Android:如何检测单击自定义SearchView元素

时间:2013-01-30 11:23:30

标签: android android-layout android-searchmanager

我创建了一个自定义SearchView,但到目前为止,如果用户点击了searchView小部件,我找不到(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。我需要该事件,因为我想在用户打开searchView后更改UI

enter image description here

修改 我到目前为止尝试的是

  • setOnClickListener到SearchView元素 - >但只有在SearchView打开时才会触发(第2张图片)

  • 搜索了SearchView Api,但是没有听众表示该行动(或者我是否会失明?)

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

有什么想法吗?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,稍后会在ui中插入...

5 个答案:

答案 0 :(得分:55)

这个怎么样?

public void setOnSearchClickListener (View.OnClickListener listener)

android开发者网站的描述说.. 设置一个侦听器,以便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)也可以使这个监听器得到通知。

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

答案 1 :(得分:8)

 public void setOnSearchClickListener (View.OnClickListener listener)

解决了这个问题。实际上我以前一直在使用这个监听器,但OnSearchClickListener不是我的SearchView中的OnClickListener。您必须从外部声明该侦听器,如

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

 sv.setOnSearchClickListener(new OnClickListener() {

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

        }
 });

答案 2 :(得分:7)

用于文本字段可见的使用:

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

用于文本字段隐身使用:

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

答案 3 :(得分:3)

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
        }
    }
});

答案 4 :(得分:2)

这是用API 15编写的。它尚未经过测试。详情见底。

public class MySearchView extends SearchView {
    private boolean mHasFocus;
    private OnOpenListener mOnOpenListener;

    public MySearchView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setOnOpenListener(OnOpenListener onOpenListener) {
        mOnOpenListener = onOpenListener;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        boolean onTouchEvent = super.onTouchEvent(event);

        switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            if (!mHasFocus) {
                mHasFocus = true;

                if (mOnOpenListener != null) {
                    mOnOpenListener.onOpen();
                }
            }

            break;
        }

        return onTouchEvent;
    }

    @Override
    protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) {
        super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);

        if (!gainFocus) {
            mHasFocus = false;
        }
    }

    public interface OnOpenListener {
        public void onOpen();
    }
}

您给它一个OnOpenListener,当单击View时,它将触发该事件。当它失去焦点时,它将重置布尔值。我认为它也将触发已经内置的OnClose。可能存在的问题是焦点位;在使用SearchView之前我遇到了问题,它不会放弃它的焦点。也许你可以在视图有焦点时分配到课外。如果你想要更多的功能,你必须建立自己的。