Android 如何完美解決MenuItem偏移問題

 有時系統的MenuItem佈局無法滿足我們自己系統或者應用的需求，怎樣辦呢？

下面我以我的經驗分享給大家，首先你的需求是否可以需要重新佈局，重新佈局後，有時還無法達到自己的效果，就要重新編寫了，其實有時候，我們只需要一點點偏移就可以了，不用那麼麻煩.

下面是具體實現的代碼，以Delete爲例

               private MenuItem mDeleteItem;
        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            MenuInflater inflater = getMenuInflater();
            /// M: Optimize select all performance, restore actionmode status. @{
            mListAdapter.clearstate();
            // M: add for ALPS01988446, dismiss search view.
            mSearchItem.collapseActionView();
            if (mIsNeedRestoreAdapterState) {
                for (int i = 0; i < mListSelectedThreads.length; i++) {
                    mListAdapter.setSelectedState(mListSelectedThreads[i]);
                }
                mIsNeedRestoreAdapterState = false;
            } else {
                Log.d(TAG, "onCreateActionMode: no need to restore adapter state");
            }
            /// @}
            mSelectedThreadIds = new HashSet<Long>();
            inflater.inflate(R.menu.conversation_multi_select_menu_with_selectall, menu);
			final Menu m=menu;
            mDeleteItem = menu.findItem(R.id.delete);
			
			mDeleteItem.getActionView().setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {   

//調用delete的方法，具體實現點擊效果
                m.performIdentifierAction(mDeleteItem.getItemId(), 0);
            }
			});

這裏是點擊的方法實現

   @Override
        public boolean onActionItemClicked(final ActionMode mode, MenuItem item) {
          
            switch (item.getItemId()) {
                case R.id.delete:
                    if (mSelectedThreadIds.size() > 0) {
                        Log.v(TAG, "ConversationList->ModeCallback: delete");
                        if (mDeleteAlertDialog != null && mDeleteAlertDialog.isShowing()) {
                            MmsLog.d(TAG, "no need to show delete dialog");
                        } else {
                            confirmDeleteThreads(mSelectedThreadIds, mQueryHandler);
                        }
                    } else {
                        item.setEnabled(false);
                    }
                    break;

在xml中使用layout添加自己想要的佈局

<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:id="@+id/delete"
          android:title="@string/delete"
          android:actionLayout="@layout/zzz_menu_actionlayout"
          android:showAsAction="always" />
</menu>

具體的佈局zzz_menu_actionlayout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
	android:paddingRight="10dp"
	>
<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
	android:padding="10dp"
	android:src="@drawable/ic_menu_trash_holo_dark"
	android:background="?android:attr/selectableItemBackground"
	/>
   
</LinearLayout>

這樣就可以實現menuItem的偏移問題