Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android

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重写surfaceView时出现异常

Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]

出错的代码块如下：

public ProgressView(Context context) {        super(context);        this.setFocusable(true);        this.setFocusableInTouchMode(true);        holder = this.getHolder();        holder.addCallback(this);        paint1 = new Paint();        paint1.setColor(Color.RED);        paint2 = new Paint();        paint2.setColor(Color.GRAY);        Bitmap bitmap1 = BitmapFactory.decodeStream(context.getResources()                .openRawResource(R.drawable.ic_launcher));        bitmap = bitmap1.extractAlpha();// 获取一个透明图片        y = bitmap.getWidth();//初始化y轴坐标    }

解决方案：

<span style="font-size:18px;">public ProgressView(Context context,<span style="color:#ff0000;">AttributeSet attrs</span>) {        super(context<span style="color:#ff0000;">,attrs</span>);        this.setFocusable(true);        this.setFocusableInTouchMode(true);        holder = this.getHolder();        holder.addCallback(this);        paint1 = new Paint();        paint1.setColor(Color.RED);        paint2 = new Paint();        paint2.setColor(Color.GRAY);        Bitmap bitmap1 = BitmapFactory.decodeStream(context.getResources()                .openRawResource(R.drawable.ic_launcher));        bitmap = bitmap1.extractAlpha();// 获取一个透明图片        y = bitmap.getWidth();//初始化y轴坐标    }</span>

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