Android searchView下拉菜单屏幕宽度 [英] Android searchView drop down menu screen width
问题描述
情况:
我的appcompat工具栏中有一个searchview小部件，可通过sqlitedatabase自定义建议.
I have a searchview widget in my appcompat toolbar that allows custom suggestions via sqlitedatabase.
问题:
我无法将下拉建议列表扩展到整个屏幕宽度.列表宽度充其量几乎是屏幕的宽度，除了左侧和右侧的小边距/填充问题.如何使下拉列表与屏幕具有相同的宽度?
I am having trouble expanding the drop down suggestions list to be the full width of the screen. At best, the list width is almost the width of the screen except for small margin/padding problems on the left and right side. How do I make the drop down list have the same width as the screen?
我尝试过的事情:
AutoCompleteText的setPadding，setRight/setLeft，setDropDownHorizontalOffset，设置布局参数以及将宽度设置为match_parent.
AutoCompleteText's setPadding, setRight/setLeft, setDropDownHorizontalOffset, setting layout params, and setting width to be match_parent.
menu/search.xml
menu/search.xml
<item
android:id="@+id/search_restaurant"
android:title="Search"
android:icon="@drawable/search"
android:orderInCategory="2"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="always"/>
res/search_view_suggestions_list_item
res/search_view_suggestions_list_item
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="48dp"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:background="@android:color/white"
android:gravity="center_vertical"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:minHeight="?android:attr/listPreferredItemHeightSmall"/>
activity/Activity.java
activity/Activity.java
MenuItem searchItem = menu.findItem(R.id.search_restaurant);
searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setQueryHint("Search Restaurant");
searchView.setOnQueryTextListener(this);
searchView.setOnSuggestionListener(this);
final AutoCompleteTextView searchAutoCompleteTextView = (AutoCompleteTextView) searchView
.findViewById(R.id.search_src_text);
searchAutoCompleteTextView.setThreshold(1);
searchAutoCompleteTextView.setDropDownWidth(ViewGroup.LayoutParams.MATCH_PARENT);
// Tried to change margins/padding here
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams)
searchAutoCompleteTextView.getLayoutParams();
params.setMargins(0, 0, 0, 0);
searchAutoCompleteTextView.setLayoutParams(params);
searchAutoCompleteTextView.setPadding(0, 0, 0, 0);
searchAutoCompleteTextView.setDropDownHorizontalOffset(-100);
searchAutoCompleteTextView.setPadding(0,0,0,0);
searchAutoCompleteTextView.setLeft(0);
final View dropDownSuggestions = searchView.findViewById(searchAutoCompleteTextView
.getDropDownAnchor());
if (dropDownSuggestions != null) {
dropDownSuggestions.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
int point[] = new int[2];
dropDownSuggestions.getLocationOnScreen(point);
int dropDownPadding = point[0] + searchAutoCompleteTextView
.getDropDownHorizontalOffset();
Rect screenSize = new Rect();
getWindowManager().getDefaultDisplay().getRectSize(screenSize);
int screenWidth = screenSize.width();
searchAutoCompleteTextView.setDropDownWidth(screenWidth * 2);
}
});
}
推荐答案
所需的宽度大小可以通过使用Wrap content来实现. 试试下面的代码: searchAutoCompleteTextView.setDropDownWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
The size of the width you want, can be achieve by using Wrap content . Try this code: searchAutoCompleteTextView.setDropDownWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
通过此链接时，我得到了这个答案:
I came to this answer when i went through this link:
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