Android AutoCompleteTextView-通过编程设置值并关闭软键盘
我真的很挣扎,所以我转向你们这些好人:) 目标:在OnCreate期间,在AutoCompleteTextView中设置一个值并关闭键盘 活动:包含两个视图,AutoCompleteTextView和一个按钮 在OnCreate中,我称之为Android AutoCompleteTextView-通过编程设置值并关闭软键盘,android,Android,我真的很挣扎,所以我转向你们这些好人:) 目标:在OnCreate期间,在AutoCompleteTextView中设置一个值并关闭键盘 活动:包含两个视图,AutoCompleteTextView和一个按钮 在OnCreate中,我称之为 private void SoftKeyboardClose() { IBinder windowToken; AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R
private void SoftKeyboardClose()
{
IBinder windowToken;
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.ac_city);
Button myBtn = (Button) findViewById(R.id.btn_search);
windowToken = myBtn.getWindowToken();
if (windowToken == null)
{
windowToken = this.getWindow().getDecorView().getWindowToken();
}
if (windowToken == null)
{
windowToken = findViewById(R.id.ac_city).getWindowToken();
}
if (windowToken == null)
{
windowToken = new View(this).getWindowToken();
}
// close it
InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputManager == null)
{
Log.e(TAG, "inputmanage is null");
} else if (windowToken == null)
{
Log.e(TAG, "getWindowToken is null");
} else
{
inputManager.hideSoftInputFromWindow(windowToken, 0);
}
myBtn.requestFocus();
if (myBtn.hasFocus())
{
Log.e(TAG, "success - btn has focus");
} else
{
Log.e(TAG, "fail - btn doesn't have focus");
}
}
getWindowToken始终返回null
为了回应hpedrorodrigues,我尝试了这个
public class ZZZActivity extends Activity
{
private static final String[] COUNTRIES = new String[]{"Belgium", "France", "Italy", "Germany", "Spain"};
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_zzz);
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.activity_zzz, COUNTRIES);
final AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.myACTV);
textView.setAdapter(adapter);
closeKeyboard(this);
}
public void closeKeyboard(final Activity activity)
{
final View view = activity.getCurrentFocus();
if (view != null)
{
final InputMethodManager manager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
manager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
}
}
公共类zzzaActivity扩展活动
{
私有静态最终字符串[]国家=新字符串[]{“比利时”、“法国”、“意大利”、“德国”、“西班牙”};
@凌驾
创建时受保护的void(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_zzz);
最终阵列适配器=新阵列适配器(此,R.layout.activity_zzz,国家/地区);
最终自动完成文本视图文本视图=(自动完成文本视图)findViewById(R.id.myACTV);
setAdapter(适配器);
关闭键盘(这个);
}
公用键盘(最终活动)
{
最终视图=activity.getCurrentFocus();
如果(视图!=null)
{
最终InputMethodManager=(InputMethodManager)activity.getSystemService(Context.INPUT\u方法\u服务);
manager.hideSoftInputFromWindow(view.getWindowToken(),InputMethodManager.HIDE\u不总是);
}
}
}
activity.getCurrentFocus()返回null。焦点可能在按钮上,而不是AutoCompleteTextView 您可以使用此方法关闭键盘:
public void closeKeyboard(final Context context) {
View view = context.getCurrentFocus();
if (view == null) {
view = new View(context);
}
final InputMethodManager manager = (InputMethodManager)
context.getSystemService(Context.INPUT_METHOD_SERVICE);
manager.hideSoftInputFromWindow(
view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS
);
}
根据我的建议编写代码:
public class CountriesActivity extends Activity {
@Override
protected void onCreate(@Nullable final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.countries);
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(
this, android.R.layout.simple_dropdown_item_1line, COUNTRIES);
final AutoCompleteTextView textView = (AutoCompleteTextView)
findViewById(R.id.countries_list);
textView.setAdapter(adapter);
YourUiUtil.closeKeyboard(this);
}
private static final String[] COUNTRIES = new String[] {
"Belgium", "France", "Italy", "Germany", "Spain"
};
}
公共类CountriesActivity扩展活动{
@凌驾
创建时受保护的void(@Nullable final Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.countries);
最终ArrayAdapter适配器=新的ArrayAdapter(
这是android.R.layout.simple\u下拉列表\u item\u 1line,国家/地区);
最终自动完成文本视图文本视图=(自动完成文本视图)
findViewById(R.id.国家/地区列表);
setAdapter(适配器);
YourUiUtil.closeKeyboard(这个);
}
私有静态最终字符串[]国家/地区=新字符串[]{
“比利时”、“法国”、“意大利”、“德国”、“西班牙”
};
}
可以找到更多详细信息。试试这个
public static void hideKeyboard(Context context) {
if(((Activity) context).getCurrentFocus()!=null){
View view = ((Activity) context).getCurrentFocus();
if (view != null) {
InputMethodManager inputManager = (InputMethodManager) context
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(view.getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
}
}else {
InputMethodManager inputManager = (InputMethodManager) context
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(new View(context).getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
}
}
请参阅此-您可以尝试此操作获取窗口令牌吗。理想情况下,只要视图连接到窗口,它就应该有一个有效的窗口标记-
getCurrentFocus()。getWindowToken()
您可以创建一个新视图。在这种情况下,请参阅我的更新。“android.R.layout.simple_dropdown\u item_1line”指的是什么?activity.getCurrentFocus();返回空值