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
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);
}
其他回答
只需将此添加到您的主题
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:itemTextAppearance">@style/AppTheme.ItemTextStyle</item>
</style>
<style name="AppTheme.ItemTextStyle" parent="@android:style/TextAppearance.Widget.IconMenu.Item">
<item name="android:textColor">@color/orange_500</item>
</style>
API 21测试
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！
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);
}
这是你如何用颜色给一个特定的菜单项上色，适用于所有API级别:
public static void setToolbarMenuItemTextColor(final Toolbar toolbar,
final @ColorRes int color,
@IdRes final int resId) {
if (toolbar != null) {
for (int i = 0; i < toolbar.getChildCount(); i++) {
final View view = toolbar.getChildAt(i);
if (view instanceof ActionMenuView) {
final ActionMenuView actionMenuView = (ActionMenuView) view;
// view children are accessible only after layout-ing
actionMenuView.post(new Runnable() {
@Override
public void run() {
for (int j = 0; j < actionMenuView.getChildCount(); j++) {
final View innerView = actionMenuView.getChildAt(j);
if (innerView instanceof ActionMenuItemView) {
final ActionMenuItemView itemView = (ActionMenuItemView) innerView;
if (resId == itemView.getId()) {
itemView.setTextColor(ContextCompat.getColor(toolbar.getContext(), color));
}
}
}
}
});
}
}
}
}
通过这样做，你会失去背景选择器的效果，所以下面的代码将一个自定义的背景选择器应用到所有菜单项的子项上。
public static void setToolbarMenuItemsBackgroundSelector(final Context context,
final Toolbar toolbar) {
if (toolbar != null) {
for (int i = 0; i < toolbar.getChildCount(); i++) {
final View view = toolbar.getChildAt(i);
if (view instanceof ImageButton) {
// left toolbar icon (navigation, hamburger, ...)
UiHelper.setViewBackgroundSelector(context, view);
} else if (view instanceof ActionMenuView) {
final ActionMenuView actionMenuView = (ActionMenuView) view;
// view children are accessible only after layout-ing
actionMenuView.post(new Runnable() {
@Override
public void run() {
for (int j = 0; j < actionMenuView.getChildCount(); j++) {
final View innerView = actionMenuView.getChildAt(j);
if (innerView instanceof ActionMenuItemView) {
// text item views
final ActionMenuItemView itemView = (ActionMenuItemView) innerView;
UiHelper.setViewBackgroundSelector(context, itemView);
// icon item views
for (int k = 0; k < itemView.getCompoundDrawables().length; k++) {
if (itemView.getCompoundDrawables()[k] != null) {
UiHelper.setViewBackgroundSelector(context, itemView);
}
}
}
}
}
});
}
}
}
}
下面是helper函数:
public static void setViewBackgroundSelector(@NonNull Context context, @NonNull View itemView) {
int[] attrs = new int[]{R.attr.selectableItemBackgroundBorderless};
TypedArray ta = context.obtainStyledAttributes(attrs);
Drawable drawable = ta.getDrawable(0);
ta.recycle();
ViewCompat.setBackground(itemView, drawable);
}
当菜单项膨胀时，我使用html标记来更改单个项目的文本颜色。希望对大家有所帮助。
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
menu.findItem(R.id.main_settings).setTitle(Html.fromHtml("<font color='#ff3824'>Settings</font>"));
return true;
}
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