I'm very new to developing android apps. I've edited this app I found, which was open source and have got it working to a good extent. There's some code that isn't being used at all (Like the preferences menu) but I haven't removed that as I simply don't want to mess it up. Anyway, when I view the website it's zoomed in.. I've researched the problem and found a few ways to fix it, but none have worked. The app files can be downloaded at this link: http://www.megafileupload.com/en/file/504860/App-zip.html
Thanks for any help!
Now, here's where the answer comes in.
You get the settings for your webview before you instantiate it. You need something like:
void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dashboard); // do this first
WebView webView = (WebView) findViewById(R.id.yourwebviewid); // either this or
either the above to tie the Java object to an xml object
or create a view and add it to some parent
View parent = (View)findViewById(R.id.yourparent_layout_for_webview); // this
WebView webView = new WebView();
parent.add(webView);
webView.getSettings().setBuiltInZoomControls(true);
Peace be on all of you!
I have to develop a questionnaire like small android app. There will be 10 questions with only 2 types of answers, i.e. either "Yes" or "No". When the user will answer all of the 10 questions, a report will be shown to user according to his answers.
Kindly tell me, how should I proceed? Do I need to use database (sqlite) or can work without it? and how should I start to develop this app?
I am new to Android.
Thank-you!
If you are new to Android, than use a web approach: Show a html page 1-10 in a webView and link it each other and finally the 10th is linked to an url, where you will do a http POST / GET with your collected 10 params. Exactly as how would you do in a "standard' web development. Also you can use several app to wrapp into Android app: Appcelerator, Phonegap and so on.
Here is a class which is a screen: (Android Activity)
public class Help extends Activity{
private WebView webViewHelp;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.help);
webViewHelp = (WebView) findViewById(R.id.webViewHelp);
webViewHelp.loadUrl("file:///android_asset/ui/help.html");
}
}
you need the help.xml build and placed into /res/layout/ folder.
Also write the help.html and place it into: /assets/ui folder and not android_asset and at is not file:///assets/ui/help.html!
in this case you have the starting point set up, than go and load with html links the next next next ... until is done, than pust url.
Somewhat easyer if you are doing in android ui development, and not web-like, but that need a bit more experience
I’ve been making android apps for like 4-5 days now. So i’m wondering if you know how I can make a web app? I have been looking through many tutorials, but none shows directly how I can make an app that displays the content from a website, and that I can decide what I want and don’t want to display. So I really just want to customize a website into an app and make my own layout. I know how the WebView and WebContent works and all that stuff, but I don’t know how I can do what I described here.
So what do I need to learn and know to make an app like that?
You can do it by fill your xml layout with EdidText for the url and Buttons for Go, back, forward and so on, finally you need webview in this xml layout.
for the java code you can check the below sample.
public class SimpleBrowser extends Activity implements OnClickListener {
WebView myBrowser;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simplebrowser);
//here the code for initialize and set yourwebView Settings.
myBrowser= (WebView) findViewById(R.id.wvBrowser);
//the below line to enable javascript if you want that
myBrowser.getSettings().setJavaScriptEnabled(true);
//here another settings could be enabled for you your webview
myBrowser.getSettings().setLoadWithOverviewMode(true);
myBrowser.getSettings().setUseWideViewPort(true);
try {
//here the default web page
ourBrow.loadUrl("http://www.google.com");
}catch (Exception e){
e.printStackTrace();
}
}
}
and for sure you need to implements your buttons using onClicklistener to be suitable for your idea.
https://www.youtube.com/watch?v=lkadcYQ6SuY&index=89&list=PL2F07DBCDCC01493A
https://www.youtube.com/watch?v=PQ94MmEg0Qw&index=90&list=PL2F07DBCDCC01493A
I've looked through dozens of pages if similar questions, none of them have any answers, so hopefully this one will be different.
I have a webview, and I do not want the zoom of the view to change from the initial zoom level I have it set to. The only thing which changes the zoom level currently is when a text box is focused.
I need to be able to do this through Java code, not using the viewport meta tag.
Just so I don't have the common responses, I have the following in my code to disable zooming, and the zoom controls:
mWebView.getSettings().setBuiltInZoomControls(false);
mWebView.getSettings().setSupportZoom(false);
I'm thinking that a possible solution is to check to see when an onFocus or even an onClick event occurs within the WebView and then zoomOut, but I'm not even sure if that is possible?
Any suggestions would be appreciated.
UPDATE This answer was written almost 6 years ago, with all the new android versions that came since then, this is most likely outdated.
This thing caused a major headache, but finally was solved thanks to setDefaultZoom(ZoomDensity.FAR);
One thing which is important is that onCreate and loadUrl get called before the WebSettings, otherwise it caused a force close situation. Here the ENTIRE code including imports (for the novice Java users)
package com.my.app;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebSettings.ZoomDensity;
import com.phonegap.*;
public class MyDroidActivity extends DroidGap {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.loadUrl("file:///android_asset/www/index.html");
WebSettings settings = appView.getSettings();
settings.setBuiltInZoomControls(false);
settings.setSupportZoom(false);
settings.setDefaultZoom(ZoomDensity.FAR);
}
}
I solved this on HTC phones by adding a WebViewClient with an empty listener for onScaleChanged. My app is PhoneGap, so this is what it looks like, but adding the listener should look the same in a non-PhoneGap app:
public class Main extends DroidGap {
private class NoScaleWebViewClient extends GapViewClient {
public NoScaleWebViewClient(DroidGap ctx) {
super(ctx);
}
public void onScaleChanged(WebView view, float oldScale, float newScale) {
Log.d("NoScaleWebViewClient", "Scale changed: " + String.valueOf(oldScale) + " => " + String.valueOf(newScale));
}
}
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.init();
setWebViewClient(appView, new NoScaleWebViewClient(this));
// disables the actual onscreen controls from showing up
appView.getSettings().setBuiltInZoomControls(false);
// disables the ability to zoom
appView.getSettings().setSupportZoom(false);
appView.getSettings().setDefaultZoom(ZoomDensity.FAR);
appView.setInitialScale(100);
}
}
Strangely, the onScaleChange listener never gets called -- by listening for the zoom, it blocks the zoom from happening. I've found that I need all the other calls (setSupportZoom, setDefaultZoom, setInitialScale) in order for this to work, and removing any of them reverts to the old, buggy behavior.
I had the same trouble. I needed to find a way to scale content of webview to exact value, everything worked fine until user starts to input text. There are methods that work on relatively new devices android 4.0+ but fails on old ones. The only way that works everywhere is setting the zoom value not in Java but in viewport like this
<meta name="viewport" content="initial-scale=.80; maximum-scale=.80; minimum-scale=.80;" />
It works on every device I tested.
Did you try to disable the user-scalable in the viewport tag? Not sure if that will work for you, but it works for me. I did not need to do anything on the java side.
<meta name="viewport" content="user-scalable=no, width=device-width" />
I have encountered this problem too, and I solved it like this:
myWebview.getSettings().setDefaultZoom(ZoomDensity.FAR);
It's runing normally on Sumsung Galaxy Tab. I hope this will help you.
The WebView has one special "thing", which I think it will trigger many questions and answers here. What happens is, that when an URL is loaded, the default Android Browser kicks in through an Intent to handle this. The zooming takes part in this browser, not in your Webview.
Solution: You need to add a WebviewClient to tell Android that you handle the browsing yourself. An example:
// Use WebView and disable zooming
public class MyWebView extends Activity {
// nested class
private class HelloWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true
}
}
private WebView mWebView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.setWebViewClient(new HelloWebViewClient());
mWebView.setInitialScale(500); // added after user comment
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setBuiltInZoomControls(false);
mWebView.getSettings().setSupportZoom(false);
mWebView.loadUrl("http://www.google.com");
}
}
My main.xml looks like this
<?xml version="1.0" encoding="utf-8"?>
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
This code disabled zooming on my HTC Desire running Android 2.2. Tapping into HTML Input fields makes no difference.
The whole topic of WebView/HelloWebViewClient as well as an important hint to handle the "Back" button correctly is documented in Hello Views, Web View. It should be required reading for anybody who uses WebView.
I believe you can set the zoom level with WebView.setInitialScale method. It takes an int as scale so I guess you would want to do something like myWebView.setInitialScale(100).
This issue has been fixed by a firmware update on HTC devices, it was (apparently) being caused by the Sense UI overriding default Android functionality incorrectly.
It is very difficult to provide information on exactly when this was corrected, however my web application no longer zooms when a text box is clicked on any HTC device with the latest firmware.
The following two lines of code will disable the "zoom" aspects of an android webview:
// disables the actual onscreen controls from showing up
mWebView.getSettings().setBuiltInZoomControls(false);
// disables the ability to zoom
mWebView.getSettings().setSupportZoom(false);
This was headache for me too, but fortunately I have found this article: How to stop zoom in on input focus on mobile devices.
Set font size of the text in the input element to 16px (or more) in the css file.
input {
font-size: 16px;
}
It is rather hack, but if nothig else works ...
can anybody tell how to run the local webapplication using android webview
I want to run my own webpages in android using web view
Thanks
I'm guessing you want something like this:
private WebView mWebView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.yourLayoutWithAWebView);
mWebView = (WebView)findViewById(R.id.yourWebViewIdFromTheLayout);
mWebView.getSettings().setJavaScriptEnabled(true); // Enable JavaScript
mWebView.loadData(yourHtmlData, "text/html", "utf-8");
}
Hopefully, that at least points you in the right direction.
Also, I'd recommend reading the documentation on the WebView, it's pretty thorough.
Just run your application on the emulator, as you normally do (and be sure to have your computer connected to internet).