谁能解释一下为什么我在调用ActivityManager.RunningTaskInfo时总是遇到runtimeException，这是代码 fragment :
ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> listInfo = am.getRunningTasks(2);
ActivityManager.RunningTaskInfo taskInfo = listInfo.get(0);//it throws exception in this line
TextView title = (TextView) findViewById(R.id.textView_Settings_Title);
title.setText(taskInfo.topActivity.getClassName().toString());
最佳答案
尝试以下操作
final ActivityManager am = (ActivityManager) this.getSystemService(Context.ACTIVITY_SERVICE);
final List<ActivityManager.RunningTaskInfo> listInfo = am.getRunningTasks(Integer.MAX_VALUE);
for (int i = 0; i < listInfo.size(); i++)
{
if (listInfo.get(i).baseActivity.toShortString().indexOf("<yourproject>") > -1) {
ActivityManager.RunningTaskInfo taskInfo = listInfo.get(i);
}
}
另请尝试以下用户权限:
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.REORDER_TASKS" />
<uses-permission android:name="android.permission.MANAGE_APP_TOKENS" />
<uses-permission android:name="android.permission.SET_ACTIVITY_WATCHER" />
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
关于Android 运行任务信息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19932442/