camera 旋转问题
class SurfaceHolderCallback implements SurfaceHolder.Callback {?
? ? private static final int IMAGE_WIDTH = 512;?
? ? private static final int IMAGE_HEIGHT = 384;?
? ? private static final String ORIENTATION = "orientation";?
? ? private static final String ROTATION = "rotation";?
? ? private static final String PORTRAIT = "portrait";?
? ? private static final String LANDSCAPE = "landscape";?
?
? ? public void surfaceCreated(SurfaceHolder holder) {?
? ? ? ? try {?
? ? ? ? ? ? // This case can actually happen if the user opens and closes the camera too frequently.?
? ? ? ? ? ? // The problem is that we cannot really prevent this from happening as the user can easily?
? ? ? ? ? ? // get into a chain of activites and tries to escape using the back button.?
? ? ? ? ? ? // The most sensible solution would be to quit the entire EPostcard flow once the picture is sent.?
? ? ? ? ? ? camera = Camera.open();?
? ? ? ? } catch(Exception e) {?
? ? ? ? ? ? finish();?
? ? ? ? ? ? return;?
? ? ? ? }?
?
? ? ? ? //Surface.setOrientation(Display.DEFAULT_DISPLAY,Surface.ROTATION_90);?
? ? ? ? Parameters p = camera.getParameters();?
? ? ? ? p.setPictureSize(IMAGE_WIDTH, IMAGE_HEIGHT);?
?
? ? ? ? camera.getParameters().setRotation(90);?
?
? ? ? ? Camera.Size s = p.getSupportedPreviewSizes().get(0);?
? ? ? ? p.setPreviewSize( s.width, s.height );?
?
? ? ? ? p.setPictureFormat(PixelFormat.JPEG);?
? ? ? ? p.set("flash-mode", "auto");?
? ? ? ? camera.setParameters(p);?
?
? ? ? ? try {?
? ? ? ? ? ? camera.setPreviewDisplay(surfaceHolder);?
? ? ? ? } catch (Throwable ignored) {?
? ? ? ? ? ? Log.e(APP, "set preview error.", ignored);?
? ? ? ? }?
? ? }?
?
? ? public void surfaceChanged(SurfaceHolder holder, int format, int width,?
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?int height) {?
? ? ? ? if (isPreviewRunning) {?
? ? ? ? ? ? camera.stopPreview();?
? ? ? ? }?
? ? ? ? try {?
? ? ? ? ? ? camera.startPreview();?
? ? ? ? } catch(Exception e) {?
? ? ? ? ? ? Log.d(APP, "Cannot start preview", e); ? ??
? ? ? ? }?
? ? ? ? isPreviewRunning = true;?
? ? }?
?
? ? public void surfaceDestroyed(SurfaceHolder arg0) {?
? ? ? ? if(isPreviewRunning && camera != null) {?
? ? ? ? ? ? if(camera!=null) {?
? ? ? ? ? ? ? ? camera.stopPreview();?
? ? ? ? ? ? ? ? camera.release(); ??
? ? ? ? ? ? ? ? camera = null;?
? ? ? ? ? ? }?
? ? ? ? ? ? isPreviewRunning = false;?
? ? ? ? }?
? ? }?
}?
