Question

我已经制作了string-array来保存一些短语，每当我调用class Master类的方法时，都应该显示这些短语。

但是当我输入Resources res = getResources();

时

它标志着getResources()红色表示没有这样的方法。

相反，如果我在主要活动中输入它，一切看起来都不错。

如何 <{1}} <{1}} reference string-array所以我可以在我的Main班级里面创建method 吗？

这是我的字符串数组：

Master

修改

这是我的大师班级

<string-array name="goodMorning"> <item>Good Morning folks!</item> [...] <item>Be beep. Be beep. %s wake up!</item> </string-array>

这是我的主要活动

public class Master extends Player { private String mName; private Context context; public String getmName(){ return mName; } // Get Master's name public static int randInt(int min, int max) { //Get a random int between two values // Usually this can be a field rather than a method variable Random rand = new Random(); // nextInt is normally exclusive of the top value, // so add 1 to make it inclusive int randomNum = rand.nextInt((max - min) + 1) + min; return randomNum; } public Master(Context c){ //it's your contsructor method this.context = c; } public void goodMorning() { // Get a random phrase from a String-Array and display it to the user int randomNumber = randInt(0, 8); //Random Number String[] arrayPhrases = context.getResources().getStringArray(R.array.goodMorning); // String-Array with 'morning phrases List<String> listPhrases = new ArrayList<>(); // List Collections.addAll(listPhrases, arrayPhrases); // Insert the String-Array in the List String randomPhrase = listPhrases.get(randomNumber); // Get the random phrase System.out.printf(randomPhrase); // Display it } }

问题是当我调用public class MainActivity extends AppCompatActivity { Master m = new Master(this); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } m.goodMorning(); }时，它无法识别goodMorning（）方法，有什么想法吗？

Answer 1

你可以这样做。

您的 MainActivity

public class MainActivity extends Activity()
{
     @Override
     protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContextView(R.layout.yourlayout);
           /*
                 Your operations 
           */

     }
     private void createClass()
     {
          YourMaster yourMaster = new YourMaster(MainActivity.this);
          yourMaster.doSomething();
     }

}

<强> YourMaster.Class

public class YourMaster
{
     private Context context;
     YourMaster(Context _context)    //it's your contsructor methot
     {
          this.context = _context;
     }
     private void doSomething()
     {
          context.getResources().getStringArray(R.array.goodMorning);

          //your array is yours now.
     }

}

获取对Main Activity外部的字符串数组的引用

1 个答案: