带有setString的android setText使用变量名 [英] android setText with getString using variable name

问题描述

因此，在互联网上搜索时，我发现了很多我不需要的示例...

So, searching the internet I found many examples that were not what I need...

这是我的情况:

假设您有一个资源，该资源是一个名为Songs的数组，并且每个歌曲的名称都有很多..因此，想象中您在列表视图中显示的歌曲名约为200个.

Imagine that you have a resource that is an array called songs and many 's with each song name..so, imagina you have like 200 song names displayed on a listview..

当您点击一首歌曲时，该应用会使用该歌曲的歌词加载另一个活动... 但是你怎么做到的?

when you click a song, the app loads another activity with the lyrics for that song... but HOW do you do that?

这是我的工作方式..我将歌曲的名称传递给了这个新活动，加载了歌词所在的资源...

Here is how I did it.. I passed the name of the song to this new activity, loaded the resource where the lyrics are...

但是，当我必须用歌词设置setText时，我遇到了问题...我应该切换200个案例吗?听起来很疯狂，所以我所做的是，我在歌词中使用了与歌曲相同的名称..因此它应该像这样加载:

BUT, at the time I have to setText with the lyrics, I got a problem... should I do a switch with 200 cases? that sounds insane, so, what I did was, I used the same name of the song to the lyrics..so it should load like this:

TextView txtProduct = (TextView) findViewById(R.id.product_label);

    Intent i = getIntent();
    // getting attached intent data
    String[] musicas = getResources().getStringArray(R.array.botafogo_songs);
    // this here is where it brings the name of the music to the activity
    String product = i.getStringExtra("product");
    // displaying selected product name
    if (Arrays.asList(musicas).contains(product)) {
            //just formating so they have the same name.
        String productSplit = product.split("- ")[1];
        productSplit.replace(" ", "");
        txtProduct.setText(getString(R.string.AbreAlas)); 
    }else{
        txtProduct.setText("não contem");
    }

好的，AbreAlas是我的资源的名称. 但是，我不能这样保留它.它应该是一个变量名. 像:R.string.+productSplit 或类似的东西.

Ok, AbreAlas is the name of my resource..it loads fine.. BUT, I cant leave it like this...it should be a variable name... like: R.string.+productSplit or something like this..

我找不到解决方案.

推荐答案

您可以使用getIdentifier():

int resourceName = getResources().getIdentifier(productSplit, "string", getPackageName());

然后:

txtProduct.setText(getString(resourceName));

别忘了将它包装起来，一目了然.

Don't forget to wrap that in a try and catch.

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