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5 초 후에 표시되는 스플래시 스크린을 빌드 한 후 내 주요 활동으로 이동합니다. 이 스플래시 화면에는 앱이 처음 열리는 지 확인하는 boolen이 있습니다. 그렇다면 데이터베이스에 항목이 저장됩니다. 하지만 정확히이 시점에서 NullPointerException이 발생합니다.스플래시 스크린의 Nullpointer 예외 드로어 블 액세스시
왜 작동하지 않는 지 알 수 없습니다. 내 눈에는 그것이 있어야한다. 또한 오류가없는 데모 응용 프로그램에서 코드를 테스트했기 때문에 실제로 이상합니다. 그래서 여기
내 SplashScreenActivity.java 아마
package de.retowaelchli.filterit;
import org.apache.http.util.ByteArrayBuffer;
import android.app.Activity;
import android.content.ContextWrapper;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.widget.ImageView;
import de.retowaelchli.filterit.database.DBAdapter;
import de.retowaelchli.filterit.database.SmileyDBAdapter;
public class SplashScreenActivity extends Activity {
//Variablen definieren
public static final String KEY_APP_IS_INITIALIZED = "APP_INITIALIZED";
public SmileyDBAdapter mDbHelper;
private DBAdapter db;
ImageView iv;
ContextWrapper context;
ByteArrayBuffer baf;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
//Datenbank filling
db = new DBAdapter(this);
db.open();
db.close();
mDbHelper = new SmileyDBAdapter(this);
startupcheck();
//Splash-Screen Animation
Thread splashThread = new Thread() {
@Override
public void run() {
try {
int waited = 0;
while (waited < 5000) {
sleep(100);
waited += 100;
}
}
catch (InterruptedException e) {
// do nothing
}
finally {
finish();
Intent i = new Intent();
i.setClassName("de.retowaelchli.filterit",
"de.retowaelchli.filterit.StartseiteActivity");
startActivity(i);
}
}
};
splashThread.start();
}
//Hier wird getestet ob das App bereits die Datenbankeinträge besitzt
private void startupcheck(){
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(SplashScreenActivity.this);
boolean appIsInitialized = prefs.getBoolean(KEY_APP_IS_INITIALIZED, false);
if (appIsInitialized == false){
//Hier werden die Smiley gefüllt
devil(); <--THIS IS GIVING ME A NULLPOINTEREXCEPTION
//Hier wird eingetragen das die Datenbank gefüllt wurde
Editor editor = prefs.edit();
editor.putBoolean(KEY_APP_IS_INITIALIZED, true);
editor.commit();
}
}
/** Hier sind alle Datenbank Einträge definiert**/
private void devil(){
int drawableID = context.getResources().getIdentifier("devil", "drawable", getPackageName());
iv.setImageResource(drawableID);
String info = String.valueOf(drawableID);
mDbHelper.open();
mDbHelper.createSmiley("You received a satanic message", info);
mDbHelper.close();
}
}
의 코드입니다 ....이로드되지 않도록 당김을 할 수있는 뭔가가하지만로드되지는 왜 안 이미지 수
사전에 도움을09-30 10:44:04.808: INFO/ActivityManager(1760): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=de.retowaelchli.filterit/.SplashScreenActivity } from pid 3193
09-30 10:44:04.838: VERBOSE/HtcAppUsageStats(1760): (launch app, package): (Filter It, de.retowaelchli.filterit)
09-30 10:44:04.858: INFO/ActivityManager(1760): Start proc de.retowaelchli.filterit for activity de.retowaelchli.filterit/.SplashScreenActivity: pid=9074 uid=10150 gids={}
09-30 10:44:04.868: INFO/SuperPowerSvc(16326): [SuperPowerSvc] App launched: [de.retowaelchli.filterit]
09-30 10:44:04.918: ERROR/jdwp(9074): Failed sending reply to debugger: Broken pipe
09-30 10:44:04.918: DEBUG/dalvikvm(9074): Debugger has detached; object registry had 1 entries
09-30 10:44:05.038: VERBOSE/levels(6925): ::Bundle[{icon-small=17302166, present=true, scale=100, level=75, technology=Li-ion, status=3, voltage=3965, plugged=2, health=2, temperature=270}]
09-30 10:44:05.548: DEBUG/Database(9074): dbopen(): path = /data/data/de.retowaelchli.filterit/databases/filterit, flag = 6
09-30 10:44:05.548: DEBUG/Database(9074): dbopen(): path = /data/data/de.retowaelchli.filterit/databases/filterit, free size = 689
09-30 10:44:05.578: DEBUG/AndroidRuntime(9074): Shutting down VM
09-30 10:44:05.578: WARN/dalvikvm(9074): threadid=1: thread exiting with uncaught exception (group=0x4001d5a0)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): FATAL EXCEPTION: main
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): java.lang.RuntimeException: Unable to start activity ComponentInfo{de.retowaelchli.filterit/de.retowaelchli.filterit.SplashScreenActivity}: java.lang.NullPointerException
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1816)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1837)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.ActivityThread.access$1500(ActivityThread.java:132)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1033)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.os.Handler.dispatchMessage(Handler.java:99)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.os.Looper.loop(Looper.java:143)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.ActivityThread.main(ActivityThread.java:4196)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at java.lang.reflect.Method.invokeNative(Native Method)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at java.lang.reflect.Method.invoke(Method.java:507)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at dalvik.system.NativeStart.main(Native Method)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): Caused by: java.lang.NullPointerException
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at de.retowaelchli.filterit.SplashScreenActivity.devil(SplashScreenActivity.java:109)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at de.retowaelchli.filterit.SplashScreenActivity.startupcheck(SplashScreenActivity.java:76)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at de.retowaelchli.filterit.SplashScreenActivity.onCreate(SplashScreenActivity.java:40)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1780)
09-30 10:44:05.628: ERROR/AndroidRuntime(9074): ... 11 more
09-30 10:44:05.628: WARN/ActivityManager(1760): Force finishing activity de.retowaelchli.filterit/.SplashScreenActivity
09-30 10:44:06.128: WARN/ActivityManager(1760): Activity pause timeout for HistoryRecord{40a95900 de.retowaelchli.filterit/.SplashScreenActivity}
09-30 10:44:06.228: WARN/ResourceType(1760): Skipping entry 0x7f040005 in package table 0 because it is not complex!
들으 :
그래서 여기 내 로그 캣입니다!
null.setImageResource(drawableID);처럼 whiciv.setImageResource(drawableID);을 말했기 때문에! – safari바보 같은 질문을 한 번도하지 않습니다. 당신은 그 중 하나가 아닙니다. :) –