Android仿QQ长按删除弹出框

        废话不说，先看一下效果图：

        对于列表来说，如果想操作某个列表项，一般会采用长按弹出菜单的形式，默认的上下文菜单比较难看，而QQ的上下文菜单就人性化多了，整个菜单给用户一种气泡弹出的感觉，而且会显示在手指按下的位置，而技术实现我之前是使用popupWindow和RecyclerView实现的，上面一个RecyclerView，下面一个小箭头ImageView，但后来发现没有必要，而且可定制化也不高，还是使用多个TextView更好一点。

        我封装了一下，只需要一个PopupList.java文件。源码放在了git上，git地址：https://github.com/shangmingchao/PopupList

        使用方式，很简单：

        只需要一个PopupList.java文件和几行代码，你就可以为ListView，GridView，甚至任意View绑定一个长按弹出的水平气泡式菜单。
你可以这样使用：

public class MainActivity extends AppCompatActivity {


    private Button btn_long_click;
    private ListView lv_main;
    private List<String> mDataList = new ArrayList<>();
    private ArrayAdapter<String> mDataAdapter;
    private List<String> popupMenuItemList = new ArrayList<>();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_long_click = (Button) findViewById(R.id.btn_long_click);
        lv_main = (ListView) findViewById(R.id.lv_main);
        mDataAdapter = new ArrayAdapter<>(this, android.R.layout.simple_expandable_list_item_1, mDataList);
        lv_main.setAdapter(mDataAdapter);


        popupMenuItemList.add(getString(R.string.copy));
        popupMenuItemList.add(getString(R.string.delete));
        popupMenuItemList.add(getString(R.string.share));
        popupMenuItemList.add(getString(R.string.more));
        PopupList popupList = new PopupList(this);
        popupList.bind(lv_main, popupMenuItemList, new PopupList.PopupListListener() {
            @Override
            public boolean showPopupList(View adapterView, View contextView, int contextPosition) {
                return true;
            }


            @Override
            public void onPopupListClick(View contextView, int contextPosition, int position) {
                Toast.makeText(MainActivity.this, contextPosition + "," + position, Toast.LENGTH_SHORT).show();
            }
        });


        PopupList normalViewPopupList = new PopupList(this);
        normalViewPopupList.bind(btn_long_click, popupMenuItemList, new PopupList.PopupListListener() {
            @Override
            public boolean showPopupList(View adapterView, View contextView, int contextPosition) {
                return true;
            }


            @Override
            public void onPopupListClick(View contextView, int contextPosition, int position) {
                Toast.makeText(MainActivity.this, contextPosition + "," + position, Toast.LENGTH_SHORT).show();
            }
        });


        lv_main.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(MainActivity.this, "onItemClicked:" + position, Toast.LENGTH_SHORT).show();
            }
        });
        btn_long_click.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(MainActivity.this, SecondaryActivity.class));
            }
        });
        getData();
    }


    private void getData() {
        for (int i = 0; i < 40; i++) {
            mDataList.add("No." + i);
        }
        mDataAdapter.notifyDataSetChanged();
    }


}

注意：`bind()`方法要求你的anchorView不能有touch和longClick/itemLongClick监听，因为`bind()`方法会主动给anchorView设置监听器：

    mAnchorView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            mRawX = event.getRawX();
            mRawY = event.getRawY();
            return false;
        }
    });
    if (mAnchorView instanceof AbsListView) {
        ((AbsListView) mAnchorView).setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                if (mPopupListListener != null
                        && !mPopupListListener.showPopupList(parent, view, position)) {
                    return false;
                }
                mAdapterView = parent;
                mContextView = view;
                mContextPosition = position;
                showPopupListWindow();
                return true;
            }
        });
    } else {
        mAnchorView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                if (mPopupListListener != null
                        && !mPopupListListener.showPopupList(v, v, 0)) {
                    return false;
                }
                mContextView = v;
                mContextPosition = 0;
                showPopupListWindow();
                return true;
            }
        });
    }

这就限制了anchorView不能再添加touch监听，不能添加longClick监听，如果你需要添加监听可以使用`showPopupListWindow`方法主动来显示弹出框，而不是使用`bind()`方法： 

public class SecondaryActivity extends AppCompatActivity {


    private ListView lv_main;
    private List<String> mDataList = new ArrayList<>();
    private ArrayAdapter<String> mDataAdapter;
    private List<String> popupMenuItemList = new ArrayList<>();
    private float mRawX;
    private float mRawY;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_secondary);
        lv_main = (ListView) findViewById(R.id.lv_main);
        mDataAdapter = new ArrayAdapter<>(this, android.R.layout.simple_expandable_list_item_1, mDataList);
        lv_main.setAdapter(mDataAdapter);


        popupMenuItemList.add(getString(R.string.copy));
        popupMenuItemList.add(getString(R.string.delete));
        popupMenuItemList.add(getString(R.string.share));
        popupMenuItemList.add(getString(R.string.more));


        lv_main.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                mRawX = event.getRawX();
                mRawY = event.getRawY();
                return false;
            }
        });
        lv_main.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(SecondaryActivity.this, "onItemClicked:" + position, Toast.LENGTH_SHORT).show();
            }
        });
        lv_main.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                PopupList popupList = new PopupList(view.getContext());
                popupList.showPopupListWindow(view, position, mRawX, mRawY, popupMenuItemList, new PopupList.PopupListListener() {
                    @Override
                    public boolean showPopupList(View adapterView, View contextView, int contextPosition) {
                        return true;
                    }


                    @Override
                    public void onPopupListClick(View contextView, int contextPosition, int position) {
                        Toast.makeText(contextView.getContext(), contextPosition + "," + position, Toast.LENGTH_SHORT).show();
                    }
                });
                return true;
            }
        });
        getData();
    }


    private void getData() {
        for (int i = 0; i < 40; i++) {
            mDataList.add("No." + i);
        }
        mDataAdapter.notifyDataSetChanged();
    }


}

更详细的配置：

• popupList.setIndicatorView(View)
• popupList.setIndicatorSize(int, int)
• popupList.setNormalBackgroundColor(int)
• popupList.setPressedBackgroundColor(int)
• popupList.setNormalTextColor(int)
• popupList.setPressedTextColor(int)
• popupList.setDividerColor(int)
• popupList.setTextSize(float)
• popupList.setTextPadding(int, int, int, int)
• popupList.setTextPaddingLeft(int)
• popupList.setTextPaddingTop(int)
• popupList.setTextPaddingRight(int)
• popupList.setTextPaddingBottom(int)
• popupList.setBackgroundCornerRadius(int)
• popupList.setDividerWidth(int)
• popupList.setDividerHeight(int)