Java KeyEvent.hasNoModifiers方法代码示例

import android.view.KeyEvent; //导入方法依赖的package包/类
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    boolean retVal = super.dispatchKeyEvent(event);
    if (retVal && mUrlHasFocus && mUrlFocusedWithoutAnimations
            && event.getAction() == KeyEvent.ACTION_DOWN && event.isPrintingKey()
            && event.hasNoModifiers()) {
        handleUrlFocusAnimation(mUrlHasFocus);
    }
    return retVal;
}
 

import android.view.KeyEvent; //导入方法依赖的package包/类
@Override
public void handleKeyboardEvent(KeyEvent event) {
    if (event.getAction() == KeyEvent.ACTION_DOWN && mTab.getActivity() != null) {
        if (mTab.getActivity().onKeyDown(event.getKeyCode(), event)) return;

        // Handle the Escape key here (instead of in KeyboardShortcuts.java), so it doesn't
        // interfere with other parts of the activity (e.g. the URL bar).
        if (event.getKeyCode() == KeyEvent.KEYCODE_ESCAPE && event.hasNoModifiers()) {
            WebContents wc = mTab.getWebContents();
            if (wc != null) wc.stop();
            return;
        }
    }
    handleMediaKey(event);
}
 

import android.view.KeyEvent; //导入方法依赖的package包/类
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_TAB && event.getAction() == KeyEvent.ACTION_DOWN) {
        if (event.hasNoModifiers()) {
            View forward = getNextFocusForward();
            if (forward != null) return forward.requestFocus();
        } else if (event.isShiftPressed()) {
            View backward = getNextFocusBackward();
            if (backward != null) return backward.requestFocus();
        }
    } else if (keyCode == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_UP) {
        return handleEnterKeyPress();
    }
    return false;
}
 

import android.view.KeyEvent; //导入方法依赖的package包/类
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    // We need to handle focus change within the SimpleMonthView because we are simulating
    // multiple Views. The arrow keys will move between days until there is no space (no
    // day to the left, top, right, or bottom). Focus forward and back jumps out of the
    // SimpleMonthView, skipping over other SimpleMonthViews in the parent ViewPager
    // to the next focusable View in the hierarchy.
    boolean focusChanged = false;
    switch (event.getKeyCode()) {
        case KeyEvent.KEYCODE_DPAD_LEFT:
            if (event.hasNoModifiers()) {
                focusChanged = moveOneDay(isLayoutRtl());
            }
            break;
        case KeyEvent.KEYCODE_DPAD_RIGHT:
            if (event.hasNoModifiers()) {
                focusChanged = moveOneDay(!isLayoutRtl());
            }
            break;
        case KeyEvent.KEYCODE_DPAD_UP:
            if (event.hasNoModifiers()) {
                ensureFocusedDay();
                if (mHighlightedDay > 7) {
                    mHighlightedDay -= 7;
                    focusChanged = true;
                }
            }
            break;
        case KeyEvent.KEYCODE_DPAD_DOWN:
            if (event.hasNoModifiers()) {
                ensureFocusedDay();
                if (mHighlightedDay <= mDaysInMonth - 7) {
                    mHighlightedDay += 7;
                    focusChanged = true;
                }
            }
            break;
        case KeyEvent.KEYCODE_DPAD_CENTER:
        case KeyEvent.KEYCODE_ENTER:
            if (mHighlightedDay != -1) {
                onDayClicked(mHighlightedDay);
                return true;
            }
            break;
        case KeyEvent.KEYCODE_TAB: {
            int focusChangeDirection = 0;
            if (event.hasNoModifiers()) {
                focusChangeDirection = View.FOCUS_FORWARD;
            } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
                focusChangeDirection = View.FOCUS_BACKWARD;
            }
            if (focusChangeDirection != 0) {
                final ViewParent parent = getParent();
                // move out of the ViewPager next/previous
                View nextFocus = this;
                do {
                    nextFocus = nextFocus.focusSearch(focusChangeDirection);
                } while (nextFocus != null && nextFocus != this &&
                        nextFocus.getParent() == parent);
                if (nextFocus != null) {
                    nextFocus.requestFocus();
                    return true;
                }
            }
            break;
        }
    }
    if (focusChanged) {
        invalidate();
        return true;
    } else {
        return super.onKeyDown(keyCode, event);
    }
}