Android:如何检测单击自定义SearchView元素

Question

我正在创建一个自定义SearchView,但到目前为止,如果用户点击searchView小部件,我没有找到(点击)事件或监听器.所以SearchView很接近,用户点击搜索图标(哪个监听器？!),SearchView被打开.见下图.我需要那个事件,因为我想在用户打开searchView后更改UI

编辑: 到目前为止我尝试的是

• setOnClickListener 到SearchView元素 - >但它只在SearchView打开时触发(第2张图片)

• 搜索了SearchViewApi,但是没有听众那个动作(或者我是盲人？)

• 尝试使用onWindowFocusChangedsearchView 解决方法,但由于searchView隐藏在某种youtube/facebook侧边栏中,这不起作用

有任何想法吗？我也附上了我的SearchView代码,但不认为代码是错误的.只是没有听众.顺便说一句:欢迎任何变通方法.但如果SearchView在开始时关闭,那就太好了!(如上图所示)

public class AmplifySearchView extends SearchView implements
        OnQueryTextListener, OnFocusChangeListener,
        OnCloseListener {

    private static final String DEBUG_TAG = "AmplifySeachView";

    private Context context;
    private DataBaseController datasource;
    private StationListView searchResultListView;
    private TextView noResultTextView;

    private Boolean searchStarted = false;

    public AmplifySearchView(Context context) {
        super(context);
        this.context = context;
    }

    public AmplifySearchView(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
    }

    public void initSearchView(StationListView view, TextView noResultTextView) {
        this.searchResultListView = view;
        this.searchResultListView.setActivityId(Constants.UI_SEARCH_RESULT_LIST);
        this.noResultTextView = noResultTextView;


        this.setOnQueryTextListener(this);
        this.setOnFocusChangeListener(this);
        this.setOnCloseListener(this);
        this.setOnCloseListener(this);

        setIconifiedByDefault(true);

        datasource = DataBaseController.getInstance(context);

        int id = this.getContext().getResources().getIdentifier("android:id/search_src_text", null, null);
        TextView textView = (TextView) findViewById(id);
        textView.setTextColor(Color.WHITE);


        resetSearchInputTextField();
    }

    private void resetSearchInputTextField() {
        setQueryHint(getResources().getString(R.string.search_hint));
    }

    @Override
    public boolean onClose() {
        Log.d(DEBUG_TAG, "onClose()");
        searchResultListView.setVisibility(View.GONE);
        noResultTextView.setVisibility(View.GONE);

        searchStarted = false;

        Intent intent = new Intent(Constants.SEARCH_ENDED);
        intent.addCategory(Constants.UI_AMPLIFY_CATEGORY);
        context.sendBroadcast(intent);

        return false;
    }

    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        Log.d(DEBUG_TAG,"onFocusChange()" + hasFocus);

    }


    @Override
    public boolean onQueryTextChange(String newText) {

        //do sth...
    }

    @Override
    public boolean onQueryTextSubmit(String query) {
        Log.d(DEBUG_TAG, "onQueryTextSubmit -> " + query);
        return true;
    }

    @Override
    protected void onFocusChanged(boolean gainFocus, int direction,
            Rect previouslyFocusedRect) {
        Log.d(DEBUG_TAG, "onQueryTextSubmit -> " + gainFocus);
        // TODO Auto-generated method stub
        super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);
    }

    @Override
    public void onActionViewCollapsed() {
        Log.d(DEBUG_TAG, "onActionViewCollapsed");
        super.onActionViewCollapsed();
    }

    @Override
    public void onActionViewExpanded() {
        Log.d(DEBUG_TAG, "onActionViewExpanded");
        super.onActionViewExpanded();
    }
}

btw:on焦点更改在这里不起作用,因为searchview在开头是不可见的,后面插入ui ...

Answer 1

这个怎么样？

public void setOnSearchClickListener (View.OnClickListener listener)

来自android开发者网站的描述说..设置一个监听器,在按下搜索按钮时通知.这仅在默认情况下文本字段不可见时才相关.调用setIconified(false)也可以使该侦听器得到通知.

http://developer.android.com/reference/android/widget/SearchView.html#setOnSearchClickListener(android.view.View.OnClickListener)

Answer 2

 public void setOnSearchClickListener (View.OnClickListener listener)

解决了这个问题.实际上我以为我以前一直在使用这个监听器,但这OnSearchClickListener不是OnClickListener我的SearchView.你必须从外面声明听众

 AmplifySearchView sv = (AmplifySearchView) findViewById(...);

 sv.setOnSearchClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            Log.d("CLICK","CLICK");

        }
 });

Answer 3

对于文本字段可见使用:

SearchView searchView = (SearchView) findViewById(R.id.searchView);
    searchView.setOnSearchClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //your code here
        }
    });

用于文本字段隐形使用:

searchView.setOnCloseListener(new SearchView.OnCloseListener() {
        @Override
        public boolean onClose() {
            //your code here
            return false;
        }
    });

Answer 4

在 Kotlin 中试试这个：

    searchView.setOnQueryTextFocusChangeListener { _ , hasFocus ->
        if (hasFocus) {
            // searchView expanded
        } else {
            // searchView not expanded
        }
    }

在 Java 中：

searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus) {
            // searchView expanded
        } else {
            // searchView not expanded
        }
    }
});