Android的可点击的TextView与提示和图像开始搜索对话框和present选择的结果 [英] Android clickable TextView with hint and image to start search dialog and present selected result

问题描述

我在寻找一个例子，说明如何，我可以实现一个可点击的TextView启动了Android默认的搜索对话框并显示选择的结果一致。

I'm searching for an example that shows how I can implement a clickable textview that starts the Android default search dialog and displays a selected result line.

它应该有相同的行为，并设计在Android上的谷歌地图操作栏上的搜索栏（左如放大镜玻璃图标，搜索提示，如果TextView的是空的，点击开始定义的搜索对话框通过一个可搜索的条目）：

It should have the same behaviour and design as the search field in the Google Maps action bar on Android (e. g. magnifier glass icon on the left, a "Search" hint if the textview is empty, a click starts the search dialog defined by a searchable entry):

推荐答案

这是自定义的的EditText 复方绘制

public class SearchEditText extends EditText {

    private boolean mMagnifyingGlassShown = true;
    private Drawable mMagnifyingGlass;

    public SearchEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        mMagnifyingGlass = getCompoundDrawables()[0];
    }

    /**
     * Conditionally shows a magnifying glass icon on the left side of the text field
     * when the text it empty.
     */
    @Override
    public boolean onPreDraw() {
        boolean emptyText = TextUtils.isEmpty(getText());
        if (mMagnifyingGlassShown != emptyText) {
            mMagnifyingGlassShown = emptyText;
            if (mMagnifyingGlassShown) {
                setCompoundDrawables(mMagnifyingGlass, null, null, null);
            } else {
                setCompoundDrawables(null, null, null, null);
            }
            return false;
        }
        return super.onPreDraw();
    }

和XML

<view
                class="com.tr.search.SearchEditText"
                android:id="@+id/search_src_text"
                android:layout_height="wrap_content"
                android:layout_width="0dip"
                android:layout_weight="1.0"
                android:singleLine="true"
                android:ellipsize="end"
                android:hint="@string/search_bar_hint"
                android:drawableLeft="@drawable/magnifying_glass"
                android:freezesText="true"
            />

结果

Result

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