SimpleAdapter 动态加载数据

import java.util.List;import java.util.Map;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Checkable;import android.widget.ImageView;import android.widget.RatingBar;import android.widget.SimpleAdapter;import android.widget.TextView;public class MyAdapter extends SimpleAdapter {private int[] mTo;private String[] mFrom;private ViewBinder mViewBinder;private List<? extends Map<String, ?>> mData;private int mResource;private int mDropDownResource;private LayoutInflater mInflater;public MyAdapter(Context context, List<? extends Map<String, ?>> data,int resource, String[] from, int[] to) {super(context, data, resource, from, to);mData = data;mResource = mDropDownResource = resource;mFrom = from;mTo = to;mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);}@Overridepublic int getCount() {return mData.size();}public View getView(int position, View convertView, ViewGroup parent) {return createViewFromResource(position, convertView, parent, mResource);}/** * 根据数据动态创建显示控件 * @param position * @param convertView * @param parent * @param resource * @return */private View createViewFromResource(int position, View convertView,ViewGroup parent, int resource) {View v;if (convertView == null) {v = mInflater.inflate(resource, parent, false);final int[] to = mTo;final int count = to.length;final View[] holder = new View[count];for (int i = 0; i < count; i++) {holder[i] = v.findViewById(to[i]);}v.setTag(holder);} else {v = convertView;}bindView(position, v);return v;}/** * 控件绑定值 * @param position * @param view */private void bindView(int position, View view) {final Map dataSet = mData.get(position);if (dataSet == null) {return;}final ViewBinder binder = mViewBinder;final View[] holder = (View[]) view.getTag();final String[] from = mFrom;final int[] to = mTo;final int count = to.length;for (int i = 0; i < count; i++) {final View v = holder[i];if (v != null) {final Object data = dataSet.get(from[i]);String text = data == null ? "" : data.toString();if (text == null) {text = "";}boolean bound = false;if (binder != null) {bound = binder.setViewValue(v, data, text);}if (!bound) {if (v instanceof Checkable) {if (data instanceof Boolean) {((Checkable) v).setChecked((Boolean) data);} else {throw new IllegalStateException(v.getClass().getName()+ " should be bound to a Boolean, not a "+ data.getClass());}} else if (v instanceof TextView) {((TextView) v).setText(text);} else if (v instanceof ImageView) {if (data instanceof Integer) {setViewImage((ImageView) v, (Integer) data);} else if (data instanceof byte[]) { // 备注1// Bitmap bmp;// byte[] image = (byte[])data;// if(b.length!=0){// bmp = BitmapFactory.decodeByteArray(b, 0, b.length);// ((ImageView) v).setImageBitmap(bmp);}} else if (v instanceof RatingBar) {float score = Float.parseFloat(data.toString()); // 备注2((RatingBar) v).setRating(score);} else {throw new IllegalStateException(v.getClass().getName()+ " is not a "+ " view that can be bounds by this SimpleAdapter");}}}}}public void setViewImage(ImageView v, int value) {v.setImageResource(value);}public void setListData(List<? extends Map<String, ?>> data){mData = data;}}

测试了一下SimpleAdapter延时加载数据，动态更新时会有些问题，修改了一下MyAdapter，可以很好的适应这种自定义数据的绑定！