扩展 Android SearchView

Question

我的应用程序中有一个自定义的 Android SearchView。我正在尝试通过为 ImageSearch 功能添加自定义图标相机来扩展它。

我试图通过使用它的 searchTextView 的 onCreateActionMode 来扩展它，但是图标没有显示出来。我希望 SearchView 将图标添加到里面。这是我的代码：

public class CabSearchView extends SearchView {
private static final boolean DEFAULT_CAB_ENABLED = true;
private static final int IMAGESEARCH = 0;

private boolean mCabEnabled;

public CabSearchView(Context context) {
    this(context, null);
}

public CabSearchView(Context context, AttributeSet attrs) {
    this(context, attrs, android.support.v7.appcompat.R.attr.searchViewStyle);
}

public CabSearchView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    int themedIconColor = R.color.white;
    SearchView.SearchAutoComplete searchSrcTextView = (SearchView.SearchAutoComplete)findViewById(R.id.search_src_text);
    searchSrcTextView.setCustomSelectionActionModeCallback(new Callback());
    searchSrcTextView.setTextColor(getResources().getColor(themedIconColor));
    searchSrcTextView.setHintTextColor(getResources().getColor(themedIconColor));
    ImageView searchMagIcon = (ImageView)findViewById(R.id.search_mag_icon);
    searchMagIcon.setColorFilter(getResources().getColor(themedIconColor));
    ImageView searchCloseBtn = (ImageView) findViewById(R.id.search_close_btn);
    searchCloseBtn.setColorFilter(getResources().getColor(themedIconColor));
    addFilter(searchSrcTextView, new PlainTextInputFilter());

    initLayoutAttributes(attrs, defStyleAttr);
}

public boolean isCabEnabled() {
    return mCabEnabled;
}

public void setCabEnabled(boolean enabled) {
    mCabEnabled = enabled;
}

private void addFilter(TextView textView, InputFilter filter) {
    InputFilter[] filters = textView.getFilters();
    InputFilter[] newFilters = Arrays.copyOf(filters, filters.length + 1);
    newFilters[filters.length] = filter;
    textView.setFilters(newFilters);
}

private void initLayoutAttributes(AttributeSet attrs, int defStyleAttr) {
    TypedArray attrsArray = getContext().obtainStyledAttributes(attrs,
            R.styleable.CabSearchView, defStyleAttr, 0);

    setCabEnabled(attrsArray.getBoolean(R.styleable.CabSearchView_cabEnabled,
            DEFAULT_CAB_ENABLED));

    attrsArray.recycle();
}

private class Callback implements ActionMode.Callback {
    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {

        menu.add(0, IMAGESEARCH, 0, 
  "ImageSearch").setIcon(R.drawable.ic_camera_white_24dp);
        return isCabEnabled();
    }

    @Override
    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
        return false;
    }

    @Override
    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
        return false;
    }

    @Override
    public void onDestroyActionMode(ActionMode mode) { }
}

private static class PlainTextInputFilter implements InputFilter {
    @Override
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest,
                               int dstart, int dend) {
        return RichTextUtil.stripRichText(source, start, end).subSequence(start, end);
    }
}
}

在其他情况下，我尝试了这个：

ImageView camImageView = new ImageView(this.fragment.getActivity());
camImageView .setImageResource(R.drawable.ic_camera_white_24dp);
((LinearLayout) searchView.getChildAt(0)).addView(camImageView,0);

在这种情况下，图像显示在实际 searchView 的最左侧。

我希望该图标在关闭按钮之前包含在 searchTextview 中，但是，它要么不显示，要么显示在最左边或最右边，具体取决于它作为 searchTextView 的子视图的位置。

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预期

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当前

Answer 1

我使用了一个简单的搜索视图，它应该也适用于您的搜索视图类。

下面是代码。

SearchView searchView = findViewById(R.id.searchView);

ImageView camImageView = new ImageView(this);
camImageView .setImageResource(R.drawable.ic_launcher_foreground);
int getTotalChild = searchView.getChildCount();
((LinearLayout) searchView.getChildAt(getTotalChild-1)).addView(camImageView);

在您的情况下，代码最后一行的索引应该是getTotalChild - 2。 它应该可以工作。