Android:将字符串的首字母转换为小写

Question

我正在寻找一种将字符串的第一个字母转换为小写字母的方法。我正在使用的代码从数组中提取一个随机字符串，在 TextView 中显示该字符串，然后使用它来显示图像。数组中的所有字符串的首字母都大写，但存储在应用程序中的图像文件当然不能有大写字母。

String source = "drawable/"
//monb is randomly selected from an array, not hardcoded as it is here
String monb = "Picture";

//I need code here that will take monb and convert it from "Picture" to "picture"

String uri = source + monb;
    int imageResource = getResources().getIdentifier(uri, null, getPackageName());
    ImageView imageView = (ImageView) findViewById(R.id.monpic);
    Drawable image = getResources().getDrawable(imageResource);
    imageView.setImageDrawable(image);

谢谢!

Answer 1

    if (monb.length() <= 1) {
        monb = monb.toLowerCase();
    } else {
        monb = monb.substring(0, 1).toLowerCase() + monb.substring(1);
    }