overlay

问题 I want to overlay a view over my entire app, all activities included. Think of it as a HUD (Head Up Display) over my app. The app has multiple activities, including a tab activity and the HUD doesn't interact with the user in any way, it just displays information while letting the user interact with the app as she would normally. I want this HUD for debugging purposes so I (and others) can monitor app activity and state when the phone is not attached to a debugging machine (field testing).

问题 I use a react native camera and a overlaying image on my app. Now i want to take a screenshot of that screen using a button. But when i take screenshot then only the overlaying image are shown on the image. i need to capture the screen with camera view and the overlaying image also. return ( <Camera ref={(cam) => { this.camera = cam; }} style={styles.preview} aspect={Camera.constants.Aspect.fill} captureTarget={Camera.constants.CaptureTarget.disk} > <Image style={{width: 400, height: 400}}

问题 I am developing an app for my Universities campus that displays the campus in a MapView; then using geopoints draws the outlines of the buildings on campus on the mapView using the draw method a class that extents Overlay. There are about 50-60 buildings being drawn, resulting in a very laggy map as the draw method constantly gets drawn over and over. I have looked into my problem and I have found some people mentioning drawing the buildings on a canvas, but I have found no good examples or

问题 I am using this code to build an animated gif from a sequence of pngs: convert -dispose previous -resize 400x400 -delay 10 *.png -loop 0 -coalesce -layers Optimize output.gif. it creates a gif with transparency, but when I overlay it over a jpg background, I get a weird result where a transparent box remains in the final image under my moving gif but over the jpg. From my tests, it seems this is a problem with the way I am building the original gif, but I have no idea. Also, I am stuck using

问题 I am wondering if it is possible to overlay an application made in electron over a game. essentially similar to how steam overlays in games. I want this because we have made a timer web app that times tasks and are debating making it an overlay if possible. to time certain events in games that reoccur I have no idea if this can be achieved but it is something high on our list. Any example of how this can be achieved or has anyone done this before. Thanks, Kieran 回答1: To draw overlay in a game

问题 I open the camera view and place an image as an overlay. I then want to save both the overlay and the camera view's image as one image. Previously I achieved this using UIGetScreenImage(). Now that Apple forbid this what are my options ? takePicture will only capture the camera data but the the overlay. Merging the overlay with the image from takePicture is a bit slow. 回答1: You really will have to merge them, and it shouldn't take more than a second or two. Something like(untested, but should

问题 I need to create a remove button that appear over my thumbs when a user hover that image with his mouse a link appear like remove from favorites? Anyone know how to achieve this ? An example of what I want is youtube quick list button you find over the videos thumbs. 回答1: This will show the icon when you hover the thumbnail, and when you hover the icon on top of that, it will change to a hover icon. .image-thumb, .image-thumb img { position:relative; width:60px; height:50px; } .image-fav {

问题 I am trying to overlay a sort of button on top of another button. The reason being I want to explain to the user what certain buttons will do. For example: There will be a button. In the top right or whatever of that button there will be a question mark. When the user presses the question mark it will explain what that button does. 回答1: Try using a Relative Layout. Link: http://developer.android.com/reference/android/widget/RelativeLayout.html It'll let you overlay. Relativelayout will let

问题 I need to take a picture with the camera and at the same time show an overlay image on top of the camera view. After the picture is taken, i need to save what the user saw while taking the picture. Can anyone suggest me? Please. 回答1: public void onPictureTaken(byte[] data, Camera camera){ Bitmap cameraBitmap = BitmapFactory.decodeByteArray(data, 0, data.length); wid = cameraBitmap.getWidth(); hgt = cameraBitmap.getHeight(); Bitmap newImage = Bitmap.createBitmap(wid , hgt , Bitmap.Config.ARGB

问题 I know there is plenty of post about this topic , however I've been looking for a solution to this for months. I checked about 300 posts on google about this. The only good thing I found was a c++ program that was drawing a colored rectangle over League's window. I am not very familiar with directx. My program is in c# and I would to write text or if possible make a winForm visible over a full screen video game. I tried every single sample found on forums but 50% of them are old and links