监控Activity在前后台状态的切换

public class BaseActivity extends Activity{

@Overrideprotected void onStop() {    boolean isOnForeground=isAppOnForeground();    RaiingLog.d("前后台测试-->>onStop-->>" + isAppOnForeground()+", name-->>"+this.getClass().getName()+", isShowDialog-->>"+isShowDialog);    super.onStop();}

@Overrideprotected void onResume() {    super.onResume();    boolean isOnForeground=isAppOnForeground();    RaiingLog.d("前后台测试-->>onResume-->>" + isAppOnForeground()+", name-->>"+this.getClass().getName()+", isShowDialog-->>"+isShowDialog);

}/** * 程序是否在前台运行 * * @return */public boolean isAppOnForeground() {    // Returns a list of application processes that are running on the    // device

    ActivityManager activityManager = (ActivityManager) getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE);    String packageName = getApplicationContext().getPackageName();

    List<ActivityManager.RunningAppProcessInfo> appProcesses = activityManager            .getRunningAppProcesses();    if (appProcesses == null)        return false;

    for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) {        // The name of the process that this object is associated with.        if (appProcess.processName.equals(packageName)                && appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {            return true;        }    }

    return false;}}