最火Android开源项目DynamicGridView使用

来源：互联网发布：mac重装系统教程编辑：程序博客网时间：2024/06/07 03:37

开源项目地址:https://github.com/open-android/DynamicGridView

运行效果

这里写图片描述

使用步骤

1. 在project的build.gradle添加如下代码(如下图)

allprojects {    repositories {        ...        maven { url "https://jitpack.io" }    }}

2. 在Module的build.gradle添加依赖

compile 'com.github.open-android:DynamicGridView:0.1.0'

3. 复制如下代码到xml

<org.askerov.dynamicgrid.DynamicGridView      android:id="@+id/dynamic_grid"      android:layout_height="wrap_content"      android:layout_width="match_parent"      android:numColumns="@integer/column_count"      />

4. 复制如下代码到Activity

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。

5. 复制如下代码到Adapter

public class CheeseDynamicAdapter extends BaseDynamicGridAdapter {public CheeseDynamicAdapter(Context context, List<?> items, int columnCount) {    super(context, items, columnCount);}@Overridepublic 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。

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