I have created 3 tab in my application and every tab has it's own view. in tab 1 i have a button on top which load another view on same tab but when that view load tab has been hidden this is my problem, i want view switching with in single tab by click on button.
I am not able to change the activity with tab by clicking on button.
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I just started working on android(beginner). I'm stuck in the activity state complexity. I created two activitys(activity1 and activity2). wen i move from the activity1 to 2 and then back to activity1 using a button(back of activity)the values(states) of the views are not restored. here is the code...
View 1 Replies View RelatedEverywhere I look online, it seems that I must use an animation to change views dynamically (like slide in, out). Do I have to do this, or can I simple just setContentView() on each new activity?
View 1 Replies View RelatedButton showmapButton = (Button)findViewById(R.id.showmap);showmapButton.setOnClickListener(new View. OnClick Listener() {public void onClick(View v) {Intent intent = new Intent(HomePage.this, ShowMap.class); intent. putExtra("username", value);startActivity(intent);In my main menu i have a button 'ShowMap' Everytime i click on showmap my map will hit a null pointer exception causing the program to crash. ShowMap' works fine if i launch straight to that page without having a need to click button to call that activity.I tried changing all my files to "extends MapActivity" instead of regular activitiy but the program will still crash whenever i click on show map
View 2 Replies View Relatedi'm having the above problem when switching my activity. In the first activity i have a GalleryView showing all my images and an ImageView show the selected image from the gallery. Now i want to switch to the next activity and keep the same image from the ImageView on screen in the second activity. Here is how i show my images:Is there like an id or something saying what's on screen at the moment of the switch? How can i accomplish this?
View 2 Replies View RelatedI currently have a tab layout with 2 tabs, one tab with a list view and one with the option make strings so I can add them in the list view. Both tabs have their own activity because this made the code much more structured, and I dont have to repeat my self later.
Lets say im in the tab that offer me to create an string, and i press the update list button, how do I update the list view without startActivity()? If i use startActivity(), it starts List.java, and instead of displaying the list in the list view tab, it takes full screen, which defies the purpose of the tab view. In other words, the startActivity() steals the focus from the tab view of the list, and sends it fulscreen.
I want to update the activity in my list view tab, without starting a new activity that goes to fullscreen, and doesnt update the one in the tab.
I have a 3 nested ViewFlippers which seem to be working ok except that when I change the screen orientation the view flip back to the first one of my views, giving the user the impression it went back a few steps.I am a bit stumped as to what to do and was hoping someone had some experience with this.
View 3 Replies View RelatedAnyone having issues with lock ups or the screen rapidly switching from normal view to helicopter view? The only things that takes care of it for me is pressing the power button twice.
View 2 Replies View RelatedI want to show my next activity withing my previous activity layout "LinearLyout". But it is not working. Can any one help? I put my last activity layout reference to a global class in an static variable. My code...
View 3 Replies View RelatedWhen views with different type have same id and screen orientation changes,
either java.lang.ClassCastException: android.view.AbsSavedState$1 or java.lang.IllegalArgumentException: Wrong state class -- expecting View State will occur. (depends on the view's order)
Because View.dispatchRestoreInstanceState() checks id only.
You may wonder why anyone would make views with different type to have same id.
But it can happen when you use tab activity.
Imagine you have tab activity with two children activity.
Tab1 is ListActivity and Tab2 is ExpandableListActivity.
Both activity have id of "@android:id/list" but the type of view is different.
This means we cannot use ListActivity & ExpandableListActivit at the same in one tab activity.
I have ListViewActivity
public class SelectActivity extends ListActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.select_one_of);
SimpleAdapter adapter = new SimpleAdapter(
this,
createChildList(),
R.layout.select_one_of_childrow,
new String[] { KEY_VALUE },
new int[] { R.id.selectoneof_add_new_item});
setListAdapter(adapter);
}
// ...
}
after setListAdapter() calls I would like to execute the following code:
((TextView) getListView().getChildAt(0).findViewById(R.id.selectoneof_add_new_item)).setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ticked, 0); but getListView().getChildAt(xxx) returns null and I catch NullPointerException. Where should I put mentioned above code-snippet?
I am working on developing an app and I am not sure when should I use a new activity and when should I update the existing view.
For example, lets say I have a view that shows a multiple choice question.Now, when the user selects his choices and clicks on say "Evaluate", I want to show the same question view but along with the right answers and explanations for each option. So does that mean, I should send an Intent upon a click on Evaluate or I should just update the view (i am not sure how)?
If I send an intent and show a new screen, how can the user go back to the next question without displaying the answers? If I don't create an new activity, how can I update the existing view that is already displayed?
I have a notification that starts my activity and passes a messages using the intent's putExtra() function. The message is then displayed to the user in the activity's onCreate function. When the application is restarted due to a orientation change, the message is shown again as it is still in the intent's bundled data.
How can I remove the extra data?
I tried the following:
Bundle bundle = getIntent().getExtras();
if (bundle.getBoolean("showMessage")) {
// ... show message that is in bundle.getString("message")
// remove message
bundle.remove("showMessage");
}
But the message will still be shown after the orientation changed, seems like the intent used is not the one I changed, but the original one. The only workaround I found is to save the showMessage additionally in onSaveInstanceState(). Is there another way? Or is this the way to go?
I have, for the time being, a custom view with a 9-patch image as a border.
That custom view is placed three times in a LinearLayout, so it looks like this:
+------------------------+
| CustomView |
+------------------------+
| CustomView |
+------------------------+
| CustomView |
+------------------------+
I have attached a click event listener to the View, so it is clickable. But then I click it, I cant see that I am clicking it - there is no change in color.
So, Im thought that I'd attach a "onPress" listener, and then change the background of the view but I couldnt find such a listener.
So, the question is - how do I create the behaviour on the View so I can see that it is being pressed? this is normally done in Android with a green background to indicate that it is now being pressed.
I am trying to run the application Maps which is built in the emulator, i just get a grids and no map. i did set the permissions of internet and fine and coarse, also got the apiKey too. I have looked into this http://code.google.com/p/android/issues/detail?id=3764 , so has there been no solution yet to run the Maps under proxy?
View 3 Replies View RelatedNearly every video I can't watch and get 'cannot connect to server' on moodio.fm radio stream.What to do?
View 6 Replies View RelatedI'm totally new to the android system.i am borrowing the g1 from a buddy considering this over my current phone.there is no Sim inside but it was activated before me using it.(so its running off wifi).i see nothing but free apps and it tells me there is no content for paid apps.i know the phone is fully updated, but is this due to me not having a Sim inside?i didn't think that would make a difference.
View 2 Replies View RelatedI have an Activity which gives me the following stack trace error and it looks to be out of my control (I could be wrong though as I'm a newb to Android).Can anyone point me in the right direction? (It happened when I clicked on the back button)
View 2 Replies View RelatedI have the Droid by Motorola from Verizon. I'm trying to use a youtube downloader to download youtube videos to my laptop and then convert them to AVI files and drag and drop them to my SD card so that I can view them on my Droid. The problem is the files either don't show up on the card when I attempt to play them on the device if they are in AVI format or if I choose not to change the format only the audio is played by the phone so I can't see any video. Any suggestions? I know this is a possibility because a coworker has done this on a BB Tour. I had him Bluetooth transfer some files and those show and play but the ones I'm attempting to tranfer by dragging and dropping the the files aren't working.
View 10 Replies View RelatedI am working on Android App and unable to synchronize View with Hardware. Let me explain.
1) I mute and unmute microphone of Android based on random values (which are random sleeps) stored in array A, from within run method of Thread 1.
2) I draw blue pulses that reflects the mutes of microphone. This is done by independent View class.
3)I move a red line across the graph drawn in above view, by calling from within onTick of a countdown timer.
I start the two threads one after other, this way:
Thread1.start counter.start();
How to synchronize both of these, I want to do three things at a time and avoid multiple threads. Three things are: Draw the pulses (which is constant), make the red line move across x axis and touch the blue pulse as soon as the phone is muted, and keep moving every second, the width of pulse reflects duration of delay. as soon as microphone is about to be unmuted, red line should leave the pulse and move forward. Currently, code is doing what I want. but there is no synchronization. Either microphone does its job first, or graph moves fast. They are not in Sync. Is there a way to hold a thread, force it to behave as coutdowntimer or sync both of them. I cannot embed the red line movement in thread 1 because, it will have to progress across x axis every second.
In my foo_layout.xml file I have a subclassed RelativeLayout:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.android.myapp.FooView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/pegboard_table"
android:orientation="vertical"
android:scaleType="fitXY"
>
<ImageView
android:id="@+id/triangular"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="@drawable/pegboard_board"
android:scaleType="fitXY"
android:gravity="center"
android:visibility="invisible"
/>
<Chronometer
android:id="@+id/timer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/timer_display"
android:textSize="40sp"
android:textColor="#000"
android:layout_alignParentTop="true"
android:gravity="center"
android:visibility="invisible"/>
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/board_table"
android:visibility="invisible"
/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center_horizontal"
android:background="@drawable/tab_bar">
<!-- android:layout_alignLeft="@id/options_tab"-->
<ImageView
android:id="@+id/game_select"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/game_select" android:paddingLeft="15sp"/>
<ImageView
android:id="@+id/undo_select"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/game_select"
android:layout_weight="1"
android:src="@drawable/undo"
/>
<ImageView
android:id="@+id/settings_select"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/undo_select"
android:layout_weight="1"
android:src="@drawable/settings"
/>
<ImageView
android:id="@+id/info_select"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/settings_select"
android:layout_weight="1"
android:src="@drawable/info"
This doesn't seem like the right behavior. I've tried it with other views inside the FooView hierarchy and findViewById() always returns null.
For the life of me I can't figure out what I'm doing wrong.
I am having a problem in running Android unit test. I got this error when I tried to run a simple test.
Here's the log:
CODE:.........................
This error occurs for Android less than 2.2. It works fine for Android 2.2 emulator. Yet Android 2.2 emulator has a bug of sending a key twice even though we only press it one. Application to be tested runs on Android 2.2 platform.
I am getting an error , when I try to access the shared preference from within class that extends View.
The Error : "The method getSharedPreferences(String, int) is undefined for the type ViewforRed" , where ViewforRed is my class: Here is the sample code...
I have a custom view that needs a reference to the activity that created it.Dianne Hackborn said in another thread: >Give your view a reference to the activity (or a Java interface it implements) and call back through that. >Much much MUCH more efficient than sending a broadcast. >See all of the standard view and view subclass callbacks for examples.
View 9 Replies View RelatedHow to open activity from view.i am develop a game if game is over i need to move user to main menu activity.Please help me its very urgent to me.
View 2 Replies View RelatedI want to have a view with several choices when I click an element of my ListView. I was thinking of implementing an AlertDialog but as I need more than 3 options it is not possible. I also thought of putting my ListView in a FrameLayout and have an view with a gone visibility that I would turn visible at the click and update the content but I don't know If it's a good idea. Code...
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View 3 Replies View RelatedI've got the following Button declared in my main.xml And I have the following methods in the activity. Code...
View 1 Replies View RelatedIt occur some problems to develop U/I. there is a PreferenceActivity that was aleady developped and is typecally like 'Settings' of android. by the way, the customer is requiring to change U/I like IPhone.Requirements are
1.application title-bar using ImageView(or TextView) positions to top
2. remove ContextMenu, alternativly static menu buttons positon to bottom.
3. PreferenceActivity is able to scroll and title-bar & menu buttons are fixed each positions.
just all. but It's very difficult to add & fix two views in Preference Activity.