Question

当我创建选项菜单时，项目似乎默认为本机“sans”字体。当我看商业应用程序时，他们似乎大多数都做同样的事情。是否可以为选项菜单项设置字体大小，颜色权重或字体？

提前致谢。

Answer 1

您可以自定义选项菜单，包括：

添加自定义字体
更改字体大小
更改字体颜色
将背景设置为可绘制资源（例如图像，边框，渐变）

要将背景更改为边框或渐变，您必须在名为res的{{1}}中创建资源文件夹，并在其中创建边框XML或渐变XML。

这可以通过编程方式完成，如下所示：

drawable

不要忘记在public class CustomMenu extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } public boolean onCreateOptionsMenu(android.view.Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.cool_menu, menu); getLayoutInflater().setFactory(new Factory() { public View onCreateView(String name, Context context, AttributeSet attrs) { if (name.equalsIgnoreCase( "com.android.internal.view.menu.IconMenuItemView")) { try { LayoutInflater li = LayoutInflater.from(context); final View view = li.createView(name, null, attrs); new Handler().post(new Runnable() { public void run() { // set the background drawable if you want that //or keep it default -- either an image, border //gradient, drawable, etc. view.setBackgroundResource(R.drawable.myimage); ((TextView) view).setTextSize(20); // set the text color Typeface face = Typeface.createFromAsset( getAssets(),"OldeEnglish.ttf"); ((TextView) view).setTypeface(face); ((TextView) view).setTextColor(Color.RED); } }); return view; } catch (InflateException e) { //Handle any inflation exception here } catch (ClassNotFoundException e) { //Handle any ClassNotFoundException here } } return null; } }); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.AboutUs: Intent i = new Intent("com.test.demo.ABOUT"); startActivity(i); break; case R.id.preferences: Intent p = new Intent("com.test.demo.PREFS"); startActivity(p); break; case R.id.exit: finish(); break; } return false; } }文件夹中创建名为menu的文件夹，并在res文件夹中为您的菜单创建一个XML（例如 cool_menu.xml ）比如：

menu

然后输出将是这样的：

enter image description here

Answer 2

@Android Stack，当我读到你的答案时，我开始恐慌地认为我必须使用“工厂”。

我搜索了一下，我了解到你可以使用菜单项的自定义视图。只需在菜单项上调用setActionView即可。

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);

    // Inflate the menu items for use in the action bar
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.my_menu, menu);

    // Get the root inflator. 
    LayoutInflater baseInflater = (LayoutInflater)getBaseContext()
           .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    // Inflate your custom view.
    View myCustomView = baseInflater.inflate(R.layout.my_custom_view, null);
    menu.findItem(R.id.my_custom_menu_icon).setActionView(myCustomView);


    // If myCustomView has additional children, you might have to inflate them separately here.
    // In my case, I used buttons in my custom view, and registered onClick listeners at this point.

 }

my_custom_view的实现可以是您想要的任何视图（尽管可能必须以LinearLayout作为根元素）。例如，您可以使用@ R4j在其答案中提出的TextView + ImageView布局。

在我的用例中，我只是将Button个对象放入菜单中，然后依靠按钮的onButtonClick处理程序来响应事件 - 有效地支持处理它们的需要在包含菜单的活动中。

（很棒的问题，顺便说一下。谢谢！）

Answer 3

测试并像魅力一样工作：）

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu_feedback_filter, menu);

    for (int i = 0; i < menu.size(); i++) {
        MenuItem mi = menu.getItem(i);
        //for aapplying a font to subMenu ...
        SubMenu subMenu = mi.getSubMenu();
        if (subMenu != null && subMenu.size() > 0) {
            for (int j = 0; j < subMenu.size(); j++) {
                MenuItem subMenuItem = subMenu.getItem(j);
                applyFontToMenuItem(subMenuItem, typeface);
            }
        }
        //the method we have create in activity
        applyFontToMenuItem(mi, typeface);
    }

    return super.onCreateOptionsMenu(menu);
}



private void applyFontToMenuItem(MenuItem mi, Typeface font) {
    SpannableString mNewTitle = new SpannableString(mi.getTitle());
    mNewTitle.setSpan(new CustomTypefaceSpan("", font), 0, mNewTitle.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
    mi.setTitle(mNewTitle);
}

自定义范围类

import android.graphics.Paint;
import android.graphics.Typeface;
import android.text.TextPaint;
import android.text.style.TypefaceSpan;

public class CustomTypefaceSpan extends TypefaceSpan {

    private final Typeface newType;

    public CustomTypefaceSpan(String family, Typeface type) {
        super(family);
        newType = type;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        applyCustomTypeFace(ds, newType);
    }

    @Override
    public void updateMeasureState(TextPaint paint) {
        applyCustomTypeFace(paint, newType);
    }

    private static void applyCustomTypeFace(Paint paint, Typeface tf) {
        int oldStyle;
        Typeface old = paint.getTypeface();
        if (old == null) {
            oldStyle = 0;
        } else {
            oldStyle = old.getStyle();
        }

        int fake = oldStyle & ~tf.getStyle();
        if ((fake & Typeface.BOLD) != 0) {
            paint.setFakeBoldText(true);
        }

        if ((fake & Typeface.ITALIC) != 0) {
            paint.setTextSkewX(-0.25f);
        }

        paint.setTypeface(tf);
    }
}

Answer 4

而不是使用菜单的XML资源，使用menu.add将其从代码中膨胀，并使用新的SpannableString（）来分配自定义字体。

以下是适用于Android 4.x的示例：

@Override
public void onCreateContextMenu(ContextMenu menu, View v,
                                ContextMenu.ContextMenuInfo menuInfo) {
    ...
    menu.add(Menu.NONE,1234,1,wrapInSpan(getResources().getString(R.string.item_title)))
        .setTitleCondensed(getResources().getString(R.string.item_title));
    ...
}

private CharSequence wrapInSpan(CharSequence value) {
    SpannableStringBuilder sb = new SpannableStringBuilder(value);
    sb.setSpan(MY_TYPEFACE, 0, value.length(), 0);
    return sb;
}

需要setTitleCondensed(...)来解决android API中的错误：当选择菜单项时，会记录事件并使用titleCondensed来编写日志。如果未定义titleCondensed，则只要格式化要记录的字符串，就会使用title和EventLog.writeEvent崩溃。

所以在consendedTitle变通方法中传递一个非格式化的CharSequence。

Answer 5

上述答案都不适合我。我通过以下解决方案实现了这一目标：

public boolean onPrepareOptionsMenu(Menu menu)
    {
        MenuItem item = menu.findItem(R.id.menu_name);
        item.setTitle(someTextToDisplayOnMenu);
        SpannableString spanString = new SpannableString(item.getTitle().toString());
        spanString.setSpan(new TextAppearanceSpan(context,android.R.style.TextAppearance_Medium), 0,spanString.length(), 0);
        spanString.setSpan(new ForegroundColorSpan(Color.WHITE), 0, spanString.length(), 0); //fix the color to white
        item.setTitle(spanString);
        return true;
    }

Answer 6

我认为Android不支持选项菜单的自定义。但你可以尝试另一种方式：http://www.codeproject.com/Articles/173121/Android-Menus-My-Way
这样，实际上菜单项是textview和imageview，所以你可以轻松改变字体，颜色......

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center"
android:padding="4dip"
android:clickable="true"
android:background="@drawable/custom_menu_selector">
<ImageView
    android:id="@+id/custom_menu_item_icon"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:paddingBottom="2dip"
    android:paddingTop="2dip"/>
<TextView
    android:id="@+id/custom_menu_item_caption"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textColor="#ffffff"
    android:textSize="12sp"
    android:gravity="center"/>

Answer 7

我找到的唯一解决方案是创建一个自定义对话框，当您按下菜单按钮时会出现该对话框。布局就像那样：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Mi cuenta"
        android:id="@+id/buttonMyAccount" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Ayuda"
        android:id="@+id/buttonHelp" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Contacto"
        android:id="@+id/buttonContact" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Acerca de"
        android:id="@+id/buttonAbout" />
</LinearLayout>

之后，在Activity类中，在'OnOptionsItemSelected'方法中，我编写以下代码：

@Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {

            case R.id.action_settings:
            Dialog dialog = new Dialog(this);
            dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
            dialog.setContentView(R.layout.options_menu);
            dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));

            dialog.show();


            Button buttonMyAccount = (Button) dialog.findViewById(R.id.buttonMyAccount);
            Typeface font = Typeface.createFromAsset(this.getAssets(), "SamsungIF_Rg.ttf");
            buttonMyAccount.setTypeface(font);
            buttonMyAccount.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent itMyAccount = new Intent(getBaseContext(), AccountActivity.class);
                    startActivity(itMyAccount);
                }
            });


            Button buttonHelp = (Button) dialog.findViewById(R.id.buttonHelp);
            buttonHelp.setTypeface(font);
            buttonHelp.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent itAssistant = new Intent(getBaseContext(), AssistantPagerActivity.class);
                    startActivity(itAssistant);
                }
            });


            Button buttonContact = (Button) dialog.findViewById(R.id.buttonContact);
            buttonContact.setTypeface(font);
            buttonContact.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent itContact = new Intent(getBaseContext(), ContactActivity.class);
                    startActivity(itContact);
                }
            });

            Button buttonAbout = (Button) dialog.findViewById(R.id.buttonAbout);
            buttonAbout.setTypeface(font);
            buttonAbout.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent itAbout = new Intent(getBaseContext(), AboutActivity.class);
                    startActivity(itAbout);
                }
            });


            Window window = dialog.getWindow();
            WindowManager.LayoutParams wlp = window.getAttributes();
            wlp.gravity = Gravity.RIGHT | Gravity.TOP;
            wlp.y = getSupportActionBar().getHeight();
            wlp.width = 300;
            wlp.flags &= ~WindowManager.LayoutParams.FLAG_DIM_BEHIND;
            window.setAttributes(wlp);


            return true;

        default:
            return super.onOptionsItemSelected(item);

    }
}

如何为“选项”菜单设置字体？

7 个答案: