I'm new to Android development and I'm working on an application that loads a webpage through a WebView
. However, whenever I open a link within this app, there is a certain delay.
I would like a loading icon to be displayed whenever someone clicked on a link and it disappears after full page loading.
My codes are these:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="ga.traveltreasure.traveltreasureparty.MainActivity"
android:background="#000000">
<WebView
android:id="@+id/ttpWv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
tools:layout_editor_absoluteX="8dp"
android:background="#fc466b"
app:layout_constraintBottom_toBottomOf="parent">
</WebView>
</android.support.constraint.ConstraintLayout>
-
package ga.traveltreasure.traveltreasureparty;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Handler;
import android.os.StrictMode;
import android.support.annotation.StringDef;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.webkit.SslErrorHandler;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class MainActivity extends AppCompatActivity {
WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getSupportActionBar().hide();
final WebView wv = (WebView) findViewById(R.id.ttpWv);
WebSettings ws = wv.getSettings();
ws.setJavaScriptEnabled(true);
ws.setSupportZoom(false);
wv.loadUrl("LINK-PARA-A-PÁGINA");
wv.setWebViewClient(new WebViewClient()
{
public void onReceivedError(WebView webview, int i, String s, String s1)
{
wv.loadUrl("file:///android_asset/error.html");
}
});
}
}