改变MenuItem默认背景
@Overridepublic boolean onCreateOptionsMenu(Menu menu) {setMenuBackground();return super.onCreateOptionsMenu(menu);}protected void setMenuBackground() {MenuDemo.this.getLayoutInflater().setFactory(new android.view.LayoutInflater.Factory() {@Overridepublic View onCreateView(String name, Context context,AttributeSet attrs) {// 指定自定义inflate的对象if (name.equalsIgnoreCase("com.android.internal.view.menu.IconMenuItemView")|| name.equalsIgnoreCase("com.android.internal.view.menu.ListMenuItemView")) {try {LayoutInflater f = getLayoutInflater();final View view = f.createView(name, null,attrs);new Handler().post(new Runnable() {public void run() {// 设置背景图片view.setBackgroundResource(R.drawable.upcorners_shape);}});return view;} catch (InflateException e) {e.printStackTrace();} catch (ClassNotFoundException e) {e.printStackTrace();}}return null;}});}?改变menu的颜色? 在有些真机上试了，不行，不知道什么原因