Android I/O 2014 데모 앱 문제

Question

google L 미리보기에서 제공하는 새로운 Shared Elements Animations API에 핸들을 작성하려고합니다. 나는 내 응용 프로그램 작동시킬 수없는 것 내 인생에 들어 https://developer.android.com/preview/material/animations.html

:

내가 함께 참조 점과 코드베이스를 사용하는 것을 시도하고있다. 그러나 Google에서 데모 응용 프로그램을 실행할 때 전환 작업이 정상적으로 작동합니다.

MyActivity.java :

public class MyActivity extends Activity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_my); 

     final ImageView imageView = (ImageView)this.findViewById(R.id.img_main); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.my, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

    public void showPhoto(View view) { 
     Intent intent = new Intent(); 
     intent.setClass(this, MyActivity2.class); 

     ImageView hero = (ImageView) ((View) view.getParent()).findViewById(R.id.img_main); 
     ((ViewGroup) hero.getParent()).setTransitionGroup(false); 

     ActivityOptions options = 
       ActivityOptions.makeSceneTransitionAnimation(this, hero, "robot"); 
     startActivity(intent, options.toBundle()); 
    } 
} 

activity_my.xml :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    tools:context=".MyActivity"> 

    <ImageView 
     android:id="@+id/img_main" 
     android:viewName="photo1" 
     android:layout_width="64dp" 
     android:layout_height="64dp" 
     android:src="@drawable/test" 
     android:onClick="showPhoto"/> 

</RelativeLayout> 

styles.xml :

<resources> 

    <!-- Base application theme. --> 
    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar"> 
     <item name="android:windowContentTransitions">true</item> 
     <item name="android:windowAllowEnterTransitionOverlap">true</item> 
     <item name="android:windowAllowExitTransitionOverlap">true</item> 
     <item name="android:windowActionBarOverlay">false</item> 
     <item name="android:windowContentOverlay">@null</item> 
    </style> 

</resources> 

manifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.jms_m_000.transitionshit" > 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name=".MyActivity" 
      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=".MyActivity2" 
      android:label="@string/title_activity_my_activity2" > 
     </activity> 
    </application> 

</manifest> 

오류 내가 받고 오전 :

07-06 18:54:42.153 24145-24145/com.example.jms_m_000.transitionshit 
E/AndroidRuntime﹕FATAL EXCEPTION: main 

    Process: com.example.jms_m_000.transitionshit, PID: 24145 
    java.lang.IllegalStateException: Could not execute method of the activity 
      at android.view.View$1.onClick(View.java:3970) 
      at android.view.View.performClick(View.java:4598) 
      at android.view.View$PerformClick.run(View.java:19268) 
      at android.os.Handler.handleCallback(Handler.java:738) 
      at android.os.Handler.dispatchMessage(Handler.java:95) 
      at android.os.Looper.loop(Looper.java:135) 
      at android.app.ActivityThread.main(ActivityThread.java:5070) 
      at java.lang.reflect.Method.invoke(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:372) 
      at rnal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:836) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:631) 
    Caused by: java.lang.reflect.InvocationTargetException 
      at java.lang.reflect.Method.invoke(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:372) 
      at android.view.View$1.onClick(View.java:3965) 
at android.view.View.performClick(View.java:4598) 
at android.view.View$PerformClick.run(View.java:19268) 
at android.os.Handler.handleCallback(Handler.java:738) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5070) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:836) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:631) 
    Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Bundle android.app.ActivityOptions.toBundle()' on a null object reference 
      at com.example.jms_m_000.transitionshit.MyActivity.showPhoto(MyActivity.java:56) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at android.view.View$1.onClick(View.java:3965) 
at android.view.View.performClick(View.java:4598) 
at android.view.View$PerformClick.run(View.java:19268) 
at android.os.Handler.handleCallback(Handler.java:738) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5070) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:836) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:631) 

임 확실하지 왜하지만 옵션은 ... .makeSceneTransitionAnimation()를 호출 한 후

어떤 생각 null의?

Answer 1

첫 번째 활동에서 '영웅'에게 setViewName()을 호출하여보기 이름을 정의하고 두 번째 활동에서 ImageView에 대한보기 이름 (makeSceneTransitionAnimation에서 정의 된 것과 동일)을 정의하십시오. 그 날

Answer 2

에 한번 당신의 활동에서 onCreate() 메소드에

requestFeature(Window.FEATURE_CONTENT_TRANSITIONS); 

를 추가하는 일입니다.

놀랍게도 나를 비효율적으로 만드는 옵션이 있습니다.