我的布局中有一个EditText和一个Button。
在编辑字段中写入并单击按钮后,我想在触摸键盘外部时隐藏虚拟键盘。我假设这是一段简单的代码,但我在哪里可以找到它的示例?
我的布局中有一个EditText和一个Button。
在编辑字段中写入并单击按钮后,我想在触摸键盘外部时隐藏虚拟键盘。我假设这是一段简单的代码,但我在哪里可以找到它的示例?
当前回答
在Kotlin中,只需使用这两种方法来显示和隐藏键盘。
fun showKeyboard() =
(context.getSystemService(AppCompatActivity.INPUT_METHOD_SERVICE) as? InputMethodManager)!!
.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0)
fun hideKeyboard(view: View) =
(context.getSystemService(AppCompatActivity.INPUT_METHOD_SERVICE) as? InputMethodManager)!!
.hideSoftInputFromWindow(view.windowToken, 0)
这里的视图是您当前的视图,
其他回答
•通过扩展功能的Kotlin版本
使用kotlin扩展功能,显示和隐藏软键盘非常简单。
扩展功能.kt
import android.app.Activity
import android.view.View
import android.view.inputmethod.InputMethodManager
import android.widget.EditText
import androidx.fragment.app.Fragment
fun Activity.hideKeyboard(): Boolean {
return (getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager)
.hideSoftInputFromWindow((currentFocus ?: View(this)).windowToken, 0)
}
fun Fragment.hideKeyboard(): Boolean {
return (context?.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager)
.hideSoftInputFromWindow((activity?.currentFocus ?: View(context)).windowToken, 0)
}
fun EditText.hideKeyboard(): Boolean {
return (context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager)
.hideSoftInputFromWindow(windowToken, 0)
}
fun EditText.showKeyboard(): Boolean {
return (context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager)
.showSoftInput(this, 0)
}
•使用
现在,在您的Activity或Fragment中,hideKeyboard()可以清晰地访问,也可以从EditText的实例调用它,例如:
editText.hideKeyboard()
如果有人感兴趣的话,我已经为Kotlin写了一个小扩展,但没有太多测试:
fun Fragment.hideKeyboard(context: Context = App.instance) {
val windowToken = view?.rootView?.windowToken
windowToken?.let {
val imm = context.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
imm.hideSoftInputFromWindow(windowToken, 0)
}
}
App.instance是存储在Application中的静态“this”Application对象
更新:在某些情况下,windowToken为空。我增加了使用反射来检测键盘是否关闭的额外关闭方式
/**
* If no window token is found, keyboard is checked using reflection to know if keyboard visibility toggle is needed
*
* @param useReflection - whether to use reflection in case of no window token or not
*/
fun Fragment.hideKeyboard(context: Context = MainApp.instance, useReflection: Boolean = true) {
val windowToken = view?.rootView?.windowToken
val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
windowToken?.let {
imm.hideSoftInputFromWindow(windowToken, 0)
} ?: run {
if (useReflection) {
try {
if (getKeyboardHeight(imm) > 0) {
imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS)
}
} catch (exception: Exception) {
Timber.e(exception)
}
}
}
}
fun getKeyboardHeight(imm: InputMethodManager): Int = InputMethodManager::class.java.getMethod("getInputMethodWindowVisibleHeight").invoke(imm) as Int
通过创建一个扩展来隐藏Kotlin中的软键盘,您可以全局使用该扩展。为此,需要创建一个Singleton类。
object Extensions {
fun View.hideKeyboard() {
val inputMethodManager =
context.getSystemService(AppCompatActivity.INPUT_METHOD_SERVICE)
as InputMethodManager
inputMethodManager.hideSoftInputFromWindow(windowToken, 0)
}
}
在需要隐藏键盘的片段类的活动中,可以使用mainlayout id调用此函数,如下所示
//constraintEditLayout is my main view layout, if you are using other layout like relative or linear layouts you can call with that layout id
constraintEditLayout.hideKeyboard()
对于那些寻找喷气背包的人来说,写下答案。
val keyboardController = LocalSoftwareKeyboardController.current
//for showing the keyboard
keyboardController?.show()
//for hiding the keyboard
keyboardController?.hide()
public final class UtilsKeyboard {
/**
* Sets the cursor at the end of this edit text and shows a keyboard
*/
public static void focusKeyboard(@NonNull EditText editText) {
editText.requestFocus();
editText.setSelection(editText.getText().length());
showKeyboard(editText);
}
private static void showKeyboard(@NonNull View view) {
final InputMethodManager manager = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
if (manager != null) {
manager.showSoftInput(view, InputMethodManager.SHOW_FORCED);
}
}
public static boolean hideKeyboard(@NonNull Window window) {
View view = window.getCurrentFocus();
return hideKeyboard(window, view);
}
private static boolean hideKeyboard(@NonNull Window window, @Nullable View view) {
if (view == null) {
return false;
}
InputMethodManager inputMethodManager = (InputMethodManager) window.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null) {
return inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
return false;
}
public static boolean hideKeyboard(@Nullable View view) {
if (view == null) {
return false;
}
InputMethodManager inputMethodManager = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null) {
return inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
return false;
}
/**
* This will hide the keyboard and unfocus any focused view.
*/
public static void unfocusKeyboard(@NonNull Window window) {
// When showing the bottom menu, make sure the keyboard isn't and that no view has focus
hideKeyboard(window);
final View focused = window.getCurrentFocus();
if (focused != null) focused.clearFocus();
}}