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DragListViewDemo.java
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DragListViewDemo.java
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package com.example.androidsdemo;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.os.Bundle;
import android.view.View;
import com.example.androidsdemo.adapter.PluginListAdapter;
import java.util.ArrayList;
import cn.forward.androids.utils.ViewUtil;
import cn.forward.androids.views.DragListView;
/**
* 可拖拽的ListView
* Created by huangziwei on 16-6-27.
*/
public class DragListViewDemo extends Activity {
private DragListView mListView;
private PluginListAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drag_listview);
init();
mListView.setDragItemListener(new DragListView.SimpleAnimationDragItemListener() {
private Rect mFrame = new Rect();
private boolean mIsSelected;
@Override
public boolean canDrag(View dragView, int x, int y) {
// 获取可拖拽的图标
View dragger = dragView.findViewById(R.id.dl_plugin_move);
if (dragger == null || dragger.getVisibility() != View.VISIBLE) {
return false;
}
float tx = x - ViewUtil.getX(dragView);
float ty = y - ViewUtil.getY(dragView);
dragger.getHitRect(mFrame);
if (mFrame.contains((int) tx, (int) ty)) { // 当点击拖拽图标才可进行拖拽
return true;
}
return false;
}
@Override
public void beforeDrawingCache(View dragView) {
mIsSelected = dragView.isSelected();
View drag = dragView.findViewById(R.id.dl_plugin_move);
dragView.setSelected(true);
if (drag != null) {
drag.setSelected(true);
}
}
@Override
public Bitmap afterDrawingCache(View dragView, Bitmap bitmap) {
dragView.setSelected(mIsSelected);
View drag = dragView.findViewById(R.id.dl_plugin_move);
if (drag != null) {
drag.setSelected(false);
}
return bitmap;
}
@Override
public boolean canExchange(int srcPosition, int position) {
boolean result = mAdapter.exchange(srcPosition, position);
return result;
}
});
// 模拟数据
ArrayList<PluginItem> addedItem = new ArrayList<PluginItem>();
ArrayList<PluginItem> notAddedItem = new ArrayList<PluginItem>();
for (int i = 0; i < 20; i++) {
addedItem.add(new PluginItem("item:" + i));
}
for (int i = 20; i < 30; i++) {
notAddedItem.add(new PluginItem("item:" + i));
}
mAdapter = new PluginListAdapter(this, addedItem, notAddedItem, new OnStateBtnClickListener());
mListView.setAdapter(mAdapter);
}
private void init() {
mListView = (DragListView) findViewById(R.id.draglist);
}
public static class PluginItem {
public String mName;
public PluginItem() {
}
public PluginItem(String name) {
mName = name;
}
}
/**
* 点击已添加/未添加按钮
*/
public class OnStateBtnClickListener implements View.OnClickListener {
@Override
public void onClick(final View v) {
PluginItem item = (PluginItem) v.getTag();
if (item == null) {
return;
}
if (mAdapter.isAdded(item)) { // 已添加
mAdapter.removeItem(item);
} else {
mAdapter.addItem(item);
}
}
}
}