我正在尝试将double值与TreeMap对象中的另一个double值进行比较。我在将myPowerAvg与myMap.get(myMap.get(2))进行比较的行中收到以下错误。我不知道为什么我得到这个错误,因为我正在比较两个双打(顺便说一下,这个方法是在一个线程中执行的)。
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): FATAL EXCEPTION: Thread-23
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): java.lang.ClassCastException: java.lang.String
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): at java.lang.Integer.compareTo(Integer.java:36)
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): at java.util.TreeMap.cmp(TreeMap.java:1317)
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): at java.util.TreeMap.get(TreeMap.java:1282)
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): at com.community.HomeActivity.setTopUsers(HomeActivity.java:159)
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): at com.community.HomeActivity.access$0(HomeActivity.java:136)
12-10 22:12:30.524: ERROR/AndroidRuntime(1059): at com.community.HomeActivity$4.run(HomeActivity.java:127)
代码:
if(myPowerAvg < myMap.get(myMap.firstKey())){
TextView view = (TextView)findViewById(R.id.firstPlace);
}else{
TextView view = (TextView)findViewById(R.id.firstPlace);
view.setText("First Place: \n" + myMap.firstKey() + " " +
" at " + myMap.get(myMap.firstKey()) );
}
if(myPowerAvg < myMap.get(myMap.get(2)) && myPowerAvg > myMap.get(myMap.firstKey())){
TextView view = (TextView)findViewById(R.id.secondPlace);
view.setText("Second Place: \n" + AppStatus.mUserName + " " +
" at " + myPowerAvg;
}else{
TextView view = (TextView)findViewById(R.id.secondPlace);
view.setText("Second Place: \n" + myMap.get(2) + " " + " at " +
myMap.get(myMap.get(2)));
}
if(myPowerAvg < myMap.get(myMap.get(2)) && myPowerAvg > myMap.get(myMap.firstKey())){
TextView view = (TextView)findViewById(R.id.secondPlace);
view.setText("Second Place: \n" + AppStatus.mUserName + " " + " at "
+ myPowerAvg);
}else{
TextView view = (TextView)findViewById(R.id.secondPlace);
view.setText("Second Place: \n" + myMap.get(2) + " " + " at " +
myMap.get(myMap.get(2)));
}
答案 0 :(得分:0)
你说myMap是TreeMap<String, Double>
- 但是你正在调用myMap.get(2)。获取的参数应该是一个字符串。