我可以改变一个菜单项的背景颜色在安卓?

如果有人对此有任何解决方案,请让我知道。最后一个选项显然是自定义,但是否有任何方法可以在不自定义的情况下更改文本颜色。


当前回答

感谢您提供的代码示例。 我不得不修改它,让它与上下文菜单一起工作。 这就是我的解。

    static final Class<?>[] constructorSignature = new Class[] {Context.class, AttributeSet.class};

class MenuColorFix implements LayoutInflater.Factory {
    public View onCreateView(String name, Context context, AttributeSet attrs) {
        if (name.equalsIgnoreCase("com.android.internal.view.menu.ListMenuItemView")) {
            try {
                Class<? extends ViewGroup> clazz = context.getClassLoader().loadClass(name).asSubclass(ViewGroup.class);
                Constructor<? extends ViewGroup> constructor = clazz.getConstructor(constructorSignature);
                final ViewGroup view = constructor.newInstance(new Object[]{context,attrs});

                new Handler().post(new Runnable() {
                    public void run() {
                        try {
                            view.setBackgroundColor(Color.BLACK);
                            List<View> children = getAllChildren(view);
                            for(int i = 0; i< children.size(); i++) {
                                View child = children.get(i);
                                if ( child instanceof TextView ) {
                                    ((TextView)child).setTextColor(Color.WHITE);
                                }
                            }
                        }
                        catch (Exception e) {
                            Log.i(TAG, "Caught Exception!",e);
                        }

                    }
                });
                return view;
            }
            catch (Exception e) {
                Log.i(TAG, "Caught Exception!",e);
            }
        }
        return null;
    }       
}

public List<View> getAllChildren(ViewGroup vg) {
    ArrayList<View> result = new ArrayList<View>();
    for ( int i = 0; i < vg.getChildCount(); i++ ) {
        View child = vg.getChildAt(i);
        if ( child instanceof ViewGroup) {
            result.addAll(getAllChildren((ViewGroup)child));
        }
        else {
            result.add(child);
        }
    }
    return result;
}

@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    LayoutInflater lInflater = getLayoutInflater();
    if ( lInflater.getFactory() == null ) {
        lInflater.setFactory(new MenuColorFix());
    }
    super.onCreateContextMenu(menu, v, menuInfo);
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.myMenu, menu);
}

对我来说,这适用于Android 1.6、2.03和4.03。

其他回答

我使用的是材质设计,当工具栏在一个小屏幕上时,点击更多选项会显示一个空白的白色下拉框。为了解决这个问题,我想在主AppTheme中添加了这个:

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
    <item name="android:itemTextAppearance">@style/menuItem</item>
</style>

然后创建了一个样式,你可以将菜单项的textColor设置为你想要的颜色。

<style name="menuItem" parent="Widget.AppCompat.TextView.SpinnerItem">
    <item name="android:textColor">@color/black</item>
</style>

父名称widget。appcompat . textview . spinneritem我不认为这太重要,它应该仍然工作。

只要去 值-样式和内部样式和类型 你的颜色

Options menu in android can be customized to set the background or change the text appearance. The background and text color in the menu couldn’t be changed using themes and styles. The android source code (data\res\layout\icon_menu_item_layout.xml)uses a custom item of class “com.android.internal.view.menu.IconMenuItem”View for the menu layout. We can make changes in the above class to customize the menu. To achieve the same, use LayoutInflater factory class and set the background and text color for the view.


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.my_menu, menu);
    getLayoutInflater().setFactory(new Factory() {
        @Override
        public View onCreateView(String name, Context context, AttributeSet attrs) {
            if (name .equalsIgnoreCase(“com.android.internal.view.menu.IconMenuItemView”)) {
                try{
                    LayoutInflater f = getLayoutInflater();
                    final View view = f.createView(name, null, attrs);
                    new Handler().post(new Runnable() {
                        public void run() {
                            // set the background drawable
                            view .setBackgroundResource(R.drawable.my_ac_menu_background);

                            // set the text color
                            ((TextView) view).setTextColor(Color.WHITE);
                        }
                    });
                    return view;
                } catch (InflateException e) {
                    } catch (ClassNotFoundException e) {}
            }
            return null;
        }
    });
    return super.onCreateOptionsMenu(menu);
}


简短的回答是肯定的。幸运的你! 要做到这一点,你需要覆盖Android默认样式的一些样式:

首先,看看Android中主题的定义:

<style name="Theme.IconMenu">
<!-- Menu/item attributes -->
<item name="android:itemTextAppearance">@android:style/TextAppearance.Widget.IconMenu.Item</item>
<item name="android:itemBackground">@android:drawable/menu_selector</item>
<item name="android:itemIconDisabledAlpha">?android:attr/disabledAlpha</item>
<item name="android:horizontalDivider">@android:drawable/divider_horizontal_bright</item>
<item name="android:verticalDivider">@android:drawable/divider_vertical_bright</item>
<item name="android:windowAnimationStyle">@android:style/Animation.OptionsPanel</item>
<item name="android:moreIcon">@android:drawable/ic_menu_more</item>
<item name="android:background">@null</item>
</style>

因此,菜单中文本的外观在@android:style/ textappearance . widget。iconmenu . item中 现在,在样式的定义中:

<style name="TextAppearance.Widget.IconMenu.Item" parent="TextAppearance.Small">
<item name="android:textColor">?textColorPrimaryInverse</item>
</style>

现在我们有了问题中的颜色名称,如果你查看系统资源的颜色文件夹:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false" android:color="@android:color/bright_foreground_light_disabled" /> 
<item android:state_window_focused="false" android:color="@android:color/bright_foreground_light" /> 
<item android:state_pressed="true" android:color="@android:color/bright_foreground_light" /> 
<item android:state_selected="true" android:color="@android:color/bright_foreground_light" /> 
<item android:color="@android:color/bright_foreground_light" /> 
<!--  not selected --> 
</selector>

最后,以下是你需要做的事情:

TextAppearance.Widget.IconMenu覆盖”。项目”,创造自己的风格。然后将它链接到您自己的选择器,使其成为您想要的方式。 希望这对你有所帮助。 好运!

多亏了麦克斯。mussterman,这是我在第22关的解决方案:

public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_main, menu);
    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    MenuItem searchMenuItem = menu.findItem(R.id.search);
    SearchView searchView = (SearchView) searchMenuItem.getActionView();
    searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
    searchView.setSubmitButtonEnabled(true);
    searchView.setOnQueryTextListener(this);
    setMenuTextColor(menu, R.id.displaySummary, R.string.show_summary);
    setMenuTextColor(menu, R.id.about, R.string.text_about);
    setMenuTextColor(menu, R.id.importExport, R.string.import_export);
    setMenuTextColor(menu, R.id.preferences, R.string.settings);
    return true;
}

private void setMenuTextColor(Menu menu, int menuResource, int menuTextResource) {
    MenuItem item = menu.findItem(menuResource);
    SpannableString s = new SpannableString(getString(menuTextResource));
    s.setSpan(new ForegroundColorSpan(Color.BLACK), 0, s.length(), 0);
    item.setTitle(s);
}

硬编码的颜色。BLACK可以成为setMenuTextColor方法的附加参数。此外,我只使用这个菜单项是android:showAsAction="never"。