Android将图片上传到服务器的有效方法 [英] android efficient way to upload image to server

问题描述

我正在寻找一种将图像从android上传到php服务器的方法，目前我正在将图像编码为base64并发送给它，但是它太慢了，有没有更好的方法

I'm looking for a way to upload an image from android to php server, currently I'm encoding the image to base64 and send it, but it's too slow, is there is a better way

我正在使用凌空作为网络客户端.

I'm using volley as network client.

推荐答案

我的2美分:

根据您要定位的目标，几乎没有什么可以改进的.

Few things can be improved depending on what you are targeting.

1. 如果您担心数据使用，则可以在上传之前减小图像的大小.对于较新的手机型号来说，现在的图片分辨率非常高.上传之前，您可以在设备本身上更改图像的大小.例如:如何将图像(位图)调整为给定大小? 和在Android中减小图像尺寸而不损失其质量
2. 如果您担心在上传图片时阻止用户:
   • 在后台执行上传部分，以免妨碍用户执行任何操作.
   • 还可以按照注释中的建议进行多部分上传，以防万一上传出现问题，您不必再次上传整个内容.

1. If you are worried about the data usage, then you can decrease the size of the image before uploading. Now a days for the newer phone models, the picture resolutions are very high. You can alter the size of the image on the device itself before uploading. Eg: How to resize image (Bitmap) to a given size? and Decrease image size without losing its quality in android
2. If you are worried about blocking user when the images are uploading:
   • Do the uploading part in the background, so that you don't block the user from doing anything.
   • Also as suggested in comments you can do a multi-part upload so that in case something goes wrong with the upload, you don't have to upload the whole thing again.

• 您需要更好的网络连接或减小图像尺寸.如果您知道大多数用户位于较低的连接区域中，那么减小大小可能会很好.
• 您可以使用某些库，例如 Facebook的网络连接 质量检查员 课检查 尝试上载并可能等待时的当前网络质量 上传之前先建立一个高质量的网络.
• 您可以选择仅在wi-fi上上传，然后使用BroadcastReceiver收听其状态更改. 例如: 当wifi或3g网络状态更改时的广播接收器
• 查看截击是否支持gzip压缩.如果确实如此，请确保您正在压缩请求.这样，您可以压缩请求数据，这可以极大地改善大小. Android Volley:gzip响应

• You either need a better network connectivity or lower the image size. If you know most of your users will be in lower connectivity areas, then it might be fine to decrease size.
• You can use some library like Facebook's Network Connection Quality Checker Class to check the current network quality when trying to upload and maybe wait for a good quality network before uploading.
• You can choose to only upload on wi-fi and use BroadcastReceiver to listen for the change in its state. Eg: BroadcastReceiver when wifi or 3g network state changed
• See if volley supports gzip compression. If it does make sure you are compressing the requests. This way you are zipping your request data which can be a substantial improvement in the size. Android Volley: gzip response

希望这会有所帮助.

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