如何在Android上的PreferenceScreen中添加RTL支持
我想在设置中使用如何在Android上的PreferenceScreen中添加RTL支持,android,xml,android-manifest,Android,Xml,Android Manifest,我想在设置中使用首选项屏幕,但无法将RTL设置为此XML文件。我试过使用这个代码,但它不起作用 Manifest中的android:supportsRtl=“true” Minsdk第15版。 我的XML代码: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:orienta
首选项屏幕
,但无法将RTL
设置为此XML文件。我试过使用这个代码,但它不起作用
Manifest中的android:supportsRtl=“true”
Minsdk第15版。
我的XML代码:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
<PreferenceCategory android:title="@string/action_settings">
<Preference
android:key="prefDeleteAll"
android:summary="@string/settings_delete_all_description"
android:title="@string/settings_delete_all" />
<Preference
android:key="prefCustomPath"
android:title="@string/settings_custom_path" />
<ListPreference
android:defaultValue="1"
android:entries="@array/filenameEntries"
android:entryValues="@array/filenameValues"
android:key="prefCustomFilename"
android:title="@string/settings_custom_filename" />
<ListPreference
android:defaultValue="1"
android:entries="@array/sortEntries"
android:entryValues="@array/sortValues"
android:key="prefSortMode"
android:title="@string/settings_sort_mode" />
</PreferenceCategory>
<PreferenceCategory android:title="@string/settings_customizations">
<yuku.ambilwarna.widget.AmbilWarnaPreference
android:defaultValue="@color/primary"
android:key="prefPrimaryColor"
android:summary="@string/settings_primary_color_description"
android:title="@string/settings_primary_color" />
<yuku.ambilwarna.widget.AmbilWarnaPreference
android:defaultValue="@color/fab"
android:key="prefFABColor"
android:summary="@string/settings_fab_color_description"
android:title="@string/settings_fab_color" />
<CheckBoxPreference
android:defaultValue="false"
android:key="prefNavigationBlack"
android:summary="@string/settings_navigation_black_description"
android:title="@string/settings_navigation_black" />
<Preference
android:key="prefDefaultValues"
android:summary="@string/settings_default_customization_description"
android:title="@string/settings_default_customization" />
</PreferenceCategory>
<PreferenceCategory android:title="@string/action_about">
<Preference
android:key="prefLicense"
android:title="@string/settings_license" />
<Preference
android:key="prefVersion"
android:summary="@string/settings_about"
android:title="@string/app_name" />
</PreferenceCategory>
</PreferenceScreen>
如何修复它?有一个技巧如何解决,因为基本上PreferenceScreen不支持RTL 最简单的方法是将下一个代码放在“创建首选项”活动中:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
getListView().setLayoutDirection(View.LAYOUT_DIRECTION_LOCALE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
这就应该做到了我覆盖了
首选项#onCreateView(ViewGroup)
,并将一些RTL规则应用于从super
返回的视图
下面是一个EditTextPreferenceRTL
的实现,其行为类似于EditTextPreference
,但其“标题”和“摘要”显示在Right-To-Left:
public class EditTextPreferenceRTL extends EditTextPreference {
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
EditTextPreferenceRTL(Context context, AttributeSet attrs, int defStyleAttr,
int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
EditTextPreferenceRTL(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
EditTextPreferenceRTL(Context context, AttributeSet attrs) {
super(context, attrs);
}
EditTextPreferenceRTL(Context context) {
super(context);
}
@Override
protected View onCreateView(ViewGroup parent) {
final View view = super.onCreateView(parent);
final int titleIndex = 0;
final int summaryIndex = 1;
RelativeLayout layout = (RelativeLayout) ((LinearLayout) view).getChildAt(summaryIndex);
RelativeLayout.LayoutParams lpTitle = new RelativeLayout.LayoutParams(view.getLayoutParams());
RelativeLayout.LayoutParams lpSummary = new RelativeLayout.LayoutParams(view.getLayoutParams());
lpTitle.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
lpSummary.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
TextView tvTitle = (TextView) layout.getChildAt(titleIndex);
tvTitle.setLayoutParams(lpTitle);
lpSummary.addRule(RelativeLayout.BELOW, tvTitle.getId());
TextView tvSummary = (TextView) layout.getChildAt(summaryIndex);
tvSummary.setLayoutParams(lpSummary);
return view;
}
}
注
此代码不向前兼容,在将来的版本中可能会中断,
EditTextPreference
中可能会发生更改,EditTextPreferenceRTL
扩展了
您可以将此代码与AppCompatPreferenceActivity一起使用:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
getListView().setLayoutDirection(View.LAYOUT_DIRECTION_LOCALE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
您可以向我显示首选项活动代码?使用以下链接下载我的代码:。tnx请帮助我您尝试过在“super.onCreate(savedInstanceState);”之后和“addPreferencesFromResource(R.xml.settings);”之前添加我给您的代码吗?是的,super.onCreate(savedInstanceState);如果(Build.VERSION.SDK\u INT>=Build.VERSION\u code.JELLY\u BEAN\u MR1)getListView().setLayoutDirection(View.LAYOUT\u DIRECTION\u LOCALE);addPreferencesFromResource(R.xml.settings)。但不起作用:(.我需要这个IF设置语言动态地为我工作:getListView().setLayoutDirection(View.LAYOUT\u DIRECTION\u RTL);