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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。
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