在百度上建网站,做网站配置服务器,北京欢迎您网站建设,井冈山保育院网站建设效果#xff1a;
可以直接引用#xff1a;disable_screenshots: ^0.2.0 但是有时候直接引用会报错#xff0c;可以不引用插件直接把下面的源码工具类放在项目里面 工具类源码#xff1a; import dart:io;
import dart:math;import package:flutter/cupertino.dart;
impor…效果
可以直接引用disable_screenshots: ^0.2.0 但是有时候直接引用会报错可以不引用插件直接把下面的源码工具类放在项目里面 工具类源码 import dart:io;
import dart:math;import package:flutter/cupertino.dart;
import package:flutter/services.dart;class DisableScreenshots {DisableScreenshots.private(this._methodChannel, this._eventChannel);static DisableScreenshots? _instance/* DisableScreenshots.private()*/;factory DisableScreenshots() {if (_instance null) {final MethodChannel methodChannel const MethodChannel(com.devlxx.DisableScreenshots/disableScreenshots);final EventChannel eventChannel const EventChannel(com.devlxx.DisableScreenshots/observer);_instance DisableScreenshots.private(methodChannel, eventChannel);}return _instance!;}final MethodChannel _methodChannel;final EventChannel _eventChannel;Streamvoid? _onScreenShotsnull;OverlayEntry? _overlayEntry;void addWatermark(BuildContext context, String watermark,{int rowCount 3, int columnCount 10, TextStyle? textStyle}) async {if (_overlayEntry ! null) {_overlayEntry!.remove();}OverlayState? overlayState Overlay.of(context);_overlayEntry OverlayEntry(builder: (context) DisableScreenshotsWatarmark(rowCount: rowCount,columnCount: columnCount,text: watermark,textStyle: textStyle ??const TextStyle(color: Color(0x08000000),fontSize: 18,decoration: TextDecoration.none),));overlayState?.insert(_overlayEntry!);// return await _methodChannel.invokeMethodvoid(addWatermark, [我是水印]);}void addCustomWatermark(BuildContext context, Widget widget) {if (_overlayEntry ! null) {_overlayEntry!.remove();}OverlayState? overlayState Overlay.of(context);_overlayEntry OverlayEntry(builder: (context) widget);overlayState?.insert(_overlayEntry!);}void removeWatermark() async {if (_overlayEntry ! null) {_overlayEntry!.remove();_overlayEntry null;}}Streamvoid get onScreenShots {if (_onScreenShots null) {_onScreenShots _eventChannel.receiveBroadcastStream();}return _onScreenShots!;}/// 只支持安卓Futurevoid disableScreenshots(bool disable) async {if (Platform.isAndroid) {return await _methodChannel.invokeMethod(disableScreenshots, {disable: disable});} else {print(仅Android平台支持禁用屏幕截图);}}
}class DisableScreenshotsWatarmark extends StatelessWidget {final int rowCount;final int columnCount;final String text;final TextStyle textStyle;const DisableScreenshotsWatarmark({Key? key,required this.rowCount,required this.columnCount,required this.text,required this.textStyle,}) : super(key: key);overrideWidget build(BuildContext context) {return IgnorePointer(child: Container(child: Column(children: creatColumnWidgets(),)),);}ListWidget creatRowWdiges() {ListWidget list [];for (var i 0; i rowCount; i) {final widget Expanded(child: Center(child: Transform.rotate(angle: pi / 10, child: Text(text, style: textStyle))));list.add(widget);}return list;}ListWidget creatColumnWidgets() {ListWidget list [];for (var i 0; i columnCount; i) {final widget Expanded(child: Row(children: creatRowWdiges(),));list.add(widget);}return list;}
}
使用
初始化
waterMarkerPlugin 要创建为全局的 // 初始化水印插件static DisableScreenshots waterMarkerPlugin DisableScreenshots();添加水印
//添加水印Params.waterMarkerPlugin.addWatermark(context,默认水印,rowCount: 4,columnCount: 8);取消水印 //取消水印Params.waterMarkerPlugin.removeWatermark();
