protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mTempBitmap != null) { canvas.drawBitmap(mTempBitmap, 0, 0, null); } }在这代码报错'onDraw(Canvas)' cannot override 'onDraw(Canvas)' in 'android.view.TextureView'; overridden method is finad要怎样修改

这个错误提示是因为你的类继承了TextureView，而TextureView已经有了一个名为onDraw(Canvas)的final方法，无法被重写。如果你需要在TextureView上绘制图形，可以使用SurfaceTexture来实现。

如果你想要在TextureView上绘制图形，可以在onSurfaceTextureAvailable回调中获取SurfaceTexture，并创建一个新的线程来绘制图形。具体实现可以参考以下代码：

public class MyTextureView extends TextureView implements TextureView.SurfaceTextureListener, Runnable {
    private SurfaceTexture mSurfaceTexture;
    private boolean mIsDrawing;

    public MyTextureView(Context context) {
        super(context);
        setSurfaceTextureListener(this);
    }

    @Override
    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
        mSurfaceTexture = surface;
        new Thread(this).start();
    }

    @Override
    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {

    }

    @Override
    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
        mSurfaceTexture = null;
        mIsDrawing = false;
        return true;
    }

    @Override
    public void onSurfaceTextureUpdated(SurfaceTexture surface) {

    }

    @Override
    public void run() {
        mIsDrawing = true;
        while (mIsDrawing) {
            Canvas canvas = mSurfaceTexture.lockCanvas(null);
            // 在canvas上绘制图形
            mSurfaceTexture.unlockCanvasAndPost(canvas);
        }
    }
}