android ViewPager嵌套WebView滑动冲突问题解决

电玩女神 2023-10-08 11:51 10阅读 0赞

#### android ViewPager嵌套WebView滑动冲突问题解决 ####

在ViewPager, ScrollView, ListView等容器控件中内嵌了webview，特别是webview的大小固定的情况下，会出现滑动的冲突，可以采用如下自定义的webview来完美解决。

/**
     * 主要解决viewPager嵌套webView横向滚动问题
     */
    
    public class ExtendedWebView extends WebView {
    
        public ExtendedWebView(Context context) {
            super(context);
        }
    
        public ExtendedWebView(Context context, AttributeSet attrs) {
            super(context, attrs);
        }
    
        @Override
        protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) {
            if (clampedX) {
                ViewParent viewParent = findViewParentIfNeeds(this);
                viewParent.requestDisallowInterceptTouchEvent(false);
            }
            super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);
        }
    
        @Override
        public boolean onTouchEvent(MotionEvent event) {
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                ViewParent viewParent = findViewParentIfNeeds(this);
                if (viewParent != null)
                    viewParent.requestDisallowInterceptTouchEvent(true);
            }
            return super.onTouchEvent(event);
        }
    
        private ViewParent findViewParentIfNeeds(View tag) {
            ViewParent parent = tag.getParent();
            if (parent == null) {
                return null;
            }
            if (parent instanceof ViewPager || parent instanceof AbsListView || parent instanceof ScrollView || parent instanceof HorizontalScrollView) {
                return parent;
            } else {
                if (parent instanceof View) {
                    findViewParentIfNeeds((View) parent);
                } else {
                    return parent;
                }
            }
            return parent;
        }
    }

这个方案是找的网上方案比较少的代码也不会对js进行操作

[https://github.com/mufasa08/HorizontalViewPagerWebView/blob/master/app/src/main/java/com/app/moose/horizontalviewpagerwebview/MainActivity.java][https_github.com_mufasa08_HorizontalViewPagerWebView_blob_master_app_src_main_java_com_app_moose_horizontalviewpagerwebview_MainActivity.java]

[https://jamesgzm.github.io/2019/08/29/android-ViewPager%E5%B5%8C%E5%A5%97WebView%E6%BB%91%E5%8A%A8%E5%86%B2%E7%AA%81%E9%97%AE%E9%A2%98%E8%A7%A3%E5%86%B3/][https_jamesgzm.github.io_2019_08_29_android-ViewPager_E5_B5_8C_E5_A5_97WebView_E6_BB_91_E5_8A_A8_E5_86_B2_E7_AA_81_E9_97_AE_E9_A2_98_E8_A7_A3_E5_86_B3]

[https://droidyue.com/blog/2019/01/27/webview-javascript-scrolling-issue/][https_droidyue.com_blog_2019_01_27_webview-javascript-scrolling-issue]

侵删

[https_github.com_mufasa08_HorizontalViewPagerWebView_blob_master_app_src_main_java_com_app_moose_horizontalviewpagerwebview_MainActivity.java]: https://github.com/mufasa08/HorizontalViewPagerWebView/blob/master/app/src/main/java/com/app/moose/horizontalviewpagerwebview/MainActivity.java
[https_jamesgzm.github.io_2019_08_29_android-ViewPager_E5_B5_8C_E5_A5_97WebView_E6_BB_91_E5_8A_A8_E5_86_B2_E7_AA_81_E9_97_AE_E9_A2_98_E8_A7_A3_E5_86_B3]: https://jamesgzm.github.io/2019/08/29/android-ViewPager%E5%B5%8C%E5%A5%97WebView%E6%BB%91%E5%8A%A8%E5%86%B2%E7%AA%81%E9%97%AE%E9%A2%98%E8%A7%A3%E5%86%B3/
[https_droidyue.com_blog_2019_01_27_webview-javascript-scrolling-issue]: https://droidyue.com/blog/2019/01/27/webview-javascript-scrolling-issue/