Android Java Tips
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********************************************************************************
## JSON
********************************************************************************
new ReadJSONFeedTask().execute(url);
public String readJSONFeed(String URL) {
StringBuilder stringBuilder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(URL);
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(
new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
stringBuilder.append(line);
}
} else {
Log.e("JSON", "Failed to download file");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return stringBuilder.toString();
}
********************************************************************************
## Json To Array
********************************************************************************
try {
JSONArray jsonArray = new JSONArray(result);
ArrayList<String> list = new ArrayList<String>();
if (jsonArray != null) {
int len = jsonArray.length();
Log.i(" len : ", String.valueOf(len));
for (int i=0;i<len;i++){
list.add(jsonArray.get(i).toString());
}
}
int index = 0;// Index of object in the ArrayList
Log.i("Data",list.get(index).toString());//Preferred Method to get object
Log.i("Data",list.toArray()[index].toString());
JSONObject parentObject;
try {
parentObject = new JSONObject(result);
ArrayList<String> list = new ArrayList<String>();
JSONArray jsonArray;
jsonArray = new JSONArray(parentObject.get("sale").toString());
//Log.i(" UserSale : ",jsonArray.toString());
if (jsonArray != null) {
int len = jsonArray.length();
Log.i(" len : ", String.valueOf(len));
for (int i=0;i<len;i++){
list.add(jsonArray.get(i).toString());
}
}
********************************************************************************
## Print Long String in output log
********************************************************************************
int length = result.length();
for(int i=0; i<length; i+=1024)
{
if(i+1024<length)
Log.d("JSON OUTPUT", result.substring(i, i+1024));
else
Log.d("JSON OUTPUT", result.substring(i, length));
}
********************************************************************************
## List
********************************************************************************
for (int i=0;i<len;i++){
list.add(jsonArray.get(i).toString());
}
int index = 0;// Index of object in the ArrayList
Log.i("Data",list.get(index).toString());//Preferred Method to get object
Log.i("Data",list.toArray()[index].toString());
********************************************************************************
## Alert Dialog
********************************************************************************
private void openAlert(View view) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
alertDialogBuilder.setTitle(this.getTitle()+ " decision");
alertDialogBuilder.setMessage("Are you sure?");
// set positive button: Yes message
alertDialogBuilder.setPositiveButton("Yes",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// go to a new activity of the app
Intent positveActivity = new Intent(getApplicationContext(),
PositiveActivity.class);
startActivity(positveActivity);
}
});
// set negative button: No message
alertDialogBuilder.setNegativeButton("No",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// cancel the alert box and put a Toast to the user
dialog.cancel();
Toast.makeText(getApplicationContext(), "You chose a negative answer",
Toast.LENGTH_LONG).show();
}
});
// set neutral button: Exit the app message
alertDialogBuilder.setNeutralButton("Exit the app",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// exit the app and go to the HOME
MainActivity.this.finish();
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
// show alert
alertDialog.show();
}
********************************************************************************
## Notify
********************************************************************************
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.notification_icon;
CharSequence tickerText = "Ł‡Ų´ŲÆŲ§Ų±"; // ticker-text
long when = System.currentTimeMillis();
Context context = getApplicationContext();
CharSequence contentTitle = "Ł‡Ų´ŲÆŲ§Ų±";
CharSequence contentText = "Ų§Ś©Ų§Ł†ŲŖ Ų´Ł…Ų§ ŲØŁ‡ Ų²ŁŲÆŪ Ł…Ł†Ł‚Ų¶Ū Ł…ŪŲ´ŁŲÆŲ Ł„Ų·ŁŲ§ Ł†Ų³ŲØŲŖ ŲØŁ‡ Ų´Ų§Ų±Ś Ų§Ś©Ų§Ł†ŲŖ Ų®ŁŲÆ Ų§Ł‚ŲÆŲ§Ł… ŁŲ±Ł…Ų§ŪŪŲÆ.";
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
@SuppressWarnings("deprecation")
Notification notification = new Notification(icon, tickerText, when);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
// and this
final int HELLO_ID = 1;
mNotificationManager.notify(HELLO_ID, notification);
********************************************************************************
## SharedPreferences
********************************************************************************
SharedPreferences preferences = getApplicationContext().getSharedPreferences("net.pishgaman", Context.MODE_PRIVATE);
String fullname = preferences.getString("fullname", "n/a");
String mobile = preferences.getString("mobile", "n/a");
String email = preferences.getString("email", "n/a");
String current_service = preferences.getString("current_service", "n/a");
String credit = preferences.getString("credit", "n/a");
String deposit = preferences.getString("deposit", "n/a");
String status = preferences.getString("status", "n/a");
String jexpire = preferences.getString("jexpire", "n/a");
String gexpire = preferences.getString("gexpire", "n/a");
TextView fullname_TextView = (TextView)findViewById(R.id.fullname);
fullname_TextView.setText(fullname);
TextView mobile_TextView = (TextView)findViewById(R.id.mobile);
mobile_TextView.setText(mobile);
TextView email_TextView = (TextView)findViewById(R.id.email);
email_TextView.setText(email);
TextView current_service_TextView = (TextView)findViewById(R.id.current_service);
current_service_TextView.setText(current_service);
TextView credit_TextView = (TextView)findViewById(R.id.credit);
credit_TextView.setText(credit);
TextView deposit_TextView = (TextView)findViewById(R.id.deposit);
deposit_TextView.setText(deposit);
TextView status_TextView = (TextView)findViewById(R.id.status);
status_TextView.setText(status);
TextView jexpire_TextView = (TextView)findViewById(R.id.jexpire);
jexpire_TextView.setText(jexpire);
//Log.i(" fullname : ", fullname);
//Log.i(" current_service : ", current_service);
try {
JSONObject parentObject = new JSONObject(result);
// TODO Complete this Action!
int userError = parentObject.getInt("error");
if(userError == 0) {
Log.i(" Now in :", " on ReadJson ");
JSONObject user = parentObject.getJSONObject("info");
JSONObject userDetails = user.getJSONObject("user");
String fullname = userDetails.getString("fullname");
String mobile = userDetails.getString("mobile");
String email = userDetails.getString("email");
JSONObject serviceDetails = user.getJSONObject("service");
String current_service = serviceDetails.getString("current_service");
String credit = serviceDetails.getString("credit");
String deposit = serviceDetails.getString("deposit");
String status = serviceDetails.getString("status");
String jexpire = serviceDetails.getString("jexpire");
String gexpire = serviceDetails.getString("gexpire");
SharedPreferences preferences = getSharedPreferences("net.pishgaman", Context.MODE_PRIVATE);
Editor edit = preferences.edit();
edit.putString("fullname", fullname);
edit.putString("mobile", mobile);
edit.putString("email", email);
edit.putString("current_service", current_service);
edit.putString("credit", credit);
edit.putString("deposit", deposit);
edit.putString("status", status);
edit.putString("jexpire", jexpire);
edit.putString("gexpire", gexpire);
edit.commit();
TextView fullname_TextView = (TextView)findViewById(R.id.fullname);
fullname_TextView.setText(fullname);
TextView mobile_TextView = (TextView)findViewById(R.id.mobile);
mobile_TextView.setText(mobile);
TextView email_TextView = (TextView)findViewById(R.id.email);
email_TextView.setText(email);
TextView current_service_TextView = (TextView)findViewById(R.id.current_service);
current_service_TextView.setText(current_service);
TextView credit_TextView = (TextView)findViewById(R.id.credit);
credit_TextView.setText(credit);
TextView deposit_TextView = (TextView)findViewById(R.id.deposit);
deposit_TextView.setText(deposit);
TextView status_TextView = (TextView)findViewById(R.id.status);
status_TextView.setText(status);
TextView jexpire_TextView = (TextView)findViewById(R.id.jexpire);
jexpire_TextView.setText(jexpire);
} else {
Toast.makeText(getApplicationContext(), "Ś©Ų§Ų±ŲØŲ±Ū ŲØŲ§ Ų§Ų·Ł„Ų§Ų¹Ų§ŲŖ ŁŲ§Ų±ŲÆ Ų´ŲÆŁ‡ ŲÆŲ± Ų³ŪŲ³ŲŖŁ… Ł…ŁŲ¬ŁŲÆ Ł†Ł…ŪŲØŲ§Ų´ŲÆ!", Toast.LENGTH_LONG).show();
Log.i(" In Json :","userError is eccure!");
}
/*
Intent broadcastIntent = new Intent();
broadcastIntent.setAction("JSON_RECEIVED_ACTION");
main_context.sendBroadcast(broadcastIntent);
*/
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
_BY: Farid Ahmadian_
_TAG: java, android, json_
_DATE: 2014-08-27 19:36:53_