Question

我应该使用convertView还是在以下方法中创建一个新的视图？

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = inflater.inflate(R.layout.content, null);
    return v;
}

或

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    convertView = inflater.inflate(R.layout.content, null);
    return convertView;
}

Answer 1

每次View从绩效角度来看都是错误的决定。常见的模式是仅在convertView为空时才会使视图膨胀。所以，是的，请使用系统为您提供的视图。通过这种方式，您可以启用一些不浪费内存的魔术优化（查看循环）

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    if (convertView == null) {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    convertView = inflater.inflate(R.layout.content, null);
    }
    return convertView;
}

我应该使用convertView吗？

1 个答案: