Android Menu

Android - Menu

1.ContextMenu

上下文菜單，就是長按某個view後彈出菜單。關聯的是View。

效果圖：

1.1選項菜單Menu

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <group android:checkableBehavior="none">
        <item android:id="@+id/item_context_item1" android:title="Item1"/>
        <item android:id="@+id/item_context_item2" android:title="Item2"/>
        <item android:id="@+id/item_context_item3" android:title="Item3"/>
    </group>
</menu>

1.2 爲View註冊上下文菜單

registerForContextMenu(view);

1.3建立Menu

@Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {

        MenuInflater inflator=new MenuInflater(this);
        inflator.inflate(R.menu.menu_context,menu);

        super.onCreateContextMenu(menu, v, menuInfo);
    }

1.4 Item 點擊事件

@Override
    public boolean onContextItemSelected(MenuItem item) {

        switch (item.getItemId()){
            case R.id.item_context_item1:
                toast("Item1");
                break;
             ....
        }
        return super.onContextItemSelected(item);
    }

1.5 ListView 註冊 ContextMenu

registerForContextMenu(lv)

經過 AdapterContextMenuInfo 來獲取是點擊Item 的 Position

@Override
public boolean onContextItemSelected(MenuItem item) {

    AdapterView.AdapterContextMenuInfo menuInfo = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
      Toast.makeText(this, "menuInfo.position:" + menuInfo.position, Toast.LENGTH_SHORT).show();
    return super.onContextItemSelected(item);
}

2.PopupMenu

// Show Popup Menu
void showPopupMenu(Context mContext,View view){

    // 爲View指定 PopupMenu
    PopupMenu pm=new PopupMenu(mContext,view);
    // 指定 Menu 文件
    pm.getMenuInflater().inflate(R.menu.menu_test,pm.getMenu());
    //Item 點擊事件
    pm.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            toast(item.getTitle());
            return true;
        }
    });
    pm.show(); //顯示
}