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Open a URL when click on ImageView on Android

I get the following error below
startActivity (android.content.intent) in activity cannot be applied to (intent)
For this code - I have tried many different things - is there anything I need to add to the manifest? Thank you so much for your help!
img = (ImageView) findViewById(R.id.Fb);
img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
intent browserintent = new intent("android.intent.action.VIEW", Uri.parse("www.yahoo.com"));
startActivity(browserintent);
}
}

Change your code to this
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.yahoo.com"));
startActivity(browserIntent);

You are missing a scheme http or https in your Uri:
Intent browserintent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.yahoo.com"));
startActivity(browserintent);

Try this code
Intent intent = new Intent(Intent.ACTION_VIEW).setData(Uri.parse("http://www.yahoo.com"));
startActivity(intent);

Different methods to open a website

I want to implement a button in my app which leads to a website. I found these two easy ways to solve it and I wonder if there is actually a functional difference between these two methods?
1st way:
Button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Uri uri = Uri.parse("http://google.com/");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
});
2nd way:
Button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.addCategory(Intent.CATEGORY_BROWSABLE);
intent.setData(Uri.parse("http://www.yourURL.com"));
startActivity(intent);
}
});

According to the Intent documentation (http://developer.android.com/reference/android/content/Intent.html), the first and second parameters to the constructor merely set the Action and the Data URL (respectively).
So:
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
Would be functionally identical to:
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(uri);
The only difference I see would be the inclusion of the category in the second block, which is documented here: http://developer.android.com/reference/android/content/Intent.html#addCategory%28java.lang.String%29

Restart MainActivity or application with singleTop.

How can I restart my application or MainActivity when the activity have:
android:launchMode="singleTop"
I have tried:
Intent i = getBaseContext().getPackageManager().getLaunchIntentForPackage( getBaseContext().getPackageName() );
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
But because of singleTop this not working, there is an other way to do this?

I did my theme switcher like this:
Intent intent = getIntent();
finish();
startActivity(intent);
Basically, I'm calling finish() first, and I'm using the exact same intent this activity was started with. That seems to do the trick?
UPDATE: As pointed out by Ralf below, Activity.recreate() is the way to go in API 11 and beyond. This is preferable if you're in an API11+ environment. You can still check the current version and call the code snippet above if you're in API 10 or below. (Please don't forget to up-vote Ralf's answer!)
public void reload() {
Intent intent = getIntent();
overridePendingTransition(0, 0);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
finish();
overridePendingTransition(0, 0);
startActivity(intent);
}
or
private void restartFirstActivity()
{
Intent i = getApplicationContext().getPackageManager()
.getLaunchIntentForPackage(getApplicationContext().getPackageName() );
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK );
startActivity(i);
}

try to restart with this may this will help u
Intent i = cntxt.getPackageManager().getLaunchIntentForPackage(cntxt.getPackageName() );
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.addCategory(Intent.CATEGORY_HOME);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
cntxt.startActivity(i);

Use this:
Intent finishIntent = new Intent( this,
activity_that_you_want_to_return.class);
finishIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(finishIntent);

The constructor Intent(new ViewPager.OnPageChangeListener(){}, Class<Player>) is undefined

I'm getting an error stating: The constructor Intent(new ViewPager.OnPageChangeListener(){}, Class) is undefined
on the line: Intent intent = new Intent(this, Player.class);
and I'm not sure how this can be corrected. Has anyone incountered anything like this before? I thought using an intent in this format was pretty standard.
#Override
public void onPageSelected(int pos) {
Intent intent = new Intent(this, Player.class);
intent.putExtra("playlist", playlist);
}

If this code is in a Activity class for example called MainActivity, you can use this
Intent intent = new Intent(MainActivity.this, Player.class);
You can reference the outer class by calling OuterClass.this

Change
Intent intent = new Intent(this, Player.class);
to
Intent intent = new Intent(YourActivity.this, Player.class);

Clearning Stack of Activities unto the Top

I want to perform a logout function in which I want to clear all the activities before the logout and start a new Login Activity
Here is my code
Utilities.logoutPlayerDefaults(Profile.this);
Utilities.vibrate(Profile.this);
Intent myIntent = new Intent (Profile.this,FBLogin.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(myIntent);
But it doesn't work. If i press back button i go back to Profile

Try following way,
#Override
public void onBackPressed()
{
Intent myIntent = new Intent (Profile.this,FBLogin.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
myIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(myIntent);
super.onBackPressed();
}

Change your code to below :
Utilities.logoutPlayerDefaults(Profile.this);
Utilities.vibrate(Profile.this);
Intent myIntent = new Intent (Profile.this,FBLogin.class);
myIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(myIntent);
finish();