如何显示随机图像在Android？ [英] How to show random images on Android?

问题描述

我有我的目录中的号码图像。 我想显示随机图像的机器人。 请任何人都为我提供了一个例子。

I have a number of images in my directory. I want to show random images in ANDROID. Please anyone provide me with an example.

推荐答案

假设你的形象被命名为img1.png，img2.png，等等，它们都位于RES /绘制文件夹。

Assume that your images are named img1.png, img2.png, and so on, and they are located in res/drawable folder.

然后你可以用下面的code随机设置图像中的ImageView

Then you can use the following code to randomly set an image in an ImageView

ImageView imgView = new ImageView(this);
Random rand = new Random();
int rndInt = rand.nextInt(n) + 1; // n = the number of images, that start at idx 1
String imgName = "img" + rndInt;
int id = getResources().getIdentifier(imgName, "drawable", getPackageName());  
imgView.setImageResource(id); 

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