Bug:java.lang.IllegalStateException

Posted 2020-06-18 熠然

使用迭代的时候，出现了java.lang.IllegalStateException

代码：

 1 for ( TaskInfo info : userTaskInfos ) {
 2                 if ( info.isChecked() ) {
 3                     am.killBackgroundProcesses(info.getPackageName());
 4                     if ( getPackageName().equals(info.getPackageName()) ) {
 5                         continue;
 6                     }
 7                     avaliMem = avaliMem + info.getMemSize();
 8                     runningTaskCount = runningTaskCount - 1;
 9                     userTaskInfos.remove(info)
10 
11                 }
12             }

原因：迭代的时候，不能操作数据。

解决办法：

 1 List< TaskInfo > removeTasks = new ArrayList<>();
 2 
 3             for ( TaskInfo info : userTaskInfos ) {
 4                 if ( info.isChecked() ) {
 5                     am.killBackgroundProcesses(info.getPackageName());
 6                     if ( getPackageName().equals(info.getPackageName()) ) {
 7                         continue;
 8                     }
 9                     avaliMem = avaliMem + info.getMemSize();
10                     runningTaskCount = runningTaskCount - 1;
11                     removeTasks.add(info);
12                 }
13             }
14             userTaskInfos.removeAll(removeTasks);