Java动态名称

Question

我知道，Java没有预处理器，因此Java中有些东西或多或少是不可能的。

真的 没有 办法在循环中用动态名称填充这些数组吗？我想要类似的东西：

for(int i=0;i<5;i++){
earnTvs[i]=(TextView) findViewById(R.id.INSERT_GREAT_TRICK_HERE("earn"+i+"Tv"));
}

代替

    earnTvs[0] = (TextView) findViewById(R.id.earn1Tv);
    earnTvs[1] = (TextView) findViewById(R.id.earn2Tv);
    earnTvs[2] = (TextView) findViewById(R.id.earn3Tv);
    earnTvs[3] = (TextView) findViewById(R.id.earn4Tv);
    earnTvs[4] = (TextView) findViewById(R.id.earn5Tv);
    timeTvs[0] = (TextView) findViewById(R.id.time1Tv);
    ...
    ownTvs[0] = (TextView) findViewById(R.id.own1Tv);
    ...
    costTvs[0] = (TextView) findViewById(R.id.build1Tv);
    ...
    buyBtns[0] = (ImageButton) findViewById(R.id.buy1Bt);
    ...
    progressBars[0] = (ProgressBar) findViewById(R.id.prog1pB);
    ...
    buildBtns[0] = (Button) findViewById(R.id.build1Bt);
    ...

还是有可以使用的古怪技巧？

Answer 1

我会那样做：

final int[] earnTvsId = new int[] {R.id.earn1Tv, R.id.earn2Tv, R.id.earn3Tv, R.id.earn4Tv ...};
for(int i = 0; i < earnTvsId.length; ++i){
    earnTvs[i] = (TextView) findViewById(earnTvsId[i]);
}

如果要使用该getIdentifier()方法：

for (int i = 0; i < NUMBER_OF_TEXTVIEWS; ++i) {
    final int resId = getResources().getIdentifier("earn" + i + "Tv", "id", getPackageName());
    earnTvs[i] = (TextView) findViewById(resId);
}