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
Related
I have an eCommerce website and that has been running as an android app using WebView method. I have basic knowledge in android studio but not depth. My concern is wanna open Second Activity from Main Activity when user clicks on any product in app that contains link as "https://www.ecommerce.in/product/XXXXX". Here "https://www.ecommerce.in/product/" is common to all products but "XXXXX" will change to every product when user clicks on different products and this Second Activity should open using another toolbar without related to Main Activity toolbar and my code is like this:
webView.setWebViewClient(new ourViewClient()
{
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if(url.contains("https://www.ecommerce.in/product/XXXXX"))
{
Intent intent = new Intent(MainActivity.this, ProductsActivity.class);
startActivity(intent);
}
}
});
This code is not working at all. Hope, I get a solution for this and thank you for your help in advance.
First, it looks like you're trying to filter out links with a contains:
if(url.contains("https://www.ecommerce.in/product/XXXXX"))
But you've made it too restrictive. It is literally looking for "XXXXX" in the URL. Also, this doesn't really get you much in terms of security. WebViews are very dangerous. I'd suggest looking through this link for some basic suggestions.
Anyways, if you just want to open the ProductActivity it looks like all you have to do is update the test as follows:
if (url.startsWith("https://www.ecommerce.in/product/"))
Note if you need that URL then you have to pass it to the ProductActivity as part of the intent and grab it in the ProductActivity, but be sure to verify the URL before just loading it to make sure sit starts with the common part.
It might be that someone is trying to get your Activity to do things it shouldn't be.
lets say I have an application for my University web site. Where user can navigate by pressing on screen button( Actually, what I did, I categorized everything in my main layout,where each button represents each fields, if any one presses myaccountStatus, then he will be directed to that specific link) However, my web site needs user name and password every time. Where I don't want my user to bother about this at all. So my question is, is there any way I can enable auto-log in?
My application has basic core web feature implemented(WebView, zoom, java-script enabled, some back, forward, stop, reload, favorite, save for offline reading) and everything is working fine, please help with the auto-log in problem.
So far I know, I can do this by saving cookies. But I have no Idea, how they look, what are they and how to handle those thing. So, please give me a step by step tutorial for this problem. Thanks in advance.
If your are using a web-view based approach (maybe something like cordova?) you could just use the local storage or the web sql standard for html5 apps: Tutorial for Web-Sql.
If you want to store cookies you have to enable them. I'm doing this in my Phonegap/Cordova application with this small Lines of code:
#Override
public void onCreate(Bundle savedInstanceState) {
// ... do whatever you want...
// this lines allow to set cookies
try {
CookieManager.setAcceptFileSchemeCookies(true);
} catch (Throwable e) {
}
// and the default stuff for phonegap/cordova to show a splashscreen and load the application
super.onCreate(savedInstanceState);
super.setIntegerProperty("splashscreen", R.drawable.splash);
// load the index url from config adding locale support.
super.loadUrl(Config.getStartUrl() + "?locale="
+ Locale.getDefault().getLanguage(), 4000);
}
I hope this helps.
I am very new to html5, css and javascript. i have knowledge in android development.
Now i have started working on phonegap projects.
In my project i want show a loader just like a progressdialog in android when application moves from one screen to another screen or loading something.
Can any one help me to do this in html5?
I had similar need . I was able to do it using navigator object. Please find below sample code
to load data in background
function someJSFunctionLoadingData() {
navigator.notification.activityStart("Your message....", "loading");
////// some activity
navigator.notification.activityStop();
}
Further to navigate around you could use introduce a small delay ( 2 secs) and let progress bar load during that time and then direct user to the url you need. Below is the example for same
function loadMyUrl(){
navigator.notification.activityStart("Loading some url....", "loading");
setTimeout(function loadMyUrl(){
navigator.app.loadUrl('file:///android_asse/www/someurl.html');
navigator.notification.activityStop();
}, 2000 );
}
I got above idea from this link
An easy solution would be to just create a css based spinner element and set it to hidden/visible when needed via your js.
I searched and found tons of examples online here is one for example.
I've been trying to connect to twitter through android for a while.
I'm currently using this api: http://kenai.com/projects/twitterapime/forums/forum/topics/13327-Twitter-API-ME-1-8-Now-with-OAuth-support
I used their exemple with my keys and everything connects without problem. So no problem with configuration.
But in my project which has exactly the same code I can't make it work.
I believe its related with the creation of a new Intent (also this is where the eclipse is point the error)
Im trying to use a custom layout but I don't know what do I need to change to make this specific Twitter layout to work. On main activity I have a button with this:
public void onClick(View v)
{
startActivity(new Intent(this,Twitter.class));
}
on twitter class
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//this.webView = (WebView) findViewById(R.id.webView1);
WebView myWebView = new WebView(this);
setContentView(myWebView);
authenticate();
}
private void authenticate()
{
WebViewOAuthDialogWrapper page = new WebViewOAuthDialogWrapper(webView);
page.setConsumerKey(CONSUMER_KEY);
page.setConsumerSecret(CONSUMER_SECRET);
page.setCallbackUrl(CALLBACK_URL);
page.setOAuthListener(this);
page.login();
}
what requirements/adjustments are needed to make/change to the Twitter activity?
I believe I need to change something in the intent-filter but I don't even understand the work of intents. I've been only making easy layouts.
Note that I also gave internet permissions already.
Looks like i was making 2 mistakes.
First i was trying to use "webView" variable in WebViewOAuthDialogWrapper instead
"myWebView" so it wasn't initialized...
Second looks like i forgot to put the order of which the external libraries were loaded....
So be sure to put external libraries on top in eclipse project.
Lost about 2 days with these problems... oh well
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