Android :: Way To Test OnCreate With Saved Bundle?
Jun 10, 2010
My app launches the camera to allow the user to capture a picture. Sometimes this causes the OS will kill my App to free up memory for the camera. Once the picture is taken, my app starts back up where it left off using the Bundle I saved in onSaveInstanceState(). My app had a bug where in the code that restores the state. Is there anyway that I can simulate or test this case to make sure I am restoring correctly now? It seems I am having trouble making this happen when I want to test it.
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Feb 16, 2010
I've recently done quite a bit of work on saving instance state and restoring using parcelables for custom data structures. My problem is that I don't know how to test this functionality on the emulator. I can trigger calls to onPause and onStop for my activity (if I navigate out of it) but never onDestroy. So, whenever my app starts up, it starts with a null bundle. I've never had onCreate with a non-null bundle and I've never had onRestoreInstanceState getting called. how I can test the restore state functionality from the emulator?
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Nov 7, 2010
Where is the UI state information (used in super.onCreate(Bundle savedInstanceState)) stored and how can it be deleted from another app or command line on a rooted phone?
I need to delete the user data (username, password) of both the native Facebook app (com.facebook.katana) and the stock browser on Android (com.android.browser) on a rooted phone via command line (which I call from my own app) or elsewhere from my own app.
This is what I'm calling:
rm /data/data/com.android.browser/cache/webviewCache/* rm /data/data/com.android.browser/databases/* killall -9 com.android.browser
rm /data/data/com.facebook.katana/cache/webviewCache/* rm /data/data/com.facebook.katana/databases/* killall -9 com.facebook.katana
After I kill the facebook process, I check the running processesand there is no FB process running anymore. I then restart FB via long-press on home and choosing the FB app. Previous username/password still show on the login screen (= same screen as I left it before I killed the app). When I then press 'back' on the device, and then start the app again via home long-press / select FB, the login screen is empty.
Where do the values for username/password come when I start FB again in the first place? I assume that the login activity still retrieves the savedInstanceState, but how could that be avoided - or else, where are those UI states actually stored, in order to delete them? Shouldn't the restarted app, after all it's processes are killed, already be in a new lifecycle?
Same problem is with the stock browser: if i leave the browser and I'm on the login page of for example gmail.com where the username/password is entered (but form not submitted yet), then killing the browser process, the values (username) entered into the form will still be there after restarting the app again after it's been killed.
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Jan 29, 2009
When implementing an ActivityInstrumentationTestCase, how do you start the activity with a Bundle of saved state?
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Sep 24, 2010
I'm writing an Android JUnit test and want to copy/reset a test fixture file (it's an SQLite database file.) If I were within the main application, I know I could just place the file in the assets directory and use getResources().getAssets().open(sourceFile).However, this API appears to be unavailable from the ActivityInstrumentationTestCase2 class.Is there an easy way to copy a file over from the testing PC, or should I just keep a fresh copy of a test fixture on the device and copy it over a temporary file?
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Aug 23, 2009
I am using ActivityInstrumentationTestCase2 to do some test for an activity. I get a button in the setUp() method like this: protected void setUp() throws Exception {super.setUp(); act = getActivity(); btn = Button)act.find ViewById ( R.id.bike_button ); // this button has been defined in layout} Then I use this button to perform a click in a test method like this: public void testBikeButton(){ //click the bike button btn.performClick();}
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Sep 28, 2010
Please, I need advice on how to get phone numbers saved on the phone up when forwarding received SMS or MMS! At the moment, I can only forward messages to contacts saved on Sim card!
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Aug 11, 2010
I have never used JUnit before, and now I'm trying to set it up on an Android project.My project under test is fairly complex, including some JNI, but my test project, at the moment, is completely trivial. I have found many examples (that look totally different) online of how to make a test project, but it seems that no matter which one I follow, I get the same results.Here's my JUnit project code:package com.mycompany.myproject.test;
import android.test.AndroidTestCase;public class SimpleTestCaseExample extends Android TestCase {public void test_testOne() {fail("Just Always Fail");When I run, I see the following in Logcat:
stdout INSTRUMENTATION_STATUS: numtests=2
stdout INSTRUMENTATION_STATUS: test=test_testOne
stdout INSTRUMENTATION_STATUS_CODE: 0
stdout INSTRUMENTATION_STATUS: id=InstrumentationTestRunner
stdout INSTRUMENTATION_STATUS: current=2
stdout INSTRUMENTATION_STATUS: class=com.mycompany.myproject.test.SimpleTestCaseExample
stdout INSTRUMENTATION_STATUS: stream=
stdout INSTRUMENTATION_STATUS: numtests=2
stdout INSTRUMENTATION_STATUS: test=testAndroidTestCaseSetupProperly
stdout INSTRUMENTATION_STATUS_CODE: 1
stdout INSTRUMENTATION_STATUS: id=InstrumentationTestRunner
stdout INSTRUMENTATION_STATUS: current=2
stdout INSTRUMENTATION_STATUS: class=com.mycompany.myproject.test.SimpleTestCaseExample
stdout INSTRUMENTATION_STATUS: stream=.
stdout INSTRUMENTATION_STATUS: numtests=2
stdout INSTRUMENTATION_STATUS: test=testAndroidTestCaseSetupProperly
stdout INSTRUMENTATION_STATUS_CODE: 0
stdout INSTRUMENTATION_RESULT: stream=
stdout Test results for InstrumentationTestRunner=..
stdout Time: 0.07
stdout OK (2 tests)
stdout INSTRUMENTATION_CODE: -1
But, I get the following in the Console:Launching instrumentation android.test. Instrumentation TestRunner on device emulator-5554 Collecting test information Test run failed: No test results I have tried a variety of different things, messing with the basic TestCase class, or the TestSuite class, or a variety of other options. I tried to just go for the most trivial example because I'm really still trying to learn how this works.Whatever I try, I see this error.
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Nov 9, 2010
I'm working on a school project and I'm researching testing possibilities for Android applications. On this page: http: // developer . android . com/ resources / tutorials /testing /hello android. Google writes about a unit test. Is this really a unit test? A Unit test will not integrate all classes and will not test in his context. So my opinion is it is not a Unit Test but an Integration Test.
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Jul 15, 2010
One more video about the fancy touchscreen of the Droid X. This one has happier results! Check it out at the link below.Droid X Touchscreen Test See you later. you'll know why this post is short when you read the blog. running downstairs!
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Nov 10, 2011
I have a project (that compiles and runs in the emulator.) I have a test project that tests part of this project. This test project also compiles with no problems, but when I try to run (test) it in the emulator, I get a NoClassDefFoundError exception on one of the classes my test class tests (I hope that made sense!) when it starts to run in the emulator. This is coming out of the adb log. I looked in the bin directory (of the test project) for the missing class, but could not find it... Should it be there? I found no reference (apk, etc) of the project I am trying to test either in the test projects bin directory. How does the test project get the classes it needs to test against (in the classpath, I assume.) How do the tested classes get moved to the emulator? I did try running the app before testing, so I know it is installed and runs correctly. BTW, I am using netbeans with the nbandroid plugin.
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Jul 16, 2010
I am unable to integrate Junit with Android. I am using Junit 3, I have also tried Junit4.
package* com.android.test;
import* com.android.MyActivity;
import* android.app.Activity; *
import* android.test.ActivityInstrumentationTestCase2;
public* *class* TestMyView *extends *
ActivityInstrumentationTestCase2<MyActivity> {
Activity myActivity ;
*public* TestMyView(String pkg, Class<MyActivity> activityClass) {
*super*(pkg, activityClass);
myActivity = getActivity() ;
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Jan 13, 2010
Is it possible to use bundle and save the data in OnPause() lifecycle method? The scenario is i have 2 edit text and have entered some data i want to retain the data when the activity is killed and started again. his can be achieved using onSaveInstanceState() but as documentation says, this method is not a lifecycle method and hence the callback is not guaranteed. So i wanted to know if there is a way to save it using Bundle in onPause().
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Jul 27, 2009
I'm well aware of onSaveInstanceState(Bundle b) and the corresponding onCreate and onRestore. What I want to do is persist the bundle somewhere simple where I'll only ever have one at a time. The functionality is to be able to resume a game from its previously stored state - not to be confused with restoring the activity during its lifecycle. I want to restore it AFTER it's been destroyed (think of turning the phone on and having a button on the game that says, "resume last game". My thoughts are that if I can just persist the bundle that I normally use for the instance state, then I should be able to reload it later upon user request. I don't want to use a provider because they seem way too over the top for what I'm doing.
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Apr 8, 2010
I'd like to serialize a Bundle object, but can't seem to find a simple way of doing it. Using Parcel doesn't seem like an option, since I want to store the serialized data to file. Any ideas on ways to do this? The reason I want this is to save and restore the state of my activity, also when it's killed by the user. I already create a Bundle with the state I want to save in onSaveInstanceState. But android only keeps this Bundle when the activity is killed by the SYSTEM. When the user kills the activity, I need to store it myself. Hence I'd like to serialize and store it to file. Of course, if you have any other way of accomplishing the same thing, I'd be thankful for that too.
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May 11, 2010
I'm trying to pass a bundle of two values from a started class to my landnav app, but according to the debug nothing is getting passed, does anyone have any ideas why?
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Apr 22, 2009
I am implementing notification handler which logs any changes in content provider and it notifies Broadcast Receiver using custom Intent on periodic basis.But problem here is from Provider to Receiver all the values passed through Bundle.
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Nov 22, 2010
I need to pass a reference to the class that does the majority of my processing through a bundle. The problem is it has nothing to do with intents or contexts and has a large amount of non-primitive objects. How do I package the class into a parcelable/serializable and pass it to a startActivityForResult?
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Apr 20, 2009
What's the correct way to pass a bundle to the activity that is being launched from the current one? Shared properties?
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Sep 18, 2010
I have 2 dimensions array like this: public myArrayType[][] mObjArray; I want to save it in the onSaveInstanceState method, since my array contains lot of elements I don't want to save element by element but the whole array object, what is the best way?
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Oct 29, 2012
I've gone through the Notepad Tutorials and they are all working on my virtual device. I am now stuck in the midst of trying to write my own Android app.
My setup:
Windows 7 SP 1 64-bit
Eclipse Indigo Service Release 2
Android Development Tools 16.0.1.v201112150204-238534
Android Virtual Device Platform 2.3.3, API Level 10, CPU/ABI ARM (armeabi)
The app is about as simple as they come - you enter a number, it divides it by another number and displays the result.Here is the code involved:
AndroidManifest.xml:
Code:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.driving"
android:versionCode="1"
android:versionName="1.0" >
[code]...
By the time DrivingTimeEstimator's onCreate() method gets executed, the Bundle object (savedInstanceState) is null (which I'm guessing is what leads to mMiles being null, which throws a NullPointerException and kills everything).
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Mar 17, 2009
why CheckBox is always null.
<CheckBox id="@+id/checkbox" android:layout_width="wrap_content" android:layout_height="wrap_content" />
code file-
package com.reblogr.reblogrclient;
public class Test extends Activity { /** Called when the activity is first created. */
public CheckBox checkbox;
@Override public void onCreate(Bundle savedInstanceState) { ....................
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Apr 22, 2010
So I have a MapActivity that runs an asynchtask that occasionally updates what exactly it's displaying on the map (via a string). I originally pass this string in from the intent when the activity is first created. And then if you click on one of the drawables on the map, it opens a new activity, which can then create a new mapview (same class) with a different string setting. The problem I have is that I only want one instance of the mapview to be running at once. Thus I set android:launchmode="singletask" in the manifest. This works in that it brings the mapactivity to the front, but is there any way to send it a new intent bundle to get a new setting for the string it needs? I tried regetting the extras from the bundle, but it seems to retain the old bundle, not the new intent that was passed to it. I'm not sure I want to do startActivityForResult because the 2nd activity may or may not want to update the original activity. I hope that made sense. I can post code if necessary, but I think that should explain my situation.
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Oct 6, 2009
Just upgraded my phone firmware to 1.6, and it looks like Location objects don't have satellite counts in them any more:
locMan = (LocationManager)con.getSystemService (Context.LOCATION_SERVICE); Location loc = locMan.getLastKnownLocation (LocationManager.GPS_PROVIDER); Bundle extraBundle = loc.getExtras();
extraBundle is null. So, I can't call
extraBundle.getInt("satellites").
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Jan 2, 2010
I am trying to use Android's LocationManager requestLocationUpdates. Everything is working until I try to extract the actual location object that in my broadcast receiver. Do I need to specifically define the "extras" to my custom intent so that the Android LocationManager before I pass it to requestLocationUpdates so it knows how to add it into the intent, or will it create the extras-bundle regardless when it passes the fired intent to the broadcast receiver?
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Sep 16, 2010
I have an application that uses a service to create an ArrayList of custom objects (MyObject) every x seconds. I then want my Activity to obtain this ArrayList. I'm currently planning on having the Service send a message to the Activity's handler every time it finishes the query for the data. I want the message to the Handler to contain the ArrayList of MyObjects. When building the method in the Activity to get this ArrayList out of the message, I noticed that I couldn't.
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Nov 24, 2009
My android app fetches a JSON structure from the net. It's somewhat large, maybe 2,000 characters in length. I need to store it away when my app gets killed so I can recover it quickly. I've tried saving it to an sqlite database, but that takes about 400ms, kind of long. I wonder if it's bad practice to just dump it into the save bundle:or are we really only supposed to be putting the smallest of items in bundles?
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Apr 30, 2010
This is a bit complicated to explain (and my first post), so bear with me please: I am currently trying to figure out the best way of saving my application's state in a bundle on the onSaveInstanceState event (working on a game). My application's state is based on a "world" class which contains various objects. Among these objects there is a creature object which contains bitmaps (Bitmap object)(allowing me to draw the various sprites of the creature when it's walking with more flexibility and accessibility).
Bit of creature constructor Java:
CODE:.................
After looking around for a few hours I found that serializing the world object (and all its sub-objects) was an acceptable way of saving it in the bundle. Unfortunately it appears that we can't serialize bitmaps and considering they're a part of my "creature" I can't seem to see a workaround.
Here come my questions: 1- Am I doing something fundamentally wrong? (not supposed to save bitmaps in objects? supposed to handle bitmaps in a separate class which I don't pass on the bundle and reload my bitmaps when restoring the application? ...) 2- Is there another way of passing my "world" object into my bundle (would using Parcelable work?)
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Nov 9, 2009
In an Activity, I have some snippet of code that fires off a Message...
Why is the Bundle not preserved in the Message ? Who is resetting the values of the Bundle ?
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Oct 5, 2010
I would like to pass a considerable sized amount of data (~1500 bytes) between two applications in Android where performance and resource allocation is a priority. The data is basically key-value pairs. The rate at which it needs to be passed from one application to another can vary from a trickle to ~50 packets within a second. I figure I can either:
Wrap all the data inside a bundle, and pass the bundle via an Intent from one application to another. I worry about the performance implications of allocating and de-allocating all that memory to store the bundles.
Write all the data to a SQLite database and provide it to the other application via a content provider. Here I worry about the performance implications of writing all that data to disk, and then having to read it back from disk when it is requested. So, which is the lesser of two evils?
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