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Is there a possibility to build a image comparison slide control in Android as one that exists in HTML 5? http://thenewcode.com/819/A-Before-And-After-Image-Comparison-Slide-Control-in-HTML5 How can I achieve this thing? I have created library for this functionality, may be someone who steel need this feature,it will be good for them. compile 'com.github.developer--:beforeafterslider:1.0.4' One way is using a seekbar and a framelayout that sits on top of the original Image. As you slide the seekbar the frames height adjusts which contains the 2nd image. Code for top down reveal private SeekBar

参考网页： https://github.com/bupy7/yii2-gridify-view http://demos.krajee.com/dialog 设想 用户点击朋友圈，可以选择更改头像。弹出对话框，选择头像。为简便，不增加剪切等功能，只提供在线更换，不提供上传功能。这个就是用于修改头像的。 一、安装 $ php composer.phar require bupy7/yii2-gridify-view "dev-master" $ php composer.phar require kartik-v/yii2-dialog "*" 其中，第二项，可能需要安装附加插件。在开发网站的时候，很多插件已经安装上了，遇到不能解决的问题，欢迎在下面留言。 二、使用 对于照片显示，需要一个能够访问的地址，为了访问这些照片，把这些照片作为公开的，不加权限的，可以任意访问。本文页面采用的 AdminLTE，所以在这个基础上继续本教程，如有不能继续，请等待 页面设计 博客的出现，致歉。 1、选择好头像放置在一个公共文件夹 假设你已经安装 https://github.com/dmstr/yii2-adminlte-asset 的 AdminLTE。本文的照片均放在 ./vendor/almasaeed2010/adminlte/dist/img/ 里。 分为 MVC 三部分来说。先说 C

I know how to get the current GPS location of a mobile phone. I also know how to save the GPS location to the photo when you take it. (Camera option Samsung galaxy s2). But how can I get the GPS location of that photo (later)? When I open the photo on the computer, I can see the GPS location data, but got no idea how to extract them later in android. So could someone put me in the good direction? To make question more clearly: How can I get the GPS location of a photo that is already taken? Thanks already, Bigflow josnidhin made this answer possible, so be sure to give him credit too :) Here

I've got an ImageView which I'm displaying a contacts picture using a Uri which always looks similar to this: content://com.android.contacts/contacts/34/photo How would I be able to detect whether this photo exists, as if it doesn't then I want to use a placeholder instead (stored in my drawable folder). At the moment it just shows a blank image. ng93 a function to get a contacts photo uri: public Uri getPhotoUri(Integer contactid) { Cursor photoCur = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null, ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '1'", null,