Develop Reference

play Youtube with webview carshes

I'm trying to play YouTube video in my application using WebView.
But when I click "Play" the application crashes.
This is my code:
public class Youtube extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.a_video_item);
WebView videoView = (WebView)findViewById(R.id.videoView);
TextView tvTitle = (TextView) findViewById(R.id.VideoTitle);
WebSettings videoViewSettings = videoView.getSettings();
videoViewSettings.setJavaScriptEnabled(true);
videoViewSettings.setPluginState(WebSettings.PluginState.ON);
videoView.setWebChromeClient(new WebChromeClient());
String youtubeID ="XSzE2LLFluE";
tvTitle.setText(youtubeID);
videoView.loadUrl("http://www.youtube.com/embed/" + youtubeID +"?autoplay=1&vq=small");
}
}
And this is my XML:
<?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/videoView"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:layout_below="#+id/VideoTitle"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"/>
<TextView
android:id="#+id/VideoTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="#string/imgdesc"
android:layout_marginRight="10dp"/>
</RelativeLayout>
I'm testing the project with Nexus 5 on Android Studio emulator.

You have to add the two lines of code:
webView.getSettings().setPluginsEnabled(true); webView.getSettings().setJavaScriptEnabled(true);
this will solve the problem. Try it and tell.

I found the issuse.
Beacuse I did the tests on Emulator without Youtube app its crashes.
On a device with Youtube app its working fine.
Now its crasheswhen i click on 'Full screen' button

Automatically Generating java code for xml layout in Eclipse

I have got an idea to get rid of some coding when we do initializion of views.
When we create an xml layout in android. At that movement same name class is created with UpperCase Letters with a dialogue with permission. And as i created views with ids. It should create Views and initialize them automatically.
for e.g
close.xml
<?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" >
<Button
android:id="#+id/closeBtn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/close_img" />
<TextView
android:id="#+id/closeText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing Text" />
</LinearLayout>
And automatically generated java code should be.
public class Close extends Activity
{
TextView CloseText;
Button CloseBtn;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CloseText = (TextView)findViewById(R.id.closeText);
CloseBtn = (Button)findViewById(R.id.closeBtn);
}
}
I can read xml and do the other stuff as I explained. But how could i add this module to eclipse and How could i create a service which work in Background all the time in eclipse.
Suggest me how to add this module(Plugin) to eclipse and i am going to use JAXB to generate Java Objects from XML document. Is there any better option.

Here in this website i find that just paste the xml and you will get your java code ready for activity class.
i had attached the link

Easiest way to have button open browser to specific URL

It's a simple app I've got and I'd like the button I've made to launch a specific URL via the browser. Could you guys give me a little info to get this going, like I've said I've got the button already to go in my app. Here's the code -- lemme' know if you need anything else
.java File
package reseeveBeta.mpi.dcasey;
import android.app.Activity;
import android.os.Bundle;
public class ReseeveBetaActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
.XML
<?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" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Welcome to Reseeve, tap register to begin account creation" />
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Register" />
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textMultiLine"
android:text="If you already have and account, please login below" >
<requestFocus />
</EditText>
</LinearLayout>

This line should open your built-in browser, with the specified url:
startActivity(new Intent(Intent.ACTION_VIEW).setData(Uri.parse("http://www.google.com")));
Your Activity should have parts like this:
//define class variables here
Button btn;
protected void onCreate(Bundle savedInstanceState)
{
//some code of yours
btn=(Button)findViewById(R.id.button1);
btn.setOnClickListener(this);
//more code of yours
}
//whatever else you have in your source code
public void onClick(View v)
{
//handle the click events here, in this case open www.google.com with the default browser
startActivity(new Intent(Intent.ACTION_VIEW).setData(Uri.parse("http://www.google.com")));
}
It might not be 100% accurate syntax, since I did just write this on my own, but you get the idea.

You can do that with Rebol 3, this easily:
REBOL []
load-gui
view [button "Go" on-action [browse http://msn.com]]
That's a fully functioning GUI program, which runs on Android AND on desktop, using the exact same code across all platforms. Take a look at:
http://rebolforum.com/index.cgi?f=printtopic&permalink=Nick25-Aug-2013/10:08:38-7:00&archiveflag=new

Simple create one WebView in xml
<WebView
android:id="#+id/web_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1.0" />
Here is the Simple java code for that
String URL="www.gtumca.co.cc";
WebView wv=(WebView)findViewById(R.layout.web_view);
onClick()
{
wv.loadUrl(URL);
}

Two Layout in one Activity, searching for solution

First Basically I need to have layout when application starts.
Second I am getting data from views i have in this layout.
Third Im setting next layout and doing hard code work with data, that I got in step 2.
I can't figure out how to do this.

You can re-use the framework class ViewAnimator without any animations. It's not the prettiest solution, but should get the job done.
main.xml:
<?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">
<ViewAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:id="#+id/viewFlipper" />
</LinearLayout>
MyActivity.java:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
viewAnimator = (ViewAnimator)findViewById(R.id.viewFlipper);
viewOne = createViewOne();
viewTwo = createViewTwo();
viewAnimator.addView(viewOne);
viewAnimator.addView(viewTwo);
...
}
private void someMethod() {
... do my background task ...
viewAnimator.setDisplayedChild(1); // viewTwo
}

have you gone through the google notepad tutorials? They explain using a list screen and loading a edit/add screen used to modify you sqlite database

creating a countdowntimer

I've created a countdown timer that counts Days:Hrs:Mins:Sec. using regular text view and updating it using my handler works fine for me.
however I want to create a cool animation for the changing digits:
1st Q:
I have 2 options as I see it to draw the numbers:
1. using a home made font applied with a style
2. using a textview/btn with no text on them and applying a backrgound image using setBackgroundResource()
--what should I choose?
2nd Q:
I've created a wrapper for ViewFlipper(not extending it)
public class transitionair extends Activity {
SpecialFlipperWrapper m_thousand;
SpecialFlipperWrapper m_hundred;
SpecialFlipperWrapper m_tens;
SpecialFlipperWrapper m_ones;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
ViewFlipper flipper_Tsnds=(ViewFlipper)findViewById(R.id.yearThousand);
m_thousand = new SpecialFlipperWrapper(flipper_Tsnds, this, 9);
ViewFlipper flipper_Hndrds=(ViewFlipper)findViewById(R.id.yearHundread);
m_hundred = new SpecialFlipperWrapper(flipper_Hndrds, this, 9);
ViewFlipper flipper_Tns=(ViewFlipper)findViewById(R.id.yearTens);
m_tens = new SpecialFlipperWrapper(flipper_Tns, this, 9);
ViewFlipper flipper_Ons=(ViewFlipper)findViewById(R.id.yearOnes);
m_ones = new SpecialFlipperWrapper(flipper_Ons, this, 9);
m_thousand.startFlipping();
m_hundred.startFlipping();
m_tens.startFlipping();
m_ones.startFlipping();
}
}
however trying to fetch one of the latter views that come after the yearThousand id are retrieving null
XML I'm Using is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<ViewFlipper
android:id="#+id/yearThousand"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ViewFlipper
android:id="#+id/yearHundread"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ViewFlipper
android:id="#+id/yearTens"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ViewFlipper
android:id="#+id/yearOnes"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
ps xml's for the animation itself are working so I left them out
Main questions is: can I make it better?
second question is: how?
third question is why is my layout returning null on the second call to it and how can I avoid it?
10XX