private void saveInFile() {
try {
FileOutputStream fos = openFileOutput(FILENAME, 0);
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fos));
Gson gson = new Gson();
gson.toJson(PurchLog.getFuelPurchases(), out);
out.flush();
fos.close();
} catch (FileNotFoundException e) {
throw new RuntimeException();
} catch (IOException e) {
throw new RuntimeException();
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_purchases);
loadFromFile();
adapter = new ArrayAdapter<FuelPurchase>(this, R.layout.list_view, PurchLog.getFuelPurchases());
adapter.notifyDataSetChanged();
Button clearButton = (Button) findViewById(R.id.clear);
clearButton.setOnClickListener(
new View.OnClickListener() {
public void onClick(View v) {
setResult(RESULT_OK);
PurchLog.clear_log();
saveInFile();
}
});
Button newButton = (Button) findViewById(R.id.new_purch);
newButton.setOnClickListener(
new View.OnClickListener() {
public void onClick(View v) {
setResult(RESULT_OK);
Intent intent = new Intent(ListPurchases.this, PurchaseEntry.class);
Gson gson = new Gson();
String fuel_purchase_list = gson.toJson(PurchLog.getFuelPurchases());
intent.putExtra("list_as_string", fuel_purchase_list);
startActivity(intent);
finish();
}
});
}
