开源项目地址:https://github.com/open-android/DynamicGridView
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compile 'com.github.open-android:DynamicGridView:0.1.0' <org.askerov.dynamicgrid.DynamicGridView android:id="@+id/dynamic_grid" android:layout_height="wrap_content" android:layout_width="match_parent" android:numColumns="@integer/column_count" /> gridView = (DynamicGridView) findViewById(R.id.dynamic_grid); // 第一个参数：上下文 // 第二个参数：adapter展示需要用到的集合数据 // 第三个参数：gridview一共有多少列 gridView.setAdapter(new MyDynamicGridAdapter(this, itemsList, 3)); gridView.setOnDragListener(new DynamicGridView.OnDragListener(){@Override public void onDragStarted(int position){Log.d(TAG, "drag started at position " + position)} @Override public void onDragPositionsChanged(int oldPosition, int newPosition){Log.d(TAG, String.format("drag item position changed from %d to %d", oldPosition, newPosition))} }); gridView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener(){@Override public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id){gridView.startEditMode(position); return true} }); gridView.setOnItemClickListener(new AdapterView.OnItemClickListener(){@Override public void onItemClick(AdapterView<?> parent, View view, int position, long id){Toast.makeText(GridActivity.this, parent.getAdapter().getItem(position).toString(), Toast.LENGTH_SHORT).show()} }); @Override public void onBackPressed(){if (gridView.isEditMode()){gridView.stopEditMode()} else{super.onBackPressed(); //进行数据持久化操作 } } 细节注意：
当前开源项目只实现了拖拽特效,拖拽完成退出应用之后并没有实现数据持久化功能,如需要进行数据的持久化,需要监听返回按钮在else方法实现数据持久化操作。
public class CheeseDynamicAdapter extends BaseDynamicGridAdapter{public CheeseDynamicAdapter(Context context, List<?> items, int columnCount){super(context, items, columnCount)} @Override public View getView(int position, View convertView, ViewGroup parent){CheeseViewHolder holder; if (convertView == null){convertView = LayoutInflater.from(getContext()).inflate(R.layout.item_grid, null); holder = new CheeseViewHolder(convertView); convertView.setTag(holder)} else{holder = (CheeseViewHolder) convertView.getTag()} holder.build(getItem(position).toString()); return convertView} private class CheeseViewHolder{private TextView titleText; private ImageView image; private CheeseViewHolder(View view){titleText = (TextView) view.findViewById(R.id.item_title); image = (ImageView) view.findViewById(R.id.item_img)} void build(String title){titleText.setText(title); image.setImageResource(R.mipmap.ic_launcher)} }} 细节注意：
必须继承BaseDynamicGridAdapter。
详细的使用方法在DEMO里面都演示啦,如果你觉得这个库还不错,请赏我一颗star吧~~~
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