Java 使用循环引用不同的editText ID

可能重复：

我有一个大约100个EditText（15行，10列）的布局，所有这些都是根据它们的行/列ID命名的（例如box0101，box0102等）

我有一个clearBoard（）方法，当单击“clear”按钮时调用它（参见下面的代码）。它旨在循环遍历所有框（box0101、box0102、box0103等），并将内容替换为“”-使其为空白

LogCat中出现的错误是java.lang.NoSuchFieldException:box0101 在java.lang.Class.getDeclaredField（Class.java:631）-但是在我的xml中定义了一个box0101，我在代码中多次引用它，没有问题

有什么想法吗

从XML

           <EditText 
            android:gravity="center"
            android:layout_marginLeft="10dp"
            android:id="@+id/box0101"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:background="@drawable/boxoutlineone" />    
        <EditText 
            android:gravity="center"
            android:id="@+id/box0201"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:background="#000000" />   
        <EditText
            android:gravity="center" 
            android:id="@+id/box0301"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:background="#000000" />   
        <EditText 
            android:gravity="center"
            android:id="@+id/box0401"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:background="#000000" />

等等

    public void clearBoard() {
    final int ROW_COUNT = 14;
    final int COL_COUNT = 9;
    final String ROWS[] = {"01","02","03","04","05","06","07","08","09","10","11","12","13","14","15"};
    final String COLS[] = {"01","02","03","04","05","06","07","08","09","10"};

    for(int i=0; i<ROW_COUNT; i++) {
        for(int j=0; j<COL_COUNT; j++) {
            String a = ROWS[i];
            String b = COLS[j];
            int editTextId=getResId("box"+a+b,this,id.class);
            EditText et=(EditText)findViewById(editTextId);    
            et.setText("");
        }
    }
}

public static int getResId(String variableName, Context context, Class<?> c) {

    try {
        Field idField = c.getDeclaredField(variableName);
            return idField.getInt(idField);
        } catch (Exception e) {
            e.printStackTrace();
            return -1;
        }
}

public void clearBoard（）{
最终整数行计数=14；
最终整数列计数=9；
最后的字符串行[]={“01”、“02”、“03”、“04”、“05”、“06”、“07”、“08”、“09”、“10”、“11”、“12”、“13”、“14”、“15”}；
最终字符串COLS[]={“01”、“02”、“03”、“04”、“05”、“06”、“07”、“08”、“09”、“10”}；
对于（int i=0；i我不知道为什么您决定使用
字段
类来获取
id
，而不是更实用的方法：

for（int i=0；i）他们的ID是什么以及如何声明？请显示。。。
    public void clearBoard() {
    final int ROW_COUNT = 14;
    final int COL_COUNT = 9;
    final String ROWS[] = {"01","02","03","04","05","06","07","08","09","10","11","12","13","14","15"};
    final String COLS[] = {"01","02","03","04","05","06","07","08","09","10"};

    for(int i=0; i<ROW_COUNT; i++) {
        for(int j=0; j<COL_COUNT; j++) {
            String a = ROWS[i];
            String b = COLS[j];
            int editTextId=getResId("box"+a+b,this,id.class);
            EditText et=(EditText)findViewById(editTextId);    
            et.setText("");
        }
    }
}

public static int getResId(String variableName, Context context, Class<?> c) {

    try {
        Field idField = c.getDeclaredField(variableName);
            return idField.getInt(idField);
        } catch (Exception e) {
            e.printStackTrace();
            return -1;
        }
}

for(int i=0; i<ROW_COUNT; i++) {
    for(int j=0; j<COL_COUNT; j++) {
        String a = ROWS[i];
        String b = COLS[j];
        int editTextId = getResources().getIdentifier("box" + a + b , "id", getPackageName());
        EditText et=(EditText)findViewById(editTextId);    
        et.setText("");
    }
}