- Fluue
- Jan 2, 2008
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I'm building a simple app that queries my site, gets the json response, then displays data in a view. I'm having trouble grasping how to pass data to a view, though. I'll be taking several fields from each response, and I assume I need to use a listview.
Does anyone have a guide that helped you understand passing data to views?
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Mar 4, 2013 16:57
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May 10, 2024 08:06
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- Fluue
- Jan 2, 2008
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What kind of data are you displaying? Listviews are meant for lists, and you'll want an adapter to use them properly. Is it sufficient to just have a plain old TextView? If so, then it's as simple as calling setText.
I'm making an app "clone" of my website http://randompokemongenerator.com
I'm assuming ListView is best because I'm looping rows (up to 6 max). I have a JSON response page setup that I'll use to take url GET values in the app based on user selections (same as on the website).
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Mar 5, 2013 01:12
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- Fluue
- Jan 2, 2008
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Hey everyone,
I'm working on a little hobby project just to learn my way around Android. I have a quick question about onClickListener, though.
My app takes in user input, sends the input to a php script, then the script returns some JSON and the app parses/displays the information.
I have my app taking data/sending to server/getting data and parsing in my main activity.. is this the wrong way to be doing it if users will press a button to initiate the data transfer? Right now my button and onClickListener don't seem to do anything.
Should I be using intents instead? (not really looking to do that right now, but I will if it's the only way).
Here's my code for the onCreate method
code: /**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//setup image loader
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext()).build();
ImageLoader.getInstance().init(config);
//input vars
final Spinner numPoke = (Spinner) findViewById(R.id.SpinnerNumPokemon);
final Spinner dexRegion = (Spinner) findViewById(R.id.SpinnerRegion);
final Spinner pokeType = (Spinner) findViewById(R.id.SpinnerType);
final ToggleButton incNFE = (ToggleButton) findViewById(R.id.toggleNFE);
final ToggleButton incLegendary = (ToggleButton) findViewById(R.id.toggleLegendary);
Button generateGo = (Button)findViewById(R.id.buttonGo);
generateGo.setOnClickListener(new View.OnClickListener(){
public void onClick(View view){
/**
* Begin setting the values from out input
*/
String mNumPoke = numPoke.getSelectedItem().toString();
String mDexRegion = dexRegion.getSelectedItem().toString();
String mPokeType = pokeType.getSelectedItem().toString();
if(incNFE.isChecked()){
String mNFE = "2";
} else {
String mNFE = "1";
}
if(incLegendary.isChecked()){
String mLegendary = "2";
} else {
String mLegendary = "1";
}
//end setting values from input
//this is the async task I'm trying to call
LoadPokemon generateThePokemon = new LoadPokemon();
generateThePokemon.execute();
}
});
//hashmap for list
pokemonList = new ArrayList<HashMap<String, String>>();
}
Fluue fucked around with this message at 02:57 on Jul 5, 2013
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Jul 4, 2013 23:49
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- Fluue
- Jan 2, 2008
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I'm having a lot of trouble getting a ListView working. I've tried using two different adapters (LazyAdapter and then a custom SimpleAdapter)
My app takes JSON data and then parses it into a listview (simple enough). But I'm also using the ImageLoader library from nostra13 ( https://github.com/nostra13/Android-Universal-Image-Loader ) to take a dynamically generated URL and download an image.
I'm getting NullPointerExceptions, and just now got this when using the custom SimpleAdapter:
code:07-27 18:56:22.321: ERROR/AndroidRuntime(28133): FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dsgunter.randompokemongenerator/
com.dsgunter.randompokemongenerator.Results}:
java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2132)
at android.app.ActivityThread.access$600(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1231)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5021)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.dsgunter.randompokemongenerator.Results.onCreate(Results.java:51)
at android.app.Activity.performCreate(Activity.java:5058)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
https://gist.github.com/verkaufer/985a7f4e0f145a729e0b (Results.Java)
https://gist.github.com/verkaufer/28ae68336f8b698affec (MyAdapter.java - the new adapter that generated the above error)
https://gist.github.com/verkaufer/63d9764dc80c2fa09d10 (LazyAdapter.java - old adapter that I was using but pokeman on line 72 always remained null)
Should I keep using my LazyAdapter? I tried the other one because I was stumped on why pokeman wasn't populating (even using breakpoints, it stayed null the entire time).
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Jul 28, 2013 01:05
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- Fluue
- Jan 2, 2008
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Whoops! I must have deleted that line when refactoring..
I'm still receiving the same error though. I tried a solution provided on StackOverflow (changing my activity name for Results.java to .Results in AndroidManifest.xml) but that still results in the same error and app crash. Is there a specific debug method I should look at to determine where things are going wrong?
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Jul 28, 2013 19:24
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- Fluue
- Jan 2, 2008
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My app is doing something odd with JSON parsing when adding my JSON items to an ArrayList<HashMap<String, String>>.
I'm getting a nullpointer exception (see below) when I look at my app's logcat, and I think it has something to do with this.
code:DEBUG/Pokemon Output:(2848): > [{"type2":"fire","type1":"dark","real_pokemon_id":"229","name":"Houndoom"}]
05-13 22:17:37.977: DEBUG/Pokemon Output post mapping:(2848): > [{type2=fire, real_pokemon_id=229,
sprite_url=actualurlhere, type1=dark, name=Houndoom}]
05-13 22:17:38.008: INFO/ActivityManager(702): START {flg=0x10000000 cmp=com.dsgunter.randompokemongenerator/.Results (has extras)
u=0}
from pid 2848
05-13 22:17:38.158: DEBUG/Pokemon Output After Intent Passing:(2848): > [{type2=fire, real_pokemon_id=229,
sprite_url=actualurlhere, type1=dark, name=Houndoom}]
05-13 22:17:38.188: ERROR/AndroidRuntime(2848): FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{/com.dsgunter.randompokemongenerator.Results}:
java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2132)
at android.app.ActivityThread.access$600(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1231)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5021)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.dsgunter.randompokemongenerator.Results.onCreate(Results.java:53)
at android.app.Activity.performCreate(Activity.java:5058)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
... 11 more
I'm puzzled where I'm getting a nullpointer when trying to start Results.java from an intent..
For my full code, see here: https://gist.github.com/verkaufer/ee6f244097d80e00fabb
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May 14, 2014 03:29
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- Fluue
- Jan 2, 2008
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In Results' onCreate method:
This isn't the resource ID for a ListView. It's not even a resource ID for a view at all, which is why it's returning null. That is why your list.setAdapter call is blowing up.
code:list = (ListView) findViewById(R.layout.list_generated_pokemon);
I have a custom adapter setup because I have a defined row layout (Therefore I have a listview and a row xml file)
I am using a (probably lovely) adapter called LazyAdapter from a tutorial site just so I can get a hang of using an adapter. If I got my resource IDs correct, the adapter should just take in ArrayList<HashMap<string, string>> right?
Relevant code, including my views: https://gist.github.com/verkaufer/578af362176847e29970
Googling for transferring an ArrayList<HashMap<>> data type into a ListView has been fruitless so far. If there's a tutorial I'm overlooking (and I've looked at Vogella), please direct me to it.
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May 14, 2014 19:53
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- Fluue
- Jan 2, 2008
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Here's how I setup a ListView for an app of mine (snipped for relevant parts):
Java code: ArrayAdapter<Spanned> adapter = null;
ArrayList<Spanned> spannedList = new ArrayList<Spanned>();
//snip
Quake q = new Quake(getIntent().getStringExtra("Quake" + i));
//snip loops and poo poo
//adapter = new ArrayAdapter<Quake>(this,
// android.R.layout.simple_list_item_1, quakeList);
spannedList.add(q.toSpanned());
adapter = new ArrayAdapter<Spanned>(this,
android.R.layout.simple_list_item_1, spannedList);
setListAdapter(adapter);
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May 14, 2014 21:55
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- Fluue
- Jan 2, 2008
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So my app got suspended from the market after submitting it. It's apparently because of Impersonation and Intellectual Property infringement (for Pokemon). When I look up "Pokemon" in the Play Store I get at least 20 other apps that use the Pokeball, the name, or a combination of both. I am definitely not trying to pass off my app as official.. so what's Google's beef?
Has anyone had success appealing an app suspension?
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May 17, 2014 21:23
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May 10, 2024 08:06
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- Fluue
- Jan 2, 2008
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What, exactly, does your app do?
It allows users to generate/display a team of 6 Pokémon. It's basically just an information app.. There are other Pokémon apps that have way more information and do more than mine. I'm not sure why it got banned.
It's basically an app implementation of this: http://wyncorporation.com/pokemon
Fluue fucked around with this message at 19:22 on May 18, 2014
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May 18, 2014 18:48
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Mar 4, 2013 16:57
