보이는 이유없이 앱이 다운 됨

Question

다음은 코드입니다. 나는 다른 활동을 만들었습니다 StartActivity.java 버튼을 클릭하면 다음과 같은 오류가 나타납니다. "불행히도 테스트가 중단되었습니다".

MainActivity.java

public class MainActivity extends Activity { 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    final Button button = (Button)findViewById(R.id.changeButton); 
    button.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      Intent intents = new Intent (v.getContext(), StartActivity.class); 
       startActivity(intents); 
     } 
    }); 
} 
} 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:gravity="top" 
android:orientation="horizontal" > 

<RelativeLayout 
    android:id="@+id/relativeLayout1" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:background="#00FFFF"> 

    <ImageView 
     android:id="@+id/ImgSinger" 
     android:layout_width="50dp" 
     android:layout_height="50dp" 
     android:layout_alignBottom="@+id/TxtSinger" 
     android:baselineAlignBottom="true" 
     android:maxHeight="10dp" 
     android:maxWidth="10dp" 
     android:src="@drawable/taylor" /> 

    <TextView 
     android:id="@+id/TxtTitle" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginLeft="10dp" 
     android:layout_toRightOf="@+id/ImgSinger" 
     android:text="You Belong With Me" 
     android:textSize="16sp" /> 

    <TextView 
     android:id="@+id/TxtSinger" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_below="@+id/TxtTitle" 
     android:layout_marginLeft="10dp" 
     android:layout_marginTop="5dp" 
     android:layout_toRightOf="@+id/ImgSinger" 
     android:text="Taylor Swift" 
     android:textSize="12sp" /> 

    <TextView 
     android:id="@+id/TxtTime" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginLeft="30dp" 
     android:layout_toRightOf="@+id/TxtTitle" 
     android:text="4:30" 
     android:textSize="12sp" /> 
</RelativeLayout> 

<Button 
    android:id="@+id/changeButton" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentBottom="true" 
    android:layout_centerHorizontal="true" 
    android:text="Test" /> 

</RelativeLayout> 

의 AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.testandroid" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="17" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.testandroid.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=".StartActicity"></activity> 
    <activity android:name=".PlayActivity"></activity> 
</application> 

</manifest> 

---

모두 감사합니다, 나는 시도했지만 그 작동하지 않습니다. 도와주세요! 내가 로그 캣에서 버튼과 오류를 클릭하면 :

08-20 06:42:43.815: E/AndroidRuntime(862): FATAL EXCEPTION: main 
08-20 06:42:43.815: E/AndroidRuntime(862): android.content.ActivityNotFoundException: 
Unable to find explicit activity class 
{com.example.testandroid/com.example.testandroid.StartActivity}; have you declared this 
activity in your AndroidManifest.xml? 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.Instrumentation.execStartActivity(Instrumentation.java:1424) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.Activity.startActivityForResult(Activity.java:3390) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.Activity.startActivityForResult(Activity.java:3351) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.Activity.startActivity(Activity.java:3587) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.Activity.startActivity(Activity.java:3555) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
com.example.testandroid.MainActivity$1.onClick(MainActivity.java:20) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.view.View.performClick(View.java:4240) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.view.View$PerformClick.run(View.java:17721) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.os.Handler.handleCallback(Handler.java:730) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.os.Handler.dispatchMessage(Handler.java:92) 
08-20 06:42:43.815: E/AndroidRuntime(862): at android.os.Looper.loop(Looper.java:137) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
android.app.ActivityThread.main(ActivityThread.java:5103) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
java.lang.reflect.Method.invokeNative(Native Method) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
java.lang.reflect.Method.invoke(Method.java:525) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
08-20 06:42:43.815: E/AndroidRuntime(862): at 
dalvik.system.NativeStart.main(Native Method) 

Answer 1

이 시도 :

public void onClick(View v) { 
      Intent intents = new Intent (MainActivity.this, StartActivity.class); 
       startActivity(intents); 
     } 

및 제거하려고합니다. 활동에서. 같은

:

이

<Activity 

     android:name="yourpakagename.activityname"> // like com.android.mainactivity 
</Activity>