我正在创建一种大脑训练器应用程序,仅用于练习。有两个数字被添加或减去,我们需要猜测结果。有四个按钮,一个是正确的值,另外三个是随机数。我有一个函数setQuestion()来完成所有这些。 当我按下其中一些按钮时,它会检查数字是否正确并更新分数。它应该调用函数setQuestion(),以便创建新值,但由于某种原因,单击按钮后应用程序崩溃。
setQuestion函数有效,因为它是在打开应用程序时运行的。 这是这两个函数的代码。
public void setQuestion(){
int firstNumber = randomNumberGenerator.nextInt(101);
int secondNumber = randomNumberGenerator.nextInt(101);
int operation = randomNumberGenerator.nextInt(2);
TextView firstNumberTextView = (TextView) findViewById(R.id.firstNumber);
TextView secondNumberTextView = (TextView) findViewById(R.id.secondNumber);
TextView operationTextView = (TextView) findViewById(R.id.operation);
if(operation == 0){
sum = firstNumber + secondNumber;
operationTextView.setText("+");
}
else{
while (secondNumber > firstNumber){
secondNumber = randomNumberGenerator.nextInt(101);
}
operationTextView.setText("-");
sum = firstNumber - secondNumber;
}
firstNumberTextView.setText(String.valueOf(firstNumber));
secondNumberTextView.setText(String.valueOf(secondNumber));
int operation1 = randomNumberGenerator.nextInt(2);
int operation2 = randomNumberGenerator.nextInt(2);
int operation3 = randomNumberGenerator.nextInt(2);
int answer1 = 0;
int answer2 = 0;
int answer3 = 0;
switch (operation1){
case 0:
answer1 = sum + randomNumberGenerator.nextInt(9) +1 +1;
break;
case 1:
int temp = randomNumberGenerator.nextInt(9) +1;
if(sum > temp){
answer1 = sum - temp;
}
else{
answer1 = temp;
}
}
switch (operation2){
case 0:
answer2 = sum + randomNumberGenerator.nextInt(9) +1;
break;
case 1:
int temp = randomNumberGenerator.nextInt(9) +1;
if(sum > temp){
answer2 = sum - temp;
}
else{
answer2 = temp;
}
}
switch (operation3){
case 0:
answer3 = sum + randomNumberGenerator.nextInt(9) +1;
break;
case 1:
int temp = randomNumberGenerator.nextInt(9) +1;
if(sum > temp){
answer3 = sum - temp;
}
else{
answer3 = temp;
}
}
buttonMap.add(0);
buttonMap.add(1);
buttonMap.add(2);
buttonMap.add(3);
Collections.shuffle(buttonMap);
int[] valArray = {sum, answer1, answer2, answer3};
for (int i = 0; i < buttonMap.size(); i++) {
int id = getResources().getIdentifier("b"+buttonMap.get(i), "id", getPackageName());
Button button = (Button) findViewById(id);
button.setText(String.valueOf(valArray[i]));
}
}
另一个:
public void answer(View view){
Button clickedButton = (Button) view;
String clickedValue = clickedButton.getText().toString();
int clickedValueInt = Integer.parseInt(clickedValue);
TextView allQuestion = (TextView) findViewById(R.id.totalQuestions);
numberOfQuestions = Integer.parseInt(allQuestion.getText().toString());
TextView correctQuestions = (TextView) findViewById(R.id.correctQuestions);
numberOfCorrectQuestions = Integer.parseInt(correctQuestions.getText().toString());
if(clickedValueInt == sum){
numberOfCorrectQuestions++;
correctQuestions.setText(String.valueOf(numberOfCorrectQuestions));
}
System.out.println(numberOfCorrectQuestions);
numberOfQuestions++;
allQuestion.setText(String.valueOf(numberOfQuestions));
setQuestion();
}
这是来自logcat的文本。
02-26 02:34:19.965 305-305 /? E / lowmemorykiller:编写错误/ proc / 18289 / oom_score_adj;错误号= 22 02-26 02:34:19.987 850-6076 /? E / ReportTools:这不是beta用户构建 02-26 02:34:20.167 850-1922 /? E / HsmCoreServiceImpl:代码中的onTransact是:102 02-26 02:34:20.221 27755-27832 /? E / PackageLogInfoManager:checkPackageLogState,cr:android.app.ContextImpl$ApplicationContentResolver@bb1c2fa,packageNames:null 02-26 02:34:20.327 18468-18486 /? E / linker:readlink(&#39; / proc / self / fd / 23&#39;)失败:权限被拒绝[fd = 23] 02-26 02:34:20.328 18468-18486 /? E / linker:警告:无法获取库的实际路径&#34; /system/lib64/hw/gralloc.hi6250.so"。将使用给定的名称。 02-26 02:34:20.335 18468-18486 /? E / linker:readlink(&#39; / proc / self / fd / 23&#39;)失败:权限被拒绝[fd = 23] 02-26 02:34:20.335 18468-18486 /? E / linker:警告:无法获取库的实际路径&#34; libion.so&#34;。将使用给定的名称。 02-26 02:34:20.461 18468-18468 /? E / TotemWeather:Utils错误:getWidgetShowCityInfo返回myLocation 02-26 02:34:20.463 18468-18485 /? E / TotemWeather:Utils错误:getWidgetShowCityInfo返回myLocation 02-26 02:34:20.522 9539-9608 /? E / HwLauncher:SettingsEx,没有这样的字段。 02-26 02:34:20.525 18468-18468 /? E / TotemWeather:Utils错误:getWidgetShowCityInfo返回myLocation 02-26 02:34:20.929 1854-1854 /? E / RegisteredServicesCache:invalidateCache set mNeedToastTableFull
答案 0 :(得分:0)
检查TextViews中的所有文本是否都可以转换为整数。你可以在你的问题中添加堆栈跟踪吗?
答案 1 :(得分:0)
错误就是这样。我有一个名为buttonMap的arrayList,我用它来访问按钮。每次调用setQuestion()方法时,它都会添加4个值(0,1,2,3)。我刚刚删除了这段代码
buttonMap.add(0);
buttonMap.add(1);
buttonMap.add(2);
buttonMap.add(3);
从该方法一切正常。