哪裏應該放置超級（東西）？

我想知道super.onPreExecute()應該放在哪裏？或者換句話說，這是正確的代碼：哪裏應該放置超級（東西）？

@Override 
protected void onPreExecute() { 
    super.onPreExecute(); 
    RelativeLayout parent = (RelativeLayout) findViewById(R.id.layoutHomeInfo); 
    RelativeLayout.LayoutParams params = (LayoutParams) parent.getLayoutParams(); 
    params.addRule(RelativeLayout.ALIGN_PARENT_LEFT); 
    params.addRule(RelativeLayout.ALIGN_PARENT_TOP); 
    progress = new ProgressBar(mContext); 
    parent.addView(progress, params); 
}

或

@Override 
protected void onPreExecute() { 
    RelativeLayout parent = (RelativeLayout) findViewById(R.id.layoutHomeInfo); 
    RelativeLayout.LayoutParams params = (LayoutParams) parent.getLayoutParams(); 
    params.addRule(RelativeLayout.ALIGN_PARENT_LEFT); 
    params.addRule(RelativeLayout.ALIGN_PARENT_TOP); 
    progress = new ProgressBar(mContext); 
    parent.addView(progress, params); 
    super.onPreExecute(); 
}

來源

2012-08-17 Android Joker

我懷疑你實現了'AsyncTask'並且你在這裏調用的超級方法是空的，並且無論你在哪裏或者如何調用它們都沒有關係。我只是刪除線。 – zapl 2012-08-17 13:02:34