我发现 window.location = '/Mobile/Main'; 在 WebChromeClient 中不起作用。我的意思是它不会重定向到该页面，但它在任何 PC 互联网浏览器下都可以正常工作。
我已经尝试过
history.pushState(null, '', '@Url.Action("Main", "Mobile")');
window.open('@Url.Action("Main", "Mobile")');
并且它不会像正常工作那样重定向。
如何解决？
$.ajax({
type: "POST",
url: url,
contentType: "application/json; charset=utf-8",
dataType: "json",
data: JSON.stringify(params),
success: function (data) {
if (data.success === true) {
// It does not redirect in Android WebClient
window.location = '/Mobile/Main';
}
else {
$('#msgModalBody').html(data.msg);
$('#msgModal').modal({
keyboard: false
});
}
},
error: function (jqXHR, exception) {
}
}).done(function (data) {
// It does not redirect in Android WebClient
window.location = '/Mobile/Main';
});
Java
import android.Manifest;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ClipData;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.Parcelable;
import android.provider.MediaStore;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.webkit.GeolocationPermissions;
import android.webkit.PermissionRequest;
import android.webkit.ValueCallback;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class MainActivity extends AppCompatActivity {
private WebView webView;
private ValueCallback<Uri[]> mUploadMessage;
private String mCameraPhotoPath;
private static final int INPUT_FILE_REQUEST_CODE = 1;
private static final int FILECHOOSER_RESULTCODE = 1;
private static final String TAG = MainActivity.class.getSimpleName();
private WebSettings webSettings;
private long size = 0;
// Storage Permissions variables
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA
};
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode != INPUT_FILE_REQUEST_CODE || mUploadMessage == null) {
super.onActivityResult(requestCode, resultCode, data);
return;
}
try {
String file_path = mCameraPhotoPath.replace("file:","");
File file = new File(file_path);
size = file.length();
}catch (Exception e){
Log.e("Error!", "Error while opening image file" + e.getLocalizedMessage());
}
if (data != null || mCameraPhotoPath != null) {
Integer count = 0; //fix fby https://github.com/nnian
ClipData images = null;
try {
images = data.getClipData();
}catch (Exception e) {
Log.e("Error!", e.getLocalizedMessage());
}
if (images == null && data != null && data.getDataString() != null) {
count = data.getDataString().length();
} else if (images != null) {
count = images.getItemCount();
}
Uri[] results = new Uri[count];
// Check that the response is a good one
if (resultCode == Activity.RESULT_OK) {
if (size != 0) {
// If there is not data, then we may have taken a photo
if (mCameraPhotoPath != null) {
results = new Uri[]{Uri.parse(mCameraPhotoPath)};
}
} else if (data.getClipData() == null) {
results = new Uri[]{Uri.parse(data.getDataString())};
} else {
for (int i = 0; i < images.getItemCount(); i++) {
results[i] = images.getItemAt(i).getUri();
}
}
}
mUploadMessage.onReceiveValue(results);
mUploadMessage = null;
}
}
public static void verifyStoragePermissions(Activity activity) {
// Check if we have read or write permission
int writePermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
int readPermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE);
int cameraPermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.CAMERA);
if (writePermission != PackageManager.PERMISSION_GRANTED || readPermission != PackageManager.PERMISSION_GRANTED || cameraPermission != PackageManager.PERMISSION_GRANTED) {
// We don't have permission so prompt the user
ActivityCompat.requestPermissions(
activity,
PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE
);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);//will hide the title
getSupportActionBar().hide(); //hide the title bar
setContentView(R.layout.activity_main);
verifyStoragePermissions(this);
webView = (WebView)findViewById(R.id.website);
webView.addJavascriptInterface(new WebAppInterface(this), "Android");
webSettings = webView.getSettings();
webSettings.setAppCacheEnabled(true);
webSettings.setJavaScriptEnabled(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setAllowFileAccess(true);
// Очищать весь кэш https://stackoverflow.com/questions/2465432/android-webview-completely-clear-the-cache
webSettings.setSaveFormData(false);
webSettings.setCacheMode(webSettings.LOAD_NO_CACHE);
webView.clearHistory();
webView.clearFormData();
webView.clearCache(true);
// Javascript inabled on webview
//webView.getSettings().setJavaScriptEnabled(true);
// Other webview options
//webView.getSettings().setLoadWithOverviewMode(true);
//Other webview settings
//webView.getSettings().setGeolocationEnabled(true);
//webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
//webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
//webView.setScrollbarFadingEnabled(false);
//webView.getSettings().setBuiltInZoomControls(true);
//webView.getSettings().setAllowFileAccess(true);
//webView.getSettings().setSupportZoom(true);
//webView.getSettings().setLoadWithOverviewMode(true);
//webView.getSettings().setUseWideViewPort(true);
//webView.getSettings().setAllowContentAccess(true);
//webView.getSettings().setAllowFileAccessFromFileURLs(true);
//webView.getSettings().setAllowUniversalAccessFromFileURLs(true);
//webView.getSettings().setDomStorageEnabled(true);
//webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
//webView.getSettings().setAppCacheEnabled(true);
// webView.setWebViewClient(new WebViewClient());
webView.setWebViewClient(new Client());
webView.setWebChromeClient(new ChromeClient());
//if SDK version is greater of 19 then activate hardware acceleration otherwise activate software acceleration
if (Build.VERSION.SDK_INT >= 19) {
webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
}
else if(Build.VERSION.SDK_INT >=11 && Build.VERSION.SDK_INT < 19) {
webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
CookieSyncManager.createInstance(this);
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.removeAllCookie();
/* context.deleteDatabase("webview.db");
context.deleteDatabase("webviewCache.db");*/
//Load url in webview
webView.loadUrl("http://172.16.10.3:7777");
}
//helper method for clearCache() , recursive
//returns number of deleted files
static int clearCacheFolder(final File dir, final int numDays) {
int deletedFiles = 0;
if (dir!= null && dir.isDirectory()) {
try {
for (File child:dir.listFiles()) {
//first delete subdirectories recursively
if (child.isDirectory()) {
deletedFiles += clearCacheFolder(child, numDays);
}
//then delete the files and subdirectories in this dir
//only empty directories can be deleted, so subdirs have been done first
if (child.lastModified() < new Date().getTime() - numDays * DateUtils.DAY_IN_MILLIS) {
if (child.delete()) {
deletedFiles++;
}
}
}
}
catch(Exception e) {
Log.e(TAG, String.format("Failed to clean the cache, error %s", e.getMessage()));
}
}
return deletedFiles;
}
/*
* Delete the files older than numDays days from the application cache
* 0 means all files.
*/
public static void clearCache(final Context context, final int numDays) {
Log.i(TAG, String.format("Starting cache prune, deleting files older than %d days", numDays));
int numDeletedFiles = clearCacheFolder(context.getCacheDir(), numDays);
Log.i(TAG, String.format("Cache pruning completed, %d files deleted", numDeletedFiles));
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File imageFile = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
return imageFile;
}
public class ChromeClient extends WebChromeClient {
// For Android 5.0+
public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams) {
// Double check that we don't have any existing callbacks
if (mUploadMessage != null) {
mUploadMessage.onReceiveValue(null);
}
mUploadMessage = filePath;
Log.e("FileCooserParams => ", filePath.toString());
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
} catch (IOException ex) {
// Error occurred while creating the File
Log.e(TAG, "Unable to create Image File", ex);
}
// Continue only if the File was successfully created
if (photoFile != null) {
mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
} else {
takePictureIntent = null;
}
}
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
contentSelectionIntent.setType("image/*");
Intent[] intentArray;
if (takePictureIntent != null) {
intentArray = new Intent[]{takePictureIntent};
} else {
intentArray = new Intent[2];
}
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(Intent.createChooser(chooserIntent, "Select images"), 1);
return true;
}
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
// Check if the key event was the Back button and if there's history
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
// If it wasn't the Back key or there's no web page history, bubble up to the default
// system behavior (probably exit the activity)
return super.onKeyDown(keyCode, event);
}
public class Client extends WebViewClient {
ProgressDialog progressDialog;
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// If url contains mailto link then open Mail Intent
if (url.contains("mailto:")) {
// Could be cleverer and use a regex
//Open links in new browser
view.getContext().startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
// Here we can open new activity
return true;
}else {
// Stay within this webview and load url
view.loadUrl(url);
return true;
}
}
//Show loader on url load
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// Then show progress Dialog
// in standard case YourActivity.this
if (progressDialog == null) {
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Загружается...");
progressDialog.show();
}
}
// Called when all page resources loaded
public void onPageFinished(WebView view, String url) {
webView.loadUrl("javascript:(function(){ " +
"document.getElementById('android-app').style.display='none';})()");
try {
// Close progressDialog
if (progressDialog.isShowing()) {
progressDialog.dismiss();
progressDialog = null;
}
} catch (Exception exception) {
exception.printStackTrace();
}
}
}
}
最佳答案
哈! :)
我刚刚找到的大型解决方案。
我们必须模拟发布一个空表单。
HTML
<form id="myForm" action='@Url.Action("Details","Main")'></form>
JS
document.getElementById("myForm").submit();
而不是
window.location = '/Mobile/Main';
这就是窍门!
关于javascript - Android WebClient 中的 AJAX 重定向，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55451275/