, photo_service.class);
34
35 Button.OnClickListener btnStart = new Button.OnClickListener() //
36 {
37 @Override
38 public void onClick(View v)
39 {/*
40 Intent serviceIntent = new Intent(getApplicationContext(), photo_service.class);
41 startService(serviceIntent);
42 */
43 startService(new Intent(getBaseContext(), photo_service.class));
44
45 }
46 };
47
48
49
50 Button.OnClickListener btnStop = new Button.OnClickListener() //
51 {
52 @Override
53 public void onClick(View v)
54 {
55
56 Intent serviceIntent = new Intent(getApplicationContext(), photo_service.class);
57 stopService(serviceIntent);
58 }
59 };
60
61
62
63 @Override
64 public boolean onCreateOptionsMenu(Menu menu)
65 {
66 // Inflate the menu; this adds items to the action bar if it is present.
67 getMenuInflater().inflate(R.menu.main, menu);
68 return true;
69 }
70
71}

1package com.jk.unlock;
2
3import android.app.Activity;
4import android.app.Activity;
5import android.content.pm.PackageManager;
6import android.hardware.Camera;
7import android.hardware.Camera.CameraInfo;
8import android.os.Bundle;
9import android.util.Log;
10import android.view.View;
11import android.widget.Toast;
12import android.app.Service;
13import android.content.BroadcastReceiver;
14import android.content.Intent;
15import android.content.IntentFilter;
16import android.os.IBinder;
17import android.widget.Toast;
18
19public class photo_service extends Service
20{
21 BroadcastReceiver mReceiver;
22 private final static String DEBUG_TAG = "MakePhotoActivity";
23 private Camera camera;
24 private int cameraId = 0;
25
26 @Override
27 public int onStartCommand(Intent intent, int flags, int startId) // Nach Start des Services...
28 {
29 try
30 {
31 IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); // Instanz von "Intentfilter" anlegen
32 filter.addAction(Intent.ACTION_SCREEN_OFF);
33 filter.addAction(Intent.ACTION_USER_PRESENT);
34 mReceiver = new receiverScreen(); // Screenreceiver instanziieren -> überwacht das Geschehen des Users auf dem Screen
35 registerReceiver(mReceiver, filter);
36
37 }
38
39 catch (Exception e)
40 {
41
42 }
43
44 return Service.START_STICKY; // erst bei explizitem Beenden den Service abschließen
45 }
46
47
48 private int findFrontFacingCamera()
49 {
50 int cameraId = -1;
51 // Search for the front facing camera
52 int numberOfCameras = Camera.getNumberOfCameras();
53 for (int i = 0; i < numberOfCameras; i++) //counts the quantity of the available cameras
54 {
55 CameraInfo info = new CameraInfo();
56 Camera.getCameraInfo(i, info);
57
58 Toast.makeText(this, Integer.toString(numberOfCameras), Toast.LENGTH_LONG).show();
59 if (info.facing == CameraInfo.CAMERA_FACING_FRONT)
60 {
61 Log.d(DEBUG_TAG, "Camera found");
62 cameraId = i;
63 break;
64 }
65 }
66
67 return cameraId;
68 }
69
70
71 protected void onPause()
72 {
73 if (camera != null)
74 {
75 camera.release();
76 camera = null;
77 }
78 onPause();
79 }
80
81
82
83
84
85
86
87
88
89 @Override
90 public void onDestroy()
91 {
92 super.onDestroy();
93 super.unregisterReceiver(mReceiver);
94 Toast.makeText(this,"Service stopped",Toast.LENGTH_LONG).show();
95 }
96
97
98
99 @Override
100 public IBinder onBind(Intent intent)
101 {
102 //TODO for communication return IBinder implementation
103 return null;
104 }
105}

1package com.jk.unlock;
2
3import java.io.File;
4import java.io.FileOutputStream;
5import java.text.SimpleDateFormat;
6import java.util.Date;
7
8import android.content.Context;
9import android.hardware.Camera;
10import android.hardware.Camera.PictureCallback;
11import android.os.Environment;
12import android.util.Log;
13import android.widget.Toast;
14
15public class PhotoHandler implements PictureCallback
16{
17
18 private final Context context;
19
20 public PhotoHandler(Context context)
21 {
22 this.context = context;
23 }
24
25 @Override
26 public void onPictureTaken(byte[] data, Camera camera) // after the picture was captured...
27 {
28 File pictureFileDir = getDir();
29 if (!pictureFileDir.exists() && !pictureFileDir.mkdirs())
30 {
31 //Toast.makeText(context, "Can't create directory to save image.",Toast.LENGTH_LONG).show();
32 return;
33
34 }
35
36 SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss"); // name the captured picture like the current date
37 String date = dateFormat.format(new Date());
38 String photoFile = "Picture_" + date + ".jpg";
39
40 String filename = pictureFileDir.getPath() + File.separator + photoFile; // get path of image-directory
41
42 File pictureFile = new File(filename);
43
44 try
45 {
46 FileOutputStream fos = new FileOutputStream(pictureFile); // try to save it
47 fos.write(data);
48 fos.close();
49 Toast.makeText(context, "New Image saved:" + photoFile,Toast.LENGTH_LONG).show(); // should be commented ;-)
50 }
51
52 catch (Exception error)
53 {
54
55 // Toast.makeText(context, "Image could not be saved.",Toast.LENGTH_LONG).show(); // should be commented ;-)
56 }
57 }
58
59 private File getDir() // returns the current directory to the external storage device
60 {
61 File sdDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
62 return new File(sdDir, "Unlock_pics"); // Directory, where the captured pictures will be stored
63 }
64}

1package com.jk.unlock;
2
3
4import android.content.BroadcastReceiver;
5import android.content.Context;
6import android.content.Intent;
7import android.content.pm.PackageManager;
8import android.hardware.Camera;
9import android.hardware.Camera.CameraInfo;
10import android.util.Log;
11import android.widget.Toast;
12
13public class receiverScreen extends BroadcastReceiver
14{
15 private Camera camera;
16 private int cameraId=0;
17 @Override
18 public void onReceive(Context context, Intent intent)
19 {
20
21 if (intent.getAction().equals(Intent.ACTION_SCREEN_ON))
22 {
23
24 }
25
26 if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF))
27 {
28
29 }
30
31 if (intent.getAction().equals(Intent.ACTION_USER_PRESENT)) // wenn Benutzer Screen entsperrt...
32 {
33
34 cameraId = findFrontFacingCamera();
35 if (cameraId < 0)
36 {
37 Toast.makeText(context, "No front facing camera found.",Toast.LENGTH_LONG).show();
38 }
39
40 else
41 {
42 camera = Camera.open(cameraId);
43 Toast.makeText(context, "KLACK!",Toast.LENGTH_LONG).show();
44
45 camera.takePicture(null, null, new PhotoHandler(context));
46 camera.release();
47 }
48 }
49
50 }
51
52
53
54
55
56private int findFrontFacingCamera()
57{
58 int cameraId = -1;
59 // Search for the front facing camera
60 int numberOfCameras = Camera.getNumberOfCameras();
61 for (int i = 0; i < numberOfCameras; i++) //counts the quantity of the available cameras
62 {
63 CameraInfo info = new CameraInfo();
64 Camera.getCameraInfo(i, info);
65
66
67 if (info.facing == CameraInfo.CAMERA_FACING_FRONT)
68 {
69
70 cameraId = i;
71 break;
72 }
73 }
74
75 return cameraId;
76}
77
78}

1<?xml version="1.0" encoding="utf-8"?>
2<manifest xmlns:android="http://schemas.android.com/apk/res/android"
3 package="com.jk.unlock"
4 android:versionCode="1"
5 android:versionName="1.0" >
6
7
8 <uses-permission android:name="android.permission.CAMERA" />
9 <uses-feature android:name="android.hardware.camera" />
10 <uses-feature android:name="android.hardware.camera.front" android:required="true" />
11 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
12
13
14 <uses-sdk
15 android:minSdkVersion="15" />
16
17 <application
18 android:allowBackup="true"
19 android:icon="@drawable/ic_launcher"
20 android:label="@string/app_name"
21 android:theme="@style/AppTheme" >
22
23
24
25
26 <activity
27 android:name="com.jk.unlock.MainActivity"
28 android:label="@string/app_name" >
29 <intent-filter>
30 <action android:name="android.intent.action.MAIN" />
31
32 <category android:name="android.intent.category.LAUNCHER" />
33 </intent-filter>
34
35
36
37
38 </activity>
39 <service android:name="photo_service"></service>
40
41
42 </application>
43
44</manifest>

1package com.jk.unlock;
2
3
4import android.os.Bundle;
5import android.app.Activity;
6import android.content.BroadcastReceiver;
7import android.content.Intent;
8import android.content.IntentFilter;
9import android.view.Menu;
10import android.view.View;
11import android.widget.Button;
12
13
14
15public class MainActivity extends Activity
16{
17 BroadcastReceiver mReceiver;
18
19 @Override
20 protected void onCreate(Bundle savedInstanceState)
21 {
22 super.onCreate(savedInstanceState);
23 setContentView(R.layout.activity_main);
24
25 Button buttonStart= (Button)findViewById(R.id.btn_start);
26 Button buttonStop = (Button)findViewById(R.id.btn_stop);
27
28 buttonStart.setOnClickListener(btnStart);
29 buttonStop.setOnClickListener(btnStop);
30 }
31
32
33 Button.OnClickListener btnStart = new Button.OnClickListener()
34 {
35 @Override
36 public void onClick(View v)
37 {
38 IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
39 mReceiver = new receiverScreen();
40 registerReceiver(mReceiver, filter);
41 }
42 };
43
44
45
46 Button.OnClickListener btnStop = new Button.OnClickListener()
47 {
48 @Override
49 public void onClick(View v)
50 {
51 //unregisterReceiver(mReceiver);
52
53 }
54 };
55
56@Override
57 protected void onDestroy()
58 {
59 super.onPause();
60 unregisterReceiver(mReceiver);
61 }
62
63}

1package com.jk.unlock;
2
3
4
5
6import android.content.BroadcastReceiver;
7import android.content.Context;
8import android.content.Intent;
9import android.content.pm.PackageManager;
10import android.hardware.Camera;
11import android.hardware.Camera.CameraInfo;
12import android.util.Log;
13import android.widget.Toast;
14
15public class receiverScreen extends BroadcastReceiver
16{
17 @Override
18 public void onReceive(Context context, Intent intent)
19 {
20 //Intent service = new Intent(context, photo_service.class);
21 Toast.makeText(context, "Jetzt wurde Entsperrung erkannt!", Toast.LENGTH_LONG).show();
22 // Kamerazeug....
23
24 }
25}

1package com.jk.unlock;
2
3
4import android.os.Bundle;
5import android.app.Activity;
6import android.content.BroadcastReceiver;
7import android.content.Intent;
8import android.content.IntentFilter;
9import android.hardware.Camera;
10import android.view.Menu;
11import android.view.View;
12import android.widget.Button;
13
14
15
16public class MainActivity extends Activity
17{
18 BroadcastReceiver mReceiver;
19
20
21 @Override
22 protected void onCreate(Bundle savedInstanceState)
23 {
24 super.onCreate(savedInstanceState);
25 setContentView(R.layout.activity_main);
26
27 Button buttonStart= (Button)findViewById(R.id.btn_start);
28 Button buttonStop = (Button)findViewById(R.id.btn_stop);
29
30 buttonStart.setOnClickListener(btnStart);
31 buttonStop.setOnClickListener(btnStop);
32 }
33
34
35 Button.OnClickListener btnStart = new Button.OnClickListener()
36 {
37 @Override
38 public void onClick(View v)
39 {
40 IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); // Instanz von "Intentfilter" anlegen
41 mReceiver = new receiverScreen(); // Screenreceiver instanziieren -> überwacht das Geschehen des Users auf dem Screen
42 registerReceiver(mReceiver, filter);
43
44 }
45 };
46
47
48
49 Button.OnClickListener btnStop = new Button.OnClickListener()
50 {
51 @Override
52 public void onClick(View v)
53 {
54 unregisterReceiver(mReceiver);
55 }
56 };
57
58 @Override
59 public void onBackPressed() // Wenn auf den "ZURÜCK"-Button gedrückt wird wird...
60 {
61 //unregisterReceiver(mReceiver);
62 finish(); // aktuelle Activity schließen. Es folgt die Mutter-Activity (dei Mudder!) ;)
63 }