无法分配最终的局部变量，因为它是在封闭类型中定义的？
期望能够在最后创建一个具有Time和Cost值的变量，我将最终在TextView中显示。 尽管遇到了我的问题。
public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final int intTime = 30; final int intCost = 10; CheckBox CP = (CheckBox)findViewById(R.id.checkPepperoni); CheckBox CS = (CheckBox)findViewById(R.id.checkSausage); CheckBox CB = (CheckBox)findViewById(R.id.checkBacon); CheckBox CM = (CheckBox)findViewById(R.id.checkMushroom); final ImageView cheese =(ImageView)findViewById(R.id.imgCheese); final ImageView pepperoni =(ImageView)findViewById(R.id.imgPepperoni); final ImageView sausage =(ImageView)findViewById(R.id.imgSausage); final ImageView bacon =(ImageView)findViewById(R.id.imgBacon); final ImageView mushroom =(ImageView)findViewById(R.id.imgMushroom); final SharedPreferences sharedPref =PreferenceManager.getDefaultSharedPreferences(this); CP.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){ //Pepperoni Listener @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked1) { // TODO Auto-generated method stub if(isChecked1){ pepperoni.setImageResource(R.drawable.pepperoni); intTime = intTime + 6; intCost = intCost + 5; } else{ pepperoni.setImageResource(0); intTime = intTime - 6; intCost = intCost - 5; } }}); CS.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){ //Sausage Listener @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked2) { // TODO Auto-generated method stub if(isChecked2){ sausage.setImageResource(R.drawable.sausage); intTime = intTime + 6; intCost = intCost + 5; } else{ sausage.setImageResource(0); intTime = intTime - 6; intCost = intCost - 5; } }}); CB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){ @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked3) { // TODO Auto-generated method stub if(isChecked3){ bacon.setImageResource(R.drawable.bacon); intTime = intTime + 6; intCost = intCost + 5; } else{ bacon.setImageResource(0); intTime = intTime - 6; intCost = intCost - 5; } }}); CM.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){ @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked4) { // TODO Auto-generated method stub if(isChecked4){ mushroom.setImageResource(R.drawable.mushroom); intTime = intTime + 6; intCost = intCost + 5; } else{ mushroom.setImageResource(0); intTime = intTime - 6; intCost = intCost - 5; } }}); ImageButton IB = (ImageButton)findViewById(R.id.imgBtnGo); IB.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub String time = Integer.toString(intTime); String cost = Integer.toString(intCost); SharedPreferences.Editor editor = sharedPref.edit(); editor.putString("keyTime", time); editor.putString("keyCost", cost); startActivity(new Intent(MainActivity.this, ResultActivity.class)); } }); } } 我遇到的错误是“无法分配最终的局部变量intCost，因为它是在封闭类型中定义的。”
这意味着什么，是否有任何方法可以使用所有复选框更改此变量？
问题的原因是final变量应在声明时初始化， 不能重新分配 。 对于这种情况，最好的选择是在匿名类中创建以最终变量值开头的内部字段，并且此内部字段会定期更新。
例：
CP.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { //Pepperoni Listener int innerTime = intTime; int innerCost = intCost; @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked1) { if(isChecked1) { pepperoni.setImageResource(R.drawable.pepperoni); innerTime += 6; innerCost += 5; } else { pepperoni.setImageResource(0); innerTime -= 6; innerCost -= 5; } } });
更多信息：
- Java教程。 匿名课
我不能为什么你首先使用midficator final ，如果你只是删除它，你的代码将正常工作，我不确定，但我已经检查了onClick并且它的工作。 只要让他们成为田地，就没事了