Die EditText-Klasse für Mono-Android wird erweitert.

Question

Ich versuche, die EditText-Klasse in Android Mono zu überschreiben. Hier ist was ich bisher Code weise habe. Unglücklicherweise stürzt es ab, wenn ich versuche, es auszuführen (es stürzt natürlich nicht ab, wenn ich stattdessen ein standardmäßiges EditText-Widget verwende).

namespace testing 
{ 
    public class SuperEditText : EditText 
    { 
     public SuperEditText(Context context) : base(context) 
     { 
     // Java has init() here - maybe that's an issue. If so, does C# have an equivalent? 
     } 
    } 
} 

Und hier ist der XML:

<SuperEditText 
    android:id="@+id/eta"  
    android:layout_height="wrap_content" 
    android:layout_width="fill_parent" 
    android:gravity="top" 
/> 

Irgendwelche Ideen?

** * ** * ** * *** EDIT FÜR DEBUG LOG:

04-13 17:44:13.743 D/AndroidRuntime( 476): 
04-13 17:44:13.743 D/AndroidRuntime( 476): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
04-13 17:44:13.743 D/AndroidRuntime( 476): CheckJNI is ON 
04-13 17:44:14.713 D/AndroidRuntime( 476): Calling main entry com.android.commands.pm.Pm 
04-13 17:44:14.773 I/ActivityManager( 79): Start proc com.android.defcontainer for service com.android.defcontainer/.DefaultContainerService: pid=484 uid=10003 gids={1015, 2001} 
04-13 17:44:15.373 D/dalvikvm( 484): GC_EXPLICIT freed 286K, 54% free 2568K/5511K, external 410K/517K, paused 94ms 
04-13 17:44:15.723 W/ActivityManager( 79): No content provider found for: 
04-13 17:44:15.763 W/ActivityManager( 79): No content provider found for: 
04-13 17:44:15.783 D/PackageParser( 79): Scanning package: /data/app/vmdl-636945189.tmp 
04-13 17:44:16.093 D/dalvikvm( 79): GC_CONCURRENT freed 502K, 43% free 4211K/7367K, external 710K/1222K, paused 9ms+11ms 
04-13 17:44:16.333 I/PackageManager( 79): Removing non-system package:HelloM4A.HelloM4A 
04-13 17:44:16.333 I/ActivityManager( 79): Force stopping package HelloM4A.HelloM4A uid=10036 
04-13 17:44:16.523 D/PackageManager( 79): Scanning package HelloM4A.HelloM4A 
04-13 17:44:16.523 I/PackageManager( 79): Package HelloM4A.HelloM4A codePath changed from /data/app/HelloM4A.HelloM4A-2.apk to /data/app/HelloM4A.HelloM4A-1.apk; Retaining data and using new 
04-13 17:44:16.523 I/PackageManager( 79): Unpacking native libraries for /data/app/HelloM4A.HelloM4A-1.apk 
04-13 17:44:16.593 D/installd( 35): DexInv: --- BEGIN '/data/app/HelloM4A.HelloM4A-1.apk' --- 
04-13 17:44:17.333 D/dalvikvm( 495): DexOpt: load 154ms, verify+opt 353ms 
04-13 17:44:17.353 D/installd( 35): DexInv: --- END '/data/app/HelloM4A.HelloM4A-1.apk' (success) --- 
04-13 17:44:17.363 W/PackageManager( 79): Code path for pkg : HelloM4A.HelloM4A changing from /data/app/HelloM4A.HelloM4A-2.apk to /data/app/HelloM4A.HelloM4A-1.apk 
04-13 17:44:17.363 W/PackageManager( 79): Resource path for pkg : HelloM4A.HelloM4A changing from /data/app/HelloM4A.HelloM4A-2.apk to /data/app/HelloM4A.HelloM4A-1.apk 
04-13 17:44:17.363 D/PackageManager( 79): Registered content provider: HelloM4A.HelloM4A.__mono_init__, className = mono.MonoRuntimeProvider, isSyncable = false 
04-13 17:44:17.363 D/PackageManager( 79): Providers: mono.MonoRuntimeProvider 
04-13 17:44:17.363 D/PackageManager( 79): Receivers: mono.android.Seppuku 
04-13 17:44:17.363 D/PackageManager( 79): Activities: hellom4a.Activity1 
04-13 17:44:17.373 I/ActivityManager( 79): Force stopping package HelloM4A.HelloM4A uid=10036 
04-13 17:44:17.543 I/installd( 35): move /data/dalvik-cache/data@app@HelloM4A.HelloM4A-1.apk@classes.dex -> /data/dalvik-cache/data@app@HelloM4A.HelloM4A-1.apk@classes.dex 
04-13 17:44:17.543 D/PackageManager( 79): New package installed in /data/app/HelloM4A.HelloM4A-1.apk 
04-13 17:44:17.713 I/ActivityManager( 79): Force stopping package HelloM4A.HelloM4A uid=10036 
04-13 17:44:17.833 D/dalvikvm( 164): GC_EXPLICIT freed 59K, 52% free 2906K/5959K, external 1221K/1532K, paused 100ms 
04-13 17:44:17.933 I/ActivityManager( 79): Start proc com.svox.pico for broadcast com.svox.pico/.VoiceDataInstallerReceiver: pid=496 uid=10009 gids={} 
04-13 17:44:17.993 W/RecognitionManagerService( 79): no available voice recognition services found 
04-13 17:44:18.783 I/ActivityThread( 496): Pub com.svox.pico.providers.SettingsProvider: com.svox.pico.providers.SettingsProvider 
04-13 17:44:18.853 D/dalvikvm( 79): GC_CONCURRENT freed 560K, 43% free 4255K/7431K, external 710K/1222K, paused 9ms+29ms 
04-13 17:44:19.103 D/dalvikvm( 295): GC_CONCURRENT freed 296K, 52% free 2738K/5703K, external 555K/1024K, paused 7ms+18ms 
04-13 17:44:19.153 D/dalvikvm( 79): GC_EXPLICIT freed 47K, 44% free 4209K/7431K, external 710K/1222K, paused 252ms 
04-13 17:44:19.493 I/installd( 35): unlink /data/dalvik-cache/data@app@HelloM4A.HelloM4A-2.apk@classes.dex 
04-13 17:44:19.513 D/AndroidRuntime( 476): Shutting down VM 
04-13 17:44:19.543 D/dalvikvm( 476): GC_CONCURRENT freed 100K, 72% free 293K/1024K, external 0K/0K, paused 2ms+2ms 
04-13 17:44:19.553 I/AndroidRuntime( 476): NOTE: attach of thread 'Binder Thread #3' failed 
04-13 17:44:19.553 D/jdwp ( 476): adbd disconnected 
04-13 17:44:20.513 D/AndroidRuntime( 509): 
04-13 17:44:20.513 D/AndroidRuntime( 509): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
04-13 17:44:20.513 D/AndroidRuntime( 509): CheckJNI is ON 
04-13 17:44:21.483 D/AndroidRuntime( 509): Calling main entry com.android.commands.am.Am 
04-13 17:44:21.553 I/ActivityManager( 79): Start proc HelloM4A.HelloM4A for broadcast HelloM4A.HelloM4A/mono.android.Seppuku: pid=517 uid=10036 gids={3003, 1015} 
04-13 17:44:21.893 I/ActivityThread( 517): Pub HelloM4A.HelloM4A.__mono_init__: mono.MonoRuntimeProvider 
04-13 17:44:21.913 D/dalvikvm( 517): Trying to load lib /data/data/HelloM4A.HelloM4A/lib/libmonodroid.so 0x405135d8 
04-13 17:44:21.913 D/dalvikvm( 517): Added shared lib /data/data/HelloM4A.HelloM4A/lib/libmonodroid.so 0x405135d8 
04-13 17:44:22.253 I/monodroid-gc( 517): environment supports jni NewWeakGlobalRef 
04-13 17:44:22.613 D/Zygote ( 33): Process 517 exited cleanly (255) 
04-13 17:44:22.613 I/ActivityManager( 79): Process HelloM4A.HelloM4A (pid 517) has died. 
04-13 17:44:22.623 D/AndroidRuntime( 509): Shutting down VM 
04-13 17:44:22.663 I/AndroidRuntime( 509): NOTE: attach of thread 'Binder Thread #3' failed 
04-13 17:44:22.663 D/dalvikvm( 509): GC_CONCURRENT freed 101K, 69% free 319K/1024K, external 0K/0K, paused 1ms+1ms 
04-13 17:44:22.663 D/jdwp ( 509): adbd disconnected 
04-13 17:44:23.563 D/AndroidRuntime( 531): 
04-13 17:44:23.563 D/AndroidRuntime( 531): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
04-13 17:44:23.563 D/AndroidRuntime( 531): CheckJNI is ON 
04-13 17:44:24.733 D/AndroidRuntime( 531): Calling main entry com.android.commands.am.Am 
04-13 17:44:24.793 I/ActivityManager( 79): Starting: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=HelloM4A.HelloM4A/hellom4a.Activity1 } from pid 531 
04-13 17:44:24.873 D/AndroidRuntime( 531): Shutting down VM 
04-13 17:44:24.903 I/AndroidRuntime( 531): NOTE: attach of thread 'Binder Thread #3' failed 
04-13 17:44:24.963 D/dalvikvm( 531): GC_CONCURRENT freed 100K, 69% free 318K/1024K, external 0K/0K, paused 2ms+2ms 
04-13 17:44:24.963 D/jdwp ( 531): adbd disconnected 
04-13 17:44:25.003 I/ActivityManager( 79): Start proc HelloM4A.HelloM4A for activity HelloM4A.HelloM4A/hellom4a.Activity1: pid=540 uid=10036 gids={3003, 1015} 
04-13 17:44:25.743 I/ActivityThread( 540): Pub HelloM4A.HelloM4A.__mono_init__: mono.MonoRuntimeProvider 
04-13 17:44:25.853 D/dalvikvm( 540): Trying to load lib /data/data/HelloM4A.HelloM4A/lib/libmonodroid.so 0x40513a08 
04-13 17:44:25.853 D/dalvikvm( 540): Added shared lib /data/data/HelloM4A.HelloM4A/lib/libmonodroid.so 0x40513a08 
04-13 17:44:26.233 I/monodroid-gc( 540): environment supports jni NewWeakGlobalRef 
04-13 17:44:30.233 I/MonoDroid( 540): UNHANDLED EXCEPTION: Android.Views.InflateException: Exception of type 'Android.Views.InflateException' was thrown. 
04-13 17:44:30.283 E/mono ( 540): 
04-13 17:44:30.283 E/mono ( 540): Unhandled Exception: Android.Views.InflateException: Exception of type 'Android.Views.InflateException' was thrown. 
04-13 17:44:30.343 D/Zygote ( 33): Process 540 exited cleanly (1) 
04-13 17:44:30.343 I/ActivityManager( 79): Process HelloM4A.HelloM4A (pid 540) has died. 
04-13 17:44:30.492 W/InputManagerService( 79): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@40676960 
04-13 17:44:35.733 D/dalvikvm( 295): GC_EXPLICIT freed 57K, 53% free 2723K/5703K, external 555K/1024K, paused 86ms 

Answer 1

Sie müssen den Namen des Elements mit dem Java-Präfix Version des Namespaces, in dem es sich befindet. Wenn Ihr Namespace z. B. testing lautet, sollte die XML wie folgt aussehen:

<testing.SuperEditText 
    android:id="@+id/eta"  
    android:layout_height="wrap_content" 
    android:layout_width="fill_parent" 
    android:gravity="top" /> 

Weitere Details zum Suchen/Einstellen Ihres Java-Namensraums finden Sie unter this answer.

EDIT

reproduziert ich dies vor Ort, um die Ausnahme zu erhalten, die endete als:

System.NotSupportedException: Unable to find a constructor with signature (Android.Content.Context, Android.Util.IAttributeSet) on type MonoAndroidApplication23.SuperEditText. Please provide the missing constructor.

Sie können dieses Problem beheben, indem Sie Ihre Konstruktor Aktualisierung wie folgt aussehen:

public SuperEditText(Context context, IAttributeSet attrs) 
    : base(context, attrs) 
{ 
}