TextureView.getSurfaceTexture()返回null

textureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
    @Override
    public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) {
        // SurfaceTexture已经准备好，可以进行渲染操作
        SurfaceTexture texture = textureView.getSurfaceTexture();
        // 进行后续操作
    }

    @Override
    public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int width, int height) {
        // SurfaceTexture的大小发生变化
    }

    @Override
    public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
        // SurfaceTexture被销毁
        return true;
    }

    @Override
    public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
        // SurfaceTexture更新
    }
});