本文整理匯總了Java中android.view.ViewGroup.requestChildFocus方法的典型用法代碼示例。如果您正苦於以下問題：Java ViewGroup.requestChildFocus方法的具體用法？Java ViewGroup.requestChildFocus怎麽用？Java ViewGroup.requestChildFocus使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類android.view.ViewGroup的用法示例。
在下文中一共展示了ViewGroup.requestChildFocus方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: scrollToAndFocus
import android.view.ViewGroup; //導入方法依賴的package包/類
@Override
public void scrollToAndFocus() {
ViewGroup parent = (ViewGroup) getParent();
if (parent != null) parent.requestChildFocus(this, this);
requestFocus();
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
}
示例2: scrollToAndFocus
import android.view.ViewGroup; //導入方法依賴的package包/類
@Override
public void scrollToAndFocus() {
updateDisplayedError(!isValid());
UiUtils.hideKeyboard(mDropdown);
ViewGroup parent = (ViewGroup) mDropdown.getParent();
if (parent != null) parent.requestChildFocus(mDropdown, mDropdown);
mDropdown.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
}
示例3: requestChildFocus
import android.view.ViewGroup; //導入方法依賴的package包/類
/** Scroll the layout so that the focused child is on screen. */
private void requestChildFocus() {
ViewGroup parent = (ViewGroup) mLayout.getParent();
if (mLayout.getParent() == null) return;
// Scroll the parent to make the focused child visible.
if (mFocusedChild != null) parent.requestChildFocus(mLayout, mFocusedChild);
// {@link View#requestChildFocus} fails to account for children changing their height, so
// the scroll value may be past the actual maximum.
int viewportHeight = parent.getBottom() - parent.getTop();
int scrollMax = Math.max(0, mLayout.getMeasuredHeight() - viewportHeight);
if (parent.getScrollY() > scrollMax) parent.setScrollY(scrollMax);
}