0

背景と動く雲で構成されるビューを、ボタンとチェックボックスを持つレイアウトに追加しようとしています。getLayoutInflater で両方をマージしようとしましたが、強制的に閉じられました。MainActivity コードは次のとおりです。

public class MainActivity extends Activity{

MyCloud myView;
float x, y;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    myView = new MyCloud(this);
    getWindow().setFormat(PixelFormat.RGBA_8888);
    setContentView(myView);


    View view = getLayoutInflater().inflate(R.layout.activity_main, null, false);

    this.addContentView(view, null);
}
}

表示アクティビティは次のとおりです。

public class MyCloud extends View{

Bitmap cloud;
int ChangingX;
int ChangingY;
int x, y;

BitmapFactory.Options options;
Bitmap preparedBitmap;

public MyCloud(Context context) {
    // TODO Auto-generated constructor stub
    super(context);

    setFocusable(true);

    options = new BitmapFactory.Options();
    options.inPreferredConfig = Bitmap.Config.ARGB_8888;
    options.inDither = true;
    options.inScaled = false;
    options.inDither = false;
    options.inPurgeable = true;
    preparedBitmap = BitmapFactory.decodeResource(getResources(),
            R.drawable.bg, options);
    Log.d("bitmap", String.valueOf(preparedBitmap));

    cloud = BitmapFactory.decodeResource(getResources(), R.drawable.cloud);

    ChangingX = 50;
    ChangingY = 50;
    x = 0;
    y = 0;
}

@Override
protected void onDraw(Canvas canvas) {
    // TODO Auto-generated method stub
    super.onDraw(canvas);
    canvas.drawBitmap(preparedBitmap, 0, 0, null); // for background
    canvas.drawBitmap(cloud, ChangingX , 50, null); // for cloud 
    if (ChangingX < canvas.getWidth())
        ChangingX += 2;
    else
        ChangingX = 50;

    invalidate();

}

}

レイアウトコード:

<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:background="@drawable/bg"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentRight="true"
    android:layout_marginBottom="170dp"
    android:layout_marginRight="58dp"
    android:text="Button" />

<CheckBox
    android:id="@+id/checkBox1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/button1"
    android:layout_alignBottom="@+id/button1"
    android:layout_alignParentLeft="true"
    android:layout_marginLeft="27dp"
    android:text="CheckBox" />

 </RelativeLayout>

私が持っているエラー:

06-15 12:34:20.801: E/AndroidRuntime(528): FATAL EXCEPTION: main
06-15 12:34:20.801: E/AndroidRuntime(528): 
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.cloud/com.cloud.MainActivity}: java.lang.NullPointerException
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.ActivityThread.access$2300(ActivityThread.java:125)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.os.Handler.dispatchMessage(Handler.java:99)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.os.Looper.loop(Looper.java:123)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.ActivityThread.main(ActivityThread.java:4627)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at java.lang.reflect.Method.invokeNative(Native Method)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at java.lang.reflect.Method.invoke(Method.java:521)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at dalvik.system.NativeStart.main(Native Method)
06-15 12:34:20.801: E/AndroidRuntime(528): Caused by: java.lang.NullPointerException
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.view.ViewGroup$LayoutParams.<init>(ViewGroup.java:3573)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:3723)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.widget.FrameLayout$LayoutParams.<init>(FrameLayout.java:487)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at    android.widget.FrameLayout.generateLayoutParams(FrameLayout.java:431)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.view.ViewGroup.addViewInner(ViewGroup.java:1975)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.view.ViewGroup.addView(ViewGroup.java:1865)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.view.ViewGroup.addView(ViewGroup.java:1845)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at com.android.internal.policy.impl.PhoneWindow.addContentView(PhoneWindow.java:229)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.Activity.addContentView(Activity.java:1681)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at com.cloud.MainActivity.onCreate(MainActivity.java:35)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-15 12:34:20.801: E/AndroidRuntime(528):  
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
06-15 12:34:20.801: E/AndroidRuntime(528):  ... 11 more

今まで getLayoutInflater を使用したことがないので、この問題を解決する方法や、ビューをレイアウトに追加する別の方法があるかどうか、コードで教えてください。前もって感謝します

4

1 に答える 1