Reputation: 27
I meet a serious problems when load url with android WebView, in case a page can not load url and the page is blank, other pages which use WebView are not load out the page and i must exit my app to reboot it, so the WebView page can load url success. I do not know why this happens?
Can somebody tell me Why and How to solve this questions?
Thank you.
Upvotes: 0
Views: 529
Reputation: 1012
Try this code may work
WebViewSampleActivity.java
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class WebViewSampleActivity extends Activity {
private WebView webview;
private static final String TAG = "Main";
private ProgressDialog progressBar;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
this.webview = (WebView)findViewById(R.id.webView1);
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
progressBar = ProgressDialog.show(WebViewSampleActivity.this, "WebView Example", "Loading...");
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.i(TAG, "Processing webview url click...");
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url) {
Log.i(TAG, "Finished loading URL: " +url);
if (progressBar.isShowing()) {
progressBar.dismiss();
}
}
@SuppressWarnings("deprecation")
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Log.e(TAG, "Error: " + description);
Toast.makeText(WebViewSampleActivity.this, "Oh no! " + description, Toast.LENGTH_SHORT).show();
alertDialog.setTitle("Error");
alertDialog.setMessage(description);
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alertDialog.show();
}
});
webview.loadUrl("http://www.google.com");
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<WebView
android:id="@+id/webView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" />
</LinearLayout>
Add the internet permission in the manifest
<uses-permission android:name="android.permission.INTERNET"/>
Upvotes: 0
Reputation: 4182
Try this on Your activity in Mainfest set this
android:onHistory="true"
if You have problem also when not result than try this code also
On Create
webview = (WebView) findViewById(R.id.webview);
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
//ws.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.i(TAG, "Processing webview url click..."+url);
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url) {
Log.e(TAG, "Finished loading URL: " + url);
//webview.reload();
}
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
}
});
webview.loadUrl("your Url");
Inside the class
@Override
public void onBackPressed() {
if (webview.canGoBack()) {
webview.goBack();
} else {
finish();
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
//Display confirmation here, finish() activity.
if (webview.canGoBack()) {
webview.goBack();
} else {
finish();
}
return true;
}
return super.onKeyDown(keyCode, event);
}
Upvotes: 2