I have 10 cardview in a fragment, when user click on one it'll open a specific html file within the application. When I try to open this class, the apps always crash .
My MainActivity is here
2nd Activity is here
What you can do to solve your issues is, in your MainActivity's onclick method change like :
Intent i;
switch (v.getId()) {
case R.id.indonesia_card:
i = new Intent(this, Indonesia.class);
i.putExtra("isFrom", "Indonesia");
startaCtivity(i);
case R.id.mathematika_card:
i = new Intent(this, Indonesia.class);
i.putExtra("isFrom", "Mathematika");
startaCtivity(i);
case R.id.ipa_card:
i = new Intent(this, Indonesia.class);
i.putExtra("isFrom", "IPA");
startaCtivity(i);
}
Now, In your other Activity receive the intent and set data appropriately.
String from = getIntent.getStringExtra("isFrom");
if (isFrom != null) {
if (isFrom.equals("Indonesia") {
webview.loadUrl("file:///android_asset/yourfile.html");
} else if (isFrom.equals("Mathematika") {
webview.loadUrl("file:///android_asset/yourfile.html");
}else if (isFrom.equals("IPA") {
webview.loadUrl("file:///android_asset/yourfile.html");
}
}
Hope this will help you.
Hi guys i'm really stuck on this and i'd appreciate help .I am inserting into a mysql database and when completed inside the button i am calling finish and it's going back to main activity but the list is not refreshing ?i tried to dothe OnResume and onRestart but the list is not showing at all ?
this is my insert button (main activity is called businessSide.java)
//Add offer when button is clicked and send business id and business email to business side
Button button = (Button) findViewById(R.id.btnOffer);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String serverURL = "http://10.0.2.2/Codes/AddOffer.php";
offerName = editNameText.getText().toString();
offerLocation = editLocationText.getText().toString();
offerDescription = editDescriptionText.getText().toString();
offerType=type;
Intent i = getIntent();
businessId = i.getStringExtra("number");
businessEmail = i.getStringExtra("email");
new SummaryAsyncTask().execute((Void) null);
Toast.makeText(getApplicationContext(), "You have successfully placed a new offer ", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Add_offer.this,BusinessSide.class);
intent.putExtra("number", id);
intent.putExtra("email", businessEmail);
startActivity(intent);
finish();
// onBackPressed();
}
});
}
I am developing an App using Eclipse. I have a page where it has different check boxes. I want the user if checking lest say options A and B and D then Activity 7 will open and if the user checks options A and C then Activity 5 will open.
Thank you
You can do so like this:
Get the IDs of the checkboxes. Then add an OnClickListener to the checkboxes like so:
OnClickListener checkBoxListener;
checkBoxListener = new OnClickListener()
{
#Override
public void onClick(View arg0) {
if (checkboxA.isChecked() && checkboxC.isChecked())
{
Intent i = new Intent(this,Activity5.class)
startActivity(i);
}
else if (checkboxA.isChecked() && checkboxB.isChecked() && checkboxD.isChecked())
{
Intent i = new Intent(this,Activity7.class)
startActivity(i);
}
}
};
checkboxA.setOnClickListener(checkBoxListener);
checkboxB.setOnClickListener(checkBoxListener);
checkboxC.setOnClickListener(checkBoxListener);
checkboxD.setOnClickListener(checkBoxListener);
Please give this a try.
Update: Thank you all for attempting to help me solve this bug. I am still unsure as to the cause, I was able to roll back to a previous commit and continue development from there. This previous commit did show the same bug, however after I commented out button.performClick() it went away. Strangely, this does not work on the most recent commit.
I still do not understand this bug and would appreciate any more assistance in helping determine the root cause. My greatest fear would be to inadvertently re-introduce it.
I have the most crazy error I have ever seen.
The OnCreate method is being called over and over again, freezing my application and giving me a slight flicker. The only solution is then to exit to the home screen and force quit the application from the settings menu.
Here is what is happening in detail:
Application starts (Main Activity)
Main Activity calls the Second Activity
Second Activity calls onCreate, sets up as normal
Second Activity randomly decides to exit onCreate <-- I think this what's happening
Second Activity's onCreate gets called again. It doesn't ever return to the Main Activity.
I have run a debugger, it appears that the second activity successfully completes the onComplete/onResume sequence, then decides to exit and restart.
Has anybody ever heard of this behavior before?
I haven't noticed any exceptions being thrown. Also, in the course of debugging, I did go ahead and check those locations that you see as silent fail. (this is the older code before I littered it with print statements)
UPDATE: When attempting to stop the process, I must turn on airplane mode. This means it has something to do with this code block (Second Activity)
else if (Network.haveNetworkConnection(Login.getContext()) && Login.checkClientId())
{...}
With no internet, it will hit the else statement and does not display this behavior.
CODE:
onResume() of the Main Activity, where I call the Second Activity:
#Override
public void onResume()
{
super.onResume();
//Check If logged in, else go to login page
Login.setContext(getApplicationContext());
//Reset Notification Number
GCMIntentService.cancelNotifications();
/** GO TO LOGIN **/
if(!Login.isLoggedIn())
{
//If user is not logged in, open login page
System.out.println("RESUMING MAIN AND STARTING LOGIN INTENT");
Intent intent = new Intent(ActivityMain.this, ActivityLogin.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else
{
Login.setupStuffOnce();
Event.pullEvents(); //Get New Events
//Update ListView
updateMainFeed();
}
}
This is the Second Activity:
public class ActivityLogin extends Activity
{
private String postData;
//private Context c;
//final Timer timer = new Timer();
//Facebook Stuff
private Facebook facebook = new Facebook(Config.FBAPPID);
private AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
//Layout Stuff
EditText username, password;
Button loginButton, signupButton;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Open Database
Login.setContext(getApplicationContext());
Database.open(getApplicationContext());
}
/*
* #Override public void onPause() { s }
*/
#Override
public void onResume()
{
super.onResume();
// shouldn't put here but oh well
init();
//If coming from ActivitySignup
if(Transfer.username != null)
{
username.setText(Transfer.username);
password.setText(Transfer.password);
Transfer.password = null;
Transfer.username = null;
loginButton.performClick();
}
}
public void init()
{
Login.getUserLoggedIn();
if (Login.isLoggedIn())
{
//Do Any Additional Setup
Login.setupStuffOnce();
// If user is logged in, open main
Intent intent = new Intent(ActivityLogin.this, ActivityMain.class);
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else if (Network.haveNetworkConnection(Login.getContext()) && Login.checkClientId())
{
// Else, Make User Login
// Inflate Login and Present Website
String clientid = Login.getClientId();
System.out.println("clientid:" + clientid);
//System.exit(0);
postData = "mobile=1&client_id="+Login.getClientId();
// Inflate the view
setContentView(R.layout.activitylogin3);
username = (EditText) findViewById(R.id.username);
password = (EditText) findViewById(R.id.password);
//Inflate the Button
loginButton = (Button) findViewById(R.id.loginButton);
signupButton = (Button) findViewById(R.id.signupButton);
signupButton.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
Intent intent = new Intent(ActivityLogin.this, ActivitySignup.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(intent);
}
});
loginButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
int res = Login.sendLogin(username.getText().toString(), password.getText().toString());
if(res == 202)
{
//Login Successful
//Check if facebooked.
if(Login.isFacebooked())
{
//Just go to main
Intent intent = new Intent(ActivityLogin.this, ActivityMain.class);
//Are these flags necessary?
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else
{
//Go to facebook login page
//Intent intent = new Intent(ActivityLogin.this, ActivityFBLogin.class);
//startActivity(intent);
//Login via Facebook
doFacebook();
}
} else
{
System.out.println("Login Failed: "+res);
if(res == 405)
{
Toast.makeText(getApplicationContext(), "Incorrect Username/Password", Toast.LENGTH_SHORT).show();
password.setText("");
}
else
Toast.makeText(getApplicationContext(), "Network Error", Toast.LENGTH_SHORT).show(); //Not entirely true in all cases i think
}
/*Login.getUserLoggedIn();
if(Login.isLoggedIn())
{
Intent intent = new Intent(ActivityLogin.this, ActivityMain.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else {
Toast.makeText(getApplicationContext(), "Please Login Above", Toast.LENGTH_SHORT).show();
}*/
}
});
} else
{
// Not Logged In and No Internet Access
setContentView(R.layout.activitylogintext);
EditText text = (EditText) findViewById(R.id.text);
text.setText("No Internet Connection Detected\n requires internet to login");
Button button = (Button) findViewById(R.id.refreshButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
//Login.getUserLoggedIn();
if(Network.haveNetworkConnection(Login.getContext()))
{
Intent intent = new Intent(ActivityLogin.this, ActivityLogin.class);
//intent.setFlags();
startActivity(intent);
} else {
Toast.makeText(getApplicationContext(), "No Internet Access Detected", Toast.LENGTH_SHORT).show();
}
}
});
}
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
facebook.authorizeCallback(requestCode, resultCode, data);
}
public void doFacebook()
{
facebook.authorize(this, Config.facebookPermissions, new DialogListener() {
#Override
public void onComplete(Bundle values) {
/*SharedPreferences.Editor editor = state.edit();
editor.putString("access_token", facebook.getAccessToken());
editor.putLong("access_expires", facebook.getAccessExpires());
editor.commit();
*/
//Input into database
Login.saveAccessToken(facebook.getAccessToken());
Login.setFB(facebook.getAccessToken());
//Login.sendAccessToken(facebook.getAccessToken());
//Intent into Main Activity
Intent intent = new Intent(ActivityLogin.this, ActivityMain.class);
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
#Override
public void onFacebookError(FacebookError error) {
Toast.makeText(getApplicationContext(), "Error: "+error.getErrorType(), Toast.LENGTH_SHORT).show();
}
#Override
public void onError(DialogError e) {
Toast.makeText(getApplicationContext(), "Error: "+e.getMessage(), Toast.LENGTH_SHORT).show();
}
#Override
public void onCancel() {}
});
}
public boolean checkForUserID(Context c)
{
try{
String res = Network.getUrl("www.website.com/mobile.php?got_user=1&client_id="+Login.getClientId());
JSONObject json = JSON.constructObject(res);
if(JSON.handleCode(json))
{
if(json.getString("type").equals("userid"))
{
Login.setLogin(json.getString("data"));
return true;
}
}
} catch(Exception e)
{
//Silent Fail
}
return false;
}
}
I believe that the problem will be resolved if you finish your MainActivity after you call SecondActivity. The problem probably is that the onResume event is immediatelly fired when you resume your MainActivity. That is because the MainActivity was probably destroyed and recreated while it was in background. Another solution would be to save your Activity's state with onSaveInstanceState. See here for more information.
Check this code in your activity:
Button button = (Button) findViewById(R.id.refreshButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
if(Network.haveNetworkConnection(Login.getContext()))
{
Intent intent = new Intent(ActivityLogin.this, ActivityLogin.class);
//intent.setFlags();
startActivity(intent);
} else {
Toast.makeText(getApplicationContext(), "No Internet Access Detected", Toast.LENGTH_SHORT).show();
}
}
});
Here you are calling ActivityLogin itself.
That's why the onCreate() is being called again and again.
I had a similar problem once. The problem occurred because I made configuration changes without declaring them in the android:configChanges attribute of the <activity> tag (and hence it recreates itself the whole time).
For example, if you change the locale manually you need to add locale to android:configChanges!
It seems to me there is a good chance for endless cycling here if Login is not properly shared between the activities, causing Login.isLoggedIn() to return true in ActivityLogin but false in ActivityMain.
A few critical factors are where your Login object is located, is it static, how is it referenced between Activities? It is entirely possible that ActivityMain is being destroyed while ActivityLogin is active; storing the Login data in SharedPreferences or a database, or otherwise persisting it is important. How does isLoggedIn() resolve (determine its return value?)
Suggestion 1: Consider making use of the Singleton pattern (if you haven't already.)
Suggestion 2: While discouraged, you could store Login at the Application level.
Suggestion 3: You can try using Intent.FLAG_ACTIVITY_SINGLE_TOP to reduce the likelyhood of a new ActivityMain being created - which might not have access to Login, again depending on how you have it stored.
ActivityMain
onResume() {
if(!Login.isLoggedIn()) {
/* Not logged in, launch ActivityLogin! */
Intent intent = new Intent(ActivityMain.this, ActivityLogin.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
ActivityLogin
onResume() { /* ... */ init(); }
init() {
Login.getUserLoggedIn();
if (Login.isLoggedIn()) {
/* Internet - launch ActivityMain! */
Intent intent = new Intent(ActivityLogin.this, ActivityMain.class);
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); // <--- suggested addition
startActivity(intent);
else if (Network.haveNetworkConnection(Login.getContext()) && Login.checkClientId()) {
/* No internet, the user was unable to login. */
}
I think your main problem is with you onResume function as it gets called each time it comes back into view (eg: you start second activity, finish it, main activity onResume is called again. If you finish your second activity (or it quietly crashes for some reason) you will go back to your mainActivity and call onResume (which will start the cycle all over again).
Now i dont know if you are finishing activity 2 somehow but I would check that.
EDIT:
ALso I would put some logcats here
if (Login.isLoggedIn())
{
//Do Any Additional Setup
Login.setupStuffOnce();
// If user is logged in, open main
Intent intent = new Intent(ActivityLogin.this, ActivityMain.class);
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
Log.i("Some Tag", "Starting Main Activity From Activity 2");
startActivity(intent);
}
The above adding of the log.i will allow you to know if this is where the error happens, and you can go from there.
I had similar problem where the activity would be recreated all the time. Re-installing the app wouldn't help, but restarting the phone did the job.
I have a simple app that I'm putting together for my company. I have 4 buttons that I've created but can't seem to get them to link correctly. One button should open our mobile site, another button to call us, another button to map to us, and the final button linked to our "News" site. Any help would be greatly appreciated!
On your buttons, you should set OnClickListener, and to do some required actions you could see the example below:
To Open a Map with Certain Location
mapButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("geo:0,0?q=" + your-location-geo-address));
startActivity(i);
}
});
To call certain number
callButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + telephone-number));
startActivity(i);
}
});
To open a website
linkButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(website-address));
startActivity(i);
}
});
Change "location-address", "telephone-number", and "website-address" with your own String value.
I hope this helps.
anmustangs answer is very good, but one thing I would like to add for the button you are making for a link to your site, where anmustangs wrote (website-address) instead of just typing in a site, it needs to put formatted correctly. For example, you can use "http://www.google.com" and yes you do need to use the quotation marks I put in there. I know I am years late to this thread but who knows who my post may help.