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hiiii following is my login code
public class Login extends ActionBarActivity {
// flag for Internet connection status
Boolean isInternetPresent = false;
String shareduid;
// Connection detector class
ConnectionDetector cd;
ImageView imgview;
EditText uname;
EditText pass;
Button create,login;
TextView trouble;
public static final String MyPREFERENCES = "MyPrefs";
public static String userid = null;
SharedPreferences sharedpreferences;
private static final String TAG = "myAppSurun";
//private ActionBarDrawerToggle mDrawerToggle;
private String mActivityTitle;
//End Drawer
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> productsList;
String otpkey,vrfy;
// url to get all products list
private static String url_all_login = "http://xxx/xxx/xxxx/xxx";
//Globalstring
String username =null;
String password = null;
//Global Variable for login state checking
public boolean loginflag = false;
// RelativeLayout relativeLayout=new RelativeLayout(this);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
cd = new ConnectionDetector(getApplicationContext());
imgview=(ImageView)findViewById(R.id.imageView2);
uname=(EditText)findViewById(R.id.edituser);
pass=(EditText)findViewById(R.id.editpassword);
create=(Button)findViewById(R.id.create);
login=(Button)findViewById(R.id.Login);
trouble=(TextView)findViewById(R.id.trouble_login);
getSupportActionBar().setTitle("Surun Support");
ColorDrawable(Color.parseColor("#F58634")));
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
ActionBar bar = getSupportActionBar();
bar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#F58634")));
//Click Text Animation
final Animation myanim, imganim;
myanim = AnimationUtils.loadAnimation(this, R.anim.link_text_anim);
imganim = AnimationUtils.loadAnimation(this, R.anim.rotate);
uname.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
validation.isValid(uname, "^[_a-zA-Z]+(\\.[_a-zA-Z 0-9-]+)*#[a-zA-Z]+(\\.[a-zA-Z]+)*(\\.[a-zA-Z]{2,})$", "Invalid UserName", true);
}
});
pass.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
validation.isValid(pass, "[0-9]{10}", "Invalid Mobile No", true);
}
});
//end of initializing component
create.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Toast.makeText(getApplicationContext(), "Create Click", Toast.LENGTH_LONG).show();
Intent i = new Intent(getApplicationContext(), Registration_user.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(i);
}
});//End of On click for button
//starting font settings this has prone to error try catch is mandatory while setting font(Overriding native font interface).
try {
Typeface myTypeface = Typeface.createFromAsset(this.getAssets(), "fonts/robotoregular.ttf");
create.setTypeface(myTypeface);
} catch (Exception e) {
Log.v(TAG, "Exception " + e);
}
//End of font settings
//Initializing shared preferences
sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
//load preferences if exist
Log.v(TAG,""+sharedpreferences);
Log.v(TAG,"Preference is present loading it");
String shareduser = sharedpreferences.getString("User", "");
String sharedpass = sharedpreferences.getString("Password", "");
shareduid = sharedpreferences.getString("userid", "");
String sharedotp = sharedpreferences.getString("otp", "");
String sharedvrfy = sharedpreferences.getString("verified", "");
Log.v(TAG,"uid"+shareduser);
Log.v(TAG,"otp"+sharedpass);
Log.v(TAG,"vrfy"+sharedvrfy);
if ((shareduser.length() > 0) && (sharedpass.length() > 0)) {
//Navigating to main page
Log.v(TAG,"navigate to main");
Intent i = new Intent(getApplicationContext(), UserLogedIn.class);
i.putExtra("user", shareduser);
i.putExtra("pass", sharedpass);
i.putExtra("userid", shareduid);
i.putExtra("otpkey",sharedotp);
i.putExtra("vrfy", sharedvrfy);
//Starting An Activity
startActivity(i);
finish();
} else {
login.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// get Internet status
isInternetPresent = cd.isConnectingToInternet();
// check for Internet status
if (isInternetPresent) {
if (uname.getText().length() <= 0 || pass.getText().length() <= 0) {
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("All Fields Are Mandatory");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Please Enter Correct User Name And Password", Toast.LENGTH_SHORT).show();
}
});
// Showing Alert Message
alertDialog.show();
if (pass.getText().length() > 10) {
Toast toast1 = Toast.makeText(getApplicationContext(), "Four Characters Only...", Toast.LENGTH_SHORT);
toast1.show();
trouble.setVisibility(View.VISIBLE);
//Log.v(TAG,"Not Valid");
}
} else if (pass.getText().length() > 10) {
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Mobile no Must be 10 digit only ");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Please Enter Correct User Name And Password", Toast.LENGTH_SHORT).show();
}
});
// Showing Alert Message
alertDialog.show();
} else if (!(validation.isValid(uname, "^[_a-zA-Z]+(\\.[_a-zA-Z0-9-]+)*#[a-zA-Z]+(\\.[a-zA-Z]+)*(\\.[a-zA-Z]{2,})$", "Invalid UserName", true))) {
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Email Is Incorrect");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Email Id Is InCorrect", Toast.LENGTH_SHORT).show();
uname.requestFocus();
}
});
// Showing Alert Message
alertDialog.show();
} else {
//Animate Button load animation from anim/rotate.xml
imgview.startAnimation(imganim);
username = uname.getText().toString().toLowerCase();
password = pass.getText().toString();
//Sending Login Request To Server for validation Using Asynchronus Tasks where username and password as a parameter to method
Log.v(TAG, "Excuting check detail");
new CheckDetail().execute();
//Creating Shared Preferences
}//end of else_if fields are valid
}
else
{
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Internet is not active.Please Check Your NEtwork Setting");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Internet Is Inactive", Toast.LENGTH_SHORT).show();
}
});
// Showing Alert Message
alertDialog.show();
}
}
});//End of On click for button
}//If no shared preferences found
}//End of onCreate function
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_admin_home, menu);
return true;
}//End of onCreateOptionMenu
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
//Remove Following Comment To Enable Drawer Toggling On Login Page
/*// Activate the navigation drawer toggle
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}*/
return super.onOptionsItemSelected(item);
}//End of onOptionItemSelected
//Alert Dialog when User Click Back Button
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
//Handle the back button
if(keyCode == KeyEvent.KEYCODE_BACK) {
//Ask the user if they want to quit
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle(R.string.quit)
.setMessage(R.string.really_quit)
.setPositiveButton("yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//Stop the activity
Login.this.finish();
}
})
.setNegativeButton("no", null)
.show();
return true;
}
else {
return super.onKeyDown(keyCode, event);
}
}//End of Alert Dialog Box
class CheckDetail extends AsyncTask<String,String, String> {
JSONArray datail=null;
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Login.this);
pDialog.setMessage("Logging in. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
*/
protected String doInBackground(String... args) {
try {
Log.v(TAG, "In Do in Background");
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", username));
params.add(new BasicNameValuePair("pwd", password));
// getting JSON string from URL
JSONObject json =jParser.makeHttpRequest(url_all_login, "POST", params);
//Object Parsing Failed here hence by using trail guide using JSONParser.alternateJSONArray to parse user data.
//Hence not using json instance of object using a BACKUP static variable of Parser class for proccessing.
//To use this backup utility theme the process should be standard and return unique or two out put only or ether way use three logical step
if(json != null) {
// As if login fails it returns object handling fail logic here.
//We can make it general by sending array from server side so we can only use alternateJSONArray variable
}
if(JSONParser.alternateJSONArray != null)
{
Log.v(TAG, "USING BACKUP ARRAY");
//Check your log cat for JSON futher details
for (int jsonArrayElementIndex=0; jsonArrayElementIndex < JSONParser.alternateJSONArray.length(); jsonArrayElementIndex++) {
JSONObject jsonObjectAtJsonArrayElementIndex = JSONParser.alternateJSONArray.getJSONObject(jsonArrayElementIndex);
userid=jsonObjectAtJsonArrayElementIndex.getString("u_id");
otpkey=jsonObjectAtJsonArrayElementIndex.getString("OTP");
vrfy=jsonObjectAtJsonArrayElementIndex.getString("is_verified");
Log.v(TAG,"" +userid);
Log.v(TAG,"" +otpkey);
Log.v(TAG,"" +vrfy);
if(jsonObjectAtJsonArrayElementIndex.getString("email").equals(username) && jsonObjectAtJsonArrayElementIndex.getString("mobile").equals(password))
{
Log.v(TAG,"Login Successful Now setting loginflag true");
loginflag = true;
}
}
}
else
{
loginflag=false;
}
} catch (Exception e) {
e.printStackTrace();
Log.v(TAG, "Exception at end :" + e.toString());
//Log.e("TAG", "Error......!RecoverIt");
}
return null ;
}
protected void onPostExecute(String result)
{
// dismiss the dialog after getting all products
//super.onPostExecute();
// pDialog.dismiss();
Log.v(TAG,"verification"+vrfy);
Log.v(TAG,"userid"+userid);
/* if(vrfy==false)
{
Intent i = new Intent(getApplicationContext(), Verifyotp.class);
i.putExtra("userid", userid);
i.putExtra("isverified", vrfy);
startActivity(i);
}else*/
if(loginflag==true) {
Log.v(TAG, "Executing Shared Preferences...");
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString("User", uname.getText().toString());
editor.putString("Password", pass.getText().toString());
Log.v(TAG, "Userid==================" + userid);
Log.v(TAG, "otpkey==============" + otpkey);
Log.v(TAG, "is verified " + vrfy);
editor.putString("userid", userid);
editor.putString("otp", otpkey);
editor.putString("vrfy", vrfy);
editor.commit();
Toast.makeText(getApplicationContext(), "Login Succeed", Toast.LENGTH_SHORT).show();
android.util.Log.v(TAG, "Login Succeed");
Intent i = new Intent(getApplicationContext(), UserLogedIn.class);
i.putExtra("user", shareduid);
Log.v(TAG, "" + userid);
startActivity(i);
finish();
}
else
{
Toast.makeText(getApplicationContext(),"Login failed,Invalid Details...!",Toast.LENGTH_LONG).show();
trouble.setVisibility(View.VISIBLE);
}
pDialog.dismiss();
}
}
i send userid from login.java to next activity but in other activity it doesnt receive that userid first time.at first time it display null but at other places it show/print userid correctely
if i restart app userid will be perfect and app will work fine
i dont know why it is happen at first time
code in other activity
Intent iin = getIntent();
Bundle b = iin.getExtras();
if (b != null) {
u_id = (String) b.get("userid");//first time it shows null but after restart it get correct value
Log.v(TAG, "userlogged in" + u_id);
}
because you sending null first time change below in your onpost method
Intent i = new Intent(getApplicationContext(), UserLogedIn.class);
i.putExtra("user", shareduid);
Log.v(TAG, "" + userid);
startActivity(i);
in above shareduid is null first time you setting by shared preference so just put below
Intent i = new Intent(getApplicationContext(), UserLogedIn.class);
i.putExtra("user", userid);
Log.v(TAG, "" + userid);
startActivity(i);
check with this and let me know also i think check with key if you putextra with 'user' key you have to access with the same 'user' key
I have one problem I am writing code for login and logout using SharedPreferneces.
When i click logout it run perfectly and go back to login screen.
Now the problem is that when i logout and come on login screen at that time if i entered invalid detail then server give failed message and but login will success and go to next screen.
here is code
public class Login extends ActionBarActivity {
// flag for Internet connection status
Boolean isInternetPresent = false;
// Connection detector class
ConnectionDetector cd;
ImageView imgview;
EditText uname;
EditText pass;
Button create,login;
TextView trouble;
public static final String MyPREFERENCES = "MyPrefs";
SharedPreferences sharedpreferences;
private static final String TAG = "myAppSurun";
//Drawer
//private ListView mDrawerList;
//private DrawerLayout mDrawerLayout;
//private ActionBarDrawerToggle mDrawerToggle;
private String mActivityTitle;
//End Drawer
//Asynchronous task variable
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> productsList;
String userid,otpkey,vrfy;
// url to get all products list
private static String url_all_login = "http://xxx/xxx/xxx/xxx";
//Globalstring
String username =null;
String password = null;
//Global Variable for login state checking
public static boolean loginflag = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
cd = new ConnectionDetector(getApplicationContext());
imgview=(ImageView)findViewById(R.id.imageView2);
uname=(EditText)findViewById(R.id.edituser);
pass=(EditText)findViewById(R.id.editpassword);
create=(Button)findViewById(R.id.create);
login=(Button)findViewById(R.id.Login);
trouble=(TextView)findViewById(R.id.trouble_login);
getSupportActionBar().setTitle("Surun Support");
//getSupportActionBar().setDisplayShowHomeEnabled(true);
//getSupportActionBar().setLogo(R.drawable.dotlogo1);
//getSupportActionBar().setDisplayUseLogoEnabled(true);
//ActionBar bar = getSupportActionBar();
//bar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#F58634")));
// Start Drawer Settings
//mDrawerList = (ListView) findViewById(R.id.navListlog);
//mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout_login);
//mActivityTitle = getTitle().toString();
//addDrawerItems();
//setupDrawer();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
ActionBar bar = getSupportActionBar();
bar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#F58634")));
// End of Drawer Settings
//Click Text Animation
final Animation myanim, imganim;
myanim = AnimationUtils.loadAnimation(this, R.anim.link_text_anim);
imganim = AnimationUtils.loadAnimation(this, R.anim.rotate);
//End of animation
//Initialize the component
uname.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
validation.isValid(uname, "^[_a-z]+(\\.[_a-z0-9-]+)*#[a-z]+(\\.[a-z]+)*(\\.[a-z]{2,})$", "Invalid UserName", true);
}
});
pass.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
validation.isValid(pass, "[0-9]{10}", "Invalid Mobile No", true);
}
});
//end of initializing component
// Creating underlined text
// String udata = "Create Account";
//SpannableString content = new SpannableString(udata);
//content.setSpan(new UnderlineSpan(), 0, udata.length(), 0);
//create.setText(content);
//end of creating underlined text
//Toast.makeText(getApplicationContext(), "Create", Toast.LENGTH_LONG).show();
//Log.v("TEST", "TEST");
create.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Toast.makeText(getApplicationContext(), "Create Click", Toast.LENGTH_LONG).show();
Intent i = new Intent(getApplicationContext(), Registration_user.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(i);
}
});//End of On click for button
//starting font settings this has prone to error try catch is mandatory while setting font(Overriding native font interface).
try {
Typeface myTypeface = Typeface.createFromAsset(this.getAssets(), "fonts/robotoregular.ttf");
create.setTypeface(myTypeface);
} catch (Exception e) {
Log.v(TAG, "Exception " + e);
}
//End of font settings
//Initializing shared preferences
sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
//load preferences if exist
Log.v(TAG,""+sharedpreferences);
Log.v(TAG,"Preference is present loading it");
String shareduser = sharedpreferences.getString("User", "");
String sharedpass = sharedpreferences.getString("Password", "");
String shareduid = sharedpreferences.getString("userid", "");
String sharedotp = sharedpreferences.getString("otp", "");
String sharedvrfy = sharedpreferences.getString("verified", "");
Log.v(TAG,"uid"+shareduser);
Log.v(TAG,"otp"+sharedpass);
if ((shareduser.length() > 0) && (sharedpass.length() > 0)) {
//Navigating to main page
Log.v(TAG,"navigate to main");
Intent i = new Intent(getApplicationContext(), UserLogedIn.class);
i.putExtra("user", shareduser);
i.putExtra("pass", sharedpass);
i.putExtra("userid", shareduid);
i.putExtra("otpkey",sharedotp);
i.putExtra("vrfy", sharedvrfy);
//Starting An Activity
startActivity(i);
finish();
} else {
login.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// get Internet status
isInternetPresent = cd.isConnectingToInternet();
// check for Internet status
if (isInternetPresent) {
if (uname.getText().length() <= 0 || pass.getText().length() <= 0) {
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("All Fields Are Mandatory");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Please Enter Correct User Name And Password", Toast.LENGTH_SHORT).show();
}
});
// Showing Alert Message
alertDialog.show();
if (pass.getText().length() > 10) {
Toast toast1 = Toast.makeText(getApplicationContext(), "Four Characters Only...", Toast.LENGTH_SHORT);
toast1.show();
trouble.setVisibility(View.VISIBLE);
//Log.v(TAG,"Not Valid");
}
} else if (pass.getText().length() > 10) {
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Mobile no Must be 10 digit only ");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Please Enter Correct User Name And Password", Toast.LENGTH_SHORT).show();
}
});
// Showing Alert Message
alertDialog.show();
} else if (!(validation.isValid(uname, "^[_a-z]+(\\.[_a-z0-9-]+)*#[a-z]+(\\.[a-z]+)*(\\.[a-z]{2,})$", "Invalid UserName", true))) {
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Email Is Incorrect");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Email Id Is InCorrect", Toast.LENGTH_SHORT).show();
uname.requestFocus();
}
});
// Showing Alert Message
alertDialog.show();
} else {
//Animate Button load animation from anim/rotate.xml
imgview.startAnimation(imganim);
username = uname.getText().toString();
password = pass.getText().toString();
//Sending Login Request To Server for validation Using Asynchronus Tasks where username and password as a parameter to method
Log.v(TAG, "Excuting check detail");
new CheckDetail().execute();
//Creating Shared Preferences
}//end of else_if fields are valid
}
else
{
AlertDialog alertDialog = new AlertDialog.Builder(Login.this).create();
// Setting Dialog Title
alertDialog.setTitle("Alert Dialog");
// Setting Dialog Message
alertDialog.setMessage("Internet is not active.Please Check Your NEtwork Setting");
// Setting Icon to Dialog
// alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
Toast.makeText(getApplicationContext(), "Internet Is Inactive", Toast.LENGTH_SHORT).show();
}
});
// Showing Alert Message
alertDialog.show();
}
}
});//End of On click for button
}//If no shared preferences found
}//End of onCreate function
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_admin_home, menu);
return true;
}//End of onCreateOptionMenu
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
//Remove Following Comment To Enable Drawer Toggling On Login Page
/*// Activate the navigation drawer toggle
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}*/
return super.onOptionsItemSelected(item);
}//End of onOptionItemSelected
//Alert Dialog when User Click Back Button
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
//Handle the back button
if(keyCode == KeyEvent.KEYCODE_BACK) {
//Ask the user if they want to quit
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle(R.string.quit)
.setMessage(R.string.really_quit)
.setPositiveButton("yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//Stop the activity
Login.this.finish();
}
})
.setNegativeButton("no", null)
.show();
return true;
}
else {
return super.onKeyDown(keyCode, event);
}
}//End of Alert Dialog Box
/**
* Background Async Task to Login by making HTTP Request
*/
class CheckDetail extends AsyncTask<String,String, String> {
/**
* Before starting background thread Show Progress Dialog
*/
JSONArray datail=null;
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Login.this);
pDialog.setMessage("Logging in. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
*/
protected String doInBackground(String... args) {
try {
Log.v(TAG, "In Do in Background");
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", username));
params.add(new BasicNameValuePair("pwd", password));
// getting JSON string from URL
JSONObject json =jParser.makeHttpRequest(url_all_login, "POST", params);
//Object Parsing Failed here hence by using trail guide using JSONParser.alternateJSONArray to parse user data.
//Hence not using json instance of object using a BACKUP static variable of Parser class for proccessing.
//To use this backup utility theme the process should be standard and return unique or two out put only or ether way use three logical step
if(json != null) {
// As if login fails it returns object handling fail logic here.
//We can make it general by sending array from server side so we can only use alternateJSONArray variable
}
if(JSONParser.alternateJSONArray != null)
{
Log.v(TAG, "USING BACKUP ARRAY");
//Check your log cat for JSON futher details
for (int jsonArrayElementIndex=0; jsonArrayElementIndex < JSONParser.alternateJSONArray.length(); jsonArrayElementIndex++) {
JSONObject jsonObjectAtJsonArrayElementIndex = JSONParser.alternateJSONArray.getJSONObject(jsonArrayElementIndex);
userid=jsonObjectAtJsonArrayElementIndex.getString("u_id");
otpkey=jsonObjectAtJsonArrayElementIndex.getString("OTP");
vrfy=jsonObjectAtJsonArrayElementIndex.getString("is_verified");
Log.v(TAG,"" +userid);
Log.v(TAG,"" +otpkey);
Log.v(TAG,"" +vrfy);
if(jsonObjectAtJsonArrayElementIndex.getString("email").equals(username) && jsonObjectAtJsonArrayElementIndex.getString("mobile").equals(password))
{
Log.v(TAG,"Login Successful Now setting loginflag true");
loginflag = true;
}
}
}
else
{
//JSON is null ether no data or 204 returned by server
}
} catch (Exception e) {
e.printStackTrace();
Log.v(TAG, "Exception at end :" + e.toString());
//Log.e("TAG", "Error......!RecoverIt");
}
return null ;
}
protected void onPostExecute(String result)
{
// dismiss the dialog after getting all products
//super.onPostExecute();
// pDialog.dismiss();
if(loginflag==true) {
Log.v(TAG, "Executing Shared Preferences...");
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString("User", uname.getText().toString());
editor.putString("Password", pass.getText().toString());
Log.v(TAG, "" + userid);
Log.v(TAG, "" + otpkey);
Log.v(TAG, "" + vrfy);
editor.commit();
Toast.makeText(getApplicationContext(), "Login Succeed", Toast.LENGTH_SHORT).show();
android.util.Log.v(TAG, "Login Succeed");
Intent i = new Intent(getApplicationContext(), UserLogedIn.class);
startActivity(i);
finish();
}
else
{
Toast.makeText(getApplicationContext(),"Login failed,Invalid Details...!",Toast.LENGTH_LONG).show();
trouble.setVisibility(View.VISIBLE);
}
pDialog.dismiss();
}
}
String getMD5(String pass) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] messageDigest = md.digest(pass.getBytes());
BigInteger number = new BigInteger(1, messageDigest);
String hashtext = number.toString(16);
// Now we need to zero pad it if you actually want the full 32 chars.
while (hashtext.length() < 32) {
hashtext = "0" + hashtext;
}
return hashtext;
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
}
/* private int returnParsedJsonObject(String result) {
JSONObject resultObject = null;
int returnedResult = 0;
try {
resultObject = new JSONObject(result);
returnedResult = resultObject.getInt("success");
} catch (JSONException e) {
e.printStackTrace();
}
return returnedResult;
}*/
}
When i logout and at login activity if i enter wrong detail it will give following logcat
I think backuparray is not nnull when i logout
loginflag is static. once it is set to true it is never set back to false until you restart the app.
Okey .
First make your AsyncTask extends AsyncTask<Void, Void, Boolean> then return true in Boolean doInBackground(Void... params) if your server gives Success response and set it as false if server gives you failed message.
Now in your onPostExecute(Boolean result) , if result is true then set your login flag here as True else false.
I am new in android development. i want my application to directly launch MainActivity if the User has already registered. how can i do this.
this is my MainActivity
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
Button btnTip, btnApp, btndos, btnAbout, btnServices;
ConnectionDetector cd;
AsyncTask<Void, Void, Void> mRegisterTask;
public static String name;
public static String email;
public static String contact;
public static String imei;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.app_bar);
toolbar.setTitle("Dental Application");
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
btnTip = (Button) findViewById(R.id.tips);
btndos = (Button) findViewById(R.id.dos);
btnApp = (Button) findViewById(R.id.appointments);
btnAbout = (Button) findViewById(R.id.about);
btnServices = (Button) findViewById(R.id.services);
// Alert dialog manager
AlertDialogManager alert = new AlertDialogManager();
cd = new ConnectionDetector(getApplicationContext());
// Check if Internet present
if (!cd.isConnectingToInternet()) {
// Internet Connection is not present
alert.showAlertDialog(MainActivity.this,
"Internet Connection Error",
"Please check your Internet connection", false);
// stop executing code by return
return;
}
Intent i = getIntent();
name = i.getStringExtra("name");
email = i.getStringExtra("email");
contact = i.getStringExtra("contact");
imei = i.getStringExtra("imei");
// Make sure the device has the proper dependencies.
GCMRegistrar.checkDevice(this);
// Make sure the manifest was properly set - comment out this line
// while developing the app, then uncomment it when it's ready.
GCMRegistrar.checkManifest(this);
//lblMessage = (TextView) findViewById(R.id.lblMessage);
registerReceiver(mHandleMessageReceiver, new IntentFilter(
DISPLAY_MESSAGE_ACTION));
// Get GCM registration id
final String regId = GCMRegistrar.getRegistrationId(this);
// Check if regid already presents
if (regId.equals("")) {
// Registration is not present, register now with GCM
GCMRegistrar.register(this, SENDER_ID);
} else {
// Device is already registered on GCM
if (GCMRegistrar.isRegisteredOnServer(this)) {
// Skips registration.
Toast.makeText(getApplicationContext(), "Already registered with GCM", Toast.LENGTH_LONG).show();
} else {
// Try to register again, but not in the UI thread.
// It's also necessary to cancel the thread onDestroy(),
// hence the use of AsyncTask instead of a raw thread.
final Context context = this;
mRegisterTask = new AsyncTask<Void, Void, Void>() {
#Override
protected Void doInBackground(Void... params) {
// Register on our server
// On server creates a new user
ServerUtilities.register(context, name, email, regId, contact, imei);
return null;
}
#Override
protected void onPostExecute(Void result) {
mRegisterTask = null;
}
};
mRegisterTask.execute(null, null, null);
}
}
btnTip.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, TipsActivity.class);
startActivity(intent);
}
});
btndos.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, DosActivity.class);
startActivity(intent);
}
});
btnApp.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, BookAppointmennts.class);
startActivity(intent);
}
});
btnAbout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, AboutUsActivity.class);
startActivity(intent);
}
});
btnServices.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, ServicesActivity.class);
startActivity(intent);
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/**
* Receiving push messages
* */
private final BroadcastReceiver mHandleMessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String newMessage = intent.getExtras().getString(EXTRA_MESSAGE);
// Waking up mobile if it is sleeping
WakeLocker.acquire(getApplicationContext());
/**
* Take appropriate action on this message
* depending upon your app requirement
* For now i am just displaying it on the screen
* */
// Showing received message
//lblMessage.append(newMessage + "\n");
Toast.makeText(getApplicationContext(), "New Message: " + newMessage, Toast.LENGTH_LONG).show();
// Releasing wake lock
WakeLocker.release();
}
};
#Override
protected void onDestroy() {
if (mRegisterTask != null) {
mRegisterTask.cancel(true);
}
try {
unregisterReceiver(mHandleMessageReceiver);
GCMRegistrar.onDestroy(this);
} catch (Exception e) {
Log.e("UnRegister Receiver", "> " + e.getMessage());
}
super.onDestroy();
}
}
and the RegisterActivity
public class RegisterActivity extends Activity {
// alert dialog manager
AlertDialogManager alert = new AlertDialogManager();
// Internet detector
ConnectionDetector cd;
// UI elements
EditText txtName;
EditText txtEmail;
EditText txtContact;
// Register button
Button btnRegister;
String imei;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
cd = new ConnectionDetector(getApplicationContext());
// Check if Internet present
if (!cd.isConnectingToInternet()) {
// Internet Connection is not present
alert.showAlertDialog(RegisterActivity.this,
"Internet Connection Error",
"Please connect to working Internet connection", false);
// stop executing code by return
return;
}
// Check if GCM configuration is set
if (SERVER_URL == null || SENDER_ID == null || SERVER_URL.length() == 0
|| SENDER_ID.length() == 0) {
// GCM sernder id / server url is missing
alert.showAlertDialog(RegisterActivity.this, "Configuration Error!",
"Please set your Server URL and GCM Sender ID", false);
// stop executing code by return
return;
}
txtName = (EditText) findViewById(R.id.txtName);
txtEmail = (EditText) findViewById(R.id.txtEmail);
txtContact = (EditText) findViewById(R.id.contact);
btnRegister = (Button) findViewById(R.id.btnRegister);
TelephonyManager mngr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
imei = mngr.getDeviceId();
/*
* Click event on Register button
* */
btnRegister.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// Read EditText dat
String name = txtName.getText().toString();
String email = txtEmail.getText().toString();
String contact = txtContact.getText().toString();
// Check if user filled the form
if (name.trim().length() > 0 && email.trim().length() > 0 && contact.trim().length()>0) {
// Launch Main Activity
Intent i = new Intent(getApplicationContext(), MainActivity.class);
// Registering user on our server
// Sending registraiton details to MainActivity
i.putExtra("name", name);
i.putExtra("email", email);
i.putExtra("contact", contact);
i.putExtra("imei", imei);
startActivity(i);
finish();
} else {
// user doen't filled that data
// ask him to fill the form
alert.showAlertDialog(RegisterActivity.this, "Registration Error!", "Please enter your details", false);
}
}
});
}
}
i am using GCM. the user is first registered and MainActivity is Displayed. Next time when the user opens the application i want directly MainActivity to be displayed. how can i do this. Can anyone please help me.
You will have to make LauncherActivity like SplashScreen in which check from shared prefrences or sqlite data that user is already registered or not
then by checking this transfer to corresponding activity.
If the user is not registered then show Registration Screen and when user register then save info in Sqlite or sharedpreferences or any other way.
If the user is already registered the show HomeScreen
First of all just post only the code that needs modification, you've posted all of the code in that Java file of yours. We could be more helpful if your code isn't cluttered.
I am trying to make an app that can open a file from the phone's directory. I will be opening .ddd files but would like to be able to open any file type. I know intents can be used. I have tried this but at the moment it just opens goes into the file selection but doesn't open the file.
import java.io.File;
import java.io.Serializable;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import ar.com.daidalos.afiledialog.*;
public class AFileDialogTestingActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Assign behaviors to the buttons.
Button buttonActivity1 = (Button)this.findViewById(R.id.activity_simple_open);
buttonActivity1.setOnClickListener(btnActivitySimpleOpen);
Button buttonActivity2 = (Button)this.findViewById(R.id.activity_open_downloads);
buttonActivity2.setOnClickListener(btnActivityOpenDownloads);
Button buttonActivity3 = (Button)this.findViewById(R.id.activity_select_folders);
buttonActivity3.setOnClickListener(btnActivitySelectFolders);
Button buttonActivity4 = (Button)this.findViewById(R.id.activity_create_files);
buttonActivity4.setOnClickListener(btnActivityCreateFiles);
Button buttonActivity5 = (Button)this.findViewById(R.id.activity_select_images);
buttonActivity5.setOnClickListener(btnActivitySelectImages);
Button buttonActivity6 = (Button)this.findViewById(R.id.activity_ask_confirmation);
buttonActivity6.setOnClickListener(btnActivityAskConfirmation);
Button buttonActivity7 = (Button)this.findViewById(R.id.activity_custom_labels);
buttonActivity7.setOnClickListener(btnActivityCustomLabels);
Button buttonDialog1 = (Button)this.findViewById(R.id.dialog_simple_open);
buttonDialog1.setOnClickListener(btnDialogSimpleOpen);
Button buttonDialog2 = (Button)this.findViewById(R.id.dialog_open_downloads);
buttonDialog2.setOnClickListener(btnDialogOpenDownloads);
Button buttonDialog3 = (Button)this.findViewById(R.id.dialog_select_folders);
buttonDialog3.setOnClickListener(btnDialogSelectFolders);
Button buttonDialog4 = (Button)this.findViewById(R.id.dialog_create_files);
buttonDialog4.setOnClickListener(btnDialogCreateFiles);
Button buttonDialog5 = (Button)this.findViewById(R.id.dialog_select_images);
buttonDialog5.setOnClickListener(btnDialogSelectImages);
Button buttonDialog6 = (Button)this.findViewById(R.id.dialog_ask_confirmation);
buttonDialog6.setOnClickListener(btnDialogAskConfirmation);
Button buttonDialog7 = (Button)this.findViewById(R.id.dialog_custom_labels);
buttonDialog7.setOnClickListener(btnDialogCustomLabels);
}
// ----- Buttons for open a dialog ----- //
private OnClickListener btnDialogSimpleOpen = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Show the dialog.
dialog.show();
}
};
private OnClickListener btnDialogOpenDownloads = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Define start folder.
dialog.loadFolder(Environment.getExternalStorageDirectory() + "/Download/");
// Show the dialog.
dialog.show();
}
};
private OnClickListener btnDialogSelectFolders = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Activate the folder mode.
dialog.setFolderMode(true);
// Show the dialog.
dialog.show();
}
};
private OnClickListener btnDialogCreateFiles = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Activate the button for create files.
dialog.setCanCreateFiles(true);
// Show the dialog.
dialog.show();
}
};
private OnClickListener btnDialogSelectImages = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Define the filter for select images.
dialog.setFilter(".*jpg|.*png|.*gif|.*JPG|.*PNG|.*GIF");
dialog.setShowOnlySelectable(false);
// Show the dialog.
dialog.show();
}
};
private OnClickListener btnDialogAskConfirmation = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Activate the button for create files.
dialog.setCanCreateFiles(true);
// Activate the confirmation dialogs.
dialog.setShowConfirmation(true, true);
// Show the dialog.
dialog.show();
}
};
private OnClickListener btnDialogCustomLabels = new OnClickListener() {
public void onClick(View v) {
// Create the dialog.
FileChooserDialog dialog = new FileChooserDialog(AFileDialogTestingActivity.this);
// Assign listener for the select event.
dialog.addListener(AFileDialogTestingActivity.this.onFileSelectedListener);
// Activate the folder mode.
dialog.setFolderMode(true);
// Activate the button for create files.
dialog.setCanCreateFiles(true);
// Activate the confirmation dialogs.
dialog.setShowConfirmation(true, true);
// Define the labels.
FileChooserLabels labels = new FileChooserLabels();
labels.createFileDialogAcceptButton = "AcceptButton";
labels.createFileDialogCancelButton = "CancelButton";
labels.createFileDialogMessage = "DialogMessage";
labels.createFileDialogTitle = "DialogTitle";
labels.labelAddButton = "AddButton";
labels.labelSelectButton = "SelectButton";
labels.messageConfirmCreation = "messageConfirmCreation";
labels.messageConfirmSelection = "messageConfirmSelection";
labels.labelConfirmYesButton = "yesButton";
labels.labelConfirmNoButton = "noButton";
dialog.setLabels(labels);
// Show the dialog.
dialog.show();
}
};
// ---- Buttons for open an activity ----- //
private OnClickListener btnActivitySimpleOpen = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener btnActivityOpenDownloads = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Define start folder.
intent.putExtra(FileChooserActivity.INPUT_START_FOLDER, Environment.getExternalStorageDirectory() + "/Download/");
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener btnActivitySelectFolders = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Activate the folder mode.
intent.putExtra(FileChooserActivity.INPUT_FOLDER_MODE, true);
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener btnActivityCreateFiles = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Activate the button for create files.
intent.putExtra(FileChooserActivity.INPUT_CAN_CREATE_FILES, true);
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener btnActivitySelectImages = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Define the filter for select images.
intent.putExtra(FileChooserActivity.INPUT_REGEX_FILTER, ".*jpg|.*png|.*gif|.*JPG|.*PNG|.*GIF");
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener btnActivityAskConfirmation = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Activate the button for create files.
intent.putExtra(FileChooserActivity.INPUT_CAN_CREATE_FILES, true);
// Activate the confirmation dialogs.
intent.putExtra(FileChooserActivity.INPUT_SHOW_CONFIRMATION_ON_CREATE, true);
intent.putExtra(FileChooserActivity.INPUT_SHOW_CONFIRMATION_ON_SELECT, true);
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener btnActivityCustomLabels = new OnClickListener() {
public void onClick(View v) {
// Create the intent for call the activity.
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
// Activate the folder mode.
intent.putExtra(FileChooserActivity.INPUT_FOLDER_MODE, true);
// Activate the button for create files.
intent.putExtra(FileChooserActivity.INPUT_CAN_CREATE_FILES, true);
// Activate the confirmation dialogs.
intent.putExtra(FileChooserActivity.INPUT_SHOW_CONFIRMATION_ON_CREATE, true);
intent.putExtra(FileChooserActivity.INPUT_SHOW_CONFIRMATION_ON_SELECT, true);
// Define the labels.
FileChooserLabels labels = new FileChooserLabels();
labels.createFileDialogAcceptButton = "AcceptButton";
labels.createFileDialogCancelButton = "CancelButton";
labels.createFileDialogMessage = "DialogMessage";
labels.createFileDialogTitle = "DialogTitle";
labels.labelAddButton = "AddButton";
labels.labelSelectButton = "SelectButton";
labels.messageConfirmCreation = "messageConfirmCreation";
labels.messageConfirmSelection = "messageConfirmSelection";
labels.labelConfirmYesButton = "yesButton";
labels.labelConfirmNoButton = "noButton";
intent.putExtra(FileChooserActivity.INPUT_LABELS, (Serializable) labels);
// Call the activity
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
private OnClickListener clickButtonOpenActivity = new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(AFileDialogTestingActivity.this, FileChooserActivity.class);
intent.putExtra(FileChooserActivity.INPUT_REGEX_FILTER, ".*pdf|.*jpg|.*png|.*mp3|.*mp4|.*avi");
intent.putExtra(FileChooserActivity.INPUT_SHOW_ONLY_SELECTABLE, true);
intent.putExtra(FileChooserActivity.INPUT_CAN_CREATE_FILES, true);
intent.putExtra(FileChooserActivity.INPUT_FOLDER_MODE, true);
intent.putExtra(FileChooserActivity.INPUT_SHOW_CONFIRMATION_ON_CREATE, true);
intent.putExtra(FileChooserActivity.INPUT_SHOW_CONFIRMATION_ON_SELECT, true);
// Define labels.
FileChooserLabels labels = new FileChooserLabels();
labels.createFileDialogAcceptButton = "AcceptButton";
labels.createFileDialogCancelButton = "CancelButton";
labels.createFileDialogMessage = "DialogMessage";
labels.createFileDialogTitle = "DialogTitle";
labels.labelAddButton = "AddButton";
labels.labelSelectButton = "SelectButton";
labels.messageConfirmCreation = "messageConfirmCreation";
labels.messageConfirmSelection = "messageConfirmSelection";
labels.labelConfirmYesButton = "yesButton";
labels.labelConfirmNoButton = "noButton";
intent.putExtra(FileChooserActivity.INPUT_LABELS, (Serializable) labels);
AFileDialogTestingActivity.this.startActivityForResult(intent, 0);
}
};
// ---- Methods for display the results ----- //
private FileChooserDialog.OnFileSelectedListener onFileSelectedListener = new FileChooserDialog.OnFileSelectedListener() {
public void onFileSelected(Dialog source, File file) {
source.hide();
Toast toast = Toast.makeText(AFileDialogTestingActivity.this, "File selected: " + file.getName(), Toast.LENGTH_LONG);
toast.show();
}
public void onFileSelected(Dialog source, File folder, String name) {
source.hide();
Toast toast = Toast.makeText(AFileDialogTestingActivity.this, "File created: " + folder.getName() + "/" + name, Toast.LENGTH_LONG);
toast.show();
}
};
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
boolean fileCreated = false;
String filePath = "";
Bundle bundle = data.getExtras();
if(bundle != null)
{
if(bundle.containsKey(FileChooserActivity.OUTPUT_NEW_FILE_NAME)) {
fileCreated = true;
File folder = (File) bundle.get(FileChooserActivity.OUTPUT_FILE_OBJECT);
String name = bundle.getString(FileChooserActivity.OUTPUT_NEW_FILE_NAME);
filePath = folder.getAbsolutePath() + "/" + name;
} else {
fileCreated = false;
File file = (File) bundle.get(FileChooserActivity.OUTPUT_FILE_OBJECT);
filePath = file.getAbsolutePath();
}
}
String message = fileCreated? "File created" : "File opened";
message += ": " + filePath;
Toast toast = Toast.makeText(AFileDialogTestingActivity.this, message, Toast.LENGTH_LONG);
toast.show();
}
}
}
This is how I would do it. You also should be sure to include <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> in the AndroidManifest
xml file
Button
android:id="#+id/FileButtonOrWhatever"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:onClick="GetFiles"
java file
public void GetFiles(View view) {
// get the files directory
File lister = this.getFilesDir();
FileInputStream inputStream = null;
byte[] bytes = new byte[500];
int fileIdx = -1;
for (String list : lister.list()){
fileIdx++;
if(list.endsWith("ddd")){
File file = lister.listFiles()[fileIdx];
try {
inputStream = new FileInputStream(file);
bytes = new byte[inputStream.available()];
inputStream.read(bytes);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();}
finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
}
I have problem in my application.
I want to show user's profile, and I have two links in my app.
One link is via TextView, which run showUser(View v) method:
public void showUser(View v){
Intent i;
i=new Intent(getApplicationContext(), ShowProfile.class);
i.putExtra("id",user); // user is String with users ID
startActivity(i);
}
And the second link is in dialog, which user can open:
( I will post here whole method, but I'll highlight important part )
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder .setTitle(R.string.show_photo_show_rated_users_title)
.setNegativeButton("Close", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
dialog.dismiss();
}
});
ListView modeList = new ListView(this);
String[] stringArray = new String[ratedUsers.size()];
for ( int i=0 ; i<ratedUsers.size() ; i++ ){
stringArray[i] = ratedUsers.get(i).get("name");
}
ArrayAdapter<String> modeAdapter = new ArrayAdapter<String>(this, R.layout.dropdown_item_white, android.R.id.text1, stringArray);
modeList.setAdapter(modeAdapter);
modeList.setOnItemClickListener(new ListView.OnItemClickListener(){
/*********************** IMPORTANT PART *********************************/
#Override
public void onItemClick(AdapterView<?> parent, View arg1, int index,long arg3) {
Intent i;
i=new Intent(ShowPhotoDetails.this , ShowProfile.class);
i.putExtra("id",ratedUsers.get(index).get("id"));
/**** ratedUsers is ArrayList<HashMap<String,String>> ****/
startActivity(i);
}});
builder.setView(modeList);
final Dialog dialog = builder.create();
dialog.show();
}
And finally here's ShowProfile.class:
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.profile);
Intent i = getIntent();
try {
id = i.getStringExtra("id");
}catch(Exception e){
e.printStackTrace();
Toast.makeText(getBaseContext(), "Error loading intent", Toast.LENGTH_SHORT).show();
finish();
}
try{
Log.w("ID",id); //always give right number
new GetUserInformations().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, id);
/*
If I comments this asyncTask, there's no error at all, but if I run it, It
open debug View in Eclipse, says that "Source not found" and crashes...
No LogCat Output
*/
}catch(Exception e){
e.printStackTrace();
}
...
I wonder why in one case it run perfectly and in the other it crashes. As I wrote in code, there's no LogCat output for this crash. It don't even say Uncaught exception or something like this.
EDIT: I found out what gives me the error.
public class GetUserInformations extends AsyncTask<String,Void,Void>{
Map<String,Object> tmpUser;
#Override
protected void onPreExecute(){
tmpUser = new HashMap<String,Object>();
}
#Override
protected Void doInBackground(String... arg) {
try{
int u_id = Integer.parseInt(arg[0]);
tmpUser = myDb.getUser(u_id); // downloading info
}catch(Exception e){
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void arg){
if ( tmpUser != null ){
Log.w("LOG",""+tmpUser.get("name"));
name = (String) tmpUser.get("name");
fbId = (String) tmpUser.get("id");
email = (String) tmpUser.get("email");
country = (Integer) tmpUser.get("country");
userName.setText(name);
profilepic.setProfileId(fbId);
userSubscribe.setVisibility(View.VISIBLE);
}
else {
Toast.makeText(getBaseContext(), "Error", Toast.LENGTH_SHORT).show();
finish();
}
}
}
When I open activity for first time, everything downloads fine, but when I backPress and click on link to this Activity again, then it gives me NullPointerException.
Do you know why ?
In your onItemClick function, try to put :
i = new Intent(getApplicationContext(), ShowProfile.class);
instead of :
i = new Intent(ShowPhotoDetails.this, ShowProfile.class);
remove this:
new GetUserInformations().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, id);
and use :
if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.HONEYCOMB) {
new GetUserInformations().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, id);
}
else {
new GetUserInformations().execute(id);
}
What is the API level on which you are facing this problem. Try to run it on different levels, taking Honeycomb as a reference.
Need to check the same and apply execute or executeONExecutor like this:
if (currentApiVersion >=
android.os.Build.VERSION_CODES.HONEYCOMB) {
new YourAsynctask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
} else {
new YourAsynctask().execute();
}
Check this asynctask-threading-regression-confirmed blog post