在子视图上调用setVisibility(View.VISIBLE)之后,Android ScrollView将滚动到顶部

里面有一个带有RelativeLayoutScrollView 。 这个RelativeLayout里面有几个View 。 其中一个ViewCheckBox 。 当CheckBox被选中/取消选中时,其他一些View应该相应地出现/消失。出现和消失的工作正常,但是每当目标View出现或消失时, ScrollView View ScrollView到顶部,而我被迫向下滚动,看看发生了什么事。

我用来控制可视性的代码是:

 public void crossCountryCheckboxClicked(View view) { CheckBox crossCountryCheckBox = (CheckBox)findViewById(R.id.checkbox_cross_country); EditText crossCountryHoursTextBox = (EditText)findViewById(R.id.cross_country_hours); if (crossCountryCheckBox.isChecked()) { crossCountryHoursTextBox.setVisibility(View.VISIBLE); } else { crossCountryHoursTextBox.setVisibility(View.GONE); } } 

并通过在XML布局文件的CheckBox元素上指定android:onClick属性来调用crossCountryCheckboxClicked()方法。

这是XML布局文件:

 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:custom="http://schemas.android.com/apk/res/logbook.app.activities" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" > <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:id="@+id/flight_date" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <EditText android:id="@+id/aeroplane_type" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/flight_date" android:hint="@string/aeroplane_type" /> <EditText android:id="@+id/aeroplane_registration" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/aeroplane_type" android:hint="@string/aeroplane_registration" /> <EditText android:id="@+id/pilot_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/aeroplane_registration" android:hint="@string/pilot_name" /> <EditText android:id="@+id/copilot_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/pilot_name" android:hint="@string/copilot_name" /> <EditText android:id="@+id/from_aerodome" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/copilot_name" android:hint="@string/from_aerodome" /> <EditText android:id="@+id/to_aerodome" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/copilot_name" android:layout_toRightOf="@id/from_aerodome" android:hint="@string/to_aerodome" /> <EditText android:id="@+id/remarks" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/from_aerodome" android:hint="@string/remarks" /> <Spinner android:id="@+id/aircraft_engine_type_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/remarks" /> <Spinner android:id="@+id/time_of_day_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/aircraft_engine_type_spinner" /> <Spinner android:id="@+id/pilot_role_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/time_of_day_spinner" /> <TextView android:id="@+id/on_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/pilot_role_spinner" android:hint="@string/on_time_hint" /> <TextView android:id="@+id/takeoff_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/on_time" android:hint="@string/takeoff_time_hint" /> <TextView android:id="@+id/landing_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/takeoff_time" android:hint="@string/landing_time_hint" /> <TextView android:id="@+id/off_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/landing_time" android:hint="@string/off_time_hint" /> <Button android:id="@+id/button_record" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/off_time" android:onClick="recordTime" android:padding="5dp" android:text="@string/button_record" /> <Button android:id="@+id/button_reset" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/off_time" android:layout_toRightOf="@id/button_record" android:onClick="resetAllTimes" android:padding="5dp" android:text="@string/button_reset" /> <CheckBox android:id="@+id/checkbox_ifr" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button_record" android:text="@string/checkbox_ifr" android:onClick="ifrCheckboxClicked" /> <CheckBox android:id="@+id/checkbox_cross_country" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button_record" android:layout_toRightOf="@id/checkbox_ifr" android:text="@string/checkbox_cross_country" android:onClick="crossCountryCheckboxClicked" /> <Spinner android:id="@+id/ifr_type_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/checkbox_ifr" android:visibility="gone" /> <TextView android:id="@+id/label_ifr_approaches" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/ifr_type_spinner" android:hint="@string/ifr_landings_label" android:visibility="gone" /> <logbook.app.custom.widgets.NumberSelector android:id="@+id/ifr_landings_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/label_ifr_approaches" android:visibility="gone" custom:orientation="vertical" /> <EditText android:id="@+id/ifr_hours" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/ifr_landings_selector" android:hint="@string/ifr_hours_hint" android:inputType="number" android:visibility="gone" /> <EditText android:id="@+id/cross_country_hours" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/ifr_hours" android:hint="@string/cross_country_hours_hint" android:inputType="number" android:visibility="gone" /> <TextView android:id="@+id/label_takeoffs_landings" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/cross_country_hours" android:hint="@string/takeoffs_landings_label" /> <logbook.app.custom.widgets.NumberSelector android:id="@+id/landings_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/label_takeoffs_landings" custom:orientation="horizontal" /> <Button android:id="@+id/button_create_log" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/landings_selector" android:onClick="createLog" android:padding="5dp" android:text="@string/button_create_log" /> </RelativeLayout> 

我怎样才能停止ScrollView滚动到顶部,每次它的孩子的visibilities之间View.GONEView.Visible之间的View.Visible

Solutions Collecting From Web of "在子视图上调用setVisibility(View.VISIBLE)之后,Android ScrollView将滚动到顶部"

尝试这个:

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation = "vertical" > <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" > <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" > <TextView android:id="@+id/flight_date" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <EditText android:id="@+id/aeroplane_type" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/flight_date" android:hint="@string/aeroplane_type" /> <EditText android:id="@+id/aeroplane_registration" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/aeroplane_type" android:hint="@string/aeroplane_registration" /> <EditText android:id="@+id/pilot_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/aeroplane_registration" android:hint="@string/pilot_name" /> <EditText android:id="@+id/copilot_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/pilot_name" android:hint="@string/copilot_name" /> <EditText android:id="@+id/from_aerodome" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/copilot_name" android:hint="@string/from_aerodome" /> <EditText android:id="@+id/to_aerodome" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/copilot_name" android:layout_toRightOf="@id/from_aerodome" android:hint="@string/to_aerodome" /> <EditText android:id="@+id/remarks" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/from_aerodome" android:hint="@string/remarks" /> <Spinner android:id="@+id/aircraft_engine_type_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/remarks" /> <Spinner android:id="@+id/time_of_day_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/aircraft_engine_type_spinner" /> <Spinner android:id="@+id/pilot_role_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/time_of_day_spinner" /> <TextView android:id="@+id/on_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/pilot_role_spinner" android:hint="@string/on_time_hint" /> <TextView android:id="@+id/takeoff_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/on_time" android:hint="@string/takeoff_time_hint" /> <TextView android:id="@+id/landing_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/takeoff_time" android:hint="@string/landing_time_hint" /> <TextView android:id="@+id/off_time" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/landing_time" android:hint="@string/off_time_hint" /> <Button android:id="@+id/button_record" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/off_time" android:onClick="recordTime" android:padding="5dp" android:text="@string/button_record" /> <Button android:id="@+id/button_reset" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/off_time" android:layout_toRightOf="@id/button_record" android:onClick="resetAllTimes" android:padding="5dp" android:text="@string/button_reset" /> <CheckBox android:id="@+id/checkbox_ifr" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button_record" android:text="@string/checkbox_ifr" android:onClick="ifrCheckboxClicked" /> <CheckBox android:id="@+id/checkbox_cross_country" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/button_record" android:layout_toRightOf="@id/checkbox_ifr" android:text="@string/checkbox_cross_country" android:onClick="crossCountryCheckboxClicked" /> <Spinner android:id="@+id/ifr_type_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@id/checkbox_ifr" android:visibility="gone" /> <TextView android:id="@+id/label_ifr_approaches" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/ifr_type_spinner" android:hint="@string/ifr_landings_label" android:visibility="gone" /> <logbook.app.custom.widgets.NumberSelector android:id="@+id/ifr_landings_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/label_ifr_approaches" android:visibility="gone" custom:orientation="vertical" /> <EditText android:id="@+id/ifr_hours" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/ifr_landings_selector" android:hint="@string/ifr_hours_hint" android:inputType="number" android:visibility="gone" /> <EditText android:id="@+id/cross_country_hours" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/ifr_hours" android:hint="@string/cross_country_hours_hint" android:inputType="number" android:visibility="gone" /> <TextView android:id="@+id/label_takeoffs_landings" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/cross_country_hours" android:hint="@string/takeoffs_landings_label" /> <logbook.app.custom.widgets.NumberSelector android:id="@+id/landings_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/label_takeoffs_landings" custom:orientation="horizontal" /> <Button android:id="@+id/button_create_log" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/landings_selector" android:onClick="createLog" android:padding="5dp" android:text="@string/button_create_log" /> </RelativeLayout> </ScrollView> </LinearLayout> 

我想你想scrolldown你在新的可见视图滚动条crossCountryHoursTextBox只是滚动你的滚动条像这样

 // scrollview at visible textbox yourscroll.smoothScrollBy(0,crossCountryHoursTextBox.getTop());