如何捕获SearchView的清除按钮单击? [英] How do I capture SearchView's clear button click?

问题描述

如何捕获用户单击右侧X按钮上的SearchView清晰文本的事件

How can I capture the event of user click on clear SearchView text by clicking on the X button on the right

我已经捕获了onQueryTextChange事件，但这是针对所有文本更改的，而不是针对该X按钮的

I already captured onQueryTextChange event but, this is for any text change not for that X button

推荐答案

尝试了多种组合之后，我发现了如何捕获SearchView中X按钮后面的事件

After trying a lot of combinations, I found how to capture the event behind the X button in SearchView

下面是我的一个应用程序中onCreateOptionsMenu函数的代码片段. mSearchMenu和mSearchView是全局变量. X实际上是ID为search_close_btn的ImageView，文本区域为ID为search_src_text

Below is a code snippet from onCreateOptionsMenu function in one of my apps. mSearchMenu and mSearchView are global variables. The X is actually an ImageView with ID search_close_btn and the text area is an EditText view with ID search_src_text

@SuppressLint("NewApi")
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu items for use in the action bar
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.country_list_activity_actions, menu);
        mSearchMenu = menu.findItem(R.id.action_search);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            // Get the SearchView and set the searchable configuration
            SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
            mSearchView = (SearchView) menu.findItem(R.id.action_search).getActionView();

            // Assumes current activity is the searchable activity
            mSearchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
            mSearchView.setIconifiedByDefault(false); // Do not iconify the widget; expand it by default

            // Get the search close button image view
            ImageView closeButton = (ImageView)mSearchView.findViewById(R.id.search_close_btn);

            // Set on click listener
            closeButton.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    LoggerUtils.d(LOG, "Search close button clicked");
                    //Find EditText view
                    EditText et = (EditText) findViewById(R.id.search_src_text);

                    //Clear the text from EditText view
                    et.setText("");

                    //Clear query
                    mSearchView.setQuery("", false);
                    //Collapse the action view
                    mSearchView.onActionViewCollapsed();
                    //Collapse the search widget
                    mSearchMenu.collapseActionView();
                }
            });
        }

        // When using the support library, the setOnActionExpandListener() method is
        // static and accepts the MenuItem object as an argument
        mSearchMenu.setOnActionExpandListener(new OnActionExpandListener() {

            @Override
            public boolean onMenuItemActionExpand(MenuItem item) {
                //Nothing to do here
                LoggerUtils.d(LOG, "Search widget expand ");
                return true; // Return true to expand action view
            }

            @Override
            public boolean onMenuItemActionCollapse(MenuItem item) {
                LoggerUtils.d(LOG, "Search widget colapsed ");
                return true; // Return true to collapse action view
            }
        });

        return super.onCreateOptionsMenu(menu);
    }

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