140 lines
4.1 KiB
Plaintext
140 lines
4.1 KiB
Plaintext
import { UTSAndroid } from "io.dcloud.uts";
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import ActivityCompat from "androidx.core.app.ActivityCompat";
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import Manifest from "android.Manifest";
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import PackageManager from "android.content.pm.PackageManager";
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import Build from "android.os.Build";
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import FileObserver from "android.os.FileObserver";
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import File from "java.io.File";
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import Environment from "android.os.Environment";
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import System from 'java.lang.System';
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import WindowManager from 'android.view.WindowManager';
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import { OnUserCaptureScreenCallbackResult, UserCaptureScreenCallback, OnUserCaptureScreen, OffUserCaptureScreen, SetUserCaptureScreenSuccess, SetUserCaptureScreenOptions, SetUserCaptureScreen } from "../interface.uts";
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/**
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* 文件监听器
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*/
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let observer : ScreenFileObserver | null = null;
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/**
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* 记录文件监听器上次监听的时间戳，避免重复监听
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*/
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let lastObserverTime : number = 0;
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/**
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* 截屏回调
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*/
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let listener : UserCaptureScreenCallback | null = null;
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/**
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* android 文件监听实现
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*/
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class ScreenFileObserver extends FileObserver {
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/**
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* 截屏文件目录
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*/
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private screenFile : File;
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constructor(screenFile : File) {
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super(screenFile);
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this.screenFile = screenFile;
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}
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override onEvent(event : Int, path : string | null) : void {
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// 只监听文件新增事件
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if (event == FileObserver.CREATE) {
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if (path != null) {
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const currentTime = System.currentTimeMillis();
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if ((currentTime - lastObserverTime) < 1000) {
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// 本地截屏行为比上一次超过1000ms, 才认为是一个有效的时间
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return;
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}
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lastObserverTime = currentTime;
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const screenShotPath = new File(this.screenFile, path).getPath();
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const res : OnUserCaptureScreenCallbackResult = {
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path: screenShotPath
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}
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listener?.(res);
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}
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}
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}
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}
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/**
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* 开启截图监听
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*/
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export const onUserCaptureScreen : OnUserCaptureScreen = function (callback : UserCaptureScreenCallback | null) {
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// 检查相关权限是否已授予
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if (ActivityCompat.checkSelfPermission(UTSAndroid.getAppContext()!, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
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// 无权限，申请权限
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ActivityCompat.requestPermissions(UTSAndroid.getUniActivity()!, arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE), 1001);
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return;
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}
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// 更新监听
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listener = callback;
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let directory_screenshot : File;
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if (Build.MANUFACTURER.toLowerCase() == "xiaomi") {
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// @Suppress("DEPRECATION")
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directory_screenshot = new File(new File(Environment.getExternalStorageDirectory(), Environment.DIRECTORY_DCIM), "Screenshots");
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} else {
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// @Suppress("DEPRECATION")
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directory_screenshot = new File(new File(Environment.getExternalStorageDirectory(), Environment.DIRECTORY_PICTURES), "Screenshots");
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}
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// 先结束监听 再开启监听
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observer?.stopWatching();
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observer = new ScreenFileObserver(directory_screenshot);
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observer?.startWatching();
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UTSAndroid.onAppActivityDestroy(function(){
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observer?.stopWatching()
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observer = null
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})
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}
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/**
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* 关闭截屏监听
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*/
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export const offUserCaptureScreen : OffUserCaptureScreen = function (_ : UserCaptureScreenCallback | null) {
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// android10以上，关闭监听通过移除文件监听器实现
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observer?.stopWatching();
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observer = null;
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lastObserverTime = 0;
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}
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/**
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* 设置是否禁止截屏
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*/
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export const setUserCaptureScreen : SetUserCaptureScreen = function (option : SetUserCaptureScreenOptions) {
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// 切换到UI线程
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UTSAndroid.getUniActivity()?.runOnUiThread(new SetUserCaptureScreenRunnable(option.enable));
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const res : SetUserCaptureScreenSuccess = {}
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option.success?.(res);
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option.complete?.(res);
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}
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class SetUserCaptureScreenRunnable extends Runnable {
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/**
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* ture: 允许用户截屏
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* false: 不允许用户截屏，防止用户截屏到应用页面内容
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*/
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private enable : boolean;
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constructor(enable : boolean) {
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super();
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this.enable = enable;
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}
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override run() : void {
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if (this.enable) {
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UTSAndroid.getUniActivity()?.getWindow()?.clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
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} else {
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UTSAndroid.getUniActivity()?.getWindow()?.addFlags(WindowManager.LayoutParams.FLAG_SECURE);
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}
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}
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}
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