Android examples for android.app:ActivityManager
is Have Activity
import java.util.List; import android.app.ActivityManager; import android.app.ActivityManager.RunningTaskInfo; import android.content.Context; public class Main { private static final String TAG = "SystemUtils"; public static boolean isHaveActivity(String className, Context context) { boolean isHave = false; ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> activityList = am.getRunningTasks(100); if (!(activityList.size() > 0)) { return false; }/* w w w. j av a2s .com*/ for (int i = 0; i < activityList.size(); i++) { String topClassNameInfo = activityList.get(i).topActivity.getClassName(); String baseClassNameInfo = activityList.get(i).baseActivity.getClassName(); if (topClassNameInfo.equals(className) || baseClassNameInfo.equals(className)) { isHave = true; break; } } return isHave; } }