Question

我的应用中有很多活动和对话框片段。我搜索了有关检测活动的信息，并了解了onUserInterAction函数，但它仅检测活动中的活动，但在对话框片段打开时却没有检测到。

Answer 1

我通过在对话框的Window回调上创建一个包装器来解决这个问题。

YourDialogFragment.java

@Override
public void onStart() {
    super.onStart();
    UserInteractionInterceptor.wrapWindowCallback(getDialog().getWindow(), getActivity());
}

UserInteractionInterceptor.java

public class UserInteractionInterceptor {

public static void wrapWindowCallback(Window window, FragmentActivity activity) {
    Window.Callback originalCallback = window.getCallback();

    window.setCallback(new Window.Callback() {
        @Override
        public boolean dispatchKeyEvent(KeyEvent event) {
            return originalCallback.dispatchKeyEvent(event);
        }

        @Override
        public boolean dispatchKeyShortcutEvent(KeyEvent event) {
            return originalCallback.dispatchKeyShortcutEvent(event);
        }
        //This is the important override
        @Override
        public boolean dispatchTouchEvent(MotionEvent event) {
            if(event.getAction() == MotionEvent.ACTION_DOWN) {
                if(activity != null)
                    activity.onUserInteraction();
            }
            return originalCallback.dispatchTouchEvent(event);
        }

        @Override
        public boolean dispatchTrackballEvent(MotionEvent event) {
            return originalCallback.dispatchTrackballEvent(event);
        }

        @Override
        public boolean dispatchGenericMotionEvent(MotionEvent event) {
            return originalCallback.dispatchGenericMotionEvent(event);
        }

        @Override
        public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
            return originalCallback.dispatchPopulateAccessibilityEvent(event);
        }

        @Nullable
        @Override
        public View onCreatePanelView(int featureId) {
            return originalCallback.onCreatePanelView(featureId);
        }

        @Override
        public boolean onCreatePanelMenu(int featureId, Menu menu) {
            return originalCallback.onCreatePanelMenu(featureId, menu);
        }

        @Override
        public boolean onPreparePanel(int featureId, View view, Menu menu) {
            return originalCallback.onPreparePanel(featureId, view, menu);
        }

        @Override
        public boolean onMenuOpened(int featureId, Menu menu) {
            return originalCallback.onMenuOpened(featureId, menu);
        }

        @Override
        public boolean onMenuItemSelected(int featureId, MenuItem item) {
            return originalCallback.onMenuItemSelected(featureId, item);
        }

        @Override
        public void onWindowAttributesChanged(WindowManager.LayoutParams attrs) {
            originalCallback.onWindowAttributesChanged(attrs);
        }

        @Override
        public void onContentChanged() {
            originalCallback.onContentChanged();
        }

        @Override
        public void onWindowFocusChanged(boolean hasFocus) {
            originalCallback.onWindowFocusChanged(hasFocus);
        }

        @Override
        public void onAttachedToWindow() {
            originalCallback.onAttachedToWindow();
        }

        @Override
        public void onDetachedFromWindow() {
            originalCallback.onDetachedFromWindow();
        }

        @Override
        public void onPanelClosed(int featureId, Menu menu) {
            originalCallback.onPanelClosed(featureId, menu);
        }

        @Override
        public boolean onSearchRequested() {
            return originalCallback.onSearchRequested();
        }

        @TargetApi(Build.VERSION_CODES.M)
        @Override
        public boolean onSearchRequested(SearchEvent searchEvent) {
            return originalCallback.onSearchRequested(searchEvent);
        }

        @Nullable
        @Override
        public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) {
            return originalCallback.onWindowStartingActionMode(callback);
        }

        @TargetApi(Build.VERSION_CODES.M)
        @Nullable
        @Override
        public ActionMode onWindowStartingActionMode(ActionMode.Callback callback, int type) {
            return originalCallback.onWindowStartingActionMode(callback, type);
        }

        @Override
        public void onActionModeStarted(ActionMode mode) {
            originalCallback.onActionModeStarted(mode);
        }

        @Override
        public void onActionModeFinished(ActionMode mode) {
            originalCallback.onActionModeFinished(mode);
        }
    });
}

}

在DialogFragment中检测用户不活动并在一段时间后注销

1 个答案: