Splash screen while loading a url in a webview in android app
Just use mWebView.setBackgroundColor(getResources().getColor(R.color.colorPrimary));
for your mWebView
I do it by initially showing an ImageView and then once the WebView has loaded, swapping their visibility like this
WebView wv = (WebView) findViewById(R.id.webView1);
wv.getSettings().setJavaScriptEnabled(true);
wv.setWebViewClient(new WebViewClient() {
...
@Override
public void onPageFinished(WebView view, String url) {
//hide loading image
findViewById(R.id.imageLoading1).setVisibility(View.GONE);
//show webview
findViewById(R.id.webView1).setVisibility(View.VISIBLE);
}
});
wv.loadUrl("http://yoururlhere.com");
And my xml layout looks like this
<ImageView android:id="@+id/imageLoading1"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:visibility="visible"
android:src="@drawable/vert_loading"
/>
<WebView android:id="@+id/webView1"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:visibility="gone"
/>
I have one activity. 1 xml file and 1 java class. Inside xml file i have:
- WebView
- ImageView, logo of my application,
- ProgressBar and
- TextView, app version .
Code of main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:a="http://schemas.android.com/apk/res/android"
a:layout_width="fill_parent"
a:layout_height="fill_parent"
a:background="#aaaaaa"
a:orientation="vertical" >
<WebView
a:id="@+id/webView1"
a:layout_width="fill_parent"
a:layout_height="fill_parent" />
<ImageView
a:id="@+id/imageView1"
a:layout_width="wrap_content"
a:layout_height="wrap_content"
a:layout_alignParentTop="true"
a:layout_centerHorizontal="true"
a:layout_marginTop="46dp"
a:src="@drawable/logo" />
<ProgressBar
a:id="@+id/progressBar1"
a:layout_width="wrap_content"
a:layout_height="wrap_content"
a:layout_below="@+id/imageView1"
a:layout_centerHorizontal="true" />
<TextView
a:id="@+id/textView1"
a:layout_width="wrap_content"
a:layout_height="wrap_content"
a:layout_alignParentBottom="true"
a:layout_alignParentRight="true"
a:layout_marginBottom="13dp"
a:layout_marginRight="13dp"
a:text="version 1.0"
a:textAppearance="?android:attr/textAppearanceSmall"
a:textColor="#444444" />
</RelativeLayout>
Code of NovcanikActivity.java:
package zm.Nocanik;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.webkit.DownloadListener;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
public class NovcanikActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
WebView webview = (WebView) findViewById(R.id.webView1);
WebSettings websettings = webview.getSettings();
websettings.setJavaScriptEnabled(true);
websettings.setSaveFormData(false);
websettings.setSavePassword(false);
webview.loadUrl("http://m.novcanik.net/?appvers=1.0");
webview.setHorizontalScrollBarEnabled(false);
webview.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
webview.setBackgroundColor(128);
webview.setWebViewClient(new NovcanikWebViewClient());
webview.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(url));
startActivity(intent);
}
});
}
public void visible(){
WebView webview = (WebView) findViewById(R.id.webView1);
ImageView logo = (ImageView) findViewById(R.id.imageView1);
ProgressBar bar = (ProgressBar) findViewById(R.id.progressBar1);
TextView version = (TextView) findViewById(R.id.textView1);
webview.setVisibility(10);
logo.setVisibility(0);
bar.setVisibility(0);
version.setVisibility(0);
}
public void unvisible(){
WebView webview = (WebView) findViewById(R.id.webView1);
ImageView logo = (ImageView) findViewById(R.id.imageView1);
ProgressBar bar = (ProgressBar) findViewById(R.id.progressBar1);
TextView version = (TextView) findViewById(R.id.textView1);
webview.setVisibility(0);
logo.setVisibility(10);
bar.setVisibility(10);
version.setVisibility(10);
}
private class NovcanikWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView webview, String url){
webview.loadUrl(url);
return true;
}
@Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
// TODO Auto-generated method stub
view.loadUrl("file:///android_asset/noconnection.html");
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
visible();
}
@Override
public void onPageFinished(WebView view, String url) {
unvisible();
}
}
}
Sorry for no description. If there would be need for description, i will describe in detail the entire code.