preview

Android: Accessing hardware camera preview frame data without drawing them

醉酒当歌 提交于 2019-12-04 01:51:26
According to the android camera docs from the Java SDK side, the camera preview frames have to be supplied a (visible and active) surface to be drawn to in order to access the frame data. I have linked a few of the things I have come across here (I'm new so capped at 2 hyperlinks), but I went over tons of documentation of various things before winding up posting my own question here on SO. My Problems: a) I explicitly don't want to draw the camera preview to the screen, I just want the byte data (which I can get from here) straight from the camera buffer if possible. b) Yes, I saw this: Taking

Nexus 4 Camera preview aspect Ratio always requires 16x9 surfaceview? Why

百般思念 提交于 2019-12-03 23:59:38
Device Nexus 4 Android ver: 4.2.2 Hoping someone else has found this and can explain how to resolve it.... Nexus 4 supports the following preview sizes: - W:1280 H:720 Ratio: 1.777777 W:800 H:480 Ratio: 1.6666666 W:768 H:432 Ratio: 1.7777778 W:720 H:480 Ratio: 1.5 W:640 H:480 Ratio: 1.3333334 W:576 H:432 Ratio: 1.3333334 W:480 H:320 Ratio: 1.5 W:384 H:288 Ratio: 1.3333334 W:352 H:288 Ratio: 1.2222222 W:320 H:240 Ratio: 1.3333334 W:240 H:160 Ratio: 1.5 W:176 H:144 Ratio: 1.2222222 myCamera.setPreviewSize() sets them, and when I call myCamera.getPreviewSize() I get the correct one that I set,

Notepad++ hover preview on link or color?

自闭症网瘾萝莉.ら 提交于 2019-12-03 15:14:06
问题 I was wondering if there is a option or plugin , which allows us on hover to preview either a CSS color or image , something like this: And also if you hover over an img src - preview the img... ? 回答1: Try "Quick Color Picker for Notepad++". You double-click on the hex color and a color-picker pops up as well as a preview. Another cool thing is that it provides a few more colors that match the "theme" if you will. Here is the link Quick Color Picker SIDE NOTE: There used to be a feature or

How to use androidx.recyclerview.widget.RecyclerView with tools:listitem?

丶灬走出姿态 提交于 2019-12-03 14:50:39
How to use androidx.recyclerview.widget.RecyclerView with tools:listitem ? I have this layout: <?xml version="1.0" encoding="utf-8"?> <androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/recyclerViewActors" android:layout_width="match_parent" android:layout_height="match_parent" app:layoutManager="androidx.recyclerview.widget.GridLayoutManager" tools:layoutManager="androidx.recyclerview.widget.GridLayoutManager" tools:listitem="

Chrome -> Inspect element -> Network (XHR) -> Preview Tab (HTML) issue

佐手、 提交于 2019-12-03 14:24:13
I am having a problem with that preview tab in network section. When HTML is returned I am seeing the raw HTML in both preview and response. Sometimes, but very rarely, I HTML is rendered properly in Preview tab. Am I doing something wrong or it's just some Chrome bug? Thanks I was testing this as well. What did it for me was adding the http header. header('HTTP/1.1 500 Internal Server Error'); Then of course some proper markup formatting. But the status code was what I needed to convince chrome to render the preview. Problem is solved when you add a proper Content-Type header. If its text

How to recreate an image preview from outside websites?

血红的双手。 提交于 2019-12-03 13:48:42
问题 Similar to Facebook's UI, I am attempting at generating a preview image from an external linked website. So that when a user types in a url he is linking, the UI will by default, scan that site for an img and scrape a preview thumb. Is there a specific name for this technique? Or can anyone point me in the direction of learning this? Thanks so much! 回答1: Its called scraping. There is a library called scrAPI. Here is a code example http://crunchlife.com/articles/2007/08/13/code-snippet-ruby

Preview not Showing in Android 3.0 Canary

我们两清 提交于 2019-12-03 09:55:57
问题 I have started using Latest Android Studio 3.0 but I am having a problem with Preview. It's not showing Preview in Preview Tab. Here is what I have done <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white"> <RelativeLayout android:layout_width="match_parent" android

Camera preview UI overlay on Android?

混江龙づ霸主 提交于 2019-12-03 08:50:53
问题 How do I write code which layouts UI elements (Buttons, etc) over camera preview on Android ? 回答1: Put the SurfaceView in a container that allows for Z-axis layering, such as RelativeLayout or FrameLayout . Put the things to appear on top of the SurfaceView later in the XML -- later children of a parent will draw over top of earlier children in the parent. Here is a project using a SurfaceView for video playback that demonstrates the technique. The same concepts should hold for a SurfaceView

How to preview any files inside a Java application?

与世无争的帅哥 提交于 2019-12-03 08:04:10
I'm using a JTree to browse the content of a folder and I want that when a user click on a file, the software shows a preview of it (a screenshot of its first page). The files are mostly Office documents and PDF. I manage to do it for PDF file using a module downloaded from Sun, but I'd like to know if there is a way to do it using any software (JARs preferably) or even the built-in Windows API. I was thinking of converting the file to PDF then do a preview of this PDF but this isn't optimal. Any ideas ? I've got the similar problem and the best I found after couple of days of googling is