Question

我试图将菜单项的字体更改为自定义字体。在我的操作栏中有一个带有几个选项的下拉菜单。当我选择一个这些选项时，操作栏中项目的标题将更改为此选项文本，它将应用该字体。这是因为我在覆盖的'onOptionItemSelected（MenuItem item）＆＃39;中应用了te字体。我真的希望在创建菜单时应用字体（它现在使用默认字体）。所以我试图在＆＃39; onCreateOptionsMenu（菜单菜单）＆＃39;中执行此操作，但它一直给我一个错误（空指针异常）。我甚至尝试了多种重写方法，但似乎没有任何效果。如何在创建菜单项时将自定义字体应用于菜单项？这是我的代码：

        @Override
        public boolean onCreateOptionsMenu(Menu menu){
            Log.d("GraphActivity", "onCreateOptionsMenu");
            MenuInflater inflater = getMenuInflater();
            inflater.inflate(R.menu.menu_graph, menu);
            optionMenu = menu;
            Boolean dayMatch = User.getInstance().getDownloadedDay() == User.getInstance().getCurrentDay();
            Boolean monthMatch = User.getInstance().getDownloadedMonth() == User.getInstance().getCurrentMonth();
             Boolean yearMatch = User.getInstance().getDownloadedYear() == User.getInstance().getCurrentYear();
            if(! dayMatch || ! monthMatch || ! yearMatch){
                FeedbackManager feedbackManager = new FeedbackManager();
                feedbackManager.showToast("file is out of date", GraphActivity.this, Toast.LENGTH_SHORT);
                optionMenu.findItem(R.id.action_refresh).setIcon(R.drawable.ic_action_refreshed);
            }
            return true;
        }

        @Override
        public boolean onMenuOpened(int featureId, Menu menu){
            Typeface typeface = Typeface.createFromAsset(getAssets(), "TitilliumWeb-Regular.ttf");
            menuItemView = (TextView)findViewById(R.id.action_select);
            menuItemView.setTypeface(typeface);
            return super.onMenuOpened(featureId, menu);
        }

        @Override
        public boolean onCreatePanelMenu(int featureId, Menu menu)
        {
            Typeface typeface = Typeface.createFromAsset(getAssets(), "TitilliumWeb-Regular.ttf");
            menuItemView = (TextView)findViewById(R.id.action_select);
            menuItemView.setTypeface(typeface);
            return super.onCreatePanelMenu(featureId, menu);
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item){
            Log.d("GraphActivity", "onOptionsItemSelected");
            Typeface typeface = Typeface.createFromAsset(getAssets(), "TitilliumWeb-Regular.ttf");
            menuItemView = (TextView)findViewById(R.id.action_select);
            menuItemView.setTypeface(typeface);
            int id = item.getItemId();
            if(id == R.id.action_settings){
                Intent intent = new Intent(GraphActivity.this, SettingsActivity.class);
                startActivity(intent);
            }else if(id == R.id.action_refresh){
                if(itemClickable){
                    TaskManager taskManager = new TaskManager(GraphActivity.this, progressBar);
                    taskManager.runTask("online");
                }
            }else if(id == R.id.action_current){
                graphManager.setSelect(GraphManager.select_current);
                String title = optionMenu.findItem(R.id.action_current).getTitle().toString();
                optionMenu.findItem(R.id.action_select).setTitle(title);
                setSelectable(WEEK_button);
                setSelectable(MONTH_button);
                setClickable(YEAR_button);
                graph();
            }else if(id == R.id.action_previous){
                graphManager.setSelect(GraphManager.select_previous);
                String title = optionMenu.findItem(R.id.action_previous).getTitle().toString();
                optionMenu.findItem(R.id.action_select).setTitle(title);
                setSelectable(WEEK_button);
                setSelectable(MONTH_button);
                setClickable(YEAR_button);
                graph();
            }else if(id == R.id.action_compare){
                graphManager.setSelect(GraphManager.select_compare);
                graphManager.setPeriod(GraphManager.period_year);
                String title = optionMenu.findItem(R.id.action_compare).getTitle().toString();
                optionMenu.findItem(R.id.action_select).setTitle(title);
                setNonSelectable(WEEK_button);
                setNonSelectable(MONTH_button);
                setHighLight(YEAR_button);
                setNotClickable(YEAR_button);
                graph();
            }
            return super.onOptionsItemSelected(item);
        }

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

Android更改字体菜单项

1 个答案: