Question

编辑 - 更改了标题以反映真实问题。

一个非常奇怪的问题。我有一个包含WebView的布局。除最近更新到Android 7.0的一部手机外，它的功能完美无缺。我非常确定WebView不是一个问题，因为同一个应用程序中的其他网页浏览器仍能正常运行。

我开始认为这与要更改的片段中的布局有关。

mainactivity设置像这样的片段..

private void initFragment() {
        orderFragment = new OrderFragment();
        settingFragment = new SettingFragment();
        driverListFragment = new DriverListFragment();
        driverDetailFragment = new DriverDetailFragment();

        fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        ft.add(R.id.main_container, orderFragment, OrderFragment.class.getName());
        ft.add(R.id.main_container, driverListFragment, DriverListFragment.class.getName());
        ft.add(R.id.main_container, settingFragment, SettingFragment.class.getName());

        String fromActivity = getIntent().getStringExtra(FROM_TO);
        if (LANGUAGE_SETTING_PAGE.equals(fromActivity)) {
            ft.hide(driverListFragment);
            ft.hide(orderFragment);
            ft.show(settingFragment);
            group.check(R.id.main_setting);
            mOption = 3;
        } else {
            mOption = 1;
            ft.hide(driverListFragment);
            ft.hide(settingFragment);
            ft.show(orderFragment);
            group.check(R.id.main_order);
        }
        ft.commit();


    }

当按下菜单项时，我们这样做......

case R.id.main_order:
            mOption = 1;
            flushOrderListData();
            ft.show(orderFragment);
            ft.hide(settingFragment);
            ft.hide(driverListFragment);
            break;

flushOrderListData方法......

private void flushOrderListData() {

        mWebViewProgress.post(new Runnable() {
            @Override
        public void run() {

                mWebViewProgress.addJavascriptInterface(MainActivity.this, "android");
                mWebViewProgress.loadUrl(mUrl);
                orderFragment.layout.removeView(mWebViewProgress);
                orderFragment.layout.addView(mWebViewProgress);


        }
        });


    }

WebViewProgress是一个扩展WebView的类。

我100％确定问题不存在，我想在不同的布局中显示的网址是否正常。

这是XML .. 我尝试删除除了webview之外的所有内容，但这没有任何区别。

基本上，绝对没有任何内容，也没有报告错误。

        <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="64dp"
        android:paddingBottom="8dp"
        android:paddingTop="8dp"
        android:visibility="gone" >

        <TextView
            android:id="@+id/main_top_order_all"
            style="@style/main_top_order_style"
            android:text="@string/main_top_order_all" />

        <View
            android:layout_width="1dp"
            android:layout_height="wrap_content"
            android:background="@color/bg_gray" />

        <TextView
            android:id="@+id/main_top_order_money"
            style="@style/main_top_order_style"
            android:text="@string/main_top_order_money" />

        <View
            android:layout_width="1dp"
            android:layout_height="wrap_content"
            android:background="@color/bg_gray" />

        <TextView
            android:id="@+id/main_top_order_card"
            style="@style/main_top_order_style"
            android:text="@string/main_top_order_card" />
    </LinearLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="@color/bg_gray" />

    <LinearLayout
        android:id="@+id/ll_show_older"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    </LinearLayout>

    <com.city.home.view.WebViewProgress
        android:id="@+id/web_order"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

public class WebViewProgress extends WebView {

    private ProgressBar progressbar;
    private View view_layout;

    public WebViewProgress(Context context) {
        super(context);
        init(context);
    }

    public WebViewProgress(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    @Override
    public void loadUrl(String url) {
        super.loadUrl(url);
        Log.i("Loading ",url);
    }

    private void init(final Context context) {

        Log.i("Webview","init");

        progressbar = new ProgressBar(context, null, android.R.attr.progressBarStyleHorizontal);
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 4);

        progressbar.setLayoutParams(params);
        addView(progressbar);
        setJavaScript();
        setWebViewClient(new WebViewClient() {



            @Override
            public void onReceivedSslError(WebView view, final SslErrorHandler handler, SslError error){
                Log.i("WebView","received SSL");
                final AlertDialog.Builder builder = new AlertDialog.Builder(context);
                builder.setMessage("Problem with SSL Certificate");
                builder.setPositiveButton("Continue", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        handler.proceed();
                    }
                });
                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        handler.cancel();
                    }
                });
                final AlertDialog dialog = builder.create();
                dialog.show();


            }


            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                if(BuildConfig.DEBUG) {
                    Log.i("WebView", url + "");
                }
                view.loadUrl(url);
                return true;
            }


            public void onPageFinished(WebView view, String url) {
                if(BuildConfig.DEBUG) {
                    Log.i("WebViewPageFinished", url);
                }
            }


            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
                Log.i("WebViewPageStarted", url);
            }
        });
        setWebChromeClient(new WebChromeClient() {
            public boolean onConsoleMessage(ConsoleMessage cm) {

                Log.i("WebView","setWebChromeClient");

                if(BuildConfig.DEBUG) {
                    Log.d("Console",cm.message()+" "+cm.lineNumber());
                }

                return true;
            }
        });
    }

    public class WebViewClient extends android.webkit.WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            if(BuildConfig.DEBUG) {
                Log.i("WebView", url + "");
            }
            view.loadUrl(url);
            return true;
        }
    }

    public class WebChromeClient extends android.webkit.WebChromeClient {
        @Override
        public void onProgressChanged(WebView view, int newProgress) {

            if (newProgress == 100) {
                if (view_layout != null) {
                    view_layout.setVisibility(View.GONE);
                }
                progressbar.setVisibility(GONE);
            } else {
                if (progressbar.getVisibility() == GONE){
                    progressbar.setVisibility(VISIBLE);
                    }

                progressbar.setProgress(newProgress);
            }
            super.onProgressChanged(view, newProgress);


        }

        @Override
        public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
            if (Share.debug)
                Share.d("alert:" + message);
            return false;
        }
    }

    /**
     * 设置支持JavaScript
     */
    public void setJavaScript() {

        Log.i("WebView","setJavaScript");

        WebSettings ws = this.getSettings();
        ws.setJavaScriptEnabled(true);
        ws.setJavaScriptCanOpenWindowsAutomatically(true);
        ws.setDomStorageEnabled(true);

    }

OrderFragment

@SuppressLint("JavascriptInterface")
public class OrderFragment extends Fragment {
    private TextView main_top_order_all;
    private TextView main_top_order_money;
    private TextView main_top_order_card;
    public LinearLayout layout;
    public WebViewProgress mWeb;


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.activity_faq, null);
        layout = (LinearLayout) view.findViewById(R.id.layout);
        mWeb = (WebViewProgress) view.findViewById(R.id.web_order);
        main_top_order_all = (TextView) view.findViewById(R.id.main_top_order_all);
        main_top_order_money = (TextView) view.findViewById(R.id.main_top_order_money);
        main_top_order_card = (TextView) view.findViewById(R.id.main_top_order_card);

        loadData();
        return view;
    }

    /**
     * 加载数据
     */
    public void loadData() {

        String default_all = getResources().getString(R.string.main_top_order_all);
        String default_money = getResources().getString(R.string.main_top_order_money);
        String default_card = getResources().getString(R.string.main_top_order_card);
        int spColor = getResources().getColor(R.color.orange);
        main_top_order_all.setText(SpannalTextManager.getInstance().getTextHieght(default_all, "0/0.00", spColor));
        main_top_order_money.setText(SpannalTextManager.getInstance().getTextHieght(default_money, "0/0.00", spColor));
        main_top_order_card.setText(SpannalTextManager.getInstance().getTextHieght(default_card, "0/0.00", spColor));

    }

    public static OrderFragment newInstance() {
        OrderFragment fragment = new OrderFragment();
        Bundle args = new Bundle();
        fragment.setArguments(args);

        return fragment;
    }



}

Answer 1

我不确定问题是什么，但...... 我读到如果视图无法附加到窗口，那么附加到视图上的runnable的代码将不会被执行。所以，这...

 mWebViewProgress.post(new Runnable() {
            @Override
        public void run() {

                mWebViewProgress.addJavascriptInterface(MainActivity.this, "android");
                mWebViewProgress.loadUrl(mUrl);
                orderFragment.layout.removeView(mWebViewProgress);
                orderFragment.layout.addView(mWebViewProgress);


        }
        });

改为此......

Handler handler = new Handler();

        //mWebViewProgress.post(new Runnable() {
        handler.post(new Runnable() {
            @Override
            public void run() {
                mWebViewProgress.loadUrl(mUrl);
                mWebViewProgress.addJavascriptInterface(MainActivity.this, "android");
                orderFragment.layout.removeView(mWebViewProgress);
                orderFragment.layout.addView(mWebViewProgress);
            }
        });
    }

瞧，瞧！它工作正常。我想一些新代码微妙地改变了视图创建的时间。（我只是在这里猜测。）

Android 7.0在View上无法运行

1 个答案: