'ui';

ui.layout(
    <frame bg="#4fc3f7">
        <text textColor="white" textSize="18sp" layout_gravity="center">
            UI中使用协程
        </text>
    </frame>,
);

continuation.delay(5000);
images.requestScreenCaptureAsync(() => {
    toast('截图权限授予成功');
});
dialogs.alert('请授予软件截图权限').await();

// 退出应用对话框
ui.emitter.on('back_pressed', function (e) {
    e.consumed = true;
    let exit = dialogs.confirm('确定要退出程序').await();
    if (exit) {
        ui.finish();
    }
});