Android | Up And Running Java

Front 1

How to convert a arrayList to a string array ?

Back 1

String[]titles_str = titles.toArray(new String[titles.toArray().length]);

Front 2

How to assign a string array "titles_str" to a list adapter?

Back 2

this.setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, titles_str));

Front 3

How to pass a string object in the intent in the onListItemClick() method?

Back 3

1) Intent intent = new Intent(v.getContext(), DetailView.class);
2) intent.putExtra(LINK, links.get(position));
3) startActivity(intent);

Front 4

How to get the value of a String key AppMain.LINK from the intent passed in from another activity?

Back 4

url = getIntent().getStringExtra(AppMain.LINK);
url = url.replaceAll("\\s+", ""); // remove all the white space

Front 5

How to get the value of a int key AppMain.PRICEfrom the intent passed in from another activity?

Back 5

int price = getIntent().getIntExtra(AppMain.PRICE,0);

Front 6

How to set a click event listener on a button?

Back 6

button.setOnClickListener(new View.OnClickListener() {}

Front 7

How to open a url in a browser when a button is clicked?

Back 7

in the onClick()
{
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(browserIntent);
}