java - 获取动态生成的资源名称/字符串的 Drawable id

Question

.setBackgroundResource 只能接受 int 而不是字符串，但是如果 fabrik 的每个“升级”都不会那么臃肿和丑陋的话，它看起来会好得多，所以有没有办法简化这个:

    datafab1 = getSharedPreferences("datafab1", MODE_PRIVATE);

 if (datafab1.getInt("Level", 1) == 3) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl3);
        }
        if (datafab1.getInt("Level", 1) == 4) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl4);
        }
        if (datafab1.getInt("Level", 1) == 5) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl5);
        }
        if (datafab1.getInt("Level", 1) == 6) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl6);
        }
        if (datafab1.getInt("Level", 1) == 7) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl7);
        }
        if (datafab1.getInt("Level", 1) == 8) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl8);
        }
        if (datafab1.getInt("Level", 1) == 9) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl9);
        }
        if (datafab1.getInt("Level", 1) == 10) {
            Fabrik1.setBackgroundResource(R.drawable.fablvl10);
        }

像这样:

    datafab1 = getSharedPreferences("datafab1", MODE_PRIVATE);

String fablvl1nr = "R.drawable.fablvl"+Integer.toString(datafab1.getInt("Level", 1));
    Fabrik1.setBackgroundResource(fablvl1nr);

Answer 1

您正在寻找的方法是Resource类的getIdentifier:

int i = datafab1.getInt("Level", 1);
int id= getResources().getIdentifier("fablvl"+i, "drawable", getPackageName());