Ok, so I get theses errors
i dont know why i get this but it seems the for the rest of the world it works for them if theres another way i have to go about doing this i will change the code but it seems as of right now my eclipse doesn't like me very much
The method onKeyDown(int, KeyEvent) of type XvGForm.XvGFormClient must override or implement a supertype method
and
The method onKeyDown(int, KeyEvent) is undefined for the type WebViewClient
CODE
#Override
public boolean onKeyDown (int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.canGoBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
ok so here is the full code
package com.xtremevisiongaming.xtremevisiongamingformapp;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.KeyEvent;
import android.view.Menu;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.view.Window;
public class XvGForm extends Activity {
private WebView mWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_xv_gform);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.xtremevisiongaming.com/forum/forum.php");
mWebView.setWebViewClient(new XvGFormClient());
}
private class XvGFormClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView webview, String url)
{
webview.loadUrl(url);
return true;
}
#Override
public boolean onKeyDown (int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.canGoBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_xv_gform, menu);
return true;
}
}
Your problem is that right now the onKeyDown function is declared inside the private class XvGFormClient extends WebViewClient
You just need to move one closing brackets up by one function. I add some indentation, maybe that will help you see it:
private class XvGFormClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView webview, String url)
{
webview.loadUrl(url);
return true;
}
}
#Override
public boolean onKeyDown (int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack(); // go back in only the web view
return true;
}
return super.onKeyDown(keyCode, event);
}
Related
I have created a webview app. On pressing volume keys, my app crashes. This is the error in logcat
W/ViewRootImpl[MainActivity]: Cancelling event due to no window focus:
KeyEvent { action=ACTION_UP, keyCode=KEYCODE_VOLUME_DOWN,
scanCode=114, metaState=0, flags=0x28, repeatCount=0,
eventTime=196583031, downTime=196582864, deviceId=9, source=0x101 }
Below is my MainActivity.java file:
package app.freeairdrop.io;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
public class MainActivity extends Activity{
private ProgressBar progressBar;
private WebView webView;
private SwipeRefreshLayout mySwipeRefreshLayout;
#SuppressLint("SetJavaScriptEnabled")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setMax(100);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new WebViewClientDemo());
webView.setWebChromeClient(new WebChromeClientDemo());
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
webView.getSettings().setMediaPlaybackRequiresUserGesture(false);
webView.loadUrl("http://freeairdrop.io/");
mySwipeRefreshLayout = (SwipeRefreshLayout)this.findViewById(R.id.swipeContainer);
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
webView.reload();
mySwipeRefreshLayout.setRefreshing(false);
}
}
);
}
private class WebViewClientDemo extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Uri uri = Uri.parse(url);
if (uri.getHost() != null && (url.startsWith("https://freeairdrop.io/") || url.startsWith("https://www.freeairdrop.io/"))) {
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
progressBar.setProgress(100);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressBar.setVisibility(View.VISIBLE);
progressBar.setProgress(0);
}
}
private class WebChromeClientDemo extends WebChromeClient {
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else {
finish();
}
return super.onKeyDown(keyCode, event);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
// This method is used to detect back button
public void onBackPressed() {
if(webView.canGoBack()) {
webView.goBack();
} else {
// Let the system handle the back button
super.onBackPressed();
}
}
}
Remove
finish();
from here :
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else {
finish();
}
add focus to webview using:
<WebView android:id="#+id/webview"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:focusable="true"/>
Or
webview.requestFocus(View.FOCUS_DOWN|View.FOCUS_UP);
Remove call to finish() from here,
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else {
finish(); // Remove this, onBackPressed() should handle it.
}
return super.onKeyDown(keyCode, event);
}
I am using Navigation drawer activity and have 5 fragments, each and every fragment uses WebView to open webpage. Before I was using just one MainActivity which just opened one site and was able to go back to previous opened page easily but now I can't find anything that will let me do this. I am using this code currently in my fragments, I am using the code to go back from here and whenever I open a fragment, app just force-closes.
package com.science.s11;
import android.app.Fragment;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
public class ask extends Fragment {
public WebView mWebView;
public ProgressBar progressBar;
public LinearLayout layoutProgress;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.ampproject, container, false);
mWebView = (WebView) v.findViewById(R.id.aboutuswebViewask);
progressBar = (ProgressBar) v.findViewById(R.id.progressBarask);
layoutProgress = (LinearLayout) v.findViewById(R.id.layoutProgressask);
mWebView.setVisibility(View.GONE);
mWebView.setOnKeyListener(new View.OnKeyListener()
{
#Override
public boolean onKey(View v, int keyCode, KeyEvent event)
{
if(event.getAction() == KeyEvent.ACTION_DOWN)
{
WebView webView = (WebView) v;
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(webView.canGoBack())
{
webView.goBack();
return true;
}
break;
}
}
return false;
}
});
mWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
WebSettings settings = mWebView.getSettings();
settings.setSupportMultipleWindows(true);
settings.setBuiltInZoomControls(false);
settings.setSupportZoom(false);
settings.setDisplayZoomControls(false);
mWebView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
mWebView.setVisibility(View.VISIBLE);
layoutProgress.setVisibility(View.GONE);
progressBar.setIndeterminate(true);
super.onPageFinished(view, url);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
layoutProgress.setVisibility(View.VISIBLE);
progressBar.setIndeterminate(false);
super.onPageStarted(view, url, favicon);
}
});
if (isOnline()) {
mWebView.loadUrl("http://google.com");
} else {
mWebView.loadUrl("file:///android_asset/cti.html");
}
return v;
}
public boolean isOnline() {
ConnectivityManager cm = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
return (netInfo != null && netInfo.isConnected());
}}
Can you guys please help me?
Try this, its simple and works fine.
In all of your 5 Fragments, set the variable to public static:
public static WebView mWebView;
In your Mainactivity:
#Override
public void onBackPressed() {
if (Fragment_1.mWebView!= null) {
if (Fragment_1.mWebView.canGoBack()) {
Fragment_1.mWebView.goBack();
} else {
// do when mWebView cant go back anymore
}
}
if (Fragment_2.mWebView!= null){
if (Fragment_2.mWebView.canGoBack()) {
Fragment_2.mWebView.goBack();
} else {
// do when mWebView cant go back anymore
}
}
if (Fragment_3.mWebView!= null){
if (Fragment_3.mWebView.canGoBack()) {
Fragment_3.mWebView.goBack();
} else {
// do when mWebView cant go back anymore
}
}
if (Fragment_4.mWebView!= null){
if (Fragment_4.mWebView.canGoBack()) {
Fragment_4.mWebView.goBack();
} else {
// do when mWebView cant go back anymore
}
}
//and so on......
}
Try this:
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (mWebView.canGoBack()) {
mWebView.goBack();
} else {
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
you can make a base fragment like this
public abstract class BaseFragments extends Fragment {
abstract public int setContentView();
public void replaceFragment(Context context, Fragment fragment) {
((BaseActivity) context).getSupportFragmentManager().beginTransaction()
.replace(R.id.container, fragment).commit();
}
#Override
public void onResume() {
super.onResume();
// preferencesUtility.setuserData(context, userdata);
getView().setFocusableInTouchMode(true);
getView().requestFocus();
getView().setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_UP
&& keyCode == KeyEvent.KEYCODE_BACK) {
// Toast.makeText(context, "clicked", Toast.LENGTH_LONG)
// .show();
backPressed();
return true;
}
return false;
}
});
}
protected abstract void backPressed();
}
and override onBackPressed()in your fragment something like this
public class TestFragment extends BaseFragments {
#Override
public int setContentView() {
return R.layout.weblayout;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.weblayout, container, false);
cabmoneyview = (WebView) rootView.findViewById(R.id.webview);
return rootView;
}
#Override
protected void backPressed() {
// TODO Auto-generated method stub
}
}
hi i am facing android Webview orientation issue, when change orientation then application restart and show the page from start. I am reading different answere but no solution work me that why i am giving the my code here. kindly any android developer help me and tell me where i edit my code or add something
package com.example.edarabia;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
#SuppressLint("SetJavaScriptEnabled")
public class MainActivity extends Activity{
WebView mywebview;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(isNetworkConnected() == true){
setContentView(R.layout.activity_main);
mywebview = (WebView) findViewById(R.id.webview);
mywebview.getSettings().setJavaScriptEnabled(true);
mywebview.setWebViewClient(new myWebClient());
mywebview.loadUrl("http://www.grafdom.com/operations/projects/ma/edarabiaapp/");
mywebview.getSettings().setBuiltInZoomControls(true);
mywebview.getSettings().setLoadWithOverviewMode(false);
mywebview.getSettings().setUseWideViewPort(false);
}else{
setContentView(R.layout.splash);
showBuyDialog();
}
}
// #Override
// 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) && mywebview.canGoBack()) {
// mywebview.goBack();
// return true;
// }
// return super.onKeyDown(keyCode, event);
// }
// To handle "Back" key press event for WebView to go back to previous screen.
#Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if ((keyCode == KeyEvent.KEYCODE_BACK) && mywebview.canGoBack()) {
mywebview.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
#Override
public void onBackPressed() {
finish();
}
public class myWebClient extends WebViewClient
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
//// This method will retun boolean value if net conect then value will be true otherwise false
private boolean isNetworkConnected() {
ConnectivityManager connectivity = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null)
for (int i = 0; i < info.length; i++)
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
return false;
}
public void showBuyDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Unable to connect");
builder.setMessage("You Must have an Internet connection to use Edarabia. Please connect and try again.");
builder.setCancelable(false);
builder.setNegativeButton("Close", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
finish();
}
});
builder.show();
}
}
Add android:configChanges="keyboard|keyboardHidden|screenSize|orientation" to your activity on the AndroidManifest.xml file. It should look like this
<activity
android:name=".MainActivity"
android:configChanges="keyboard|keyboardHidden|screenSize|orientation"
android:label="#string/app_name" >
as seen here - Android WebView handling orientation changes
package woot.wat.wen;
import android.app.Activity;
import android.os.Bundle;
import android.text.Layout;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnKeyListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewGroup.MarginLayoutParams;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
public class HmmActivity extends Activity implements OnKeyListener {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//RelativeLayout Relay=(RelativeLayout) getResources().getLayout(R.layout.main);
ViewGroup group = (ViewGroup) findViewById(R.id.relativeLayout1);
TextView tv=(TextView) findViewById(R.id.tv1);
MarginLayoutParams mapara = new MarginLayoutParams(tv.getLayoutParams());
mapara.setMargins(225, 260, 120, 120);
LayoutParams params=new RelativeLayout.LayoutParams(mapara);
tv.setLayoutParams(params);
group.setFocusable(true);
group.setOnKeyListener(this);
int children = group.getChildCount();
for (int i = 0; i < children; i++) {
View child = group.getChildAt(i);
child.setFocusable(true);
child.setOnKeyListener(this);
}
//tv.setOnKeyListener(this);
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
// back=true;
// do something on back.
Toast.makeText(this, "Back key pressed", Toast.LENGTH_SHORT);
System.out.println("WTF");
return true;
}
else
return super.onKeyDown(keyCode, event);
}
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK /*&& event.getRepeatCount() == 0*/) {
// back=true;
// do something on back.
Log.d("backk", "goingoin backback");
return true;
}
else
// TODO Auto-generated method stub
return super.onKeyDown(keyCode, event);
//return false;
}
}
As you can see in the code i am trying to do something when the back key is pressed but the onkey codes never seem to be used.
The program never seems to go into onKey method whenever back is pressed,both in emulator and the device.Any idea what i am doing wrong..?
I've put the updated code.
Ok I've created a new clean project.Heres the code
package you.packag.namespac;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.widget.Toast;
public class BlActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event){
if(keyCode==KeyEvent.KEYCODE_BACK){
Toast.makeText(this, "Back key pressed", Toast.LENGTH_SHORT);
return true; //that is important
}else
return super.onKeyDown(keyCode, event);
}
}
Still the same problem.The toast is not displayed.The program flow/control goes to both the return true and return super statements each time back is pressed.Dont really see how that should be happening.Really driving me crazy.Must be something small I am doing wrong.Please help.
Try to
#Override
public boolean onKeyDown(int keyCode, KeyEvent event){
if(keyCode==KeyEvent.KEYCODE_BACK){
Toast.makeText(this, "Back key pressed", Toast.LENGTH_SHORT).show();
return true; //that is important
}else
return super.onKeyDown(keyCode, event);
}
Or in your code:
1) Put #Override before your onKey method
2) change return false to return super.onKey(keyCode, event)
Also - it's not neccesary to implement OnKeyListener
Try using public boolean onKeyDown(int keyCode, KeyEvent event) instead.
You should override onKeyDown() and set an onKeyDownListener. Anyway, you can simply override onBackPressed().
I'm having trouble getting the hardware back key on an android phone to work with a webView. The following is the code I'm using. Every time I run the app it force closes.
package com.knowideas.transithub;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.KeyEvent;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class WebViewDemo extends Activity {
private static final String LOG_TAG = "WebViewDemo";
private WebView mWebView;
private Handler mHandler = new Handler();
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// Check if the key event was the BACK key and if there's history
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.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);
}
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
mWebView = (WebView) findViewById(R.id.webView);
WebSettings webSettings = mWebView.getSettings();
webSettings.setSavePassword(false);
webSettings.setSaveFormData(false);
webSettings.setJavaScriptEnabled(true);
webSettings.setSupportZoom(false);
mWebView.setWebChromeClient(new WebChromeClient());
mWebView.addJavascriptInterface(new DemoJavaScriptInterface(), "demo");
mWebView.loadUrl("file:///android_asset/demo.html");
}
final class DemoJavaScriptInterface {
DemoJavaScriptInterface() {
}
/**
* This is not called on the UI thread. Post a runnable to invoke
* loadUrl on the UI thread.
*/
public void clickOnAndroid() {
mHandler.post(new Runnable() {
public void run() {
mWebView.loadUrl("javascript:wave()");
}
});
}
}
}
Here's my guess:
Your trying to catch the key event too late. You need to grab it before it gets to the webview. You do that by setting an onKeyListener.
here's how:
mWebView.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
// ignore the back key
return true;
}
// process normally
return false;
}
});
I can't to do more that just 'block' it -- and that's what I'm trying to find out in another question.
Best
-Yaakov
ON BACK PRESSED
//So links stay inside webview
webview.setWebViewClient(new WebViewClient());
webview.setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View view, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
WebView webView = (WebView) view;
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (webView.canGoBack()) {
webView.goBack();
return true;
}
break;
}
}
return false;
}
});