preview

Using readAsDataURL() for image preview

由 六眼飞鱼酱① 提交于 2019-11-26 16:37:35
问题 jsFiddle URL: http://jsfiddle.net/Xotic750/AjtLx Been working on this all day and I can't see the issue. It's probably due to my narrow understanding of how FileReader objects work but what I'm trying to do is use readAsDataURL() to obtain images a user has selected and preview them on the screen in a table. Everything is working minus...you guessed it...the preview...well sort of. I'm thinking I'm close because the preview will work, BUT it only displays the last image of the set. Say for

is it possible to preview local images before uploading them via a form?

由 匆匆过客 提交于 2019-11-26 15:55:12
问题 To be more specific, I want to use a form with one or more file input fields used for images. When those fields are changed, I'd like to show a preview of the associated image, before sending the data to the server. I've tried a number of javascript approaches, but I always run into security errors. I wouldn't mind using java or flash, as long as the solution degraded gracefully for those users who didn't have them. (They wouldn't get previews, and they wouldn't get an annoying 'install this

iPhone SDK - How to disable the picture preview in UIImagePickerController?

由 拜拜、爱过 提交于 2019-11-26 15:49:23
问题 Is there any way to disable the image preview after taking a picture with the UIImagePickerController? I want to dismiss the ImagePicker as soon as the user pressed the shutter release button. 回答1: I asked a similar question here My solution was to create a customized view on top of the default UIImagePickerControllerView. I downloaded the example Augmented Reality Then you can use the OverlayView.m and OverlayView.h by adding them to your project: I made the custom picker toolbar, picker and

Unsupported major.minor version 52.0 when rendering in Android Studio

由 怎甘沉沦 提交于 2019-11-26 12:16:01
When I try to render a layout preview in Android Studio I get error: Unsupported major.minor version 52.0 Fredblabla Check your JAVA_HOME to use jdk 1.8 Also check : the parameter in Android Studio in order to change at File->Other Settings->Default Project Structure->SDKs This is bug in Android Studio. Usually you get error: Unsupported major.minor version 52.0 WORKAROUND: If you have installed Android N, change Android rendering version with older one and the problem will disappear. SOLUTION: Install Android SDK Tools 25.1.3 (tools) or higher FeelCode I've all done, setting JAVA_HOME, JAVA8

How to WhiteList app in Doze mode Android 6.0

由 冷暖自知 提交于 2019-11-26 12:07:27
This question is related to the Android 6.0 Preview 3 which will be final released at the end of this month. I'm testing some stuff in Android 6.0 in the preview 3 from Google on Nexus 5 'hammerhead'. The new feature is the "doze mode" - something like deep sleep mode when the network is disabled and phone sleeps, only the SMS, calls or high priority GCM messages can wake it up. But like WhatsApp - in the doze mode it receives the messages after 2 hours or more depends on the timers. But there is a list of 'not optimised' apps called "white list" where u can manually add app. Ok, I'd like to

Camera preview image data processing with Android L and Camera2 API

由 ↘锁芯ラ 提交于 2019-11-26 07:18:55
问题 I\'m working on an android app that is processing the input image from the camera and displays it to the user. This is fairly simple, I register a PreviewCallback on the camera object with the setPreviewCallbackWithBuffer . This is easy and works smoothly with the old camera API public void onPreviewFrame(byte[] data, Camera cam) { // custom image data processing } I\'m trying to port my app to take advantage of the new Camera2 API and I\'m not sure how exactly shall I do that. I followed the

Unsupported major.minor version 52.0 when rendering in Android Studio

由 二次信任 提交于 2019-11-26 02:54:45
问题 When I try to render a layout preview in Android Studio I get error: Unsupported major.minor version 52.0 回答1: Check your JAVA_HOME to use jdk 1.8 Also check : the parameter in Android Studio in order to change at File->Other Settings->Default Project Structure->SDKs 回答2: This is bug in Android Studio. Usually you get error: Unsupported major.minor version 52.0 WORKAROUND: If you have installed Android N, change Android rendering version with older one and the problem will disappear. SOLUTION

How to WhiteList app in Doze mode Android 6.0

由 不羁的心 提交于 2019-11-26 02:30:33
问题 This question is related to the Android 6.0 Preview 3 which will be final released at the end of this month. I\'m testing some stuff in Android 6.0 in the preview 3 from Google on Nexus 5 \'hammerhead\'. The new feature is the \"doze mode\" - something like deep sleep mode when the network is disabled and phone sleeps, only the SMS, calls or high priority GCM messages can wake it up. But like WhatsApp - in the doze mode it receives the messages after 2 hours or more depends on the timers. But

Android Camera Preview Stretched

由 大城市里の小女人 提交于 2019-11-26 01:46:05
问题 I\'ve been working on making my custom camera activity on Android, but when rotating the camera, the aspect ratio of the surface view gets messed up. In my oncreate for the activity, I set the framelayout which holds the surface view that displays the camera\'s parameters. //FrameLayout that will hold the camera preview FrameLayout previewHolder = (FrameLayout) findViewById(R.id.camerapreview); //Setting camera\'s preview size to the best preview size Size optimalSize = null; camera =
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