React native 反应本机视图快照曲面gl反应本机
请注意,我正在尝试快照动态添加的曲面和文本的viewshot视图,但在导出图像时无法看到文本React native 反应本机视图快照曲面gl反应本机,react-native,opengl,React Native,Opengl,请注意,我正在尝试快照动态添加的曲面和文本的viewshot视图,但在导出图像时无法看到文本 <Viewshot> <Surface style={{ width:Dimensions.get('screen').width, height:Dimensions.get('screen').height, zIndex: 0 }} ref={(el) => this.surface = el}> <Hudson><GLIma
<Viewshot>
<Surface style={{ width:Dimensions.get('screen').width, height:Dimensions.get('screen').height, zIndex: 0 }} ref={(el) => this.surface = el}>
<Hudson><GLImage source={{ uri: this.state.preview.uri }} resizeMode={'cover'}></Hudson>
</Surface>
<Draggable style={{}} x={0} z={0} minX={0} maxX={Dimensions.get('window').width} y={Dimensions.get('window').height / 3}>
<PinchGestureHandler {...gesture}>
<Animated.View style={[{ width: Dimensions.get('window').width, height: 'auto', backgroundColor: 'rgba(0, 0, 0, 0.1)', paddingHorizontal: 20, textAlign: 'center', paddingVertical: 10, saving: false }, { transform: [{ scale }] }]}>
<Text style={{ color: '#FFF', fontFamily: 'Nunito-Bold', fontSize: 16 }}>{text}</Text>
</Animated.View>
</PinchGestureHandler>
</Draggable>
</ViewShot>
this.surface=el}>
{text}
回答这类问题时更容易获得更多信息,如:
- 本机视图快照的版本
- 您为之开发的平台
//源代码取自:https://stackoverflow.com/questions/4731589/android-opengl-screenshot
公共静态位图保存像素(整数x、整数y、整数w、整数h、GL10 gl)
{
int b[]=新int[w*(y+h)];
int bt[]=新的int[w*h];
IntBuffer ib=IntBuffer.wrap(b);
ib.位置(0);
gl.glReadPixels(x,0,w,y+h,GL10.gl_RGBA,GL10.gl_无符号字节,ib);
对于(inti=0,k=0;i16)&0xff;
int pr=(非常感谢你,是的,我是为android开发的,我使用的是react native 0.62
// source taken from: https://stackoverflow.com/questions/4731589/android-opengl-screenshot
public static Bitmap SavePixels(int x, int y, int w, int h, GL10 gl)
{
int b[]=new int[w*(y+h)];
int bt[]=new int[w*h];
IntBuffer ib=IntBuffer.wrap(b);
ib.position(0);
gl.glReadPixels(x, 0, w, y+h, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, ib);
for(int i=0, k=0; i<h; i++, k++)
{//remember, that OpenGL bitmap is incompatible with Android bitmap
//and so, some correction need.
for(int j=0; j<w; j++)
{
int pix=b[i*w+j];
int pb=(pix>>16)&0xff;
int pr=(pix<<16)&0x00ff0000;
int pix1=(pix&0xff00ff00) | pr | pb;
bt[(h-k-1)*w+j]=pix1;
}
}
Bitmap sb=Bitmap.createBitmap(bt, w, h, Bitmap.Config.ARGB_8888);
return sb;
}