关于flutter:flutter截图方案

截图分两种：

1.原生能力截图

1、原生能力截图分为Android和iOS，
Android不能间接截取蕴含flutter和原生界面的截图，只能独自截取flutter或者原生界面

//android截Native界面外围代码Window window = this.activity.getWindow();View view = this.activity.getWindow().getDecorView().getRootView();view.setDrawingCacheEnabled(true);Bitmap bitmap = Bitmap.createBitmap(    view.getWidth(),    view.getHeight(),    Bitmap.Config.ARGB_8888); // Bitmap()Canvas canvas = new Canvas(bitmap);view.draw(canvas);

//Android截flutter界面外围代码View view = this.activity.getWindow().getDecorView().getRootView();view.setDrawingCacheEnabled(true);Bitmap bitmap = null;if (this.renderer.getClass() == FlutterView.class) {    bitmap = ((FlutterView) this.renderer).getBitmap();} else if(this.renderer.getClass() == FlutterRenderer.class ) {    bitmap = ( (FlutterRenderer) this.renderer ).getBitmap();}if(bitmap == null) {    Log.println(Log.INFO, TAG, "The bitmap cannot be created :(");    return ;}view.setDrawingCacheEnabled(false);

iOS能够间接截取蕴含flutter和原生界面的截图。

// iOS截图外围代码  func takeScreenshot(view: UIView, toImageGallery :Bool = true) {        let scale :CGFloat = UIScreen.main.scale        UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.isOpaque, scale)        view.drawHierarchy(in: view.bounds, afterScreenUpdates: true)        let optionalImage :UIImage? = UIGraphicsGetImageFromCurrentImageContext()        UIGraphicsEndImageContext()}

非凡状况：
Android须要截取含有flutter与Native的界面，能够别离独自截取flutter界面和Native界面，获取到两个bitmap，而后做一个bitmap合并，最终失去flutter与native界面的截图

2.flutter能力截图

2、flutter能力截图能够应用screenshot库来截取。