Java.lang.nullpointer例外（フォント）

Question

は、だから私はそのような活性を有していると言うことができます：

public class display_score extends Activity implements OnClickListener { 

    Button back; 
    TextView txt1; 
    TextView txt2; 
    TextView txt3; 
    TextView txt4; 
    TextView txt5; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
           WindowManager.LayoutParams.FLAG_FULLSCREEN); 

     setContentView(R.layout.display_highscore); 


     back = (Button) findViewById(R.id.button1); 
     back.setOnClickListener(this); 



     txt1 = (TextView) findViewById(R.id.textView1); 
     txt2 = (TextView) findViewById(R.id.textView2); 
     txt3 = (TextView) findViewById(R.id.textView3); 
     txt4 = (TextView) findViewById(R.id.textView4); 
     txt5 = (TextView) findViewById(R.id.textView5); 



     txt1.setText("1. "+score.scores.getString("NAME","")+" "+String.valueOf(score.scores.getInt("SCORE",0))); 
     txt2.setText("2. "+score.scores.getString("NAME2","")+" "+String.valueOf(score.scores.getInt("SCORE2",0))); 
     txt3.setText("3. "+score.scores.getString("NAME3","")+" "+String.valueOf(score.scores.getInt("SCORE3",0))); 
     txt4.setText("4. "+score.scores.getString("NAME4","")+" "+String.valueOf(score.scores.getInt("SCORE4",0))); 
     txt5.setText("5. "+score.scores.getString("NAME5","")+" "+String.valueOf(score.scores.getInt("SCORE5",0))); 


     txt1.setTypeface(Typeface.createFromAsset(getAssets(),"game_over.ttf")); 
     txt2.setTypeface(Typeface.createFromAsset(getAssets(),"game_over.ttf")); 
     txt3.setTypeface(Typeface.createFromAsset(getAssets(),"game_over.ttf")); 
     txt4.setTypeface(Typeface.createFromAsset(getAssets(),"game_over.ttf")); 
     txt5.setTypeface(Typeface.createFromAsset(getAssets(),"game_over.ttf")); 

     txt1.setTextColor(Color.BLACK); 
     txt2.setTextColor(Color.BLACK); 
     txt3.setTextColor(Color.BLACK); 
     txt4.setTextColor(Color.BLACK); 
     txt5.setTextColor(Color.BLACK); 


    } 

    @Override 
    public void onClick(View v) { 
     finish(); 

    } 

    @Override 
    public void onBackPressed() { 
     super.onBackPressed(); 
     finish(); 
    } 




} 

、そのようなレイアウト：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:gravity="bottom" 
    android:orientation="vertical" 
    android:background="@drawable/background"> 


    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:text="1" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 


    <TextView 
     android:id="@+id/textView2" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:text="2" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 


    <TextView 
     android:id="@+id/textView3" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:text="3" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 


    <TextView 
     android:id="@+id/textView4" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:text="4" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 



    <TextView 
     android:id="@+id/textView5" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:text="5" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 


    <Button 
     android:id="@+id/button1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Back" /> 

</LinearLayout> 

その後、私はこの例外を取得：

04-24 22:02:43.101: E/AndroidRuntime(10956): FATAL EXCEPTION: main 
04-24 22:02:43.101: E/AndroidRuntime(10956): java.lang.RuntimeException: Unable to start activity ComponentInfo{run.alexander.fuchs/run.alexander.fuchs.display_score}: java.lang.NullPointerException 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.ActivityThread.access$600(ActivityThread.java:123) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.os.Looper.loop(Looper.java:137) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.ActivityThread.main(ActivityThread.java:4424) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at java.lang.reflect.Method.invokeNative(Native Method) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at java.lang.reflect.Method.invoke(Method.java:511) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at dalvik.system.NativeStart.main(Native Method) 
04-24 22:02:43.101: E/AndroidRuntime(10956): Caused by: java.lang.NullPointerException 
04-24 22:02:43.101: E/AndroidRuntime(10956): at run.alexander.fuchs.display_score.onCreate(display_score.java:48) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.Activity.performCreate(Activity.java:4465) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 
04-24 22:02:43.101: E/AndroidRuntime(10956): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 
04-24 22:02:43.101: E/AndroidRuntime(10956): ... 11 more 

フォントがそこにあるので、それは非常に奇妙です:(

共有優先順位でも動作するはずです！

Answer 1

あなたの例外スタックトレースはdisplay_score.java:48を指しますが、あなたのコードに含まれているパッケージとインポートステートメントはありませんが、どの行にあるかはわかりません。それは、このライン

txt1.setTypeface(Typeface.createFromAsset(getAssets(),"game_over.ttf")); 

なら、おそらくこのSOの質問は、それを解決するのに役立つかもしれない： set font at runtime, Textview。フォントファイルがasset/fontsディレクトリにない場合は、それらのファイルをassets/fontsディレクトリに置く必要があります。

Answer 2

私が見つけた、それはライン48で、どのライン