如何自定义列表preference单选按钮 [英] How to customize list preference radio button
问题描述
我已定制的所有单选按钮在我的应用程序，但在列表preference的单选按钮不会被定制。
I have customized all the radioButtons in my application but the radioButtons in the listPreference does not get customized.
我已经使用这个XML命名btn_radio.xml
I have used this xml named btn_radio.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:state_window_focused="false"
android:drawable="@drawable/radio_selected" />
<item android:state_checked="false" android:state_window_focused="false"
android:drawable="@drawable/radio_unselected" />
<item android:state_checked="true" android:state_pressed="true"
android:drawable="@drawable/radio_selected" />
<item android:state_checked="false" android:state_pressed="true"
android:drawable="@drawable/radio_unselected" />
<item android:state_checked="true" android:state_focused="true"
android:drawable="@drawable/radio_selected" />
<item android:state_checked="false" android:state_focused="true"
android:drawable="@drawable/radio_unselected" />
<item android:state_checked="false" android:drawable="@drawable/radio_unselected" />
<item android:state_checked="true" android:drawable="@drawable/radio_selected" />
</selector>
这是它扩展了Android的定制单选按钮customRadioButton
This is the customRadioButton which extends the android custom radio button
<style name="CustomRadioButton" Parent="@android:style/Widget.CompoundButton.RadioButton">
<item name="android:button">@drawable/btn_radio</item>
</style>
在我的应用程序的主题，我已经这样做了更改
in the theme of my application I have done this changes
<item name="android:radioButtonStyle">@style/CustomRadioButton</item>
<item name="android:listChoiceIndicatorSingle">@style/CustomRadioButton</item>
这改变自定义我的应用程序的所有单选按钮除了在我的名单preference单选按钮
推荐答案
从XML样式化目录preference 是不能直接。问题是，目录preference （通过对话preference ）调用 AlertDialog.Builder（上下文）来建立自己的对话框，而不是 AlertDialog.Builder（上下文的背景下，INT themeResourceId）。而后者则允许提供一个主题，前者没有，导致它回退到一个默认的Android主题
Styling the ListPreference from XML is not directly possible. The problem is that ListPreference (through DialogPreference) calls AlertDialog.Builder(Context) to build its Dialog, rather than AlertDialog.Builder(Context context, int themeResourceId). While the latter allows for providing a theme, the former does not, causing it to fall back to a default Android theme.
有关的一个项目，我需要一个目录preference 与自定义标题颜色，自定义单选按钮样式和一个自定义的ListView选择器（基本上，全息以不同的颜色）。我通过在prepareDialogBuilder（生成器）和<$ C扩展目录preference 并覆盖解决了这个$ C> OnCreateDialogView（）这样我就可以使用自定义的ListView用一个简单的ArrayAdapter，而不是对话框的内置的ListView （其中不具有样式的支持）。我也不得不重写 onDialogClosed（），以设置正确的值到preference。
For a project, I needed a ListPreference with a custom title-color, a custom radiobutton-style and a custom ListView-selector (basically, Holo in a different color). I solved this by extending ListPreference and overriding onPrepareDialogBuilder(Builder) and OnCreateDialogView() so I could use a custom ListView with a simple ArrayAdapter, rather than Dialog's built-in ListView (which doesn't have support for styling). I also had to override onDialogClosed() in order to set the right value to the preference.
为了使用它，你所要做的就是替换的preference类名在preferences.xml ROM 目录preference 到 com.your.packagename.ThemedList preference 。除此之外，实施相同列出preference
In order to use it, all you have to do is replace the classname of the preference in your preferences.xml rom ListPreference to com.your.packagename.ThemedListPreference. Other than that, the implementation is identical to ListPreference.
public class ThemedListPreference extends ListPreference implements OnItemClickListener {
public static final String TAG = "ThemedListPreference";
private int mClickedDialogEntryIndex;
private CharSequence mDialogTitle;
public ThemedListPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ThemedListPreference(Context context) {
super(context);
}
@Override
protected View onCreateDialogView() {
// inflate custom layout with custom title & listview
View view = View.inflate(getContext(), R.layout.dialog_settings_updatetime, null);
mDialogTitle = getDialogTitle();
if(mDialogTitle == null) mDialogTitle = getTitle();
((TextView) view.findViewById(R.id.dialog_title)).setText(mDialogTitle);
ListView list = (ListView) view.findViewById(android.R.id.list);
// note the layout we're providing for the ListView entries
ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(
getContext(), R.layout.btn_radio,
getEntries());
list.setAdapter(adapter);
list.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
list.setItemChecked(findIndexOfValue(getValue()), true);
list.setOnItemClickListener(this);
return view;
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
// adapted from ListPreference
if (getEntries() == null || getEntryValues() == null) {
// throws exception
super.onPrepareDialogBuilder(builder);
return;
}
mClickedDialogEntryIndex = findIndexOfValue(getValue());
// .setTitle(null) to prevent default (blue)
// title+divider from showing up
builder.setTitle(null);
builder.setPositiveButton(null, null);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
mClickedDialogEntryIndex = position;
ThemedListPreference.this.onClick(getDialog(), DialogInterface.BUTTON_POSITIVE);
getDialog().dismiss();
}
@Override
protected void onDialogClosed(boolean positiveResult) {
// adapted from ListPreference
super.onDialogClosed(positiveResult);
if (positiveResult && mClickedDialogEntryIndex >= 0
&& getEntryValues() != null) {
String value = getEntryValues()[mClickedDialogEntryIndex]
.toString();
if (callChangeListener(value)) {
setValue(value);
}
}
}
}
有关我的ListView项我用下面的布局。请注意，可绘制/ btn_radio_holo_light是一个XML抽拉像在你的Android的SDK /平台/ Android的X /数据/ RES /绘制文件夹，只能用引用不同的可绘制。
For my ListView items I used the layout below. Note that drawable/btn_radio_holo_light is an XML-drawable like the one in your android-sdk/platforms/android-x/data/res/drawable folder, only with references to different drawables.
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:checkMark="@drawable/btn_radio_holo_light"
android:gravity="center_vertical"
android:minHeight="@dimen/list_item_minheight"
android:paddingLeft="@dimen/list_item_paddingLeft"
android:paddingRight="@dimen/list_item_paddingLeft" />
有关我的对话框布局（ onCreateDialogView（）），我用了以下内容：
For my Dialog layout (onCreateDialogView()), I used the following:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/dialog_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:textColor="@color/title_color"
android:textSize="22sp" />
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="@color/divider_color" />
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:listSelector="@drawable/list_selector" />
</LinearLayout>
这篇关于如何自定义列表preference单选按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
