android.view.accessibility.AccessibilityNodeInfo#ACTION_ACCESSIBILITY_FOCUS源码实例Demo

下面列出了android.view.accessibility.AccessibilityNodeInfo#ACTION_ACCESSIBILITY_FOCUS 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： LaunchEnr 文件： OverviewScreenAccessibilityDelegate.java

@Override
public boolean performAccessibilityAction(View host, int action, Bundle args) {
    if (host != null) {
        if (action == AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS ) {
            int index = mWorkspace.indexOfChild(host);
            mWorkspace.setCurrentPage(index);
        } else if (action == MOVE_FORWARD) {
            movePage(mWorkspace.indexOfChild(host) + 1, host);
            return true;
        } else if (action == MOVE_BACKWARD) {
            movePage(mWorkspace.indexOfChild(host) - 1, host);
            return true;
        }
    }

    return super.performAccessibilityAction(host, action, args);
}

源代码2 项目： Trebuchet 文件： OverviewScreenAccessibilityDelegate.java

@Override
public boolean performAccessibilityAction(View host, int action, Bundle args) {
    if (host != null) {
        if (action == AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS ) {
            int index = mWorkspace.indexOfChild(host);
            mWorkspace.setCurrentPage(index);
        } else if (action == MOVE_FORWARD) {
            movePage(mWorkspace.indexOfChild(host) + 1, host);
            return true;
        } else if (action == MOVE_BACKWARD) {
            movePage(mWorkspace.indexOfChild(host) - 1, host);
            return true;
        }
    }

    return super.performAccessibilityAction(host, action, args);
}

源代码3 项目： android-chromium 文件： BrowserAccessibilityManager.java

/**
 * @see AccessibilityNodeProvider#performAction(int, int, Bundle)
 */
protected boolean performAction(int virtualViewId, int action, Bundle arguments) {
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0) {
        return false;
    }

    switch (action) {
        case AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS:
            if (mAccessibilityFocusId == virtualViewId) {
                return true;
            }

            mAccessibilityFocusId = virtualViewId;
            sendAccessibilityEvent(mAccessibilityFocusId,
                    AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
            return true;
        case AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS:
            if (mAccessibilityFocusId == virtualViewId) {
                mAccessibilityFocusId = View.NO_ID;
            }
            return true;
        case AccessibilityNodeInfo.ACTION_CLICK:
            nativeClick(mNativeObj, virtualViewId);
            break;
        case AccessibilityNodeInfo.ACTION_FOCUS:
            nativeFocus(mNativeObj, virtualViewId);
            break;
        case AccessibilityNodeInfo.ACTION_CLEAR_FOCUS:
            nativeBlur(mNativeObj);
            break;
        default:
            break;
    }
    return false;
}

源代码4 项目： android-chromium 文件： BrowserAccessibilityManager.java

/**
 * @see AccessibilityNodeProvider#performAction(int, int, Bundle)
 */
protected boolean performAction(int virtualViewId, int action, Bundle arguments) {
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0) {
        return false;
    }

    switch (action) {
        case AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS:
            if (mAccessibilityFocusId == virtualViewId) {
                return true;
            }

            mAccessibilityFocusId = virtualViewId;
            sendAccessibilityEvent(mAccessibilityFocusId,
                    AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
            return true;
        case AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS:
            if (mAccessibilityFocusId == virtualViewId) {
                mAccessibilityFocusId = View.NO_ID;
            }
            return true;
        case AccessibilityNodeInfo.ACTION_CLICK:
            nativeClick(mNativeObj, virtualViewId);
            break;
        case AccessibilityNodeInfo.ACTION_FOCUS:
            nativeFocus(mNativeObj, virtualViewId);
            break;
        case AccessibilityNodeInfo.ACTION_CLEAR_FOCUS:
            nativeBlur(mNativeObj);
            break;
        default:
            break;
    }
    return false;
}

源代码5 项目： brailleback 文件： DefaultNavigationMode.java

private boolean activateNode(AccessibilityNodeInfoCompat node,
        int position) {
    if (node == null) {
        return false;
    }
    AccessibilityNodeInfoRef current =
            AccessibilityNodeInfoRef.unOwned(node);
    try {
        do {
            LogUtils.log(this, Log.VERBOSE,
                    "Considering to click: %s",
                    current.get().getInfo());
            int supportedActions = current.get().getActions();
            int action = 0;
            // For edit texts, the click action doesn't currently focus
            // the view, so we special case it here.
            // TODO: Revise when that changes.
            if (AccessibilityNodeInfoUtils.nodeMatchesClassByType(
                    mAccessibilityService, current.get(),
                    EditText.class)) {
                if ((supportedActions & AccessibilityNodeInfo.ACTION_FOCUS)
                        != 0) {
                    action = AccessibilityNodeInfo.ACTION_FOCUS;
                } else {
                    // Put accessibility focus on the field.  If it is
                    // already focused and the IME is selected, that will
                    // activate the editing.
                    action = AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS;
                }
            } else if (position >= 0 && isSelfBrailled(current.get())
                    && (supportedActions
                            & AccessibilityNodeInfo.ACTION_CLICK) != 0) {
                // Generate a fake "action". For instance, a click at
                // position 33 maps to -275000033.
                // TODO: Remove this hack when a better way to pass this
                // information exists.
                int fakeAction = ACTION_BRAILLE_CLICK_MAX - position;
                if (fakeAction < ACTION_BRAILLE_CLICK_MIN) {
                    LogUtils.log(this, Log.WARN,
                        "underflow activating node %s at position %d",
                        current.get(), position);
                    fakeAction = ACTION_BRAILLE_CLICK_MIN;
                } else if (fakeAction > ACTION_BRAILLE_CLICK_MAX) {
                    LogUtils.log(this, Log.WARN,
                        "overflow activating node %s at position %d",
                        current.get(), position);
                    fakeAction = ACTION_BRAILLE_CLICK_MAX;
                }
                if (WebInterfaceUtils.performSpecialAction(current.get(),
                            fakeAction)) {
                    return true;
                }
            } else if ((supportedActions
                            & AccessibilityNodeInfo.ACTION_CLICK) != 0) {
                action = AccessibilityNodeInfo.ACTION_CLICK;
            }
            if (action != 0 && current.get().performAction(action)) {
                return true;
            } else {
                LogUtils.log(this, Log.VERBOSE, "Action %d failed",
                        action);
            }
        } while (current.parent());
    } finally {
        current.recycle();
    }
    LogUtils.log(this, Log.VERBOSE, "Click action failed");
    return false;
}

方法所在类

android.view.accessibility.AccessibilityNodeInfo