Question

我想要实现的目标：

我有一个自定义ListView适配器。对于每个Listitem，我想添加一个弹出菜单，非常类似于当前Google Play应用程序中的ListView。

Screenshot of Google Play items

这是我试过的：我的大多数代码都来自这个Android示例 samples \ android-19 \ ui \ ActionBarCompat-ListPopupMenu

CustomFragmentPageAdapter.java ：

// create new fragment
mCustomFragment = CustomFragment.newInstance(position);

CustomFragment.java

public class CustomFragment extends ListFragment implements View.OnClickListener{

...

@Override
public void onClick(final View v) {
    v.post(new Runnable() {
        @Override
        public void run() {
            showPopupMenu(v);
        }
    });
}

private void showPopupMenu(View view) {

    PopupMenu popup = new PopupMenu(getActivity(), view);

    popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu());

    popup.show();
}

CustomArrayAdapter ：

public class CustomAdapter extends ArrayAdapter<WatchListPlayerItem> {
    ...    
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final int pos = position;

        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        final View rowView = inflater.inflate(R.layout.watch_list_row, parent, false);

        View popupButton = rowView.findViewById(R.id.imgPopUp);

        popupButton.setTag(getItem(position));

        popupButton.setOnClickListener(mFragment);

        return rowView;
    }
}

popup_menu.xml ：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/install"
        android:title="Install" />
    <item
        android:id="@+id/addtowishlist"
        android:title="Add to wishlist" />
</menu>

Logcat输出：

java.lang.RuntimeException: Failed to resolve attribute at index 6
            at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:603)
            at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:6423)
            at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:6591)
            at android.widget.FrameLayout$LayoutParams.<init>(FrameLayout.java:735)
...

我的CustomFragment中的popup.show（）抛出错误。

这个错误显然让我发疯，任何帮助解决这个问题都非常感谢！

Answer 1

我终于找到了我的问题的解决方案，尽管我没有解释为什么这个解决方案有效。

通过以下导入，我总是遇到错误：

import android.support.v7.widget.PopupMenu;

使用以下导入工作正常：

import android.widget.PopupMenu;

我测试了Ric提供的代码（感谢您的帮助！）和我自己的代码。两者现在都在运作。也许有人解释为什么导入在这种情况下很重要。

Answer 2

首先在 custom-item-listview.xml 中创建button，然后添加以下代码：

Button：

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button_text"
android:id="@+id/button1"
... />

类：

public class CustomAdapter extends ArrayAdapter<CustomItem> {

    private static Activity context = null;
    private final ArrayList<CustomItem> mItemsArrayList;
    private CustomFragment mFragment;


    public CustomAdapter(Activity context, ArrayList<CustomItem> itemsArrayList, CustomFragment fragment) {

        super(context, R.layout.watch_list_row, itemsArrayList);

        CustomAdapter.context = context;
        this.mItemsArrayList = itemsArrayList;
        this.mFragment = fragment;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final int pos = position;
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        final View rowView = inflater.inflate(R.layout.watch_list_row, parent, false);
    final Button popUp_btn = (Button)rowView.findViewById(R.id.button1);
    popUp_btn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            final PopupMenu popup = new PopupMenu(context, popUp_btn);
            popup.getMenuInflater().inflate(R.menu.context_menu, popup.getMenu());
            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                public boolean onMenuItemClick(MenuItem item) {
                    int i = item.getItemId();
                    if (i == R.id.item1) {
                        //do something
                        return true;
                    }
                    else if (i == R.id.item2){
                        //do something
                        return true;
                    }
                    else if (i == R.id.item3) {
                        //do something
                        return true;
                    }
                    else {
                        return onMenuItemClick(item);
                    }
                }
            });

            popup.show();

修改这对我很有用：

TAB1

public class TAB1 extends Fragment { View view; public TAB1() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { view = inflater.inflate(R.layout.tab1, null); ListView list = (ListView) view.findViewById(android.R.id.list); CustomList adapter = new CustomList(getActivity()); adapter.addAll(); list.setAdapter(adapter); return view; }

CustomList：

public class CustomList extends ArrayAdapter<YourArrayAdapter> { private static Activity context = null; public CustomList(Activity context) { super(context, R.layout.custom_listview, web); CustomList.context = context; } @Override public View getView(final int position, View view, ViewGroup parent) { LayoutInflater inflater = context.getLayoutInflater(); final View rowView = inflater.inflate(R.layout.custom_listview, null, true); //your stuff here final Button popUp_btn = (Button)rowView.findViewById(R.id.button1); popUp_btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final PopupMenu popup = new PopupMenu(context, popUp_btn); popup.getMenuInflater().inflate(R.menu.context_menu, popup.getMenu()); popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { public boolean onMenuItemClick(MenuItem item) { int i = item.getItemId(); if (i == R.id.item1) { //do something return true; } else if (i == R.id.item2){ //do something return true; } else if (i == R.id.item3) { //do something return true; } else { return onMenuItemClick(item); } } }); popup.show(); } }); return rowView; }

Answer 3

将此用作（活动上下文）而不是应用程序上下文或上下文

     PopupMenu popup = new PopupMenu(this, v);

Answer 4

    popup = (Button)findViewById(R.id.button);

    popup.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            PopupMenu popup = new PopupMenu(MainActivity.this,view);
            popup.getMenuInflater().inflate(R.menu.popup_menu,popup.getMenu());
            popup.show();
            popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                @Override
                public boolean onMenuItemClick(MenuItem item) {
                    int id = item.getItemId();
                    if(id==R.id.install){
                        show_toast("Install Clicked");
                    }else{
                        show_toast("WishList Clicked");                            
                    }
                    return true;
                }
            });
        }
    });



    public void show_toast(String message){
        Toast.makeText(this,message,Toast.LENGTH_SHORT).show();
    }

注意：
别忘了导入这个....

import android.support.v7.widget.PopupMenu;
import android.view.MenuItem;

Answer 5

只要您导入以下内容，Rick的代码就行得很完美：

import android.widget.PopupMenu;

不是以下那个：

import android.support.v7.widget.PopupMenu;

Answer 6

当我修改主题父样式时，我遇到了同样的问题：从

<style name="MainAppTheme" parent="@style/Theme.AppCompat.Light">

到

<style name="MainAppTheme" parent="@style/Theme.Base.AppCompat.Light">

也许您的应用使用Theme.Base样式，该样式未定义PopupMenu使用的所需第6个参数。从SO问题How to use ActionBarActivity with Theme.Material开始，Theme.AppCompat扩展了Theme.Base.AppCompat

Answer 7

我通过将参数传递给静态活动来修复类似的错误。例如：

static AppCompatActivity sActivity;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    sActivity = this;

yourLayout.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        PopupMenu popup = new PopupMenu(sActivity, v);
        MenuInflater inflater = popup.getMenuInflater();
        inflater.inflate(R.menu.my_popup_menu, popup.getMenu());
        popup.show();
        }
   });
}

此外，您可能遇到的问题是：Issue 152141

希望它能帮助您，尊重android.support.v7.widget.PopupMenu导入。

问候。

自定义ListView中的弹出菜单

7 个答案: