如何提高gridview性能（android）(How to improve gridview performance (android))

如何提高gridview性能（android）(How to improve gridview performance (android))

如何提高gridView性能？ 滚动并不顺利。

这是我的代码：

public View getView(final int position, View convertView, ViewGroup parent) { View MyView; // Inflate the layout LayoutInflater li = ((Activity) MyContext).getLayoutInflater(); MyView = li.inflate(R.layout.gallery_adapter, null); ImageButton imageFolders = (ImageButton) MyView.findViewById(R.id.folder); try { imageFolders.setImageBitmap(bMap); imageFolders.setOnClickListener(this); imageFolders.setId(products.get(position).getId()); } catch (Exception e) { } MyView.setLayoutParams(70, 70); return MyView; }

我在这个gridView上有200个图像，但性能非常非常糟糕。

How can i improve my gridView performance? Scrolling is not smooth.

Here's my code:

public View getView(final int position, View convertView, ViewGroup parent) { View MyView; // Inflate the layout LayoutInflater li = ((Activity) MyContext).getLayoutInflater(); MyView = li.inflate(R.layout.gallery_adapter, null); ImageButton imageFolders = (ImageButton) MyView.findViewById(R.id.folder); try { imageFolders.setImageBitmap(bMap); imageFolders.setOnClickListener(this); imageFolders.setId(products.get(position).getId()); } catch (Exception e) { } MyView.setLayoutParams(70, 70); return MyView; }

I have something like 200 images on this gridView, but the performance is very, very bad.

最满意答案

你可以这样修改你的代码：

public View getView(final int position, View convertView, ViewGroup parent) { View MyView; if(convertView==null) { // Inflate the layout LayoutInflater li = ((Activity) MyContext).getLayoutInflater(); MyView = li.inflate(R.layout.gallery_adapter, null); ImageButton imageFolders = (ImageButton) MyView.findViewById(R.id.folder); try { imageFolders.setImageBitmap(bMap); imageFolders.setOnClickListener(this); imageFolders.setId(products.get(position).getId()); } catch (Exception e) { } MyView.setLayoutParams(70, 70); } else MyView = convertView; return MyView; }

已加载的图像将不会重新加载。 你试过这种可能吗？

you can modify your code like this:

public View getView(final int position, View convertView, ViewGroup parent) { View MyView; if(convertView==null) { // Inflate the layout LayoutInflater li = ((Activity) MyContext).getLayoutInflater(); MyView = li.inflate(R.layout.gallery_adapter, null); ImageButton imageFolders = (ImageButton) MyView.findViewById(R.id.folder); try { imageFolders.setImageBitmap(bMap); imageFolders.setOnClickListener(this); imageFolders.setId(products.get(position).getId()); } catch (Exception e) { } MyView.setLayoutParams(70, 70); } else MyView = convertView; return MyView; }

images already loaded will not be reloaded. have you tried this possibility ?