Integer :int i = (Integer) object;int i = (int) object;ClassCastException if your object isn't an Integer and aNullPointerException if your object is null.
Note: If you wish, you can burn the CD on the android-x86 iso.
AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle("Title"); alert.setMessage("Message"); // Set an EditText view to get user input final EditText input = new EditText(this); alert.setView(input); alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String value = input.getText(); // Do something with value! } }); alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { // Canceled. } }); alert.show();
Source: Android Snippets
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SharedPreferences class provides a general framework that allows you to save and retrieve persistent key-value pairs of primitive data types. You can use SharedPreferences to save any primitive data: booleans, floats, ints, longs, and strings. This data will persist across user sessions (even if your application is killed).PreferenceActivity, which provides an Activity framework for you to create user preferences, which will be automatically persisted (using shared preferences).SharedPreferences object for your application, use one of two methods:getSharedPreferences() - Use this if you need multiple preferences files identified by name, which you specify with the first parameter.getPreferences() - Use this if you need only one preferences file for your Activity. Because this will be the only preferences file for your Activity, you don't supply a name.edit() to get a SharedPreferences.Editor.putBoolean() andputString().commit()public class Calc extends Activity { public static final String PREFS_NAME = "MyPrefsFile"; @Override protected void onCreate(Bundle state){ super.onCreate(state); . . . // Restore preferences SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0); boolean silent = settings.getBoolean("silentMode", false); setSilent(silent); } @Override protected void onStop(){ super.onStop(); // We need an Editor object to make preference changes. // All objects are from android.context.Context SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0); SharedPreferences.Editor editor = settings.edit(); editor.putBoolean("silentMode", mSilentMode); // Commit the edits! editor.commit(); } }
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| Intent myIntent = new Intent(MainActivity.this, MyService.class); Bundle bundle = new Bundle();bundle.putCharSequence("extraData", data);myIntent.putExtras(bundle); pendingIntent = PendingIntent.getService(MainActivity.this, 0, myIntent, 0); |
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| public void onStart(Intent intent, int startId) { // TODO Auto-generated method stub super.onStart(intent, startId); Bundle bundle = intent.getExtras(); data = (String) bundle.getCharSequence("extraData"); smsTextToSend = (String) bundle.getCharSequence("extraSmsText"); ...} |