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我的Android進(jìn)階之旅------>android Button上面的英文字符串自動大寫的問題解決
android在使用過程中账嚎，解決 Button 和 TabLayout 英文自動大寫的問題

如圖

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解決

1恳不、第一個(gè)聯(lián)想到的就是button控件的大小寫屬性檩小，可是在button里我沒設(shè)置啊烟勋？奇怪规求。。卵惦。那就找找看哪里出了問題

1.1阻肿、layout中的button,用的style=btn_normal_style

<Button
            android:id="@+id/btn_show_dialog"
            style="@style/btn_normal_style"
            android:text="彈出Dialog" />

1.2、btn_normal_style 沒有關(guān)于大小寫的沮尿。丛塌。繼續(xù)btn_base_style

    <!-- button style -->
    <style name="btn_normal_style" parent="@style/btn_base_style">
        <item name="android:textColor">@color/wx_text_white</item>
        <item name="android:textSize">@dimen/normal_text_size</item>
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">wrap_content</item>
    </style>

1.3、btn_base_style 也沒有大小寫的畜疾。赴邻。。只能前往系統(tǒng)api的style看了

<style name="btn_base_style" parent="Base.TextAppearance.AppCompat.Widget.Button">
        <item name="android:textColor">@color/wx_text_white</item>
        <item name="android:textSize">@dimen/normal_text_size</item>
    </style>

1.4啡捶、這個(gè)是一層層追溯到系統(tǒng)的button style最后的姥敛。黃天不負(fù)有心人，終于找到：

<style name="Base.TextAppearance.AppCompat.Button">
        <item name="android:textSize">@dimen/abc_text_size_button_material</item>
        <item name="android:textAllCaps">true</item>
        <item name="android:textColor">?android:textColorPrimary</item>
    </style>

2、問題解決方案

2.1了赌、直接在button的style中添加textAllCaps=false

<style name="btn_base_style" parent="Base.TextAppearance.AppCompat.Widget.Button">
        ...
        <!-- 5.0 sdk material button default textAllCaps=true -->
        <item name="textAllCaps">false</item>
</style>

2.2墨榄、上面只針對繼承了btn_base_style的button有效，如果想一勞永逸揍拆，那么直接修改theme的值

工程使用theme是自定義的AppTheme渠概，且其他activity一般不單獨(dú)使用theme，那么就會默認(rèn)使用application的theme

<application
        ...
        android:theme="@style/AppTheme">
        ...
</application>

然后在AppTheme中添加textAllCaps=false

<!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        ...
        <!-- 5.0 sdk material button default textAllCaps=true -->
        <item name="textAllCaps">false</item>
    </style>

其他

最后說一句嫂拴，其實(shí)你button沒有style播揪，但是application有theme的話，那么按照theme一層層找下去筒狠，也能找到button用的style或者textview用的style,比方說：

好長猪狈，還能繼續(xù)往下，反正就是這個(gè)意思辩恼。雇庙。谓形。

<style name="Platform.AppCompat.Light" parent="android:Theme.Holo.Light">
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowActionBar">false</item>

        <item name="android:buttonBarStyle">?attr/buttonBarStyle</item>
        <item name="android:buttonBarButtonStyle">?attr/buttonBarButtonStyle</item>
        <item name="android:borderlessButtonStyle">?attr/borderlessButtonStyle</item>

        <!-- Window colors -->
        <item name="android:colorForeground">@color/foreground_material_light</item>
        <item name="android:colorForegroundInverse">@color/foreground_material_dark</item>
        <item name="android:colorBackground">@color/background_material_light</item>
        <item name="android:colorBackgroundCacheHint">@color/abc_background_cache_hint_selector_material_light</item>
        <item name="android:disabledAlpha">@dimen/abc_disabled_alpha_material_light</item>
        <item name="android:backgroundDimAmount">0.6</item>
        <item name="android:windowBackground">@color/background_material_light</item>

        <!-- Text colors -->
        <item name="android:textColorPrimary">@color/abc_primary_text_material_light</item>
        <item name="android:textColorPrimaryInverse">@color/abc_primary_text_material_dark</item>
        <item name="android:textColorSecondary">@color/abc_secondary_text_material_light</item>
        <item name="android:textColorSecondaryInverse">@color/abc_secondary_text_material_dark</item>
        <item name="android:textColorTertiary">@color/abc_secondary_text_material_light</item>
        <item name="android:textColorTertiaryInverse">@color/abc_secondary_text_material_dark</item>
        <item name="android:textColorPrimaryDisableOnly">@color/abc_primary_text_disable_only_material_light</item>
        <item name="android:textColorPrimaryInverseDisableOnly">@color/abc_primary_text_disable_only_material_dark</item>
        <item name="android:textColorHint">@color/abc_hint_foreground_material_light</item>
        <item name="android:textColorHintInverse">@color/abc_hint_foreground_material_dark</item>
        <item name="android:textColorHighlight">@color/highlighted_text_material_light</item>
        <item name="android:textColorHighlightInverse">@color/highlighted_text_material_dark</item>
        <item name="android:textColorLink">?attr/colorAccent</item>
        <item name="android:textColorLinkInverse">?attr/colorAccent</item>
        <item name="android:textColorAlertDialogListItem">@color/abc_primary_text_material_light</item>

        <!-- Text styles -->
        <item name="android:textAppearance">@style/TextAppearance.AppCompat</item>
        <item name="android:textAppearanceInverse">@style/TextAppearance.AppCompat.Inverse</item>
        <item name="android:textAppearanceLarge">@style/TextAppearance.AppCompat.Large</item>
        <item name="android:textAppearanceLargeInverse">@style/TextAppearance.AppCompat.Large.Inverse</item>
        <item name="android:textAppearanceMedium">@style/TextAppearance.AppCompat.Medium</item>
        <item name="android:textAppearanceMediumInverse">@style/TextAppearance.AppCompat.Medium.Inverse</item>
        <item name="android:textAppearanceSmall">@style/TextAppearance.AppCompat.Small</item>
        <item name="android:textAppearanceSmallInverse">@style/TextAppearance.AppCompat.Small.Inverse</item>

        <item name="android:listChoiceIndicatorSingle">@drawable/abc_btn_radio_material</item>
        <item name="android:listChoiceIndicatorMultiple">@drawable/abc_btn_check_material</item>

        <item name="android:listPreferredItemPaddingLeft">@dimen/abc_list_item_padding_horizontal_material</item>
        <item name="android:listPreferredItemPaddingRight">@dimen/abc_list_item_padding_horizontal_material</item>

        <item name="android:actionModeCutDrawable">?actionModeCutDrawable</item>
        <item name="android:actionModeCopyDrawable">?actionModeCopyDrawable</item>
        <item name="android:actionModePasteDrawable">?actionModePasteDrawable</item>
        <item name="android:actionModeSelectAllDrawable">?actionModeSelectAllDrawable</item>

        <item name="android:textSelectHandle">@drawable/abc_text_select_handle_middle_mtrl_light</item>
        <item name="android:textSelectHandleLeft">@drawable/abc_text_select_handle_left_mtrl_light</item>
        <item name="android:textSelectHandleRight">@drawable/abc_text_select_handle_right_mtrl_light</item>
    </style>

TabLayout解決方案

app:tabTextAppearance="@android:style/TextAppearance.Widget.TabWidget"

最后

總結(jié)：小問題，也需要折騰下疆前！