Android首选项片段文本颜色

Question

我想更改android偏好片段中的文本颜色.我目前正在使用自定义主题来更改复选框图像,背景,onClick突出显示,这一切都很有效...除了文本颜色.我不想使用默认主题,我想拥有自己的主题,所以它看起来我想要的只是改变文本颜色,有人可以帮助.

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:android="http://schemas.android.com/apk/res/android">
    <style name="selectedTextStyle">  
        <item name="android:textSize">18sp</item>
    </style>
    <style name="buttonTextStyle">  
        <item name="android:textSize">20sp</item>
    </style>
    <style name="PreferencesTheme" >
        <item name="android:windowBackground">@drawable/lists_background</item>
        <item name="android:listViewStyle">@style/listViewPrefs</item>
        <item name="android:checkboxStyle">@style/MyCheckbox</item>

    </style>
    <style name="MyTextAppearance" parent="@android:style/TextAppearance">
        <item name="android:textColor">@color/black</item>
      </style>
    <style name="listViewPrefs" parent="@android:Widget.ListView">
        <item name="android:listSelector">@layout/list_selector_master</item>
        <item name="android:textAppearance">@style/MyTextAppearance</item>
    </style>
    <style name="MyCheckbox" parent="android:Widget.CompoundButton.CheckBox">
        <item name="android:button">@drawable/btn_check</item>
    </style>

</resources>

表现:

        <activity
            android:name="com.package.SettingsActivity"
            android:theme="@style/PreferencesTheme"
            android:configChanges="keyboard|orientation" >
        </activity>

活动:

import android.app.Activity;
import android.os.Bundle;
import android.preference.PreferenceFragment;

public class SettingsActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Display the fragment as the main content.
        getFragmentManager().beginTransaction()
                .replace(android.R.id.content, new SettingsFragment())
                .commit();

    }
    public static class SettingsFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            // Load the preferences from an XML resource
            addPreferencesFromResource(R.xml.preferences);

        }
    }

}

Answer 1

以下是preference.xml中的两个TextView对象(a的布局):Preference

    <TextView android:id="@+android:id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:singleLine="true"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:ellipsize="marquee"
        android:fadingEdge="horizontal" />

    <TextView android:id="@+android:id/summary"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@android:id/title"
        android:layout_alignLeft="@android:id/title"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:textColor="?android:attr/textColorSecondary"
        android:maxLines="4" />

所以看起来你可以覆盖textAppearanceLarge并textColorSecondary在你的主题中实现颜色变化.这是一个例子:

<style name="AppTheme">
    <item name="android:textAppearanceLarge">@style/MyTextAppearance</item>
    <item name="android:checkboxStyle">@style/MyCheckBox</item>
</style>

<style name="MyCheckBox" parent="@android:style/Widget.CompoundButton.CheckBox">
    <item name="android:button">@android:drawable/btn_star</item>
</style>

<style name="MyTextAppearance" parent="@android:style/TextAppearance.Large">
    <item name="android:textColor">#ff0000</item>
</style>

Answer 2

我想下一个简单明了的方法是:

RES /值/ styles.xml

<style name="SettingsFragmentStyle">

    <item name="android:textColorSecondary">#222</item>
    <item name="android:textColor">#CCC</item>
    <item name="android:background">#999</item>
    ...
</style>

在onCreate中包含PreferenceFragment子类的Activity中:

setTheme(R.style.SettingsFragmentStyle);

Answer 3

刚刚找到了完成工作的答案.

此文件是首选项列表项的默认布局:

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2006 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.
-->

<!-- Layout for a Preference in a PreferenceActivity. The
     Preference is able to place a specific widget for its particular
     type in the "widget_frame" layout. -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="?android:attr/listPreferredItemHeight"
    android:gravity="center_vertical"
    android:paddingRight="?android:attr/scrollbarSize"
    android:background="?android:attr/selectableItemBackground" >

    <ImageView
        android:id="@+android:id/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        />

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dip"
        android:layout_marginRight="6dip"
        android:layout_marginTop="6dip"
        android:layout_marginBottom="6dip"
        android:layout_weight="1">

        <TextView android:id="@+android:id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:singleLine="true"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:ellipsize="marquee"
            android:fadingEdge="horizontal" />

        <TextView android:id="@+android:id/summary"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@android:id/title"
            android:layout_alignLeft="@android:id/title"
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:textColor="?android:attr/textColorSecondary"
            android:maxLines="4" />

    </RelativeLayout>

    <!-- Preference should place its actual preference widget here. -->
    <LinearLayout android:id="@+android:id/widget_frame"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:gravity="center_vertical"
        android:orientation="vertical" />

</LinearLayout>

您可以将其用作基础并创建自己的自定义布局.必须在每个Preference中应用此布局,如下所示

<Preference android:key="somekey" 
android:title="Title" 
android:summary="Summary" 
android:layout="@layout/custom_preference_layout"/>

您可以更改列表外的整个布局,只需要一个包含listview的布局文件,其中将填充首选项,如下所示:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Something" />

    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</LinearLayout>

要覆盖默认布局PreferenceFragment,请覆盖方法onCreateView并更改膨胀视图:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.custom_options_layout, null);
}

根据这些答案:

为首选项创建自定义布局

如何向PreferenceScreen添加按钮

Android:如何在偏好中调整边距/填充？