我是Android开发的新手。使用SwipeToRefresh中的WebView选项时遇到麻烦。我正在尝试从mounth上解决它，并且尝试了几个代码之后，它不起作用。而且Youtube video不能从WebView全屏播放...这是我的问题：如何隐藏SwipeToRefresh ProgressBar并停止运行？
这是我的MainActivity类：
public class WebViewActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private WebView myWebView;
private SwipeRefreshLayout mSwipeRefreshLayout;
//HTML5 video
private View mCustomView;
private int mOriginalSystemUiVisibility;
private WebChromeClient.CustomViewCallback mCustomViewCallback;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
OneSignal.startInit(this)
.setNotificationOpenedHandler(new ExampleNotificationOpenedHandler())
.init();
setContentView(R.layout.activity_web_view);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
MobileAds.initialize(getApplicationContext(), "ca-app-pub-App Id");
AdView mAdView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//WebView
mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.refreshlayout);
myWebView = (WebView) findViewById(R.id.webview);
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
myWebViewSettings();
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
//improve webView performance
myWebView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
myWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
myWebView.getSettings().setAppCacheEnabled(true);
myWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webSettings.setDomStorageEnabled(true);
webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
webSettings.setUseWideViewPort(true);
webSettings.setSavePassword(true);
webSettings.setSaveFormData(true);
webSettings.setEnableSmoothTransition(true);
myWebView.loadUrl("http://www.youtube.com");
//force links open in webview only
myWebView.reload(); // refreshes the WebView
}
});
myWebView.setWebViewClient(new MyWebViewClient());
}
@SuppressLint("SetJavaScriptEnabled")
@SuppressWarnings("deprecation")
private void myWebViewSettings() {
// set javascript and zoom and some other settings
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.getSettings().setBuiltInZoomControls(true);
myWebView.getSettings().setDisplayZoomControls(false);
myWebView.getSettings().setAppCacheEnabled(true);
myWebView.getSettings().setDatabaseEnabled(true);
myWebView.getSettings().setDomStorageEnabled(true);
myWebView.getSettings().setUseWideViewPort(true);
myWebView.getSettings().setLoadWithOverviewMode(true);
// enable all plugins (flash)
myWebView.getSettings().setPluginState(WebSettings.PluginState.ON);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.web_view, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.share:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
shareIntent.putExtra(Intent.EXTRA_TEXT, "Subject more ");
startActivity(Intent.createChooser(shareIntent, "Share Via"));
break;
default:
break;
}
return true;
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.facebook) {
// Handle the camera action
myWebView.loadUrl("http://www.facebook.com");
} else if (id == R.id.google) {
myWebView.loadUrl("http://www.google.com");
}
//share in navigation
else if (id == R.id.share) {
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Androidwebview");
shareIntent.putExtra(Intent.EXTRA_TEXT, "Try out this cool app www.applink.com");
startActivity(Intent.createChooser(shareIntent, "Share Via"));
}
//rate us in navigation
else if (id == R.id.rateus) {
String str = getPackageName();
try
{
startActivity(new Intent("android.intent.action.VIEW", Uri.parse("market://details?id=" + str)));
}
catch (ActivityNotFoundException localActivityNotFoundException)
{
startActivity(new Intent("android.intent.action.VIEW", Uri.parse("https://play.google.com/store/apps/details?id=" + str)));
}
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
// show error if no network
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
view.loadUrl("file:///android_asset/error.png");
}
// load from
@Override
public void onLoadResource(WebView view, String url) {
super.onLoadResource(view, url);
}
//progress bar
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
findViewById(R.id.progress1).setVisibility(View.VISIBLE);
}
@Override
public void onPageFinished(WebView view, String url) {
findViewById(R.id.progress1).setVisibility(View.GONE);
}
}
//goto previous page when pressing back button
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (myWebView.canGoBack()) {
myWebView.goBack();
} else {
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
// This fires when a notification is opened by tapping on it or one is received while the app is running.
private class ExampleNotificationOpenedHandler implements OneSignal.NotificationOpenedHandler {
@Override
public void notificationOpened(String message, JSONObject additionalData, boolean isActive) {
try {
if (additionalData != null) {
if (additionalData.has("actionSelected"))
Log.d("OneSignalExample", "OneSignal notification button with id " + additionalData.getString("actionSelected") + " pressed");
Log.d("OneSignalExample", "Full additionalData:\n" + additionalData.toString());
}
} catch (Throwable t) {
t.printStackTrace();
}
}
}
}
这里是XML文件：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/content_web_view"
android:layout_width="fill_parent"
android:layout_above="@+id/adView"
android:layout_height="fill_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.androidwebview.WebViewActivity"
tools:showIn="@layout/app_bar_web_view">
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/refreshlayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/webview"
android:layout_above="@+id/adView"
android:visible="false"
android:layout_alignParentLeft="true" />``
</android.support.v4.widget.SwipeRefreshLayout>
<FrameLayout
android:id="@+id/customViewContainer"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone"/>
<ProgressBar
android:id="@+id/progress1"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_width="80dp"
android:layout_height="80dp" />
<com.google.android.gms.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
ads:adSize="SMART_BANNER"
ads:adUnitId="@string/banner_ad_unit_id">
</com.google.android.gms.ads.AdView>
</RelativeLayout>
我有同样的问题，但我在另一个线程中发现了这个问题：
final SwipeRefreshLayout swipeLayout =
(SwipeRefreshLayout)this.findViewById(R.id.swipeToRefresh);
swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
myWebView.reload(); // refreshes the WebView
if (null != swipeLayout) {
swipeLayout.setRefreshing(false);
}
}
});