Small pieces of code that can be copy/paste-ed on your project
Usually I use the following code to convert a Http response content to String:  BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); StringBuilder responseBuilder = new StringBuilder(); String line = “”; while ((line = in.readLine()) != null) { responseBuilder.append(line); } in.close(); Log.e(“WS RESPONSE”, responseBuilder.toString()); It is not a bad idea but I found over the internet that […]
Once I had this problem: I had an ExapandableListView with groups and children. When I wanted to expand a group the list was scrolling to the end every time. After a little search I’ve figured it out what the problem was. In my xml file where my ExpandableListView was created, I had this attribute: android:transcriptMode=”alwaysScroll”
You surely want to keep the screen of your phone ON and you don’t know how to do this, otherwise you wouldn’t be on our blog :P  But, you are on the right place, because in this tutorial I will show you how to keep the screen on programatically. 1. Create a new project and call
To load html data from a String into a WebView, you can use the following method: yourWebView.loadDataWithBaseURL(“x-data://base”, stringToLoadInWebView, “text/html”, “UTF-8”, null); Note that the UTF-8 charset might be different for your data so change it accordingly..
Because the Android default title bar doesn’t look too great, I thought to make a tutorial with a custom title bar that looks like the one from IOS. I do not recommend to use the design from IOS, but maybe someday you will need to make a title bar which looks like the IOS one
To set the application icon in Android you have to open the project’s Manifest.xml file and add the following attribute to the application tag: <application android:icon=”drawable resource”> Before you do that make sure you add the icon image in one of your drawable directories.. If you called your icon: app_icon.png then the application tag should look
How to add image to an email intent in Android: // build a email sending intent Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND); emailIntent.setType(“image/png”); // set the email subject emailIntent.putExtra(Intent.EXTRA_SUBJECT, “email subject”); // set the email image path for the attachment emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(“file://” + mEmailImagePath)); // set the body of the email emailIntent.putExtra(Intent.EXTRA_TEXT, “some text message”);
If you make an application and you need to open the calculator that comes with Android you can use the code bellow, but be careful because some Android phones might not have the Calculator installed or the name of the package and class might differ. 1. When you make the new project call your main
If you want to make the phone to vibrate when you click on a button from your application: 1. You have to declare in your AndroidManifest.xml the permission: <uses-permission android:name=”android.permission.VIBRATE”/> 2. Now go to the class you want to put the vibration and in onCreate put this code: final Vibrator vibe = (Vibrator) yourActivity.this.getSystemService(Context.VIBRATOR_SERVICE); //replace
If you want “listen” to the text changes from an EditText you have to use the TextWatcher. Bellow I will show you an example of TextWatcher: //first, we create an EditText EditText answer = new EditText(this); //second, we create the TextWatcher TextWatcher textWatcher = new TextWatcher() { @Override public void beforeTextChanged(CharSequence charSequence, int i, int
If you want to make a custom title in a class that extends PreferenceActivity you must put requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); BEFORE super.onCreate(savedInstanceState); Otherwise you will get a Force Close
Iv’e had a lot of trouble scrolling a ScrollView all the way to the bottom in android and I finally got the way to do it ! Here is the code: scrollView.post(new Runnable() { public void run() { scrollView.fullScroll(View.FOCUS_DOWN); } }); Hope it helps somebody !
To make an AlertDialog you have to write this code: AlertDialog.Builder alertDelete = new AlertDialog.Builder(ListsActivity.this); //HERE YOU WILL WRITE THE MESSAGE YOU WANT alertDelete.setMessage(R.string.delete_confirm); //HERE IS THE POSITIVE BUTTON. YOU HAVE TO SET THE BUTTON NAME AND A CLICK LISTENER alertDelete.setPositiveButton(getString(R.string.yes),new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { //YOUR ACTION } });
Step 1:Â Create an XML in the drawable folder and name it selected_item.xml (or any another name you want but to be suggestive). The code in this xml will be: <shape android=”http://schemas.android.com/apk/res/android” shape=”rectangle”> <solid color=”#80000000″></solid> </shape> The color=”#80000000″ is transparent black. Step 2:Â Create an XML again, in the drawable folder an name it not_selected.xml. The code
