在我的Android应用程序中,我有一个偏好活动,让用户覆盖应用程序的语言.为了实现这一点,我在每个活动的onResume()中调用此函数,然后重置内容视图:
public static void checkOverrideSystemLanguage(Context context) {
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(context);
// Check if system's language setting needs to be overridden
boolean overrideSystemLanguage = prefs.getBoolean(context
.getString(R.string.pref_key_chkbx_override_system_language),
false);
if (overrideSystemLanguage) {
// Get language selection and possible languages
String localeString = prefs.getString(
context.getString(R.string.pref_key_list_languages), "");
List<String> possibleLanguages = Arrays.asList(context
.getResources().getStringArray(
R.array.pref_values_list_languages));
if (possibleLanguages.contains(localeString)) {
// Change language setting in configuration
Locale locale = new Locale(localeString);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
context.getResources().updateConfiguration(config,
context.getResources().getDisplayMetrics());
}
// Use default language …Run Code Online (Sandbox Code Playgroud) 我有一个对话框来选择文件.此对话框包含用于显示目录和文件的列表视图,并具有用于导航目的的onItemClickListener.
如何对目录结构中的fling事件做出反应?我尝试在根RelativeLayout上设置一个OnTouchListener来将触摸事件分派给我的GestureListener:
final GestureDetector detector = new GestureDetector(new MyGestureDetector(tvCurrentPath));
dialog.findViewById(R.id.rlFilelist).setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View view, MotionEvent e) {
detector.onTouchEvent(e);
return false;
}
});
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事件在onTouch()中注册,但onFling()方法永远不会在MyGestureDetector中调用.但是,如果我将OnTouchListener附加到列表视图,它将按预期工作.这种方法的问题在于listview并不总是充满数据,当它是空的或点击下面的项目时,没有触发onTouch()事件.
对话框布局:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rlFilelist"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:focusable="true" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/llButtons" >
<TextView
android:id="@+id/tvCurrentPath"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:layout_marginRight="10dip" >
</TextView>
<ListView
android:id="@+id/lvFileListing"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@id/llButtons"
android:layout_below="@id/tvCurrentPath" >
</ListView>
</RelativeLayout>
<RelativeLayout
android:id="@+id/llButtons"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="5dip"
android:layout_marginTop="5dip" >
<Button
android:id="@+id/btAddDirectory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginRight="10px"
android:text="@string/host_tv_dg_add_directory" />
<Button
android:id="@+id/btUp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10px" …Run Code Online (Sandbox Code Playgroud)