setCameraZoomRatio method Null safety
- double value
Set the zoom factor (focal length) of camera
Note: this API supports only the Android and iOS platforms
The value range is 1–5. 1 indicates the furthest view (normal lens), and 5 indicates the nearest view (enlarging lens). We recommend you set the maximum value to 5. If the maximum value is greater than 5, the video will become blurry.
Parameters:
value Value range: 1–5. The greater the value, the further the focal length
Returned value. 0: success; negative number: failure
Implementation
Future<int?> setCameraZoomRatio(double value // Value range: 1–5. The greater the value, the further the focal length
) {
return _channel.invokeMethod('setCameraZoomRatio', {
"value": value.toString(),
});
}