I am writing an android application that check the username and the password of the user once a login button is clicked
i run the app in the emulator and when i click on login button the application is crashed code...
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First of all, maybe i went about this the wrong way in the first place. Situation is, i have a listview that when an item is clicked, it creates an intent and calls startActivityForResult() to another activity, to be able to edit the entries in the row. and that other activity after editing the required values, returns back to the calling activity, when the user clicks on a save button. The activity then uses the row Id to update the item.My problem now is that, if the user presses the BACK button instead, the application crashes. i have been looking around and see solutions like using Shared Preferences or onSavedInstanceState(), but i don't know where exactly i should be putting the code?
View 1 Replies View RelatedI am trying to open up Gmail Compose screen when a button is clicked in my Android App.
Do I need some API key for this from Google? or what do I need to do in my button onClickListener?
How can i change the button name when click on that button...? button.setText("click") ; is not working...
View 2 Replies View RelatedI have 3 buttons on the screen and i have to perform different task according to the button clicked ,how can i check which button is clicked.
View 4 Replies View RelatedI want to show this array as a listview in a new screen when a button is clicked.
ArrayList<String> favorite = new ArrayList<String>();
This ListView is a small part of my class. i cant seem to figure out how to implement it with my code (i can figure out how to create a listview in a separate application, and set the onitemclicklistner just for that listview) i want to display that listview when.
case R.id.ShowFavButton:
I am working on Android Application. I want to have 4 buttons to be placed horizontally at the bottom of the screen.In these 4 buttons 2 buttons are having images on them.The border of the buttons should be black color and the border should be as thin as possible.When I click the button, I want the back ground of the button should be changed to blue color with out the color of border to be changed and should be remained in that color for some time. How can I achieve this scenario in Android.
View 2 Replies View RelatedMy LinearLayout has a button and a WebView. The problem is that only the first one in layout can be clicked, the other is not. If I put WebView first into the layout, the button is not clickable. If put button in the layout first, then WebView is not clickable.Is there a setting to enable this?
View 7 Replies View RelatedI have a image view and on top of it i have a button. now what i want is when i click on the button i should get a list of images on same Activity.actually i am trying to make a list in button,s onClick event. event gets fired but it does not show the list. anybody can have any idea how shall i achieve this i am also making my layout programmatically.
View 1 Replies View RelatedCreating a game in Android using multiple Buttons to display an image from the drawable folder. I want to change the button to a different image after the button has been clicked on.
Here is the button code:
CODE:.............
I can't find anything about how to change the actual image of the button. You can change the color of the button by using the following code in the java file: b36.setBackgroundColor(0xAA00AA00);
I am trying to implement a drop down list when a button is clicked.
So, I have a text view and a button in a navigation bar(nav.xml) and a corresponding list view. This navigation bar is included in another page( products.xml)
when the button is clicked i get the list view right below the button(which is what i want to achieve) but its my moving all the contents on the current page downwards, even the text view which is placed in nav bar moved downwards.
I am totally new to Android, any sample examples or a way how to achieve it?
Is there a easy way to initiate a call from a button in an Android app?
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I have a GridView with a BaseAdapter that cycles through the elements making views for each element or cell in the grid.
What I would like to do is create a clickable image/button, and when the user clicks or touches it, for it to remain clicked and highlighted so that they make click on several if they so choose.
I have tried, ImageButtons, Buttons, ImageViews, LayerDrawables(with a swapable background color drawable), ToggleButtons, CheckBoxes, derived my own CompoundButton, but nothing seems to work.
I was a teeny bit successful with a ImageButton where I could create it selected, but if the user clicked on it, I couldn't get that visual state back.
I am trying to run an application on an android emulator, but it crashes. i am following a howto
i don't know what to do, it just crashes. other applications are running fine, can anyone tell me what i am doing wrong.here is the code...
It might sound a little odd but I am in the final phases of finishing up my app that would pay users. There is an activity in the app where as and when the users use the app, money keeps accruing. I have a button in that activity called Cash Out which when the user reaches a certain amount can be clicked and is supposed to let the users take the money accrued from the app. I have contacted Google Checkout and Paypal so far and Paypal suggested personal payments can be integrated in my case and sent me the Paypal for Android API doc. The doc itself is very useful but does not describe this kind of a scenario that I am looking for. Any clues how to integrate such a functionality.
View 1 Replies View RelatedI am very new to android programming. i was following a guide in here, to create an application that shows the current location, i did as was told in the guide, but whenever i try to run it, it crashes, and asks for "force Close",
does somebody know what i am doing wrong? here is the code....
I'm a student and currently doing my senior capstone project. I have problem with my codes on audio recording. whenever i clicked the record button in the emulator, it shows me an error alert, "The application Audiorecording (process) has stopped unexpectedly. Please try again." can anyone help me? Code...
View 3 Replies View RelatedI am tryout a very simple thing in an activity. It has three components laid out vertically in a linear layout - button, textview1, and textview2. All I want to do is to toggle visibility of textview1 when the button is clicked. So I have the following onclick handler for the button:
[HIGH]public void onClickMe(View view){
TextView thetext =(TextView)findViewById(R.id.thetext);
if(displayText){
thetext.setVisibility(TextView.INVISIBLE);
} else {
thetext.setVisibility(TextView.VISIBLE);
[code]...
The textview does get visible and invisible but the problem is when the textview is made invisible it leaves a big gap between the button and the textview2. I would like the textview2 to be moved the the position where textview1 was. I think it is something to do with relayout but not sure what needs to be done here. I tried multiple things as shown in the code above.
In my class I have an OnTouchEvent and when a certain area is clicked, it will play a sound (Not sure if this is the best way to go about this?). However I have been running into bugs using the MediaPlayer. Sound will double play and then eventually sound will stop completely. I am wondering how to efficiently play 5 sounds. The user will be clicking the screen in different areas and different sounds will be playing. I have the attached code below but it only has the first area. Say I add in another area how would I go about changing the media player to play a different sound.
@Override public boolean onTouchEvent(MotionEvent e) {
x = e.getX(); y = e.getY();
if (x >= 232 && x<=287 && y>=117 && y<=157) {
//PLAY SOUND } return true;
Is there any way to determine when the user clicked the app icon to launch the app ? I mean say a user was using my app. Then he presses the home key as a result of which the app goes to the background. After sometime he clicks the app icon again. My question is do I get a call-back for this?
View 3 Replies View RelatedI have a dialog with edittext for input. when i click yes button on dialog, it will validate the input and then close dialog. However, if the input is wrong, i want to remain in the same dialog. every time no matter what input it is, the dialog always automatically close when i click button. How can i disable this. By the way, i use PositiveButton and NegativeButton for the button on dialog
View 2 Replies View RelatedIn my android application i have a video list screen,a buffering screen and a videoplayer screen.
As soon as the user clicks an item from videolist screen ,he is navigated to buffering screen and then to videoplayer.
In the buffering screen i am using Async task and doing the loading process in on background process.
Now my issue is like the user if has selested a video then gets navigated to buffering screen.But if the user clicks back when he is in buffering screen then initially he is getting navigated to videolist screen but immediately after that again he is navigated to videoplayer screen.
What i would like to have is either the back button should be made disable in buffering or should prevent the player tostart if back is clicked.
I like tu use the MapActivity to display some pins. When a pin is pressed i like to open a description. This can I obtain following the tutorial: http://developer.android.com /resources /tutorials/views/hello-mapview. But now I like to put a button on the overlay window. That button should open a detail activity. How can I make this? How is possible to personalize the overlay "info window"?
View 2 Replies View RelatedI need to emit a signal "clicked" to a button. How can I do it ?
View 5 Replies View RelatedI'm building a google map application that marks several points on the map. I'm currently trying to get the dialog box to appear when the marker is clicked. Right now, the markers appear at the right places but when i click them, the entire application stops unexpectedly/forced to close.Does anyone have any suggestions on what is wrong and how i should go about fixing it?
View 1 Replies View RelatedintentTest.java:
package intentTest.xyz.com;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button
public class intentTest extends Activity {
Button b;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b = (Button) findViewById(R.id.b);
b.setOnClickListener( new View.OnClickListener() {
public void onClick(View view) {
Intent intent = new Intent(intentTest.this,seond.class );
startActivity(intent);
}});
}}
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="First screen"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="click"
android:name="@+id/b"
/>
</LinearLayout>
seond.java:
package intentTest.xyz.com;
import android.app.Activity;
import android.os.Bundle;
public class seond extends Activity{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
} }
second.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="second screen"
/>
manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="intentTest.xyz.com"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".intentTest"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".seond"></activity>
</application>
</manifest>
I get the following error code:
11-16 01:26:07.156: ERROR/AndroidRuntime(779): Uncaught handler: thread main exiting due to uncaught exception
11-16 01:26:07.166: ERROR/AndroidRuntime(779): java.lang.RuntimeException: Unable to start activity ComponentInfo{intentTest.xyz.com/intentTest.xyz.com.intentTest}: java.lang.NullPointerException
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.access$2100(ActivityThread.java:116)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.os.Handler.dispatchMessage(Handler.java:99)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.os.Looper.loop(Looper.java:123)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.main(ActivityThread.java:4203)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at java.lang.reflect.Method.invokeNative(Native Method)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at java.lang.reflect.Method.invoke(Method.java:521)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at dalvik.system.NativeStart.main(Native Method)
11-16 01:26:07.166: ERROR/AndroidRuntime(779): Caused by: java.lang.NullPointerException
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at intentTest.xyz.com.intentTest.onCreate(intentTest.java:18)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
11-16 01:26:07.166: ERROR/AndroidRuntime(779):
... 11 more
I want to use a map in my application but I can't get it to run.
It always crashes with the following error:
CODE:.....
My XML file:
CODE:...................
My layout:
CODE:...............
In my code I add the map like this:
CODE:.............
Can someone explain to me why this AlertDialog crashes? code...
View 1 Replies View RelatedIn my application I've implemented such that pressing the hardware volume keys displays a Toast with the current volume. Things go well most of the times. However long presses of the volume keys do succeed in crashing my application. The Log generated on crash is the following...
The approach I follow:
I have a toast Object and for every key press event detected I inflate a view ,set the view elements within, set it to the toast and then show the toast.
Any idea what is going wrong ? code...
My app crashes when the device orientation changes..Tried debugging on real device, but I have no clue where the crash exactly happens.. I would appreciate if someone could throw some light on this:
Below is the error log...