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Mon application Android ne semble pas commencer. J'ai fait quelques changements de code dans l'activité principale, j'ai essayé de le lancer et il s'est écrasé au lancement. J'ai ensuite supprimé ces modifications de code et il ne sera toujours pas lancé. Je ne trouve rien de mal avec le code, voici l'activité principale:Android App ne démarre pas, l'arrêt inattendu
public class MainActivity extends TabActivity implements OnClickListener {
Button doSomething;
TabHost tabHost;
ViewFlipper flipper;
ListView listview;
ListView listview2;
HttpResponse re;
String json;
JSONObject j;
ListAdapter adapter2;
/*==================*/
ListView lazyList;
LazyAdapter lazyAdapter;
/*==================*/
private static final String LOG_TAG = "App";
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
doSomething = (Button) findViewById(R.id.btn_do_something);
doSomething.setOnClickListener(this);
flipper = (ViewFlipper) findViewById(R.id.layout_tab_one);
listview = (ListView) findViewById(R.id.listview);
listview2 = (ListView) findViewById(R.id.listview2);
/*==================================*/
lazyList=(ListView)findViewById(R.id.lazylistview);
//@SuppressWarnings("unchecked")
ListAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,this.fetch());
adapter2 = new ArrayAdapter(this,android.R.layout.simple_list_item_1,this.fetchList1());
listview.setAdapter(adapter);
listview2.setAdapter(adapter2);
flipper.setOnClickListener(this);
String tabname1 = getString(R.string.tabexample_tab1);
String tabname2 = getString(R.string.tabexample_tab2);
String tabname3 = getString(R.string.tabexample_tab3);
String tabname4 = getString(R.string.tabexample_tab4);
tabHost = getTabHost();
tabHost.addTab(tabHost.newTabSpec("tab1").setContent(R.id.layout_tab_one).setIndicator(tabname1));
tabHost.addTab(tabHost.newTabSpec("tab2").setContent(R.id.layout_tab_two).setIndicator(tabname2));
tabHost.addTab(tabHost.newTabSpec("tab3").setContent(R.id.layout_tab_three).setIndicator(tabname3));
tabHost.addTab(tabHost.newTabSpec("tab4").setContent(R.id.layout_tab_four).setIndicator(tabname4));
tabHost.setCurrentTab(0);
listview.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
Object item = listview.getItemAtPosition(position);
SavePreferences("item",item.toString());
MainActivity.this.refreshList();
flipper.showNext();
}});
listview2.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
flipper.showPrevious();
}});
lazyList.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
flipper.showPrevious();
}});
}
public ArrayList<String> fetch()
{
ArrayList<String> listItems = new ArrayList<String>();
try {
URL twitter = new URL(
"JSON.php");
URLConnection tc = twitter.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
tc.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
//make sure youe String line is completely filled after that..
if (!line.equals(null) && !line.equals("") && line.startsWith("["))
{
JSONArray jArray = new JSONArray(line);
Log.v(LOG_TAG,"jarray value: " + jArray);
for (int i = 0;i < jArray.length(); i++)
{
//SONObject jobj = jArray.getJSONObject(i);
String country = jArray.getString(i);
listItems.add(country);
// also make sure you get the value from the jsonObject using some key
// like, jobj.getString("country");
//istItems.add(jobj.getString(""));
}
}
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listItems;
}
public ArrayList<String> fetchList1()
{
ArrayList<String> listItems = new ArrayList<String>();
try {
SharedPreferences sharedPreferences = getSharedPreferences("MY_SHARED_PREF", MODE_PRIVATE);
String selected = sharedPreferences.getString("item", "");
URL twitter = new URL(
"JSON2.php?item=" + selected);
URLConnection tc = twitter.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
tc.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
//make sure youe String line is completely filled after that..
if (!line.equals(null) && !line.equals("") && line.startsWith("["))
{
JSONArray jArray = new JSONArray(line);
// Log.v(LOG_TAG,"jarray value: " + jArray);
for (int i = 0;i < jArray.length(); i++)
{
//SONObject jobj = jArray.getJSONObject(i);
String country = jArray.getString(i);
listItems.add(country);
// also make sure you get the value from the jsonObject using some key
// like, jobj.getString("country");
//istItems.add(jobj.getString(""));
}
}
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listItems;
}
public ArrayList<String> fetchImages()
{
ArrayList<String> listItems = new ArrayList<String>();
try {
SharedPreferences sharedPreferences = getSharedPreferences("MY_SHARED_PREF", MODE_PRIVATE);
String selected = sharedPreferences.getString("item", "");
URL twitter = new URL(
"ImageJSON.php?item="+ selected);
Log.v(LOG_TAG,"URL**:" + twitter.toString());
URLConnection tc = twitter.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
tc.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
//make sure youe String line is completely filled after that..
if (!line.equals(null) && !line.equals("") && line.startsWith("["))
{
JSONArray jArray = new JSONArray(line);
// Log.v(LOG_TAG,"jarray value: " + jArray);
for (int i = 0;i < jArray.length(); i++)
{
//SONObject jobj = jArray.getJSONObject(i);
String country = jArray.getString(i);
listItems.add(country);
// also make sure you get the value from the jsonObject using some key
// like, jobj.getString("country");
//istItems.add(jobj.getString(""));
}
}
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listItems;
}
public ArrayList<String> fetchList2()
{
ArrayList<String> listItems = new ArrayList<String>();
try {
SharedPreferences sharedPreferences = getSharedPreferences("MY_SHARED_PREF", MODE_PRIVATE);
String selected = sharedPreferences.getString("item", "");
URL twitter = new URL(
"JSON3.php?item="+ selected);
URLConnection tc = twitter.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
tc.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
//make sure youe String line is completely filled after that..
if (!line.equals(null) && !line.equals("") && line.startsWith("["))
{
JSONArray jArray = new JSONArray(line);
// Log.v(LOG_TAG,"jarray value: " + jArray);
for (int i = 0;i < jArray.length(); i++)
{
//SONObject jobj = jArray.getJSONObject(i);
String country = jArray.getString(i);
listItems.add(country);
// also make sure you get the value from the jsonObject using some key
// like, jobj.getString("country");
//istItems.add(jobj.getString(""));
}
}
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return listItems;
}
public void refreshList() {
/*adapter2 = null;
adapter2 = new ArrayAdapter(this,android.R.layout.simple_list_item_1,this.fetchList1());
listview2.setAdapter(adapter2);*/
lazyAdapter = null;
String[] imagesList = new String[this.fetchList1().size()];
imagesList = this.fetchImages().toArray(imagesList);
ArrayList<String> v = this.fetchList1();
ArrayList<String> t = this.fetchList2();
lazyAdapter=new LazyAdapter(this,imagesList,v,t);
lazyList.setAdapter(lazyAdapter);
//adapter2.notifyDatasetChanged();
}
private void SavePreferences(String key, String value){
SharedPreferences sharedPreferences = getSharedPreferences("MY_SHARED_PREF", MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(key, value);
editor.commit();
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
public void onBackPressed()
{
flipper.showPrevious();
}
}
Voici le manifeste;
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="1"
android:versionName="1.0" package="com.myApp.android">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainActivity" 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=".MainActivity" />
<activity android:name=".LazyAdapter" />
<activity android:name=".ImageLoader" />
</application>
<uses-sdk android:minSdkVersion="3"/>
<uses-permission
android:name="android.permission.INTERNET" />
</manifest>
Log Output Cat:
08-28 11:16:32.442: ERROR/AndroidRuntime(517): FATAL EXCEPTION: main
08-28 11:16:32.442: ERROR/AndroidRuntime(517): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myApp.android/com.myApp.android.MainActivity}: java.lang.NullPointerException
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.ActivityThread.access$1500(ActivityThread.java:122)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.os.Handler.dispatchMessage(Handler.java:99)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.os.Looper.loop(Looper.java:132)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.ActivityThread.main(ActivityThread.java:4025)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at java.lang.reflect.Method.invokeNative(Native Method)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at java.lang.reflect.Method.invoke(Method.java:491)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at dalvik.system.NativeStart.main(Native Method)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): Caused by: java.lang.NullPointerException
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at com.android.MainActivity.onCreate(MainActivity.java:84)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
08-28 11:16:32.442: ERROR/AndroidRuntime(517): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712)
quelle ligne est "MainActivity.java 84"? – manelizzard
doSomething.setOnClickListener (this); – EI756