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POLoading bar in android webview crashing app
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copied!<p>I am developing this app to display a webview of a specific page. This page will load when the intent is started. Im wanting to add a progress bar which I saw from android tutorials (<a href="http://developer.android.com/reference/android/webkit/WebView.html" rel="nofollow">http://developer.android.com/reference/android/webkit/WebView.html</a>) but for some reason, it now crashes my app when this intent is created. Any suggestions? Thanks!</p> <p>This is my error message in logcat:</p> <pre><code>10-01 13:52:35.679: E/AndroidRuntime(273): FATAL EXCEPTION: main 10-01 13:52:35.679: E/AndroidRuntime(273): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.Depauw.dpuhelpdesk/ com.Depauw.dpuhelpdesk.accounts_activity_mealplan}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.os.Handler.dispatchMessage(Handler.java:99) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.os.Looper.loop(Looper.java:123) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.ActivityThread.main(ActivityThread.java:4627) 10-01 13:52:35.679: E/AndroidRuntime(273): at java.lang.reflect.Method.invokeNative(Native Method) 10-01 13:52:35.679: E/AndroidRuntime(273): at java.lang.reflect.Method.invoke(Method.java:521) 10-01 13:52:35.679: E/AndroidRuntime(273): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 10-01 13:52:35.679: E/AndroidRuntime(273): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10-01 13:52:35.679: E/AndroidRuntime(273): at dalvik.system.NativeStart.main(Native Method) 10-01 13:52:35.679: E/AndroidRuntime(273): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content 10-01 13:52:35.679: E/AndroidRuntime(273): at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:172) 10-01 13:52:35.679: E/AndroidRuntime(273): at com.Depauw.dpuhelpdesk.accounts_activity_mealplan.Initialize(accounts_activity_mealplan.java:35) 10-01 13:52:35.679: E/AndroidRuntime(273): at com.Depauw.dpuhelpdesk.accounts_activity_mealplan.onCreate(accounts_activity_mealplan.java:23) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 10-01 13:52:35.679: E/AndroidRuntime(273): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 10-01 13:52:35.679: E/AndroidRuntime(273): ... 11 more </code></pre> <p>NEWLY MADE CODE WHICH CRASHES:</p> <pre><code>package com.Depauw.dpuhelpdesk; import android.annotation.SuppressLint; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.Window; import android.webkit.WebChromeClient; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.Toast; @SuppressLint("SetJavaScriptEnabled") public class accounts_activity_mealplan extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.webview_main); Initialize(); } private void Initialize(){ WebView mainWebView = (WebView) findViewById(R.id.webView1); WebSettings webSettings = mainWebView.getSettings(); webSettings.setJavaScriptEnabled(true); // Let's display the progress in the activity title bar, like the // browser app does. getWindow().requestFeature(Window.FEATURE_PROGRESS); mainWebView.getSettings().setJavaScriptEnabled(true); final Activity activity = this; mainWebView.setWebChromeClient(new WebChromeClient() { public void onProgressChanged(WebView view, int progress) { // Activities and WebViews measure progress with different scales. // The progress meter will automatically disappear when we reach 100% activity.setProgress(progress * 1000); } }); mainWebView.setWebViewClient(new WebViewClient() { public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); } }); mainWebView.loadUrl("http://www.depauw.edu/studentlife/campusliving/diningoptions/?plans.html"); mainWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); } } </code></pre> <p>THIS CODE IS WHAT I STARTED WITH BEFORE EDITING IT TO THE NEW CODE ABOVE:</p> <pre><code>package com.Depauw.dpuhelpdesk; import android.annotation.SuppressLint; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; @SuppressLint("SetJavaScriptEnabled") public class accounts_activity_mealplan extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.webview_main); Initialize(); } private void Initialize(){ WebView mainWebView = (WebView) findViewById(R.id.webView1); WebSettings webSettings = mainWebView.getSettings(); webSettings.setJavaScriptEnabled(true); mainWebView.setWebViewClient(new MyCustomWebViewClient()); mainWebView.loadUrl("http://www.depauw.edu/studentlife/campusliving/diningoptions/?plans.html"); mainWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); } private class MyCustomWebViewClient extends WebViewClient { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } } } </code></pre>

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