1.直接上代码：
// 将应用从后台置于前台
public static void moveToFront()
{
ActivityManager activtyManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> runningTaskInfos = activtyManager.getRunningTasks(3);
for (ActivityManager.RunningTaskInfo runningTaskInfo : runningTaskInfos)
{
if (this.getPackageName().equals(runningTaskInfo.topActivity.getPackageName()))
{
activtyManager.moveTaskToFront(runningTaskInfo.id, ActivityManager.MOVE_TASK_WITH_HOME);
return;
}
｝
}
2. 修改 AndroidMainifest.xml 中添加权限
<!-- 任务带到前台 -->
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.REORDER_TASKS" />