Je voudrais prendre une photo sans aucun aperçu. J'ai utilisé ce code mais j'obtiens une erreur :
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Camera.Parameters parameters = camera.getParameters();
parameters.setPictureFormat(PixelFormat.JPEG);
camera.setParameters(parameters);
SurfaceView mview = new SurfaceView(getBaseContext());
try {
camera.setPreviewDisplay(mview.getHolder());
camera.startPreview();
camera.takePicture(null,null,photoCallback);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Camera.PictureCallback photoCallback=new Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
Uri uriTarget = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, new ContentValues());
OutputStream imageFileOS;
try {
imageFileOS = getContentResolver().openOutputStream(uriTarget);
imageFileOS.write(data);
imageFileOS.flush();
imageFileOS.close();
Toast.makeText(AndroidTestJNIActivity.this, "Image saved: " + uriTarget.toString(), Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
finish();
}
};
Je reçois une NullPointerException lorsque j'essaie d'accéder à la caméra. Je ne sais pas comment l'initialiser. Je pense que le problème est que la caméra n'est jamais initialisée.
05-29 14:40:20.330: E/AndroidRuntime(15571): FATAL EXCEPTION: main
05-29 14:40:20.330: E/AndroidRuntime(15571): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.achillessecurity.androidtestjni/com.achillessecurity.androidtestjni.AndroidTestJNIActivity}: java.lang.RuntimeException: Fail to connect to camera service
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1768)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.ActivityThread.access$1500(ActivityThread.java:123)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.os.Handler.dispatchMessage(Handler.java:99)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.os.Looper.loop(Looper.java:130)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.ActivityThread.main(ActivityThread.java:3835)
05-29 14:40:20.330: E/AndroidRuntime(15571): at java.lang.reflect.Method.invokeNative(Native Method)
05-29 14:40:20.330: E/AndroidRuntime(15571): at java.lang.reflect.Method.invoke(Method.java:507)
05-29 14:40:20.330: E/AndroidRuntime(15571): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
05-29 14:40:20.330: E/AndroidRuntime(15571): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
05-29 14:40:20.330: E/AndroidRuntime(15571): at dalvik.system.NativeStart.main(Native Method)
05-29 14:40:20.330: E/AndroidRuntime(15571): Caused by: java.lang.RuntimeException: Fail to connect to camera service
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.hardware.Camera.native_setup(Native Method)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.hardware.Camera.(Camera.java:258)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.hardware.Camera.open(Camera.java:235)
05-29 14:40:20.330: E/AndroidRuntime(15571): at com.achillessecurity.androidtestjni.AndroidTestJNIActivity.onCreate(AndroidTestJNIActivity.java:42)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-29 14:40:20.330: E/AndroidRuntime(15571): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
J'initialise la caméra par : camera= Camera.open();