Question

我有16个textViews，需要设置这样的东西：

for (int i=1; i<6; i++)
{
    int $RidInt = R.id.s; 
    tv[i] = (TextView)findViewById($RidInt);
    tv[i].setTypeface(face);
    tv[i].setClickable(true);
    tv[i].setOnClickListener(clickListener);
}

我的R.java文件是：

public final class R {
    public static final class attr {
    }
    public static final class drawable {
        public static final int icon=0x7f020000;
    }
    public static final class id {
        public static final int s1=0x7f050000;
        public static final int s10=0x7f050009;
        public static final int s11=0x7f05000a;
        public static final int s12=0x7f05000b;
        public static final int s13=0x7f05000c;
        public static final int s14=0x7f05000d;
        public static final int s15=0x7f05000e;
        public static final int s16=0x7f05000f;
        public static final int s2=0x7f050001;
        public static final int s3=0x7f050002;
        public static final int s4=0x7f050003;
        public static final int s5=0x7f050004;
        public static final int s6=0x7f050005;
        public static final int s7=0x7f050006;
        public static final int s8=0x7f050007;
        public static final int s9=0x7f050008;
    }
    public static final class layout {
        public static final int main=0x7f030000;
        public static final int toast=0x7f030001;
    }
    public static final class string {
        public static final int app_name=0x7f040000;
        public static final int s2=0x7f040001;
    }
}

Answer 1

那样的东西？

import java.lang.reflect.Field;
/* ... */

for (int i = 1; i < 16; i++) {
    int id = R.id.class.getField("s" + i).getInt(0);
    tv[i] = (TextView)findViewById(id);
    tv[i].setTypeface(face);
    tv[i].setClickable(true);
    tv[i].setOnClickListener(clickListener);
}

Answer 2

试试这个。

public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);
            LinearLayout ll = (LinearLayout) findViewById(R.id.LinearLayout01);
            for (int i = 0; i < ll.getChildCount(); i++) {
                ((TextView) ll.getChildAt(i)).setText("Text View " + i);
            }

Answer 3

我不得不把我的包裹在try / catch包装中，不知道为什么，但我很新。

for (int counter = 1; player < 5; counter++) {
        try {Field field = example.main.R.id.class.getField("s" + counter);
             try {screenid = field.getInt(null);} 
            catch (IllegalAccessException e){//exceptioncodehere}
        catch (NoSuchFieldException e) {//exception2codehere}
        TextView SetMe = (TextView)findViewById(screenid);
        SetMe.setText("Text" + player);}}

如何遍历R.java类的id属性？

3 个答案: