Android SearchView修改字体颜色

最新推荐文章于 2021-05-29 08:13:59 发布

Jakob2016

最新推荐文章于 2021-05-29 08:13:59 发布

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分类专栏： android 文章标签： android

本文链接：https://blog.youkuaiyun.com/lny892505102/article/details/77836051

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本文介绍了如何在不使用反射的情况下，通过分析SearchView源码和样式，改变其hint的颜色。主要步骤包括检查style.xml，追踪SearchViewStyle，尝试修改textAppearance属性，最后发现需要修改SearchAutoComplete（AutoCompleteTextView子类）的样式来达到目的。

SearchView的hint颜色怎么改呢，SearchView并没有提供相关属性。在网上找到的方法基本都是通过反射实现的。但本人不是很喜欢用反射，难道就不能通过样式修改，决定还是看看源码。下面是看了源码之后发现的方法。

注意我用的是v7包的SearchView。

style.xml

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- ...  -->
</style>

查看Theme.AppCompat.Light.NoActionBar样式，最终找到Base.V7.Theme.AppCompat.Light的SearchViewStyle

<style name="Base.V7.Theme.AppCompat.Light" parent="Platform.AppCompat.Light">
<!-- ...  -->
<item name="searchViewStyle">@style/Widget.AppCompat.Light.SearchView</item>
<!-- ...  -->
</style>

看看SearchViewStyle

<style name="Base.Widget.AppCompat.SearchView" parent="android:Widget">
        <item name="layout">@layout/abc_search_view</item>
        <item name="queryBackground">@drawable/abc_textfield_search_material</item>
        <item name="submitBackground">@drawable/abc_textfield_search_material</item>
        <item name="closeIcon">@drawable/abc_ic_clear_material</item>
        <item name="searchIcon">@drawable/abc_ic_search_api_material</item>
        <item name="searchHintIcon">@drawable/abc_ic_search_api_material</item>
        <item name="goIcon">@drawable/abc_ic_go_search_api_material</item>
        <item name="voiceIcon">@drawable/abc_ic_voice_search_api_material</item>
        <item name="commitIcon">@drawable/abc_ic_commit_search_api_mtrl_alpha</item>
        <item name="suggestionRowLayout">@layout/abc_search_dropdown_item_icons_2line</item>
</style>

没有发现text相关属性，看看父样式有没有

<style name="Widget">
        <item name="textAppearance">?textAppearance</item>
</style>

哈哈，这不是有么，那直接改textAppearance不就可以了吗，怀着激动的心情唰唰的撸起来。结果发现没什么用。为什么啊？？？
不要激动，有没有注意到layout这个属性。点进去看下吧，这其实searchView的布局文件

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/search_bar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

    <!-- This is actually used for the badge icon *or* the badge label (or neither) -->
    <TextView
            android:id="@+id/search_badge"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:gravity="center_vertical"
            android:layout_marginBottom="2dip"
            android:drawablePadding="0dip"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textColor="?android:attr/textColorPrimary"
            android:visibility="gone" />

    <ImageView
            android:id="@+id/search_button"
            style="?attr/actionButtonStyle"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="center_vertical"
            android:focusable="true"
            android:contentDescription="@string/abc_searchview_description_search" />

    <LinearLayout
            android:id="@+id/search_edit_frame"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_marginLeft="8dip"
            android:layout_marginRight="8dip"
            android:orientation="horizontal"
            android:layoutDirection="locale">

        <ImageView
                android:id="@+id/search_mag_icon"
                android:layout_width="@dimen/abc_dropdownitem_icon_width"
                android:layout_height="wrap_content"
                android:scaleType="centerInside"
                android:layout_gravity="center_vertical"
                android:visibility="gone"
                style="@style/RtlOverlay.Widget.AppCompat.SearchView.MagIcon" />

        <!-- Inner layout contains the app icon, button(s) and EditText -->
        <LinearLayout
                android:id="@+id/search_plate"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:layout_gravity="center_vertical"
                android:orientation="horizontal">

            <view class="android.support.v7.widget.SearchView$SearchAutoComplete"
                  android:id="@+id/search_src_text"
                  android:layout_height="36dip"
                  android:layout_width="0dp"
                  android:layout_weight="1"
                  android:layout_gravity="center_vertical"
                  android:paddingLeft="@dimen/abc_dropdownitem_text_padding_left"
                  android:paddingRight="@dimen/abc_dropdownitem_text_padding_right"
                  android:singleLine="true"
                  android:ellipsize="end"
                  android:background="@null"
                  android:inputType="text|textAutoComplete|textNoSuggestions"
                  android:imeOptions="actionSearch"
                  android:dropDownHeight="wrap_content"
                  android:dropDownAnchor="@id/search_edit_frame"
                  android:dropDownVerticalOffset="0dip"
                  android:dropDownHorizontalOffset="0dip" />

            <ImageView
                    android:id="@+id/search_close_btn"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:paddingLeft="8dip"
                    android:paddingRight="8dip"
                    android:layout_gravity="center_vertical"
                    android:background="?attr/selectableItemBackgroundBorderless"
                    android:focusable="true"
                    android:contentDescription="@string/abc_searchview_description_clear" />

        </LinearLayout>

        <LinearLayout
                android:id="@+id/submit_area"
                android:orientation="horizontal"
                android:layout_width="wrap_content"
                android:layout_height="match_parent">

            <ImageView
                    android:id="@+id/search_go_btn"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:layout_gravity="center_vertical"
                    android:paddingLeft="16dip"
                    android:paddingRight="16dip"
                    android:background="?attr/selectableItemBackgroundBorderless"
                    android:visibility="gone"
                    android:focusable="true"
                    android:contentDescription="@string/abc_searchview_description_submit" />

            <ImageView
                    android:id="@+id/search_voice_btn"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:layout_gravity="center_vertical"
                    android:paddingLeft="16dip"
                    android:paddingRight="16dip"
                    android:background="?attr/selectableItemBackgroundBorderless"
                    android:visibility="gone"
                    android:focusable="true"
                    android:contentDescription="@string/abc_searchview_description_voice" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

仔细瞧瞧布局文件，找找跟文字有关的控件

<view class="android.support.v7.widget.SearchView$SearchAutoComplete"
                  android:id="@+id/search_src_text"
                  android:layout_height="36dip"
                  android:layout_width="0dp"
                  android:layout_weight="1"
                  android:layout_gravity="center_vertical"
                  android:paddingLeft="@dimen/abc_dropdownitem_text_padding_left"
                  android:paddingRight="@dimen/abc_dropdownitem_text_padding_right"
                  android:singleLine="true"
                  android:ellipsize="end"
                  android:background="@null"
                  android:inputType="text|textAutoComplete|textNoSuggestions"
                  android:imeOptions="actionSearch"
                  android:dropDownHeight="wrap_content"
                  android:dropDownAnchor="@id/search_edit_frame"
                  android:dropDownVerticalOffset="0dip"
                  android:dropDownHorizontalOffset="0dip" />

这是SearchView的一个内部类SearchAutoComplete，他是继承AutoCompleteTextView，那我们只要修改AutoCompleteTextView的样式就可以了，试试吧！

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- ...  -->
    <item name="autoCompleteTextViewStyle">@style/AppAutoCompleteTextView</item>
</style>

<!--修改searchView字体颜色、大小-->
<style name="AppAutoCompleteTextView" parent="Widget.AppCompat.AutoCompleteTextView">
    <item name="android:textColor">@color/colorAccent</item>
    <item name="android:textAppearance">@style/AutoCompleteTextAppearance</item>
</style>

<style name="AutoCompleteTextAppearance" parent="android:TextAppearance">
    <item name="android:textColor">@color/colorAccent</item>
    <item name="android:textColorHint">@color/text_color_9</item>
    <item name="android:textColorHighlight">@color/text_color_9</item>
    <item name="android:textSize">14sp</item>
</style>

效果：