preview

I have subclassed the SurfaceView and instantiating it in onCreate of the Activity. The preview is generated but the control never enters onDraw() which is overriden in the subclass of SurfaceView. Why is that? class ActivityClass extends Activity{ onCreate(){ mPreview = new Preview(this); setContentView(mPreview); } public void startPreview(){ rec = new MediaRecorder(); rec.setVideoSource();....... rec.setPreviewDisplay(mPreview.getSurfaceHolder.getSurface()); } } class Preview extends SurfaceView implements SurfaceHolder.Callback{ SurfaceHolder mHolder; public Preview(Context context){ super

File is present in sdcard/image.jpg I would like to create my own application (activity). On a button press, the image stored in the sdcard needs to be displayed using the built-in image viewer. On pressing the back button from the Image viewer, it should go back to my running application. Need some help. Intent photoPickerIntent = new Intent(Intent.ACTION_PICK); photoPickerIntent.setType("image/*"); startActivityForResult(photoPickerIntent, 1); This code use for display all images from your SD card you can create an Intent with proper uri and mimetype for this. Intent i = new Intent(Intent

I have created a custom camera preview view CameraView which extends SurfaceView , and it also implements SurfaceHolder.Callback interface. The view operates with the camera. When you open the view it shows a camera preview. On the same screen there is also overlay with two buttons - 'Take picture', 'Choose from gallery'. The activity that holds the CameraView releases and reopens the camera in onPause() and onResume() methods. If I click the 'Choose from gallery' button, the following intent is created: Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("image/*");

I have a Tab Activity with 2 tabs (activities). Each tab has a 3d Open GL scene drawn on top of a SurfaceView with camera preview. Yet, depending on device orientation, tabs are being switched. The problem is that when the other activity starts, it calls camera.open(), which generates exception, saying that camera service is unavailable. In fact, the problem is that camera is not stopped when activity is paused, in other words onSurfaceDestroyed() is not called for the SurfaceView. I tried to stop camera when onPause() for activities is called, but get the same error still. Anyone had same

I have done this using "pay" tools like ASPOSE, but I was curious if there are any open source tools out there that will do this. I am sure there may be tools out there to do that, but if you can get the file into a format that can then be rasterized easily, it may be worth exploring that. eg converting the work doc to pdf then thumbnailing that. 来源： https://stackoverflow.com/questions/5921761/is-there-any-way-to-generate-a-thumbnail-image-of-a-docx-file

Can someone help me with creation of a url previews in JavaScript? What I mean is this: Say I have a link on my site, I want the user to be able to mouse over the link, and have an image pop up that shows what the target of the link looks like. Don't worry about the css, I got that working, I just need the actual script to show the image. Currently I am doing it by showing up an iframe that actually renders the page, but this is not scalable and looks ugly. Having the page display premade images is not an option, since the links will be linking to dynamically generated user content. You need