EDIT: Here's the video showing the problem: www.youtube.com/watch?v=5ZZsuMH5T9k I'm really stuck here :/
--
I have an activity which consists of a webview and a button at the bottom. I set the window of the activity to fullscreen using this code in onCreate
:
@Override
public void onCreate(Bundle savedInstanceState) {
InstaFetchApplication.applyCurrentTheme(this);
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
requestWindowFeature(Window.FEATURE_PROGRESS);
if (UserPreferences.getIsFullScreenReadingEnabled(this)) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
// this just do this: window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
ActivityUtils.toggleFullScreen(this, true);
}
setContentView(R.layout.view_article);
// ...
}
The problem is that most of the time the webview seems to "push" the button off the screen. Here's the screenshot:
(larger version)
What I would expect to see (and sometimes I do) is here:
(larger version)
Here's the layout I'm using (note that in my app the top layout has to be a RelativeLayout):
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout_test"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:id="@+id/button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Click me!"
/>
<WebView
android:id="@+id/web_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@id/button"
/>
</RelativeLayout>
I also noticed that if you turn off all animations on the device using system settings, the issue is gone (though there's this glitch when the whole view has a top margin and then it jumps back in the correct position).
Did anyone encounter similar problem and know how to fix it?
Finally I found the answer. Adding WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
flag to the window solved my problem.
See this post: flag_fullscreen + windowNoTitle == button focus bug.
I just added a button to the Hello WebView tutorial, and everything seems to look right. Then I converted main.xml
from LinearLayout
to RelativeLayout
, and everything still seems to look right. I think you are making things too complicated. :-) Try removing most of that initialization code from onCreate()
and just specify it in the XML.
Here is my project.
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.hellowebview"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".HelloWebViewActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
HelloWebViewActivity.java:
package com.example.android.hellowebview;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class HelloWebViewActivity extends Activity {
WebView mWebView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_rl);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.setWebViewClient(new HelloWebViewClient());
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.google.com");
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}
main_ll.xml (LinearLayout):
<?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/webview"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
/>
<Button
android:id="@+id/mainbtn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="@string/btn_label"
/>
</LinearLayout>
main_rl.xml (RelativeLayout):
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<WebView
android:id="@+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/mainbtn"
/>
<Button
android:id="@+id/mainbtn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="@string/btn_label"
/>
</RelativeLayout>
strings.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, HelloWebViewActivity!</string>
<string name="app_name">HelloWebView</string>
<string name="btn_label">Push Me</string>
</resources>
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