problema codice che su kitkat funziona su lollipop no
Salve amici
sto progettando un'app android e ora ho implementato una porzione di codice presa da:
Retrieving a List of Contacts | Android Developers
ho preso il codice che c'č qui
finche lo uso su kitkat nella mia activity lancio un intent che richiama quel codice perso da developer.android e mi esegue una rubrica telefonica...
Essendo perņ che io sto usando il material design e appcompat-V7 e quella porzione di codice usa i fragment ho questo problema:
in kitkat si visualizza tutto correttamente e funziona, su lollipop facendo debug da android studio si riesce a vedere che scattauna nullpointer exception e la da su questa riga in ContactDetailActivity
codice:
if (Utils.hasHoneycomb()) {
// Enables action bar "up" navigation
getActionBar().setDisplayHomeAsUpEnabled(true);
//((ActionBarActivity))getActivity()).getSupportActionBar();
}
infatti lanciando l'app su lollipop non vedo le barre di menu in alto.
il mio mainfest č questo:
codice:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="todonotes.com.todonotes_buildfinale">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/Theme.AppCompat.NoActionBar">
<activity android:name="todonotes.com.todonotes_buildfinale.SplashScreen"
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="todonotes.com.todonotes_buildfinale.LoginActivity" android:theme="@style/AppTheme.Dark"
android:label="@string/app_name">
<intent-filter>
<action android:name="todonotes.com.todonotes_buildfinale.SIGNUPACTIVITY"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="todonotes.com.todonotes_buildfinale.ContactsListActivity" android:theme="@style/AppTheme"
android:label="@string/activity_contacts_list"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<!-- Add intent-filter for search intent action and specify searchable configuration
via meta-data tag. This allows this activity to receive search intents via the
system hooks. In this sample this is only used on older OS versions (pre-Honeycomb)
via the activity search dialog. See the Search API guide for more information:
http://developer.android.com/guide/topics/search/search-dialog.html -->
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable_contacts" />
</activity>
<activity
android:name="todonotes.com.todonotes_buildfinale.ContactDetailActivity" android:theme="@style/AppTheme"
android:label="@string/activity_contact_detail"
android:parentActivityName="todonotes.com.todonotes_buildfinale.ContactDetailActivity">
<!-- Define hierarchical parent of this activity, both via the system
parentActivityName attribute (added in API Level 16) and via meta-data annotation.
This allows use of the support library NavUtils class in a way that works over
all Android versions. See the "Tasks and Back Stack" guide for more information:
http://developer.android.com/guide/components/tasks-and-back-stack.html
-->
<meta-data android:name="android.support.PARENT_ACTIVITY"
android:value="todonotes.com.todonotes_buildfinale.ContactDetailActivity" />
</activity>
<activity android:name="todonotes.com.todonotes_buildfinale.SignupActivity" android:theme="@style/AppTheme.Dark"></activity>
<activity android:name="todonotes.com.todonotes_buildfinale.ConfirmActivity" android:theme="@style/AppTheme.Dark"></activity>
<activity android:name="todonotes.com.todonotes_buildfinale.ListNoteActivity" android:theme="@style/AppTheme.Dark"></activity>
</application>
</manifest>
spero possiate aiutarmi