WebView封装
1. setting设置
WebSettings settings = mWebView.getSettings();
if (mUrl.startsWith("file://")) {
settings.setAllowFileAccess(true);
settings.setJavaScriptEnabled(false);
} else {
settings.setAllowFileAccess(false);
settings.setJavaScriptEnabled(true);
}
settings.setAllowFileAccessFromFileURLs(false);
settings.setAllowUniversalAccessFromFileURLs(false);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setSupportZoom(false);
settings.setBuiltInZoomControls(false);
settings.setDisplayZoomControls(false);
settings.setDatabaseEnabled(true);
settings.setDomStorageEnabled(true);
settings.setGeolocationEnabled(true);
settings.setAppCacheEnabled(false);
settings.setUseWideViewPort(true);
settings.setLoadWithOverviewMode(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
settings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
settings.setLoadsImagesAutomatically(true);
} else {
settings.setLoadsImagesAutomatically(false);
}
mWebView.setHorizontalScrollBarEnabled(false);
mWebView.setScrollbarFadingEnabled(true);
mWebView.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
//String agent = settings.getUserAgentString() + "; name: " + AppUtils.getAppName(this) + "v" + AppUtils.getVersionName(this);
//settings.setUserAgentString(settings.getUserAgentString() + "; ****");// 追加自定义标示
if (mUrl.startsWith("lexuegaokao")) {
String version = "", client = "";
try {
version = URLEncoder.encode(AppUtils.getVersionName(this), "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
try {
client = URLEncoder.encode(Config.APP_HEADER_CLIENT, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
settings.setUserAgentString(AppUtils.getUserAgent() + " " + "lexueApp/" + version + " (Android;" + client + ")");
}
mWebView.addJavascriptInterface(new DebugJsInterface(), "justTest");
2. 监听
// WebView进度监听
mWebView.setWebViewClient(new WebViewClient() {
@SuppressLint("SetJavaScriptEnabled")
@Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Uri uri = request.getUrl();
String host = uri.getHost();
String scheme = uri.getScheme();
//String method = request.getMethod();
//Map map = request.getRequestHeaders();
Log.d("ttttt", host + ", " + scheme);
if ("file".equals(scheme)) {
view.getSettings().setJavaScriptEnabled(false);
} else {
view.getSettings().setJavaScriptEnabled(true);
}
// view.loadUrl(request.getUrl().getPath());
jumpUrl(uri);
}
return false;
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
mProgressBar.setVisibility(View.VISIBLE);
mRlReload.setVisibility(View.GONE);
}
@Override
public void onPageFinished(WebView view, String url) {
mProgressBar.setVisibility(View.GONE);
String title = view.getTitle();
if (!TextUtils.isEmpty(title)) {
mHeadBar.setTitle(title);
}
// 对于未加载图片的，后加载图片
if (!view.getSettings().getLoadsImagesAutomatically()) {
view.getSettings().setLoadsImagesAutomatically(true);
}
}
@Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
if (request.isForMainFrame()) {
mRlReload.setVisibility(View.VISIBLE);
}
} else {
mRlReload.setVisibility(View.VISIBLE);
}
}
@Override
public void onReceivedHttpError(WebView view, WebResourceRequest request, WebResourceResponse errorResponse) {
ToastManager.getInstance().showToastCenter(getThisActivity(), "http加载失败");
}
@Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
//接受所有网站的证书
handler.proceed();
}
});
// 网址进度监听
mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public void onReceivedTitle(WebView view, String title) {
if (!TextUtils.isEmpty(title)) {
mHeadBar.setTitle(title);
}
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
if (newProgress >= 100) {
mProgressBar.setVisibility(View.GONE);
} else {
mProgressBar.setVisibility(View.VISIBLE);
mProgressBar.setProgress(newProgress);
}
}
@Override
public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
// 网页弹出提示框时触发此方法
ToastManager.getInstance().showToastCenter(getThisActivity(), "Js弹窗");
result.cancel();
return true;
}
@Override
public boolean onJsConfirm(WebView view, String url, String message, JsResult result) {
// 网页弹出确认框时触发此方法
result.confirm();
return true;
}
@Override
public boolean onJsPrompt(WebView view, String url, String message, String defaultValue, JsPromptResult result) {
// 网页弹出输入框时触发此方法
result.confirm("8848");
return true;
}
}); 3. 页面内点击事件重定向
/**
* 重定向
*
* @param uri uri
*/
private void jumpUrl(Uri uri) {
if (uri == null) return;
String page = uri.getQueryParameter("page");
if (page != null) {
Intent intent = null;
switch (page) {
case "order":
intent = new Intent(this, SplashActivity.class);
break;
case "index":
intent = new Intent(this, MainActivity.class);
break;
case "login":
intent = new Intent(this, DebugWebViewActivity.class);
break;
default:
intent = new Intent(this, AppDebugActivity.class);
break;
}
if (intent != null) {
startActivity(intent);
}
} else {
Intent intent = new Intent(this, AppDebugActivity.class);
startActivity(intent);
}
}4. 生命周期处理
@Override
protected void onResume() {
super.onResume();
mWebView.onResume();
mWebView.resumeTimers();
}
@Override
protected void onPause() {
super.onPause();
mWebView.onPause();
mWebView.pauseTimers();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mWebView != null) {
mWebView.loadDataWithBaseURL(null, "", "text/html", "utf-8", null);
mWebView.clearCache(true);
mWebView.clearHistory();
mWebView.clearFormData();
mWebView.removeJavascriptInterface("justTest");
ViewParent parent = mWebView.getParent();
if (parent != null) {
((ViewGroup) parent).removeView(mWebView);
}
mWebView.getSettings().setJavaScriptEnabled(false);
mWebView.stopLoading();
mWebView.setWebViewClient(null);
mWebView.setWebChromeClient(null);
mWebView.removeAllViews();
mWebView.destroy();
mWebView = null;
}
}5. 返回键处理
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}