1.在Android 6.0中它不起作用。每当我打开webview时，它都是空白的，没有任何错误。 Webview在较低版本中运行良好。 2.在LinearLayout内部，我添加了webview。 在这里，我将分享我的部分代码。 4.通常使用静态lat，加载时间长。每当我尝试获取当前位置时，都会出现问题。
资产：
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition, showError);
} else {
x.innerHTML = "Geolocation is not supported by this browser.";
}
on onCreate：
if (Build.VERSION.SDK_INT >= 23) {
// Marshmallow+ Permission APIs
fuckMarshMallow();
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
if (0 != (getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE)) {
WebView.setWebContentsDebuggingEnabled(true);
}
}
webview.addJavascriptInterface(new MyJS(this), "Android");
webview.getSettings().setGeolocationDatabasePath(getFilesDir().getPath());
webview.getSettings().setSavePassword(true);
webview.getSettings().setSaveFormData(true);
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setSupportZoom(false);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.getSettings().setGeolocationEnabled(true);
webview.setInitialScale(1);
webview.getSettings().setLoadWithOverviewMode(true);
webview.getSettings().setUseWideViewPort(true);
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webview.setScrollbarFadingEnabled(false);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.getSettings().setBuiltInZoomControls(true);
webview.setWebViewClient(new Materialformfilling.GeoWebViewClient());
// Below required for geolocation
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setGeolocationEnabled(true);
webview.setWebChromeClient(new Materialformfilling.GeoWebChromeClient());
webview.getSettings().setAppCacheEnabled(true);
webview.getSettings().setDatabaseEnabled(true);
webview.getSettings().setDomStorageEnabled(true);
String url = "file:///android_asset/index.html";
webview.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int progress) {
// Activities and WebViews measure progress with different scales.
// The progress meter will automatically disappear when we reach 100%
Materialformfilling.this.setProgress(progress * 100);
}
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
});
webview.loadUrl(url);
public class GeoWebChromeClient extends android.webkit.WebChromeClient {
@Override
public void onGeolocationPermissionsShowPrompt(final String origin,
final GeolocationPermissions.Callback callback) {
// Always grant permission since the app itself requires location
// permission and the user has therefore already granted it
callback.invoke(origin, true, false);
}
}
/**
* WebViewClient subclass loads all hyperlinks in the existing WebView
*/
public class GeoWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// When user clicks a hyperlink, load in the existing WebView
view.loadUrl(url);
return true;
}
Dialog loadingDialog = new Dialog(Materialformfilling.this);
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
webViewPreviousState = PAGE_STARTED;
if (loadingDialog == null || !loadingDialog.isShowing())
loadingDialog = ProgressDialog.show(Materialformfilling.this, "",
"Loading Please Wait", true, true,
new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
// do something
}
});
loadingDialog.setCancelable(false);
}
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
public void onReceivedError(WebView view, WebResourceRequest request,
WebResourceError error) {
if (isConnected()) {
final Snackbar snackBar = Snackbar.make(rootView, "onReceivedError : " + error.getDescription(), Snackbar.LENGTH_INDEFINITE);
snackBar.setAction("Reload", new View.OnClickListener() {
@Override
public void onClick(View view) {
webview.loadUrl("file:///android_asset/index.html");
}
});
snackBar.show();
} else {
final Snackbar snackBar = Snackbar.make(rootView, "No Internet Connection ", Snackbar.LENGTH_INDEFINITE);
snackBar.setAction("Enable Data", new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivityForResult(new Intent(Settings.ACTION_WIRELESS_SETTINGS), 0);
webview.loadUrl("file:///android_asset/index.html");
snackBar.dismiss();
}
});
snackBar.show();
}
super.onReceivedError(view, request, error);
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onReceivedHttpError(WebView view,
WebResourceRequest request, WebResourceResponse errorResponse) {
if (isConnected()) {
final Snackbar snackBar = Snackbar.make(rootView, "HttpError : " + errorResponse.getReasonPhrase() + +errorResponse.getStatusCode(), Snackbar.LENGTH_INDEFINITE);
snackBar.setAction("Reload", new View.OnClickListener() {
@Override
public void onClick(View view) {
webview.loadUrl("file:///android_asset/index.html");
}
});
snackBar.show();
} else {
final Snackbar snackBar = Snackbar.make(rootView, "No Internet Connection ", Snackbar.LENGTH_INDEFINITE);
snackBar.setAction("Enable Data", new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivityForResult(new Intent(Settings.ACTION_WIRELESS_SETTINGS), 0);
webview.loadUrl("file:///android_asset/index.html");
snackBar.dismiss();
}
});
snackBar.show();
}
super.onReceivedHttpError(view, request, errorResponse);
}
@Override
public void onPageFinished(WebView view, String url) {
if (webViewPreviousState == PAGE_STARTED) {
if (null != loadingDialog) {
loadingDialog.dismiss();
loadingDialog = null;
Constant.print("check 1111111111111111");
}
}
}
}
/**
* Check if there is any connectivity
*
* @return is Device Connected
*/
public boolean isConnected() {
ConnectivityManager cm = (ConnectivityManager)
this.getSystemService(Context.CONNECTIVITY_SERVICE);
if (null != cm) {
NetworkInfo info = cm.getActiveNetworkInfo();
return (info != null && info.isConnected());
}
return false;
}
@TargetApi(Build.VERSION_CODES.M)
private void fuckMarshMallow() {
List<String> permissionsNeeded = new ArrayList<String>();
final List<String> permissionsList = new ArrayList<String>();
if (!addPermission(permissionsList, Manifest.permission.ACCESS_FINE_LOCATION))
permissionsNeeded.add("Show Location");
if (permissionsList.size() > 0) {
if (permissionsNeeded.size() > 0) {
// Need Rationale
String message = "App need access to " + permissionsNeeded.get(0);
for (int i = 1; i < permissionsNeeded.size(); i++)
message = message + ", " + permissionsNeeded.get(i);
showMessageOKCancel(message,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
}
});
return;
}
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
return;
}
Toast.makeText(Materialformfilling.this, "No new Permission Required- Launching App .You are Awesome!!", Toast.LENGTH_SHORT)
.show();
}
private void showMessageOKCancel(String message, DialogInterface.OnClickListener okListener) {
new AlertDialog.Builder(Materialformfilling.this)
.setMessage(message)
.setPositiveButton("OK", okListener)
.setNegativeButton("Cancel", null)
.create()
.show();
}
@TargetApi(Build.VERSION_CODES.M)
private boolean addPermission(List<String> permissionsList, String permission) {
if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
permissionsList.add(permission);
// Check for Rationale Option
if (!shouldShowRequestPermissionRationale(permission))
return false;
}
return true;
}
请帮帮我